426  
FNUS51 KPBZ 211618  
FWFPBZ  
 
FIRE WEATHER PLANNING FORECAST  
NATIONAL WEATHER SERVICE PITTSBURGH PA  
1218 PM EDT WED OCT 21 2026  
   
DISCUSSION  
 
DRY AND QUIET WEATHER FOR THE NEXT 5 DAYS UNDER HIGH PRESSURE.  
WITH SUFFICIENT DRY AIR ALOFT, MINRH VALUES WILL RANGE FROM THE  
MID TO LOW 30S TODAY UNDER LIGHT WINDS. FROST IS EXPECTED TOMORROW  
MORNING.  
 
FORECASTER: HEFFERAN  
 
OHZ039-220830-  
TUSCARAWAS-  
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-5) 65 (-2) 40 63  
RH % (24H TREND) 97 (+2) 45 (+7) 100 37  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1480 1260  
MIXING HGT(FT-AGL/MSL) 4850 4130  
TRANSPORT WND (MPH) N 12 NE 9  
VENT RATE (KT-FT) 51240 33040  
CATEGORY DAY 3 3  
INVERSION 6PM 53F/11AM 7PM 49F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 16 GEN POOR 5 VERY POOR 20 GEN POOR  
MAX ADI LATE 4 VERY POOR 63 GOOD 3 VERY POOR 44 GEN GOOD  
MAX LVORI EARLY 4 6 7 9  
MAX LVORI LATE 6 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ040-220830-  
CARROLL-  
INCLUDING THE CITIES OF CARROLLTON AND MALVERN  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 35 (-4) 64 (-2) 40 61  
RH % (24H TREND) 95 (0) 46 (+9) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR N 5 LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1420 1160  
MIXING HGT(FT-AGL/MSL) 4650 3810  
TRANSPORT WND (MPH) N 12 NE 9  
VENT RATE (KT-FT) 50500 30480  
CATEGORY DAY 3 3  
INVERSION 6PM 54F/11AM 8PM 48F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 17 GEN POOR 5 VERY POOR 26 FAIR  
MAX ADI LATE 4 VERY POOR 65 GOOD 3 VERY POOR 41 GEN GOOD  
MAX LVORI EARLY 4 6 8 8  
MAX LVORI LATE 6 2 9 1  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ041-220830-  
COLUMBIANA-  
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-4) 63 (-2) 39 60  
RH % (24H TREND) 99 (+3) 47 (+10) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1380 1110  
MIXING HGT(FT-AGL/MSL) 4530 3640  
TRANSPORT WND (MPH) N 13 NE 9  
VENT RATE (KT-FT) 51340 29120  
CATEGORY DAY 4 3  
INVERSION 6PM 53F/11AM 8PM 47F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 18 GEN POOR 5 VERY POOR 26 FAIR  
MAX ADI LATE 4 VERY POOR 66 GOOD 3 VERY POOR 39 FAIR  
MAX LVORI EARLY 5 7 8 8  
MAX LVORI LATE 7 2 9 1  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ048-220830-  
COSHOCTON-  
INCLUDING THE CITY OF COSHOCTON  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 35 (-5) 65 (-2) 41 63  
RH % (24H TREND) 93 (-5) 47 (+7) 100 41  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1470 1340  
MIXING HGT(FT-AGL/MSL) 4840 4380  
TRANSPORT WND (MPH) N 12 NE 8  
VENT RATE (KT-FT) 50110 30660  
CATEGORY DAY 3 3  
INVERSION 6PM 54F/11AM 7PM 50F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 14 GEN POOR 4 VERY POOR 17 GEN POOR  
MAX ADI LATE 4 VERY POOR 62 GOOD 3 VERY POOR 41 GEN GOOD  
MAX LVORI EARLY 5 5 8 9  
MAX LVORI LATE 6 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ049-220830-  
HARRISON-  
INCLUDING THE CITY OF CADIZ  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-6) 64 (-3) 40 62  
RH % (24H TREND) 98 (+3) 45 (+8) 100 36  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1320 1160  
MIXING HGT(FT-AGL/MSL) 4320 3800  
TRANSPORT WND (MPH) N 12 NE 8  
VENT RATE (KT-FT) 45590 26600  
CATEGORY DAY 3 3  
INVERSION 6PM 53F/11AM 7PM 48F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 16 GEN POOR 4 VERY POOR 27 FAIR  
MAX ADI LATE 3 VERY POOR 57 GEN GOOD 3 VERY POOR 37 FAIR  
MAX LVORI EARLY 4 6 9 8  
MAX LVORI LATE 7 2 9 1  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ050-220830-  
JEFFERSON OH-  
INCLUDING THE CITY OF STEUBENVILLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-6) 63 (-3) 40 61  
RH % (24H TREND) 99 (+3) 44 (+7) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1320 1060  
MIXING HGT(FT-AGL/MSL) 4340 3460  
TRANSPORT WND (MPH) N 12 NE 8  
VENT RATE (KT-FT) 43800 24220  
CATEGORY DAY 3 3  
INVERSION 6PM 52F/11AM 7PM 43F/9AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 17 GEN POOR 4 VERY POOR 28 FAIR  
MAX ADI LATE 3 VERY POOR 61 GOOD 3 VERY POOR 35 FAIR  
MAX LVORI EARLY 4 7 7 8  
MAX LVORI LATE 7 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ057-220830-  
MUSKINGUM-  
INCLUDING THE CITY OF ZANESVILLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 36 (-2) 65 (-2) 41 63  
RH % (24H TREND) 96 (-1) 44 (+1) 100 43  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1440 1290  
MIXING HGT(FT-AGL/MSL) 4720 4250  
TRANSPORT WND (MPH) N 10 NE 8  
VENT RATE (KT-FT) 44140 29750  
CATEGORY DAY 3 3  
INVERSION 6PM 53F/11AM 7PM 50F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 14 GEN POOR 4 VERY POOR 16 GEN POOR  
MAX ADI LATE 3 VERY POOR 56 GEN GOOD 3 VERY POOR 40 FAIR  
MAX LVORI EARLY 6 6 8 9  
MAX LVORI LATE 6 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ058-220830-  
GUERNSEY-  
INCLUDING THE CITY OF CAMBRIDGE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-5) 65 (-2) 40 63  
RH % (24H TREND) 97 (0) 43 (+3) 100 38  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1370 1250  
MIXING HGT(FT-AGL/MSL) 4490 4120  
TRANSPORT WND (MPH) N 10 NE 8  
VENT RATE (KT-FT) 44480 28840  
CATEGORY DAY 3 3  
INVERSION 6PM 53F/11AM 7PM 50F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 15 GEN POOR 4 VERY POOR 23 FAIR  
MAX ADI LATE 3 VERY POOR 54 GEN GOOD 3 VERY POOR 40 FAIR  
MAX LVORI EARLY 5 6 9 8  
MAX LVORI LATE 6 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ059-220830-  
BELMONT-  
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-5) 64 (-2) 40 62  
RH % (24H TREND) 96 (-3) 43 (+5) 100 37  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1320 1060  
MIXING HGT(FT-AGL/MSL) 4320 3480  
TRANSPORT WND (MPH) N 12 NE 9  
VENT RATE (KT-FT) 43560 27840  
CATEGORY DAY 3 3  
INVERSION 6PM 52F/11AM 7PM 49F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 13 GEN POOR 4 VERY POOR 29 FAIR  
MAX ADI LATE 3 VERY POOR 57 GEN GOOD 3 VERY POOR 38 FAIR  
MAX LVORI EARLY 5 6 9 8  
MAX LVORI LATE 6 2 9 1  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ068-220830-  
NOBLE-  
INCLUDING THE CITY OF CALDWELL  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 35 (-3) 64 (-2) 41 63  
RH % (24H TREND) 96 (-1) 42 (-1) 100 40  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1440 1180  
MIXING HGT(FT-AGL/MSL) 4710 3870  
TRANSPORT WND (MPH) N 10 NE 9  
VENT RATE (KT-FT) 41810 30960  
CATEGORY DAY 3 3  
INVERSION 6PM 53F/11AM 7PM 50F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 13 GEN POOR 4 VERY POOR 28 FAIR  
MAX ADI LATE 3 VERY POOR 55 GEN GOOD 4 VERY POOR 42 GEN GOOD  
MAX LVORI EARLY 6 6 9 8  
MAX LVORI LATE 6 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
OHZ069-220830-  
MONROE-  
INCLUDING THE CITY OF WOODSFIELD  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-7) 64 (-2) 40 63  
RH % (24H TREND) 97 (-3) 40 (+1) 100 38  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1370 1150  
MIXING HGT(FT-AGL/MSL) 4490 3760  
TRANSPORT WND (MPH) N 10 NE 9  
VENT RATE (KT-FT) 40210 30080  
CATEGORY DAY 3 3  
INVERSION 6PM 52F/11AM 7PM 50F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 12 POOR 4 VERY POOR 29 FAIR  
MAX ADI LATE 3 VERY POOR 53 GEN GOOD 4 VERY POOR 40 FAIR  
MAX LVORI EARLY 5 6 9 8  
MAX LVORI LATE 7 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ007-220830-  
MERCER-  
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-1) 63 (0) 35 60  
RH % (24H TREND) 100 (+5) 48 (+16) 100 32  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR N 6 LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1420 1130  
MIXING HGT(FT-AGL/MSL) 4650 3720  
TRANSPORT WND (MPH) N 15 E 7  
VENT RATE (KT-FT) 52920 22320  
CATEGORY DAY 4 2  
INVERSION 6PM 54F/11AM 7PM 46F/10AM  
DISPERSION 5 2  
MAX ADI EARLY 4 VERY POOR 19 GEN POOR 7 POOR 23 FAIR  
MAX ADI LATE 4 VERY POOR 57 GEN GOOD 4 VERY POOR 31 FAIR  
MAX LVORI EARLY 6 8 9 8  
MAX LVORI LATE 7 1 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ008-220830-  
VENANGO-  
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (+1) 63 (0) 34 60  
RH % (24H TREND) 98 (+4) 48 (+16) 100 32  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR N 5 LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1460 1120  
MIXING HGT(FT-AGL/MSL) 4780 3690  
TRANSPORT WND (MPH) N 15 NE 7  
VENT RATE (KT-FT) 49670 22140  
CATEGORY DAY 4 2  
INVERSION 6PM 46F/10AM 7PM 43F/10AM  
DISPERSION 5 2  
MAX ADI EARLY 4 VERY POOR 22 FAIR 5 VERY POOR 20 GEN POOR  
MAX ADI LATE 4 VERY POOR 81 GOOD 4 VERY POOR 30 FAIR  
MAX LVORI EARLY 6 7 9 8  
MAX LVORI LATE 7 1 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ009-220830-  
FOREST-  
INCLUDING THE CITY OF TIONESTA  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 30 (-1) 62 (0) 30 60  
RH % (24H TREND) 98 (+7) 46 (+18) 100 27  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1380 1140  
MIXING HGT(FT-AGL/MSL) 4540 3750  
TRANSPORT WND (MPH) N 15 NE 7  
VENT RATE (KT-FT) 51820 22500  
CATEGORY DAY 4 2  
INVERSION 6PM 45F/10AM 7PM 42F/10AM  
DISPERSION 5 2  
MAX ADI EARLY 4 VERY POOR 28 FAIR 5 VERY POOR 23 FAIR  
MAX ADI LATE 4 VERY POOR 79 GOOD 5 VERY POOR 36 FAIR  
MAX LVORI EARLY 6 6 9 8  
MAX LVORI LATE 8 1 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ013-220830-  
LAWRENCE-  
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 31 (-4) 64 (0) 36 61  
RH % (24H TREND) 100 (+5) 47 (+14) 100 31  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR N 5 LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1360 1120  
MIXING HGT(FT-AGL/MSL) 4470 3680  
TRANSPORT WND (MPH) N 14 E 8  
VENT RATE (KT-FT) 53100 25760  
CATEGORY DAY 4 3  
INVERSION 6PM 53F/11AM 7PM 46F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 17 GEN POOR 5 VERY POOR 24 FAIR  
MAX ADI LATE 4 VERY POOR 70 GOOD 3 VERY POOR 35 FAIR  
MAX LVORI EARLY 6 8 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ014-220830-  
BUTLER-  
INCLUDING THE CITY OF BUTLER  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 31 (-3) 63 (0) 35 60  
RH % (24H TREND) 99 (+5) 50 (+15) 100 36  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1390 1050  
MIXING HGT(FT-AGL/MSL) 4560 3430  
TRANSPORT WND (MPH) N 13 NE 8  
VENT RATE (KT-FT) 50560 24010  
CATEGORY DAY 4 3  
INVERSION 6PM 52F/11AM 7PM 45F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 20 GEN POOR 5 VERY POOR 23 FAIR  
MAX ADI LATE 4 VERY POOR 67 GOOD 4 VERY POOR 33 FAIR  
MAX LVORI EARLY 6 7 9 8  
MAX LVORI LATE 9 1 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ015-220830-  
CLARION-  
INCLUDING THE CITY OF CLARION  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 31 (-1) 63 (+1) 33 59  
RH % (24H TREND) 99 (+10) 47 (+12) 100 31  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1440 1090  
MIXING HGT(FT-AGL/MSL) 4720 3590  
TRANSPORT WND (MPH) N 14 NE 7  
VENT RATE (KT-FT) 44190 21540  
CATEGORY DAY 4 2  
INVERSION 6PM 51F/11AM 7PM 43F/10AM  
DISPERSION 5 2  
MAX ADI EARLY 4 VERY POOR 21 FAIR 5 VERY POOR 23 FAIR  
MAX ADI LATE 4 VERY POOR 76 GOOD 4 VERY POOR 34 FAIR  
MAX LVORI EARLY 5 7 9 8  
MAX LVORI LATE 8 1 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ016-220830-  
JEFFERSON PA-  
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 30 (-4) 61 (0) 31 58  
RH % (24H TREND) 100 (+14) 46 (+11) 100 30  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR N 5 LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1420 1080  
MIXING HGT(FT-AGL/MSL) 4660 3550  
TRANSPORT WND (MPH) N 15 NE 7  
VENT RATE (KT-FT) 47680 21300  
CATEGORY DAY 4 2  
INVERSION 6PM 44F/10AM 7PM 42F/10AM  
DISPERSION 5 2  
MAX ADI EARLY 4 VERY POOR 24 FAIR 6 VERY POOR 26 FAIR  
MAX ADI LATE 4 VERY POOR 79 GOOD 5 VERY POOR 34 FAIR  
MAX LVORI EARLY 4 7 7 8  
MAX LVORI LATE 7 1 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ020-220830-  
BEAVER-  
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,  
AND MONACA  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-5) 63 (-2) 38 60  
RH % (24H TREND) 100 (+7) 47 (+12) 100 34  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1280 1090  
MIXING HGT(FT-AGL/MSL) 4210 3560  
TRANSPORT WND (MPH) N 13 NE 8  
VENT RATE (KT-FT) 46360 24920  
CATEGORY DAY 3 3  
INVERSION 6PM 52F/11AM 7PM 43F/9AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 14 GEN POOR 5 VERY POOR 25 FAIR  
MAX ADI LATE 3 VERY POOR 63 GOOD 3 VERY POOR 35 FAIR  
MAX LVORI EARLY 5 8 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ021-220830-  
ALLEGHENY-  
INCLUDING THE CITY OF PITTSBURGH METRO AREA  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-5) 63 (-1) 38 60  
RH % (24H TREND) 100 (+6) 45 (+8) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1360 1050  
MIXING HGT(FT-AGL/MSL) 4460 3440  
TRANSPORT WND (MPH) N 13 NE 9  
VENT RATE (KT-FT) 42280 27520  
CATEGORY DAY 4 3  
INVERSION 6PM 50F/11AM 7PM 42F/9AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 15 GEN POOR 5 VERY POOR 26 FAIR  
MAX ADI LATE 3 VERY POOR 62 GOOD 3 VERY POOR 37 FAIR  
MAX LVORI EARLY 5 9 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ022-220830-  
ARMSTRONG-  
INCLUDING THE CITIES OF KITTANNING AND FORD CITY  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 30 (-4) 63 (+1) 34 59  
RH % (24H TREND) 100 (+4) 48 (+9) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1400 1020  
MIXING HGT(FT-AGL/MSL) 4610 3360  
TRANSPORT WND (MPH) N 13 NE 9  
VENT RATE (KT-FT) 42650 26880  
CATEGORY DAY 4 3  
INVERSION 6PM 50F/11AM 7PM 44F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 17 GEN POOR 6 VERY POOR 25 FAIR  
MAX ADI LATE 3 VERY POOR 68 GOOD 4 VERY POOR 35 FAIR  
MAX LVORI EARLY 6 8 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ029-220830-  
WASHINGTON-  
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 32 (-6) 62 (-3) 38 60  
RH % (24H TREND) 100 (+5) 45 (+8) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1280 1010  
MIXING HGT(FT-AGL/MSL) 4200 3310  
TRANSPORT WND (MPH) N 12 NE 9  
VENT RATE (KT-FT) 45540 26480  
CATEGORY DAY 3 3  
INVERSION 6PM 50F/11AM 7PM 47F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 12 POOR 5 VERY POOR 24 FAIR  
MAX ADI LATE 3 VERY POOR 57 GEN GOOD 3 VERY POOR 36 FAIR  
MAX LVORI EARLY 5 8 7 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ031-220830-  
GREENE-  
INCLUDING THE CITY OF WAYNESBURG  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-4) 61 (-5) 37 60  
RH % (24H TREND) 100 (+1) 44 (+9) 100 41  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1250 980  
MIXING HGT(FT-AGL/MSL) 4100 3210  
TRANSPORT WND (MPH) N 10 NE 8  
VENT RATE (KT-FT) 46230 22470  
CATEGORY DAY 3 2  
INVERSION 6PM 49F/11AM 7PM 46F/10AM  
DISPERSION 5 2  
MAX ADI EARLY 3 VERY POOR 9 POOR 4 VERY POOR 24 FAIR  
MAX ADI LATE 3 VERY POOR 52 GEN GOOD 3 VERY POOR 34 FAIR  
MAX LVORI EARLY 6 8 9 8  
MAX LVORI LATE 9 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ073-220830-  
WESTMORELAND-  
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,  
LOWER BURRELL, LATROBE, AND MONESSEN  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 31 (-3) 62 (-1) 36 61  
RH % (24H TREND) 100 (+1) 47 (+9) 100 34  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1310 1040  
MIXING HGT(FT-AGL/MSL) 4310 3410  
TRANSPORT WND (MPH) N 12 NE 8  
VENT RATE (KT-FT) 41100 23870  
CATEGORY DAY 3 3  
INVERSION 6PM 48F/11AM 7PM 45F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 11 POOR 5 VERY POOR 24 FAIR  
MAX ADI LATE 2 VERY POOR 55 GEN GOOD 3 VERY POOR 33 FAIR  
MAX LVORI EARLY 6 9 9 8  
MAX LVORI LATE 10 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ074-220830-  
HIGHER ELEVATIONS OF WESTMORELAND-  
INCLUDING THE CITIES OF LIGONIER AND DONEGAL  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 31 (-6) 61 (+1) 35 60  
RH % (24H TREND) 100 (+10) 46 (+9) 100 32  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1180 1060  
MIXING HGT(FT-AGL/MSL) 3870 3480  
TRANSPORT WND (MPH) N 13 E 8  
VENT RATE (KT-FT) 40690 24360  
CATEGORY DAY 3 3  
INVERSION 6PM 47F/11AM 7PM 44F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 12 POOR 4 VERY POOR 25 FAIR  
MAX ADI LATE 2 VERY POOR 57 GEN GOOD 4 VERY POOR 34 FAIR  
MAX LVORI EARLY 5 9 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ075-220830-  
FAYETTE-  
INCLUDING THE CITY OF UNIONTOWN  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 32 (-5) 60 (-4) 36 61  
RH % (24H TREND) 100 (+4) 46 (+9) 100 36  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1150 1130  
MIXING HGT(FT-AGL/MSL) 3790 3710  
TRANSPORT WND (MPH) N 10 NE 8  
VENT RATE (KT-FT) 36600 25970  
CATEGORY DAY 3 3  
INVERSION 6PM 48F/11AM 7PM 46F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 9 POOR 3 VERY POOR 21 FAIR  
MAX ADI LATE 2 VERY POOR 47 GEN GOOD 3 VERY POOR 35 FAIR  
MAX LVORI EARLY 6 9 9 8  
MAX LVORI LATE 10 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ076-220830-  
HIGHER ELEVATIONS OF FAYETTE-  
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 32 (-6) 58 (-3) 35 59  
RH % (24H TREND) 100 (+10) 42 (+8) 100 29  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1000 1160  
MIXING HGT(FT-AGL/MSL) 3290 3800  
TRANSPORT WND (MPH) N 13 E 8  
VENT RATE (KT-FT) 39960 26600  
CATEGORY DAY 3 3  
INVERSION 6PM 49F/11AM 6PM 45F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 13 GEN POOR 4 VERY POOR 24 FAIR  
MAX ADI LATE 2 VERY POOR 47 GEN GOOD 3 VERY POOR 36 FAIR  
MAX LVORI EARLY 5 9 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ077-220830-  
INDIANA-  
INCLUDING THE CITY OF INDIANA  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 30 (-5) 62 (+1) 34 60  
RH % (24H TREND) 100 (+5) 47 (+8) 100 34  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1350 1030  
MIXING HGT(FT-AGL/MSL) 4440 3370  
TRANSPORT WND (MPH) N 13 NE 8  
VENT RATE (KT-FT) 45260 23590  
CATEGORY DAY 4 3  
INVERSION 6PM 49F/11AM 7PM 43F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 15 GEN POOR 6 VERY POOR 26 FAIR  
MAX ADI LATE 3 VERY POOR 64 GOOD 4 VERY POOR 36 FAIR  
MAX LVORI EARLY 6 9 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
PAZ078-220830-  
HIGHER ELEVATIONS OF INDIANA-  
INCLUDING THE CITY OF ARMAGH  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 31 (-4) 60 (0) 34 59  
RH % (24H TREND) 100 (+9) 48 (+9) 100 33  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1220 1050  
MIXING HGT(FT-AGL/MSL) 3990 3440  
TRANSPORT WND (MPH) N 13 NE 9  
VENT RATE (KT-FT) 44350 27520  
CATEGORY DAY 3 3  
INVERSION 6PM 48F/11AM 7PM 44F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 14 GEN POOR 5 VERY POOR 27 FAIR  
MAX ADI LATE 2 VERY POOR 61 GOOD 4 VERY POOR 37 FAIR  
MAX LVORI EARLY 5 9 9 8  
MAX LVORI LATE 9 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ001-220830-  
HANCOCK-  
INCLUDING THE CITY OF WEIRTON  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-4) 63 (-2) 40 60  
RH % (24H TREND) 99 (+3) 46 (+9) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1330 1060  
MIXING HGT(FT-AGL/MSL) 4370 3490  
TRANSPORT WND (MPH) N 13 NE 8  
VENT RATE (KT-FT) 43980 24430  
CATEGORY DAY 3 3  
INVERSION 6PM 52F/11AM 8PM 43F/9AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 15 GEN POOR 4 VERY POOR 26 FAIR  
MAX ADI LATE 3 VERY POOR 65 GOOD 3 VERY POOR 34 FAIR  
MAX LVORI EARLY 4 7 6 8  
MAX LVORI LATE 7 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ002-220830-  
BROOKE-  
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-7) 63 (-3) 39 61  
RH % (24H TREND) 99 (+8) 44 (+7) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1280 1030  
MIXING HGT(FT-AGL/MSL) 4200 3390  
TRANSPORT WND (MPH) N 12 NE 9  
VENT RATE (KT-FT) 44110 27120  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 7PM 43F/9AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 15 GEN POOR 4 VERY POOR 27 FAIR  
MAX ADI LATE 3 VERY POOR 57 GEN GOOD 3 VERY POOR 38 FAIR  
MAX LVORI EARLY 4 9 6 8  
MAX LVORI LATE 8 2 9 1  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ003-220830-  
OHIO-  
INCLUDING THE CITY OF WHEELING  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-6) 63 (-3) 39 61  
RH % (24H TREND) 97 (-2) 44 (+7) 100 37  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1290 1030  
MIXING HGT(FT-AGL/MSL) 4240 3380  
TRANSPORT WND (MPH) N 10 NE 9  
VENT RATE (KT-FT) 43440 27040  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 7PM 47F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 11 POOR 4 VERY POOR 27 FAIR  
MAX ADI LATE 3 VERY POOR 52 GEN GOOD 3 VERY POOR 37 FAIR  
MAX LVORI EARLY 5 7 8 8  
MAX LVORI LATE 7 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ004-220830-  
MARSHALL-  
INCLUDING THE CITY OF MOUNDSVILLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-5) 64 (-2) 40 63  
RH % (24H TREND) 96 (-4) 42 (+5) 100 42  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1270 1040  
MIXING HGT(FT-AGL/MSL) 4180 3400  
TRANSPORT WND (MPH) N 10 NE 9  
VENT RATE (KT-FT) 44940 27200  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 7PM 48F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 11 POOR 4 VERY POOR 29 FAIR  
MAX ADI LATE 3 VERY POOR 51 GEN GOOD 4 VERY POOR 37 FAIR  
MAX LVORI EARLY 5 7 9 8  
MAX LVORI LATE 7 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ012-220830-  
WETZEL-  
INCLUDING THE CITY OF NEW MARTINSVILLE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 35 (-4) 63 (-3) 40 63  
RH % (24H TREND) 98 (-1) 41 (+6) 100 41  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1250 1070  
MIXING HGT(FT-AGL/MSL) 4110 3500  
TRANSPORT WND (MPH) N 10 NE 9  
VENT RATE (KT-FT) 44850 28000  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 7PM 48F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 10 POOR 4 VERY POOR 30 FAIR  
MAX ADI LATE 3 VERY POOR 50 GEN GOOD 4 VERY POOR 38 FAIR  
MAX LVORI EARLY 5 8 9 8  
MAX LVORI LATE 8 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ021-220830-  
MARION-  
INCLUDING THE CITY OF FAIRMONT  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-6) 61 (-5) 38 62  
RH % (24H TREND) 100 (+4) 40 (+7) 100 39  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1180 1120  
MIXING HGT(FT-AGL/MSL) 3870 3670  
TRANSPORT WND (MPH) N 10 NE 8  
VENT RATE (KT-FT) 40790 25690  
CATEGORY DAY 3 3  
INVERSION 6PM 50F/11AM 7PM 43F/9AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 8 POOR 3 VERY POOR 27 FAIR  
MAX ADI LATE 2 VERY POOR 46 GEN GOOD 3 VERY POOR 36 FAIR  
MAX LVORI EARLY 6 9 9 8  
MAX LVORI LATE 9 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ509-220830-  
MONONGALIA-  
INCLUDING THE CITY OF MORGANTOWN  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (-5) 61 (-5) 38 61  
RH % (24H TREND) 99 (+5) 42 (+9) 100 40  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1170 1130  
MIXING HGT(FT-AGL/MSL) 3830 3700  
TRANSPORT WND (MPH) N 10 NE 8  
VENT RATE (KT-FT) 44860 25900  
CATEGORY DAY 3 3  
INVERSION 6PM 49F/11AM 7PM 47F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 8 POOR 3 VERY POOR 25 FAIR  
MAX ADI LATE 2 VERY POOR 46 GEN GOOD 3 VERY POOR 35 FAIR  
MAX LVORI EARLY 5 9 9 8  
MAX LVORI LATE 9 2 9 3  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ510-220830-  
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-  
INCLUDING THE CITY OF COOPERS ROCK  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-8) 56 (-5) 36 58  
RH % (24H TREND) 99 (+8) 44 (+10) 100 33  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 970 1180  
MIXING HGT(FT-AGL/MSL) 3170 3880  
TRANSPORT WND (MPH) N 12 NE 8  
VENT RATE (KT-FT) 32590 27160  
CATEGORY DAY 3 3  
INVERSION 6PM 48F/11AM 7PM 45F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 10 POOR 3 VERY POOR 27 FAIR  
MAX ADI LATE 2 VERY POOR 43 GEN GOOD 3 VERY POOR 37 FAIR  
MAX LVORI EARLY 5 9 8 8  
MAX LVORI LATE 8 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ511-220830-  
PRESTON-  
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR CLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 32 (-4) 60 (-2) 36 61  
RH % (24H TREND) 99 (+3) 40 (+7) 100 31  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 970 1160  
MIXING HGT(FT-AGL/MSL) 3170 3820  
TRANSPORT WND (MPH) N 12 NE 8  
VENT RATE (KT-FT) 35530 26740  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 7PM 46F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 11 POOR 3 VERY POOR 31 FAIR  
MAX ADI LATE 2 VERY POOR 44 GEN GOOD 4 VERY POOR 38 FAIR  
MAX LVORI EARLY 6 9 9 8  
MAX LVORI LATE 8 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ512-220830-  
EASTERN PRESTON-  
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (-2) 59 (-2) 36 60  
RH % (24H TREND) 96 (+2) 37 (+5) 100 31  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 990 1070  
MIXING HGT(FT-AGL/MSL) 3240 3510  
TRANSPORT WND (MPH) N 13 E 9  
VENT RATE (KT-FT) 40200 28080  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 6PM 45F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 14 GEN POOR 4 VERY POOR 31 FAIR  
MAX ADI LATE 2 VERY POOR 49 GEN GOOD 4 VERY POOR 38 FAIR  
MAX LVORI EARLY 5 6 8 8  
MAX LVORI LATE 7 2 9 1  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ513-220830-  
WESTERN TUCKER-  
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 34 (0) 61 (0) 37 62  
RH % (24H TREND) 95 (+1) 36 (+4) 100 29  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 950 1090  
MIXING HGT(FT-AGL/MSL) 3110 3580  
TRANSPORT WND (MPH) N 13 NE 8  
VENT RATE (KT-FT) 39260 25060  
CATEGORY DAY 3 3  
INVERSION 6PM 44F/10AM 7PM 45F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 3 VERY POOR 13 GEN POOR 4 VERY POOR 30 FAIR  
MAX ADI LATE 2 VERY POOR 46 GEN GOOD 4 VERY POOR 36 FAIR  
MAX LVORI EARLY 5 6 8 8  
MAX LVORI LATE 6 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
 
WVZ514-220830-  
EASTERN TUCKER-  
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY  
1218 PM EDT WED OCT 21 2026  
 
TONIGHT THU THU NIGHT FRI  
 
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR  
PRECIP TYPE NONE NONE NONE NONE  
CHANCE PRECIP (%) 0 0 0 0  
CHANCE OF THUNDER (%) 0 0 0 0  
TEMP (24H TREND) 33 (0) 57 (-1) 35 56  
RH % (24H TREND) 84 (-7) 33 (+1) 100 35  
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR  
PRECIP AMOUNT 0.00 0.00 0.00 0.00  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
MIXING HGT(M-AGL/MSL) 1030 970  
MIXING HGT(FT-AGL/MSL) 3390 3180  
TRANSPORT WND (MPH) N 15 E 10  
VENT RATE (KT-FT) 48860 28620  
CATEGORY DAY 3 3  
INVERSION 6PM 51F/11AM 6PM 43F/10AM  
DISPERSION 5 3  
MAX ADI EARLY 4 VERY POOR 23 FAIR 5 VERY POOR 29 FAIR  
MAX ADI LATE 4 VERY POOR 58 GEN GOOD 5 VERY POOR 37 FAIR  
MAX LVORI EARLY 4 4 6 7  
MAX LVORI LATE 4 2 9 2  
 
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.  
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.  
 
 
   
FORECAST FOR DAYS 3 THROUGH 7  
   
SATURDAY  
CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE MID 60S.  
LIGHT WINDS.    
SUNDAY  
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID  
60S. LIGHT WINDS.    
MONDAY  
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE MID  
60S. SOUTHWEST WINDS AROUND 5 MPH.    
TUESDAY  
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 60S. NORTHWEST WINDS AROUND 5 MPH.    
WEDNESDAY  
MOSTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE UPPER  
50S. EAST WINDS 5 TO 10 MPH.  
 
 
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