368
FNUS51 KPBZ 170431
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1231 AM EDT MON AUG 17 2026
DISCUSSION
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AGAIN TODAY
DURING THE AFTERNOON. THIS WILL KEEP ANOTHER ROUND OF DAMP
CONDITIONS. THERE WILL BE A DAY OR SO OF DRY WEATHER BEFORE THE
NEXT ROUND ARRIVES ON WEDNESDAY.
OHZ039-172030-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 50 30 0
TEMP (24H TREND) 79 (-5) 60 (-9) 79
RH % (24H TREND) 79 (0) 100 (0) 59
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.12 0.03 0.00
PRECIP DURATION 4 0
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 790 1970
MIXING HGT(FT-AGL/MSL)2600 6460
TRANSPORT WND (MPH) NW 8 NW 8
VENT RATE (KT-FT) 18200 45220
CATEGORY DAY 2 3
INVERSION 71F/9AM 8PM 65F/9AM
DISPERSION 2 3
MAX ADI EARLY 15 GEN POOR 6 VERY POOR 19 GEN POOR
MAX ADI LATE 23 FAIR 4 VERY POOR 63 GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-172030-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 30 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 79 (-4) 59 (-10) 79
RH % (24H TREND) 78 (+3) 100 (0) 57
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.02 0.00
PRECIP DURATION 3 0
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 870 1870
MIXING HGT(FT-AGL/MSL)2860 6150
TRANSPORT WND (MPH) N 9 NW 8
VENT RATE (KT-FT) 22880 43050
CATEGORY DAY 2 3
INVERSION 71F/9AM 8PM 65F/9AM
DISPERSION 2 3
MAX ADI EARLY 14 GEN POOR 7 POOR 20 GEN POOR
MAX ADI LATE 29 FAIR 4 VERY POOR 63 GOOD
MAX LVORI EARLY 9 8 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-172030-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 50 0 0
CHANCE OF THUNDER (%) 40 0 0
TEMP (24H TREND) 79 (-6) 59 (-9) 79
RH % (24H TREND) 75 (+1) 100 (0) 56
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.18 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 8 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 960 1900
MIXING HGT(FT-AGL/MSL)3140 6230
TRANSPORT WND (MPH) NW 10 NW 9
VENT RATE (KT-FT) 28260 49840
CATEGORY DAY 3 3
INVERSION 71F/9AM 8PM 65F/9AM
DISPERSION 3 3
MAX ADI EARLY 19 GEN POOR 6 VERY POOR 22 FAIR
MAX ADI LATE 35 FAIR 4 VERY POOR 66 GOOD
MAX LVORI EARLY 9 7 8
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-172030-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 50 30 0
TEMP (24H TREND) 79 (-4) 59 (-9) 79
RH % (24H TREND) 82 (0) 100 (0) 61
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.23 0.04 0.00
PRECIP DURATION 4 0
PRECIP BEGIN 8 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 790 1940
MIXING HGT(FT-AGL/MSL)2580 6360
TRANSPORT WND (MPH) NW 7 W 8
VENT RATE (KT-FT) 15480 44520
CATEGORY DAY 2 3
INVERSION 73F/10AM 8PM 65F/9AM
DISPERSION 2 3
MAX ADI EARLY 13 GEN POOR 7 POOR 20 GEN POOR
MAX ADI LATE 27 FAIR 4 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-172030-
HARRISON-
INCLUDING THE CITY OF CADIZ
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 79 (-6) 59 (-10) 80
RH % (24H TREND) 82 (+5) 100 (0) 57
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.09 0.04 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 750 1990
MIXING HGT(FT-AGL/MSL)2450 6520
TRANSPORT WND (MPH) W 8 NW 8
VENT RATE (KT-FT) 17150 45640
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 65F/9AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 5 VERY POOR 19 GEN POOR
MAX ADI LATE 24 FAIR 4 VERY POOR 65 GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-172030-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 79 (-5) 60 (-9) 80
RH % (24H TREND) 81 (+5) 100 (0) 54
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.18 0.05 0.00
PRECIP DURATION 3 0
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 800 1900
MIXING HGT(FT-AGL/MSL)2610 6230
TRANSPORT WND (MPH) NW 9 NW 9
VENT RATE (KT-FT) 20880 49840
CATEGORY DAY 2 3
INVERSION 72F/9AM 8PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 5 VERY POOR 21 FAIR
MAX ADI LATE 24 FAIR 4 VERY POOR 64 GOOD
MAX LVORI EARLY 9 8 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-172030-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 79 (-5) 60 (-9) 79
RH % (24H TREND) 82 (+3) 100 (0) 62
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.14 0.07 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 770 1780
MIXING HGT(FT-AGL/MSL)2530 5850
TRANSPORT WND (MPH) NW 8 NW 7
VENT RATE (KT-FT) 17710 35100
CATEGORY DAY 2 3
INVERSION 74F/10AM 8PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 12 POOR 6 VERY POOR 15 GEN POOR
MAX ADI LATE 23 FAIR 4 VERY POOR 54 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-172030-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 70 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 80 (-5) 60 (-9) 80
RH % (24H TREND) 84 (+5) 100 (0) 60
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.06 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 750 1880
MIXING HGT(FT-AGL/MSL)2470 6160
TRANSPORT WND (MPH) NW 7 NW 8
VENT RATE (KT-FT) 14820 43120
CATEGORY DAY 2 3
INVERSION 74F/10AM 8PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 12 POOR 5 VERY POOR 15 GEN POOR
MAX ADI LATE 22 FAIR 4 VERY POOR 59 GEN GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-172030-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 80 (-4) 61 (-9) 80
RH % (24H TREND) 82 (+4) 100 (0) 57
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.04 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 9 PM
MIXING HGT(M-AGL/MSL) 820 1840
MIXING HGT(FT-AGL/MSL)2680 6020
TRANSPORT WND (MPH) W 9 NW 8
VENT RATE (KT-FT) 21440 42140
CATEGORY DAY 2 3
INVERSION 73F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 19 GEN POOR 5 VERY POOR 19 GEN POOR
MAX ADI LATE 25 FAIR 4 VERY POOR 58 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-172030-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 60 50 0
TEMP (24H TREND) 80 (-4) 61 (-8) 80
RH % (24H TREND) 85 (+5) 100 (0) 60
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.09 0.09 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 10 PM
MIXING HGT(M-AGL/MSL) 750 1760
MIXING HGT(FT-AGL/MSL)2470 5790
TRANSPORT WND (MPH) NW 7 NW 7
VENT RATE (KT-FT) 14820 34740
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 15 GEN POOR 4 VERY POOR 14 GEN POOR
MAX ADI LATE 22 FAIR 4 VERY POOR 53 GEN GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-172030-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 60 50 0
TEMP (24H TREND) 80 (-3) 63 (-7) 80
RH % (24H TREND) 83 (+1) 100 (0) 58
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.04 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 8 AM CONTINUING
PRECIP END CONTINUING 11 PM
MIXING HGT(M-AGL/MSL) 810 1770
MIXING HGT(FT-AGL/MSL)2650 5800
TRANSPORT WND (MPH) W 8 NW 8
VENT RATE (KT-FT) 18550 40600
CATEGORY DAY 2 3
INVERSION 73F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 15 GEN POOR 4 VERY POOR 18 GEN POOR
MAX ADI LATE 23 FAIR 4 VERY POOR 56 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-172030-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (-4) 58 (-10) 79
RH % (24H TREND) 68 (-5) 100 (0) 53
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 LGT/VAR NW 5
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1050 1790
MIXING HGT(FT-AGL/MSL)3450 5890
TRANSPORT WND (MPH) NW 13 NW 10
VENT RATE (KT-FT) 37950 53010
CATEGORY DAY 3 4
INVERSION 71F/9AM 8PM 66F/9AM
DISPERSION 3 4
MAX ADI EARLY 25 FAIR 8 POOR 26 FAIR
MAX ADI LATE 51 GEN GOOD 3 VERY POOR 67 GOOD
MAX LVORI EARLY 9 8 9
MAX LVORI LATE 4 9 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-172030-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (-2) 58 (-10) 78
RH % (24H TREND) 69 (-8) 100 (0) 57
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1060 1790
MIXING HGT(FT-AGL/MSL)3490 5860
TRANSPORT WND (MPH) NW 13 NW 10
VENT RATE (KT-FT) 38390 52740
CATEGORY DAY 3 4
INVERSION 70F/9AM 8PM 64F/9AM
DISPERSION 3 4
MAX ADI EARLY 25 FAIR 5 VERY POOR 36 FAIR
MAX ADI LATE 51 GEN GOOD 3 VERY POOR 74 GOOD
MAX LVORI EARLY 8 8 9
MAX LVORI LATE 4 10 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-172030-
FOREST-
INCLUDING THE CITY OF TIONESTA
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (-1) 57 (-10) 78
RH % (24H TREND) 63 (-12) 100 (0) 52
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 2 PM
MIXING HGT(M-AGL/MSL) 1060 1760
MIXING HGT(FT-AGL/MSL)3490 5770
TRANSPORT WND (MPH) NW 13 NW 12
VENT RATE (KT-FT) 38390 57700
CATEGORY DAY 3 4
INVERSION 70F/9AM 8PM 64F/9AM
DISPERSION 3 4
MAX ADI EARLY 24 FAIR 5 VERY POOR 30 FAIR
MAX ADI LATE 53 GEN GOOD 3 VERY POOR 81 GOOD
MAX LVORI EARLY 8 8 9
MAX LVORI LATE 4 10 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-172030-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 80 (-3) 58 (-10) 80
RH % (24H TREND) 70 (-7) 100 (0) 54
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.02 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 8 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1070 1870
MIXING HGT(FT-AGL/MSL)3520 6130
TRANSPORT WND (MPH) NW 12 NW 9
VENT RATE (KT-FT) 35200 49040
CATEGORY DAY 3 3
INVERSION 72F/9AM 8PM 66F/9AM
DISPERSION 3 3
MAX ADI EARLY 24 FAIR 5 VERY POOR 24 FAIR
MAX ADI LATE 48 GEN GOOD 4 VERY POOR 74 GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-172030-
BUTLER-
INCLUDING THE CITY OF BUTLER
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 80 (-2) 58 (-10) 80
RH % (24H TREND) 72 (-8) 100 (0) 58
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR NW 5
PRECIP AMOUNT 0.03 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 9 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1080 1800
MIXING HGT(FT-AGL/MSL)3530 5910
TRANSPORT WND (MPH) NW 12 NW 9
VENT RATE (KT-FT) 35300 47280
CATEGORY DAY 3 3
INVERSION 71F/9AM 8PM 65F/9AM
DISPERSION 3 3
MAX ADI EARLY 24 FAIR 6 VERY POOR 31 FAIR
MAX ADI LATE 46 GEN GOOD 4 VERY POOR 67 GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 9 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-172030-
CLARION-
INCLUDING THE CITY OF CLARION
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 79 (-1) 58 (-10) 78
RH % (24H TREND) 67 (-12) 100 (0) 55
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1120 1820
MIXING HGT(FT-AGL/MSL)3660 5970
TRANSPORT WND (MPH) NW 13 NW 10
VENT RATE (KT-FT) 40260 53730
CATEGORY DAY 3 4
INVERSION 70F/8AM 8PM 64F/9AM
DISPERSION 3 4
MAX ADI EARLY 28 FAIR 5 VERY POOR 36 FAIR
MAX ADI LATE 55 GEN GOOD 3 VERY POOR 75 GOOD
MAX LVORI EARLY 8 8 9
MAX LVORI LATE 4 10 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-172030-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 78 (0) 58 (-9) 77
RH % (24H TREND) 69 (-11) 100 (0) 54
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR NW 5
PRECIP AMOUNT 0.02 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1070 1810
MIXING HGT(FT-AGL/MSL)3510 5950
TRANSPORT WND (MPH) NW 13 NW 12
VENT RATE (KT-FT) 38610 59500
CATEGORY DAY 3 4
INVERSION 70F/9AM 7PM 64F/9AM
DISPERSION 3 4
MAX ADI EARLY 27 FAIR 5 VERY POOR 36 FAIR
MAX ADI LATE 52 GEN GOOD 3 VERY POOR 79 GOOD
MAX LVORI EARLY 9 7 9
MAX LVORI LATE 4 10 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-172030-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 50 30 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 79 (-5) 59 (-10) 80
RH % (24H TREND) 77 (+2) 100 (0) 54
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.13 0.02 0.00
PRECIP DURATION 2 0
PRECIP BEGIN 9 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 920 1890
MIXING HGT(FT-AGL/MSL)3030 6200
TRANSPORT WND (MPH) NW 8 NW 9
VENT RATE (KT-FT) 21210 49600
CATEGORY DAY 2 3
INVERSION 72F/9AM 8PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 21 FAIR 6 VERY POOR 26 FAIR
MAX ADI LATE 27 FAIR 4 VERY POOR 68 GOOD
MAX LVORI EARLY 8 7 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-172030-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 80 (-5) 61 (-8) 80
RH % (24H TREND) 81 (+5) 100 (0) 55
WIND 20FT/EARLY(MPH) W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR NW 5
PRECIP AMOUNT 0.16 0.04 0.00
PRECIP DURATION 4 0
PRECIP BEGIN 9 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 830 1900
MIXING HGT(FT-AGL/MSL)2710 6240
TRANSPORT WND (MPH) NW 8 NW 9
VENT RATE (KT-FT) 18970 49920
CATEGORY DAY 2 3
INVERSION 72F/9AM 8PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 26 FAIR 5 VERY POOR 27 FAIR
MAX ADI LATE 28 FAIR 4 VERY POOR 69 GOOD
MAX LVORI EARLY 9 7 9
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-172030-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 40 0 0
TEMP (24H TREND) 80 (-2) 59 (-9) 80
RH % (24H TREND) 75 (-6) 100 (0) 58
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR NW 5
PRECIP AMOUNT 0.02 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 9 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1040 1870
MIXING HGT(FT-AGL/MSL)3400 6140
TRANSPORT WND (MPH) NW 12 NW 10
VENT RATE (KT-FT) 34000 55260
CATEGORY DAY 3 4
INVERSION 70F/8AM 8PM 65F/9AM
DISPERSION 3 4
MAX ADI EARLY 26 FAIR 6 VERY POOR 32 FAIR
MAX ADI LATE 42 GEN GOOD 3 VERY POOR 74 GOOD
MAX LVORI EARLY 9 8 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-172030-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 79 (-5) 60 (-9) 79
RH % (24H TREND) 83 (+5) 100 (0) 58
WIND 20FT/EARLY(MPH) W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR NW 5
PRECIP AMOUNT 0.14 0.05 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 9 PM
MIXING HGT(M-AGL/MSL) 830 1790
MIXING HGT(FT-AGL/MSL)2730 5880
TRANSPORT WND (MPH) W 10 NW 9
VENT RATE (KT-FT) 24570 47040
CATEGORY DAY 3 3
INVERSION 72F/9AM 7PM 66F/9AM
DISPERSION 3 3
MAX ADI EARLY 25 FAIR 5 VERY POOR 22 FAIR
MAX ADI LATE 29 FAIR 4 VERY POOR 63 GOOD
MAX LVORI EARLY 9 7 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-172030-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 60 50 0
TEMP (24H TREND) 79 (-3) 62 (-8) 79
RH % (24H TREND) 83 (0) 100 (0) 62
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.09 0.05 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 11 PM
MIXING HGT(M-AGL/MSL) 900 1760
MIXING HGT(FT-AGL/MSL)2960 5770
TRANSPORT WND (MPH) W 10 NW 9
VENT RATE (KT-FT) 26640 46160
CATEGORY DAY 3 3
INVERSION 72F/9AM 7PM 66F/9AM
DISPERSION 3 3
MAX ADI EARLY 25 FAIR 5 VERY POOR 20 GEN POOR
MAX ADI LATE 32 FAIR 3 VERY POOR 65 GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-172030-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 50 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 80 (-3) 60 (-9) 80
RH % (24H TREND) 82 (+2) 100 (0) 59
WIND 20FT/EARLY(MPH) W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR NW 5
PRECIP AMOUNT 0.14 0.05 0.00
PRECIP DURATION 4 0
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 800 1810
MIXING HGT(FT-AGL/MSL)2620 5940
TRANSPORT WND (MPH) W 10 NW 9
VENT RATE (KT-FT) 23580 47520
CATEGORY DAY 3 3
INVERSION 73F/9AM 7PM 67F/9AM
DISPERSION 3 3
MAX ADI EARLY 27 FAIR 5 VERY POOR 23 FAIR
MAX ADI LATE 32 FAIR 3 VERY POOR 66 GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-172030-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 80 (0) 60 (-7) 79
RH % (24H TREND) 81 (0) 100 (0) 57
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR NW 5
PRECIP AMOUNT 0.17 0.05 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 710 1640
MIXING HGT(FT-AGL/MSL)2330 5380
TRANSPORT WND (MPH) W 13 NW 10
VENT RATE (KT-FT) 25630 48420
CATEGORY DAY 3 4
INVERSION 70F/9AM 7PM 65F/9AM
DISPERSION 3 4
MAX ADI EARLY 25 FAIR 5 VERY POOR 26 FAIR
MAX ADI LATE 34 FAIR 3 VERY POOR 66 GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-172030-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 70 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 80 (-3) 62 (-7) 79
RH % (24H TREND) 83 (+3) 100 (0) 62
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.13 0.08 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 11 PM
MIXING HGT(M-AGL/MSL) 820 1730
MIXING HGT(FT-AGL/MSL)2700 5680
TRANSPORT WND (MPH) W 10 NW 9
VENT RATE (KT-FT) 24300 45440
CATEGORY DAY 3 3
INVERSION 72F/9AM 7PM 67F/9AM
DISPERSION 3 3
MAX ADI EARLY 28 FAIR 5 VERY POOR 23 FAIR
MAX ADI LATE 33 FAIR 3 VERY POOR 64 GOOD
MAX LVORI EARLY 9 8 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-172030-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 70 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 79 (0) 60 (-7) 78
RH % (24H TREND) 79 (-4) 100 (0) 58
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.15 0.07 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 12 AM
MIXING HGT(M-AGL/MSL) 740 1530
MIXING HGT(FT-AGL/MSL)2430 5010
TRANSPORT WND (MPH) W 12 NW 10
VENT RATE (KT-FT) 24300 45090
CATEGORY DAY 2 3
INVERSION 70F/9AM 7PM 65F/9AM
DISPERSION 2 3
MAX ADI EARLY 26 FAIR 4 VERY POOR 27 FAIR
MAX ADI LATE 34 FAIR 3 VERY POOR 64 GOOD
MAX LVORI EARLY 8 10 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-172030-
INDIANA-
INCLUDING THE CITY OF INDIANA
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 50 0 0
CHANCE OF THUNDER (%) 40 0 0
TEMP (24H TREND) 80 (0) 59 (-9) 79
RH % (24H TREND) 78 (-3) 100 (0) 60
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR NW 5
PRECIP AMOUNT 0.03 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 930 1780
MIXING HGT(FT-AGL/MSL)3060 5840
TRANSPORT WND (MPH) NW 12 NW 12
VENT RATE (KT-FT) 30600 58400
CATEGORY DAY 3 4
INVERSION 71F/9AM 7PM 65F/9AM
DISPERSION 3 4
MAX ADI EARLY 26 FAIR 7 POOR 28 FAIR
MAX ADI LATE 36 FAIR 3 VERY POOR 70 GOOD
MAX LVORI EARLY 9 8 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-172030-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 30 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 78 (-2) 59 (-8) 77
RH % (24H TREND) 81 (+3) 100 (0) 60
WIND 20FT/EARLY(MPH) W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR NW 5
PRECIP AMOUNT 0.05 0.01 0.00
PRECIP DURATION 3 0
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 790 1700
MIXING HGT(FT-AGL/MSL)2590 5570
TRANSPORT WND (MPH) W 10 NW 12
VENT RATE (KT-FT) 23310 55700
CATEGORY DAY 2 4
INVERSION 71F/9AM 7PM 65F/9AM
DISPERSION 2 4
MAX ADI EARLY 26 FAIR 6 VERY POOR 27 FAIR
MAX ADI LATE 34 FAIR 3 VERY POOR 69 GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-172030-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 79 (-6) 60 (-9) 79
RH % (24H TREND) 80 (+3) 100 (0) 54
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.23 0.05 0.00
PRECIP DURATION 4 0
PRECIP BEGIN 9 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 850 1870
MIXING HGT(FT-AGL/MSL)2790 6120
TRANSPORT WND (MPH) N 8 NW 9
VENT RATE (KT-FT) 19530 48960
CATEGORY DAY 2 3
INVERSION 72F/9AM 8PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 19 GEN POOR 5 VERY POOR 26 FAIR
MAX ADI LATE 24 FAIR 4 VERY POOR 68 GOOD
MAX LVORI EARLY 9 6 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-172030-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 50 40 0
TEMP (24H TREND) 80 (-3) 61 (-9) 80
RH % (24H TREND) 82 (+3) 100 (0) 54
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.17 0.06 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 800 1800
MIXING HGT(FT-AGL/MSL)2630 5920
TRANSPORT WND (MPH) W 8 NW 9
VENT RATE (KT-FT) 18410 47360
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 21 FAIR 5 VERY POOR 20 GEN POOR
MAX ADI LATE 24 FAIR 4 VERY POOR 66 GOOD
MAX LVORI EARLY 9 7 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-172030-
OHIO-
INCLUDING THE CITY OF WHEELING
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 79 (-5) 61 (-9) 79
RH % (24H TREND) 84 (+2) 100 (0) 58
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.10 0.04 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 850 1780
MIXING HGT(FT-AGL/MSL)2800 5850
TRANSPORT WND (MPH) W 9 NW 8
VENT RATE (KT-FT) 22400 40950
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 66F/9AM
DISPERSION 2 3
MAX ADI EARLY 21 FAIR 5 VERY POOR 20 GEN POOR
MAX ADI LATE 28 FAIR 4 VERY POOR 58 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-172030-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 60 50 0
TEMP (24H TREND) 81 (-1) 63 (-8) 80
RH % (24H TREND) 85 (+1) 100 (0) 61
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.05 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 10 PM
MIXING HGT(M-AGL/MSL) 840 1790
MIXING HGT(FT-AGL/MSL)2750 5870
TRANSPORT WND (MPH) W 8 NW 8
VENT RATE (KT-FT) 19250 41090
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 20 GEN POOR 4 VERY POOR 19 GEN POOR
MAX ADI LATE 24 FAIR 4 VERY POOR 59 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-172030-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 60 50 0
TEMP (24H TREND) 79 (-3) 63 (-7) 79
RH % (24H TREND) 89 (+3) 100 (0) 63
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.09 0.10 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 8 AM CONTINUING
PRECIP END CONTINUING 12 AM
MIXING HGT(M-AGL/MSL) 830 1780
MIXING HGT(FT-AGL/MSL)2720 5850
TRANSPORT WND (MPH) W 9 NW 8
VENT RATE (KT-FT) 21760 40950
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 18 GEN POOR 4 VERY POOR 19 GEN POOR
MAX ADI LATE 27 FAIR 3 VERY POOR 64 GOOD
MAX LVORI EARLY 9 10 9
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-172030-
MARION-
INCLUDING THE CITY OF FAIRMONT
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 79 (-4) 63 (-6) 78
RH % (24H TREND) 88 (+2) 100 (0) 64
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.10 0.10 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 2 AM
MIXING HGT(M-AGL/MSL) 920 1800
MIXING HGT(FT-AGL/MSL)3000 5890
TRANSPORT WND (MPH) W 9 NW 9
VENT RATE (KT-FT) 24000 47120
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 22 FAIR 5 VERY POOR 20 GEN POOR
MAX ADI LATE 30 FAIR 3 VERY POOR 64 GOOD
MAX LVORI EARLY 9 10 8
MAX LVORI LATE 5 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-172030-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 79 (-2) 63 (-6) 79
RH % (24H TREND) 86 (+1) 100 (0) 62
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.15 0.20 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 11 PM
MIXING HGT(M-AGL/MSL) 910 1740
MIXING HGT(FT-AGL/MSL)2990 5710
TRANSPORT WND (MPH) W 10 NW 9
VENT RATE (KT-FT) 26910 45680
CATEGORY DAY 3 3
INVERSION 72F/9AM 7PM 67F/9AM
DISPERSION 3 3
MAX ADI EARLY 24 FAIR 5 VERY POOR 20 GEN POOR
MAX ADI LATE 30 FAIR 3 VERY POOR 63 GOOD
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 5 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-172030-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 77 (-2) 62 (-5) 76
RH % (24H TREND) 87 (-2) 100 (0) 62
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.17 0.18 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 11 PM
MIXING HGT(M-AGL/MSL) 790 1690
MIXING HGT(FT-AGL/MSL)2600 5540
TRANSPORT WND (MPH) W 10 NW 10
VENT RATE (KT-FT) 23400 49860
CATEGORY DAY 2 4
INVERSION 70F/9AM 8PM 66F/9AM
DISPERSION 2 4
MAX ADI EARLY 24 FAIR 4 VERY POOR 23 FAIR
MAX ADI LATE 29 FAIR 3 VERY POOR 67 GOOD
MAX LVORI EARLY 9 10 9
MAX LVORI LATE 5 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-172030-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 90 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 78 (-1) 62 (-6) 77
RH % (24H TREND) 81 (-5) 100 (0) 60
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.15 0.23 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 12 AM
MIXING HGT(M-AGL/MSL) 770 1640
MIXING HGT(FT-AGL/MSL)2530 5370
TRANSPORT WND (MPH) W 12 NW 10
VENT RATE (KT-FT) 25300 48330
CATEGORY DAY 2 4
INVERSION 71F/9AM 7PM 67F/9AM
DISPERSION 2 4
MAX ADI EARLY 25 FAIR 5 VERY POOR 25 FAIR
MAX ADI LATE 32 FAIR 3 VERY POOR 70 GOOD
MAX LVORI EARLY 8 10 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-172030-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 78 (+1) 62 (-5) 76
RH % (24H TREND) 82 (-7) 100 (0) 61
WIND 20FT/EARLY(MPH) W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.12 0.19 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 2 AM
MIXING HGT(M-AGL/MSL) 710 1550
MIXING HGT(FT-AGL/MSL)2340 5090
TRANSPORT WND (MPH) W 13 NW 12
VENT RATE (KT-FT) 25740 50900
CATEGORY DAY 3 3
INVERSION 69F/9AM 8PM 65F/9AM
DISPERSION 3 3
MAX ADI EARLY 27 FAIR 6 VERY POOR 29 FAIR
MAX ADI LATE 33 FAIR 3 VERY POOR 73 GOOD
MAX LVORI EARLY 8 10 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-172030-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 80 (-1) 64 (-4) 78
RH % (24H TREND) 75 (-4) 100 (0) 59
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.14 0.13 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 650 1580
MIXING HGT(FT-AGL/MSL)2130 5190
TRANSPORT WND (MPH) W 12 W 12
VENT RATE (KT-FT) 21300 51900
CATEGORY DAY 2 3
INVERSION 69F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 24 FAIR 5 VERY POOR 26 FAIR
MAX ADI LATE 29 FAIR 2 VERY POOR 70 GOOD
MAX LVORI EARLY 8 10 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-172030-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1231 AM EDT MON AUG 17 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 60 70 0
CHANCE OF THUNDER (%) 50 50 0
TEMP (24H TREND) 76 (+1) 59 (-4) 75
RH % (24H TREND) 79 (-10) 100 (0) 66
WIND 20FT/EARLY(MPH) W 6 G23 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.06 0.12 0.00
PRECIP DURATION 2 3
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 670 1550
MIXING HGT(FT-AGL/MSL)2210 5090
TRANSPORT WND (MPH) W 15 W 13
VENT RATE (KT-FT) 28730 55990
CATEGORY DAY 3 4
INVERSION 66F/8AM 8PM 64F/9AM
DISPERSION 3 4
MAX ADI EARLY 36 FAIR 8 POOR 32 FAIR
MAX ADI LATE 39 FAIR 3 VERY POOR 78 GOOD
MAX LVORI EARLY 7 9 8
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
WEDNESDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 60. HIGHS IN THE UPPER 70S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE LOWER
60S. HIGHS IN THE UPPER 70S. LIGHT WINDS.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
50S. HIGHS IN THE UPPER 70S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
50S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 60. HIGHS IN THE MID 70S. WEST WINDS 5 TO 10 MPH.
SHALLENBERGER
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