592
FNUS51 KPBZ 201646
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1246 PM EDT WED MAY 20 2026
DISCUSSION
NORTHERLY WIND UP TO 5 MPH TONIGHT WILL GRADUALLY VEER OUT OF THE
NORTHEAST BY THE DAYTIME TOMORROW. WIND DURING THE DAY WILL BE
AROUND 5-10 MPH AND GRADUALLY VEER OUT OF THE EAST BY TOMORROW
EVENING. DURING THE DAY, THE LOWEST RELATIVE HUMIDITY (35%-40%)
IS FORECAST FOR NORTHWESTERN PA.
FRIDAY, EASTERLY WIND WILL BE UP TO 10-15 MPH, HOWEVER, CONDITIONS
WILL BE LESS DRY DUE RAIN IN THE FORECAST. WET CONDITIONS ARE
EXPECTED TO PERSIST THROUGH THE WEEKEND.
OHZ039-210830-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 50 0 0 70
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 45 (-19) 71 (+3) 52 68
RH % (24H TREND) 85 (-14) 44 (-38) 83 68
WIND 20FT/EARLY(MPH) N 8 NE 8 NE 6 E 8
WIND 20FT/LATE(MPH) NE 7 NE 8 E 6 E 9 G17
PRECIP AMOUNT 0.01 0.00 0.00 0.56
PRECIP DURATION 1 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 4 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1310 860
MIXING HGT(FT-AGL/MSL) 4300 2810
TRANSPORT WND (MPH) E 14 SE 17
VENT RATE (KT-FT) 51600 42150
CATEGORY DAY 3 3
INVERSION 10PM 49F/8AM 8PM 57F/8AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 49 GEN GOOD 9 POOR 34 FAIR
MAX ADI LATE 12 POOR 69 GOOD 11 POOR 48 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-210830-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 50 0 0 60
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 45 (-19) 70 (+3) 51 67
RH % (24H TREND) 82 (-18) 43 (-34) 80 65
WIND 20FT/EARLY(MPH) N 8 NE 8 NE 7 E 9 G17
WIND 20FT/LATE(MPH) N 7 NE 8 E 7 G17 E 11 G18
PRECIP AMOUNT 0.00 0.00 0.00 0.53
PRECIP DURATION 1 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 4 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1290 820
MIXING HGT(FT-AGL/MSL) 4230 2690
TRANSPORT WND (MPH) E 14 E 20
VENT RATE (KT-FT) 50760 45730
CATEGORY DAY 3 3
INVERSION 10PM 49F/8AM 8PM 56F/8AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 49 GEN GOOD 9 POOR 33 FAIR
MAX ADI LATE 12 POOR 68 GOOD 12 POOR 44 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-210830-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 50 0 0 60
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 44 (-21) 70 (+4) 50 66
RH % (24H TREND) 82 (-17) 42 (-34) 78 62
WIND 20FT/EARLY(MPH) N 7 NE 7 NE 6 E 9 G17
WIND 20FT/LATE(MPH) N 6 NE 7 E 6 G17 E 11 G19
PRECIP AMOUNT 0.00 0.00 0.00 0.45
PRECIP DURATION 1 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 1 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1370 840
MIXING HGT(FT-AGL/MSL) 4490 2770
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 49390 49860
CATEGORY DAY 4 3
INVERSION 10PM 49F/8AM 8PM 56F/8AM
DISPERSION 4 3
MAX ADI EARLY 18 GEN POOR 49 GEN GOOD 9 POOR 39 FAIR
MAX ADI LATE 10 POOR 69 GOOD 12 POOR 48 GEN GOOD
MAX LVORI EARLY 3 4 3 4
MAX LVORI LATE 4 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-210830-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 40 0 0 70
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 44 (-20) 70 (+2) 52 69
RH % (24H TREND) 87 (-13) 44 (-41) 87 71
WIND 20FT/EARLY(MPH) NE 8 NE 7 NE 6 E 6
WIND 20FT/LATE(MPH) NE 6 NE 8 LGT/VAR E 8
PRECIP AMOUNT 0.00 0.00 0.00 0.59
PRECIP DURATION 1 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 2 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1290 890
MIXING HGT(FT-AGL/MSL) 4220 2920
TRANSPORT WND (MPH) NE 14 SE 17
VENT RATE (KT-FT) 50640 43800
CATEGORY DAY 3 3
INVERSION 9PM 48F/8AM 8PM 58F/8AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 52 GEN GOOD 10 POOR 32 FAIR
MAX ADI LATE 12 POOR 71 GOOD 8 POOR 54 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-210830-
HARRISON-
INCLUDING THE CITY OF CADIZ
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE SHOWERS
CHANCE PRECIP (%) 60 0 0 70
CHANCE OF THUNDER (%) 10 0 0 0
TEMP (24H TREND) 45 (-18) 70 (0) 52 68
RH % (24H TREND) 88 (-12) 43 (-39) 86 68
WIND 20FT/EARLY(MPH) N 8 NE 8 E 7 E 9 G17
WIND 20FT/LATE(MPH) NE 7 NE 8 E 7 E 10 G18
PRECIP AMOUNT 0.01 0.00 0.00 0.59
PRECIP DURATION 4 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 5 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1280 780
MIXING HGT(FT-AGL/MSL) 4210 2550
TRANSPORT WND (MPH) E 13 E 18
VENT RATE (KT-FT) 46310 40800
CATEGORY DAY 3 3
INVERSION 2AM 49F/8AM 8PM 57F/8AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 41 GEN GOOD 11 POOR 36 FAIR
MAX ADI LATE 13 GEN POOR 64 GOOD 11 POOR 43 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-210830-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE SHOWERS
CHANCE PRECIP (%) 60 0 0 70
CHANCE OF THUNDER (%) 10 0 0 0
TEMP (24H TREND) 46 (-18) 70 (-1) 52 67
RH % (24H TREND) 87 (-13) 43 (-36) 83 65
WIND 20FT/EARLY(MPH) N 8 NE 8 E 7 E 9 G17
WIND 20FT/LATE(MPH) N 6 NE 8 E 7 E 10 G18
PRECIP AMOUNT 0.01 0.00 0.00 0.55
PRECIP DURATION 4 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 6 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1300 810
MIXING HGT(FT-AGL/MSL) 4270 2650
TRANSPORT WND (MPH) E 13 E 18
VENT RATE (KT-FT) 46970 42400
CATEGORY DAY 3 3
INVERSION 2AM 50F/8AM 8PM 56F/7AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 40 FAIR 18 GEN POOR 43 GEN GOOD
MAX ADI LATE 11 POOR 61 GOOD 11 POOR 44 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-210830-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE TSTMS
CHANCE PRECIP (%) 60 0 0 80
CHANCE OF THUNDER (%) 10 0 0 20
TEMP (24H TREND) 45 (-19) 72 (+1) 53 70
RH % (24H TREND) 87 (-11) 44 (-40) 89 72
WIND 20FT/EARLY(MPH) NE 8 NE 7 NE 6 E 5
WIND 20FT/LATE(MPH) NE 6 NE 7 LGT/VAR E 7
PRECIP AMOUNT 0.02 0.00 0.00 0.57
PRECIP DURATION 2 5
PRECIP BEGIN 6 PM 8 AM
PRECIP END 5 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1240 860
MIXING HGT(FT-AGL/MSL) 4080 2810
TRANSPORT WND (MPH) E 14 SE 16
VENT RATE (KT-FT) 48960 39340
CATEGORY DAY 3 3
INVERSION 10PM 49F/8AM 8PM 61F/9AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 45 GEN GOOD 9 POOR 33 FAIR
MAX ADI LATE 10 POOR 63 GOOD 8 POOR 51 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-210830-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE TSTMS
CHANCE PRECIP (%) 70 0 0 80
CHANCE OF THUNDER (%) 10 0 0 20
TEMP (24H TREND) 46 (-17) 72 (0) 53 70
RH % (24H TREND) 89 (-11) 45 (-40) 88 69
WIND 20FT/EARLY(MPH) NE 7 NE 6 NE 5 E 6
WIND 20FT/LATE(MPH) NE 6 NE 6 E 5 E 7 G17
PRECIP AMOUNT 0.02 0.00 0.00 0.61
PRECIP DURATION 3 5
PRECIP BEGIN 6 PM 8 AM
PRECIP END 5 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1260 830
MIXING HGT(FT-AGL/MSL) 4140 2720
TRANSPORT WND (MPH) E 13 SE 16
VENT RATE (KT-FT) 45540 38080
CATEGORY DAY 3 3
INVERSION 2AM 50F/8AM 8PM 59F/8AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 42 GEN GOOD 9 POOR 33 FAIR
MAX ADI LATE 10 POOR 61 GOOD 8 POOR 48 GEN GOOD
MAX LVORI EARLY 4 5 3 4
MAX LVORI LATE 5 1 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-210830-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE SHOWERS
CHANCE PRECIP (%) 80 0 0 80
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 46 (-17) 70 (-3) 52 68
RH % (24H TREND) 93 (-7) 50 (-32) 90 70
WIND 20FT/EARLY(MPH) N 8 NE 8 E 7 E 8
WIND 20FT/LATE(MPH) NE 7 NE 8 E 7 E 9 G18
PRECIP AMOUNT 0.03 0.00 0.00 0.55
PRECIP DURATION 7 5
PRECIP BEGIN 6 PM 8 AM
PRECIP END 6 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1070 750
MIXING HGT(FT-AGL/MSL) 3500 2480
TRANSPORT WND (MPH) E 14 SE 16
VENT RATE (KT-FT) 42000 34720
CATEGORY DAY 3 3
INVERSION 4AM 50F/8AM 8PM 58F/8AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 38 FAIR 19 GEN POOR 36 FAIR
MAX ADI LATE 12 POOR 57 GEN GOOD 11 POOR 46 GEN GOOD
MAX LVORI EARLY 4 5 3 4
MAX LVORI LATE 5 2 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-210830-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE TSTMS
CHANCE PRECIP (%) 80 0 0 80
CHANCE OF THUNDER (%) 20 0 0 20
TEMP (24H TREND) 46 (-17) 72 (-2) 53 70
RH % (24H TREND) 97 (-3) 50 (-34) 91 73
WIND 20FT/EARLY(MPH) N 8 NE 6 NE 6 E 6
WIND 20FT/LATE(MPH) NE 6 NE 6 E 5 E 7
PRECIP AMOUNT 0.08 0.00 0.00 0.57
PRECIP DURATION 7 5
PRECIP BEGIN 6 PM 8 AM
PRECIP END 6 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1120 750
MIXING HGT(FT-AGL/MSL) 3660 2470
TRANSPORT WND (MPH) E 14 SE 15
VENT RATE (KT-FT) 43920 32110
CATEGORY DAY 3 3
INVERSION 4AM 50F/8AM 8PM 61F/9AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 36 FAIR 9 POOR 33 FAIR
MAX ADI LATE 11 POOR 59 GEN GOOD 8 POOR 44 GEN GOOD
MAX LVORI EARLY 5 5 3 5
MAX LVORI LATE 6 2 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-210830-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 40 0 80
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 47 (-15) 71 (-4) 53 70
RH % (24H TREND) 96 (-3) 55 (-28) 89 73
WIND 20FT/EARLY(MPH) N 7 G17 NE 6 NE 6 E 5
WIND 20FT/LATE(MPH) N 6 NE 6 E 5 E 7
PRECIP AMOUNT 0.14 0.01 0.00 0.56
PRECIP DURATION 8 1 5
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 9 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1040 720
MIXING HGT(FT-AGL/MSL) 3400 2370
TRANSPORT WND (MPH) E 14 SE 16
VENT RATE (KT-FT) 40800 33180
CATEGORY DAY 3 3
INVERSION 5AM 51F/8AM 8PM 59F/8AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 33 FAIR 10 POOR 31 FAIR
MAX ADI LATE 10 POOR 47 GEN GOOD 8 POOR 45 GEN GOOD
MAX LVORI EARLY 4 5 3 4
MAX LVORI LATE 5 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-210830-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE SHOWERS
CHANCE PRECIP (%) 0 0 0 30
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 43 (-19) 69 (+6) 48 66
RH % (24H TREND) 82 (-18) 41 (-33) 72 58
WIND 20FT/EARLY(MPH) N 6 NE 6 NE 6 E 10 G17
WIND 20FT/LATE(MPH) N 5 NE 7 E 7 E 12 G20
PRECIP AMOUNT 0.00 0.00 0.00 0.24
PRECIP DURATION 1
PRECIP BEGIN 2 PM
PRECIP END CONTINUING
MIXING HGT(M-AGL/MSL) 1450 910
MIXING HGT(FT-AGL/MSL) 4750 2980
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 52250 53640
CATEGORY DAY 4 4
INVERSION 8PM 48F/8AM 8PM 54F/8AM
DISPERSION 4 4
MAX ADI EARLY 17 GEN POOR 46 GEN GOOD 8 POOR 41 GEN GOOD
MAX ADI LATE 8 POOR 71 GOOD 13 GEN POOR 49 GEN GOOD
MAX LVORI EARLY 3 4 3 3
MAX LVORI LATE 4 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-210830-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE SHOWERS
CHANCE PRECIP (%) 0 0 0 30
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 43 (-20) 70 (+6) 46 65
RH % (24H TREND) 80 (-17) 37 (-35) 70 54
WIND 20FT/EARLY(MPH) N 5 NE 5 NE 5 E 8 G17
WIND 20FT/LATE(MPH) LGT/VAR NE 5 E 6 SE 9 G19
PRECIP AMOUNT 0.00 0.00 0.00 0.23
PRECIP DURATION 1
PRECIP BEGIN 2 PM
PRECIP END CONTINUING
MIXING HGT(M-AGL/MSL) 1530 990
MIXING HGT(FT-AGL/MSL) 5000 3240
TRANSPORT WND (MPH) E 13 SE 20
VENT RATE (KT-FT) 55000 55080
CATEGORY DAY 4 4
INVERSION 8PM 47F/8AM 8PM 52F/8AM
DISPERSION 4 4
MAX ADI EARLY 9 POOR 48 GEN GOOD 6 VERY POOR 56 GEN GOOD
MAX ADI LATE 8 POOR 71 GOOD 9 POOR 63 GOOD
MAX LVORI EARLY 3 4 3 3
MAX LVORI LATE 4 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-210830-
FOREST-
INCLUDING THE CITY OF TIONESTA
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE SHOWERS
CHANCE PRECIP (%) 0 0 0 20
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 43 (-20) 69 (+3) 44 65
RH % (24H TREND) 77 (-18) 33 (-33) 68 49
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR E 6
WIND 20FT/LATE(MPH) LGT/VAR NE 5 LGT/VAR SE 8 G18
PRECIP AMOUNT 0.00 0.00 0.00 0.19
PRECIP DURATION 0
PRECIP BEGIN 2 PM
PRECIP END CONTINUING
MIXING HGT(M-AGL/MSL) 1500 1020
MIXING HGT(FT-AGL/MSL) 4910 3350
TRANSPORT WND (MPH) E 12 SE 18
VENT RATE (KT-FT) 49100 53600
CATEGORY DAY 3 4
INVERSION 8PM 45F/7AM 8PM 50F/8AM
DISPERSION 3 4
MAX ADI EARLY 8 POOR 49 GEN GOOD 6 VERY POOR 56 GEN GOOD
MAX ADI LATE 8 POOR 76 GOOD 6 VERY POOR 64 GOOD
MAX LVORI EARLY 3 4 3 3
MAX LVORI LATE 4 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-210830-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 40 0 0 40
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 44 (-20) 71 (+4) 49 66
RH % (24H TREND) 84 (-15) 40 (-36) 75 59
WIND 20FT/EARLY(MPH) N 6 NE 5 LGT/VAR E 9 G17
WIND 20FT/LATE(MPH) LGT/VAR NE 6 E 6 E 11 G19
PRECIP AMOUNT 0.01 0.00 0.00 0.37
PRECIP DURATION 1 1
PRECIP BEGIN 6 PM 2 PM
PRECIP END 11 PM CONTINUING
MIXING HGT(M-AGL/MSL) 1480 890
MIXING HGT(FT-AGL/MSL) 4840 2900
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 53240 52200
CATEGORY DAY 4 4
INVERSION 10PM 49F/8AM 8PM 55F/8AM
DISPERSION 4 4
MAX ADI EARLY 17 GEN POOR 45 GEN GOOD 7 POOR 43 GEN GOOD
MAX ADI LATE 8 POOR 69 GOOD 13 GEN POOR 49 GEN GOOD
MAX LVORI EARLY 4 4 3 3
MAX LVORI LATE 4 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-210830-
BUTLER-
INCLUDING THE CITY OF BUTLER
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 40 0 0 40
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 44 (-19) 70 (0) 47 65
RH % (24H TREND) 89 (-8) 43 (-37) 78 62
WIND 20FT/EARLY(MPH) N 6 NE 6 LGT/VAR E 9 G17
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 7 E 11 G20
PRECIP AMOUNT 0.01 0.00 0.00 0.40
PRECIP DURATION 2 1
PRECIP BEGIN 6 PM 2 PM
PRECIP END 5 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1420 920
MIXING HGT(FT-AGL/MSL) 4640 3020
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 51040 54360
CATEGORY DAY 4 4
INVERSION 9PM 49F/8AM 8PM 54F/8AM
DISPERSION 4 4
MAX ADI EARLY 16 GEN POOR 45 GEN GOOD 6 VERY POOR 43 GEN GOOD
MAX ADI LATE 8 POOR 64 GOOD 12 POOR 49 GEN GOOD
MAX LVORI EARLY 4 5 3 4
MAX LVORI LATE 4 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-210830-
CLARION-
INCLUDING THE CITY OF CLARION
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 20 0 0 30
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 45 (-17) 70 (+2) 46 64
RH % (24H TREND) 84 (-10) 36 (-33) 71 54
WIND 20FT/EARLY(MPH) N 5 NE 5 LGT/VAR E 8 G18
WIND 20FT/LATE(MPH) LGT/VAR NE 5 E 6 SE 10 G20
PRECIP AMOUNT 0.01 0.00 0.00 0.30
PRECIP DURATION 1 1
PRECIP BEGIN 6 PM 2 PM
PRECIP END 1 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1530 990
MIXING HGT(FT-AGL/MSL) 5020 3240
TRANSPORT WND (MPH) E 12 SE 21
VENT RATE (KT-FT) 50200 58320
CATEGORY DAY 3 4
INVERSION 8PM 47F/7AM 8PM 52F/8AM
DISPERSION 3 4
MAX ADI EARLY 14 GEN POOR 47 GEN GOOD 5 VERY POOR 55 GEN GOOD
MAX ADI LATE 8 POOR 70 GOOD 11 POOR 60 GEN GOOD
MAX LVORI EARLY 4 4 3 3
MAX LVORI LATE 4 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-210830-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 30 0 0 30
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 46 (-17) 68 (-2) 46 63
RH % (24H TREND) 83 (-14) 36 (-35) 70 53
WIND 20FT/EARLY(MPH) N 5 NE 6 LGT/VAR E 8 G19
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 6 SE 10 G20
PRECIP AMOUNT 0.02 0.00 0.00 0.29
PRECIP DURATION 2 1
PRECIP BEGIN 6 PM 2 PM
PRECIP END 6 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1510 940
MIXING HGT(FT-AGL/MSL) 4940 3100
TRANSPORT WND (MPH) E 12 SE 21
VENT RATE (KT-FT) 49400 55800
CATEGORY DAY 3 4
INVERSION 9PM 48F/7AM 8PM 51F/8AM
DISPERSION 3 4
MAX ADI EARLY 15 GEN POOR 47 GEN GOOD 5 VERY POOR 45 GEN GOOD
MAX ADI LATE 7 POOR 67 GOOD 12 POOR 50 GEN GOOD
MAX LVORI EARLY 3 4 3 3
MAX LVORI LATE 4 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-210830-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 60 0 0 60
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-18) 70 (0) 52 66
RH % (24H TREND) 85 (-12) 43 (-35) 76 61
WIND 20FT/EARLY(MPH) N 6 NE 5 E 5 E 8 G17
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 6 E 10 G19
PRECIP AMOUNT 0.01 0.00 0.00 0.47
PRECIP DURATION 2 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 5 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1360 920
MIXING HGT(FT-AGL/MSL) 4470 3010
TRANSPORT WND (MPH) E 13 SE 20
VENT RATE (KT-FT) 49170 51170
CATEGORY DAY 4 4
INVERSION 11PM 50F/8AM 8PM 55F/7AM
DISPERSION 4 4
MAX ADI EARLY 17 GEN POOR 44 GEN GOOD 8 POOR 52 GEN GOOD
MAX ADI LATE 8 POOR 65 GOOD 12 POOR 51 GEN GOOD
MAX LVORI EARLY 4 4 3 3
MAX LVORI LATE 4 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-210830-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE SHOWERS
CHANCE PRECIP (%) 70 0 0 60
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 48 (-17) 69 (-5) 52 65
RH % (24H TREND) 93 (+1) 49 (-33) 82 62
WIND 20FT/EARLY(MPH) N 8 NE 7 E 7 E 9 G17
WIND 20FT/LATE(MPH) N 5 E 8 E 7 E 12 G20
PRECIP AMOUNT 0.02 0.00 0.00 0.51
PRECIP DURATION 4 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 6 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1270 980
MIXING HGT(FT-AGL/MSL) 4180 3210
TRANSPORT WND (MPH) E 13 SE 20
VENT RATE (KT-FT) 45980 54570
CATEGORY DAY 3 4
INVERSION 12AM 52F/4AM 8PM 56F/7AM
DISPERSION 3 4
MAX ADI EARLY 17 GEN POOR 38 FAIR 18 GEN POOR 42 GEN GOOD
MAX ADI LATE 8 POOR 59 GEN GOOD 11 POOR 47 GEN GOOD
MAX LVORI EARLY 4 5 3 4
MAX LVORI LATE 5 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-210830-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS NONE NONE SHOWERS
CHANCE PRECIP (%) 40 0 0 40
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-16) 69 (-3) 48 64
RH % (24H TREND) 94 (-1) 45 (-33) 80 59
WIND 20FT/EARLY(MPH) N 6 NE 6 LGT/VAR E 9 G18
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 6 SE 11 G20
PRECIP AMOUNT 0.02 0.00 0.00 0.42
PRECIP DURATION 2 1
PRECIP BEGIN 6 PM 2 PM
PRECIP END 6 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1360 990
MIXING HGT(FT-AGL/MSL) 4480 3240
TRANSPORT WND (MPH) E 12 SE 21
VENT RATE (KT-FT) 44800 58320
CATEGORY DAY 3 4
INVERSION 9PM 51F/8AM 8PM 53F/7AM
DISPERSION 3 4
MAX ADI EARLY 15 GEN POOR 43 GEN GOOD 8 POOR 44 GEN GOOD
MAX ADI LATE 6 VERY POOR 61 GOOD 12 POOR 51 GEN GOOD
MAX LVORI EARLY 4 5 3 3
MAX LVORI LATE 5 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-210830-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 70 30 0 70
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 47 (-17) 68 (-6) 52 65
RH % (24H TREND) 95 (0) 53 (-29) 85 67
WIND 20FT/EARLY(MPH) N 8 NE 8 E 7 E 8 G17
WIND 20FT/LATE(MPH) N 6 E 9 E 7 E 11 G19
PRECIP AMOUNT 0.03 0.01 0.00 0.53
PRECIP DURATION 8 1 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 12 PM CONTINUING
MIXING HGT(M-AGL/MSL) 1090 820
MIXING HGT(FT-AGL/MSL) 3560 2690
TRANSPORT WND (MPH) E 13 SE 18
VENT RATE (KT-FT) 39160 43040
CATEGORY DAY 3 3
INVERSION 2AM 51F/4AM 8PM 56F/6AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 36 FAIR 19 GEN POOR 39 FAIR
MAX ADI LATE 11 POOR 53 GEN GOOD 11 POOR 42 GEN GOOD
MAX LVORI EARLY 4 5 3 3
MAX LVORI LATE 5 2 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-210830-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 80 60 0 70
CHANCE OF THUNDER (%) 30 0 0 0
TEMP (24H TREND) 48 (-15) 67 (-9) 53 66
RH % (24H TREND) 99 (+4) 67 (-13) 86 72
WIND 20FT/EARLY(MPH) N 7 NE 6 E 6 E 6
WIND 20FT/LATE(MPH) N 6 NE 7 LGT/VAR E 9 G17
PRECIP AMOUNT 0.12 0.06 0.00 0.47
PRECIP DURATION 10 2 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 2 PM CONTINUING
MIXING HGT(M-AGL/MSL) 850 740
MIXING HGT(FT-AGL/MSL) 2800 2430
TRANSPORT WND (MPH) E 13 SE 17
VENT RATE (KT-FT) 30800 36450
CATEGORY DAY 3 3
INVERSION NONE NONE 8PM 56F/4AM
DISPERSION 3 3
MAX ADI EARLY 16 GEN POOR 30 FAIR 15 GEN POOR 44 GEN GOOD
MAX ADI LATE 11 POOR 41 GEN GOOD 8 POOR 47 GEN GOOD
MAX LVORI EARLY 4 5 4 4
MAX LVORI LATE 6 4 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-210830-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 70 50 0 50
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 48 (-16) 69 (-6) 51 65
RH % (24H TREND) 100 (+8) 55 (-25) 88 63
WIND 20FT/EARLY(MPH) N 7 NE 7 E 6 E 10 G21
WIND 20FT/LATE(MPH) N 5 E 7 E 6 SE 13 G23
PRECIP AMOUNT 0.03 0.01 0.00 0.43
PRECIP DURATION 7 1 1
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 2 PM CONTINUING
MIXING HGT(M-AGL/MSL) 1110 940
MIXING HGT(FT-AGL/MSL) 3650 3090
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 40150 55620
CATEGORY DAY 3 4
INVERSION 12AM 52F/4AM 8PM 54F/5AM
DISPERSION 3 4
MAX ADI EARLY 15 GEN POOR 35 FAIR 17 GEN POOR 42 GEN GOOD
MAX ADI LATE 7 POOR 46 GEN GOOD 11 POOR 48 GEN GOOD
MAX LVORI EARLY 5 5 3 4
MAX LVORI LATE 6 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-210830-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 80 60 0 60
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 49 (-14) 68 (-7) 50 64
RH % (24H TREND) 97 (+4) 53 (-24) 86 58
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR SE 11 G23
WIND 20FT/LATE(MPH) LGT/VAR E 5 SE 6 G20 SE 13 G23
PRECIP AMOUNT 0.07 0.03 0.00 0.39
PRECIP DURATION 6 2 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 2 PM CONTINUING
MIXING HGT(M-AGL/MSL) 850 820
MIXING HGT(FT-AGL/MSL) 2780 2700
TRANSPORT WND (MPH) E 13 SE 24
VENT RATE (KT-FT) 30580 56700
CATEGORY DAY 3 4
INVERSION 2AM 54F/4AM 8PM 53F/4AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 25 FAIR 9 POOR 44 GEN GOOD
MAX ADI LATE 5 VERY POOR 36 FAIR 15 GEN POOR 51 GEN GOOD
MAX LVORI EARLY 5 5 3 3
MAX LVORI LATE 6 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-210830-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 70 0 60
CHANCE OF THUNDER (%) 30 0 0 0
TEMP (24H TREND) 49 (-15) 68 (-9) 52 65
RH % (24H TREND) 100 (+8) 64 (-8) 88 67
WIND 20FT/EARLY(MPH) N 6 NE 5 LGT/VAR E 9 G20
WIND 20FT/LATE(MPH) LGT/VAR NE 6 LGT/VAR SE 11 G22
PRECIP AMOUNT 0.10 0.07 0.00 0.40
PRECIP DURATION 8 3 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 2 PM CONTINUING
MIXING HGT(M-AGL/MSL) 860 750
MIXING HGT(FT-AGL/MSL) 2830 2450
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 31130 44100
CATEGORY DAY 3 3
INVERSION 1AM 53F/4AM 8PM 55F/4AM
DISPERSION 3 3
MAX ADI EARLY 14 GEN POOR 26 FAIR 8 POOR 42 GEN GOOD
MAX ADI LATE 8 POOR 38 FAIR 9 POOR 44 GEN GOOD
MAX LVORI EARLY 5 5 4 4
MAX LVORI LATE 6 4 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-210830-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 80 0 60
CHANCE OF THUNDER (%) 30 0 0 0
TEMP (24H TREND) 49 (-13) 65 (-10) 50 62
RH % (24H TREND) 100 (+5) 62 (-12) 91 66
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR SE 9 G22
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SE 6 G18 SE 10 G23
PRECIP AMOUNT 0.12 0.10 0.00 0.39
PRECIP DURATION 6 3 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 1 PM CONTINUING
MIXING HGT(M-AGL/MSL) 680 640
MIXING HGT(FT-AGL/MSL) 2250 2110
TRANSPORT WND (MPH) E 13 SE 23
VENT RATE (KT-FT) 24750 42200
CATEGORY DAY 3 3
INVERSION 1AM 53F/4AM 9PM 53F/4AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 19 GEN POOR 10 POOR 44 GEN GOOD
MAX ADI LATE 5 VERY POOR 33 FAIR 14 GEN POOR 49 GEN GOOD
MAX LVORI EARLY 5 6 4 4
MAX LVORI LATE 7 4 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-210830-
INDIANA-
INCLUDING THE CITY OF INDIANA
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 50 30 0 40
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 48 (-16) 68 (-6) 47 64
RH % (24H TREND) 95 (+4) 46 (-34) 81 58
WIND 20FT/EARLY(MPH) N 5 NE 6 E 5 E 9 G21
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 6 G17 SE 12 G22
PRECIP AMOUNT 0.03 0.00 0.00 0.40
PRECIP DURATION 2 0 1
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 8 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1310 910
MIXING HGT(FT-AGL/MSL) 4300 2990
TRANSPORT WND (MPH) E 12 SE 21
VENT RATE (KT-FT) 43000 53820
CATEGORY DAY 3 4
INVERSION 10PM 50F/7AM 8PM 51F/5AM
DISPERSION 3 4
MAX ADI EARLY 15 GEN POOR 37 FAIR 8 POOR 43 GEN GOOD
MAX ADI LATE 5 VERY POOR 57 GEN GOOD 12 POOR 49 GEN GOOD
MAX LVORI EARLY 4 5 3 3
MAX LVORI LATE 6 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-210830-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 60 50 0 50
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 49 (-14) 68 (-6) 49 63
RH % (24H TREND) 93 (+3) 50 (-30) 80 59
WIND 20FT/EARLY(MPH) N 5 NE 5 LGT/VAR E 9 G22
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 6 G17 SE 12 G23
PRECIP AMOUNT 0.03 0.00 0.00 0.40
PRECIP DURATION 3 1 1
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 9 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1110 870
MIXING HGT(FT-AGL/MSL) 3630 2840
TRANSPORT WND (MPH) E 13 SE 22
VENT RATE (KT-FT) 39930 53960
CATEGORY DAY 3 4
INVERSION 11PM 52F/5AM 8PM 52F/5AM
DISPERSION 3 4
MAX ADI EARLY 14 GEN POOR 32 FAIR 8 POOR 42 GEN GOOD
MAX ADI LATE 5 VERY POOR 52 GEN GOOD 13 GEN POOR 51 GEN GOOD
MAX LVORI EARLY 4 5 3 3
MAX LVORI LATE 6 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-210830-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS NONE NONE SHOWERS
CHANCE PRECIP (%) 60 0 0 60
CHANCE OF THUNDER (%) 10 0 0 0
TEMP (24H TREND) 47 (-17) 70 (0) 52 66
RH % (24H TREND) 85 (-13) 43 (-33) 77 63
WIND 20FT/EARLY(MPH) N 7 NE 6 E 6 E 8
WIND 20FT/LATE(MPH) N 5 NE 7 E 6 E 10 G18
PRECIP AMOUNT 0.01 0.00 0.00 0.52
PRECIP DURATION 4 4
PRECIP BEGIN 6 PM 8 AM
PRECIP END 5 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1290 850
MIXING HGT(FT-AGL/MSL) 4250 2800
TRANSPORT WND (MPH) E 13 SE 18
VENT RATE (KT-FT) 46750 44800
CATEGORY DAY 3 3
INVERSION 3AM 50F/8AM 8PM 56F/7AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 42 GEN GOOD 17 GEN POOR 46 GEN GOOD
MAX ADI LATE 8 POOR 62 GOOD 11 POOR 51 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 4 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-210830-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 70 20 0 70
CHANCE OF THUNDER (%) 10 0 0 0
TEMP (24H TREND) 48 (-16) 70 (-2) 54 67
RH % (24H TREND) 87 (-13) 47 (-34) 80 65
WIND 20FT/EARLY(MPH) N 8 NE 7 E 7 E 8
WIND 20FT/LATE(MPH) N 6 E 8 E 7 E 10 G18
PRECIP AMOUNT 0.02 0.00 0.00 0.56
PRECIP DURATION 7 0 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 8 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1160 790
MIXING HGT(FT-AGL/MSL) 3800 2600
TRANSPORT WND (MPH) E 13 SE 17
VENT RATE (KT-FT) 41800 39000
CATEGORY DAY 3 3
INVERSION 4AM 51F/8AM 8PM 57F/6AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 39 FAIR 19 GEN POOR 43 GEN GOOD
MAX ADI LATE 9 POOR 59 GEN GOOD 11 POOR 47 GEN GOOD
MAX LVORI EARLY 4 4 3 3
MAX LVORI LATE 4 1 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-210830-
OHIO-
INCLUDING THE CITY OF WHEELING
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 80 20 0 70
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 48 (-16) 69 (-4) 53 67
RH % (24H TREND) 92 (-7) 53 (-32) 83 69
WIND 20FT/EARLY(MPH) N 9 NE 8 E 7 E 8
WIND 20FT/LATE(MPH) N 7 E 8 E 7 E 10 G18
PRECIP AMOUNT 0.02 0.00 0.00 0.54
PRECIP DURATION 9 0 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 8 AM CONTINUING
MIXING HGT(M-AGL/MSL) 1030 760
MIXING HGT(FT-AGL/MSL) 3370 2480
TRANSPORT WND (MPH) E 14 SE 17
VENT RATE (KT-FT) 40440 37200
CATEGORY DAY 3 3
INVERSION 5AM 51F/8AM 8PM 56F/5AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 37 FAIR 19 GEN POOR 40 FAIR
MAX ADI LATE 11 POOR 56 GEN GOOD 11 POOR 45 GEN GOOD
MAX LVORI EARLY 4 5 3 3
MAX LVORI LATE 5 2 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-210830-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 40 0 80
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 49 (-14) 70 (-5) 55 69
RH % (24H TREND) 94 (-3) 59 (-25) 83 73
WIND 20FT/EARLY(MPH) N 8 NE 7 E 7 E 7
WIND 20FT/LATE(MPH) N 6 NE 8 E 6 E 8 G17
PRECIP AMOUNT 0.10 0.02 0.00 0.56
PRECIP DURATION 9 1 5
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 11 AM CONTINUING
MIXING HGT(M-AGL/MSL) 960 730
MIXING HGT(FT-AGL/MSL) 3160 2400
TRANSPORT WND (MPH) E 14 SE 15
VENT RATE (KT-FT) 37920 31200
CATEGORY DAY 3 3
INVERSION NONE NONE 8PM 57F/4AM
DISPERSION 3 3
MAX ADI EARLY 16 GEN POOR 33 FAIR 19 GEN POOR 36 FAIR
MAX ADI LATE 11 POOR 44 GEN GOOD 9 POOR 48 GEN GOOD
MAX LVORI EARLY 4 5 3 4
MAX LVORI LATE 5 3 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-210830-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 70 0 70
CHANCE OF THUNDER (%) 30 0 0 0
TEMP (24H TREND) 50 (-13) 69 (-7) 56 68
RH % (24H TREND) 98 (+5) 64 (-15) 86 75
WIND 20FT/EARLY(MPH) N 7 NE 6 E 6 E 6
WIND 20FT/LATE(MPH) NE 6 NE 6 E 5 E 7
PRECIP AMOUNT 0.19 0.05 0.00 0.55
PRECIP DURATION 9 2 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 12 PM CONTINUING
MIXING HGT(M-AGL/MSL) 880 710
MIXING HGT(FT-AGL/MSL) 2890 2330
TRANSPORT WND (MPH) E 14 SE 15
VENT RATE (KT-FT) 34680 30290
CATEGORY DAY 3 3
INVERSION NONE NONE 8PM 59F/8AM
DISPERSION 3 3
MAX ADI EARLY 15 GEN POOR 29 FAIR 9 POOR 35 FAIR
MAX ADI LATE 11 POOR 42 GEN GOOD 8 POOR 44 GEN GOOD
MAX LVORI EARLY 5 5 3 4
MAX LVORI LATE 5 4 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-210830-
MARION-
INCLUDING THE CITY OF FAIRMONT
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 90 80 0 70
CHANCE OF THUNDER (%) 30 10 0 0
TEMP (24H TREND) 50 (-12) 67 (-11) 54 67
RH % (24H TREND) 100 (+8) 70 (-2) 90 74
WIND 20FT/EARLY(MPH) N 7 NE 6 E 6 E 6
WIND 20FT/LATE(MPH) N 6 NE 6 LGT/VAR E 8 G17
PRECIP AMOUNT 0.18 0.09 0.00 0.47
PRECIP DURATION 8 4 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 3 PM CONTINUING
MIXING HGT(M-AGL/MSL) 750 730
MIXING HGT(FT-AGL/MSL) 2470 2400
TRANSPORT WND (MPH) E 13 SE 16
VENT RATE (KT-FT) 27170 33600
CATEGORY DAY 3 3
INVERSION 1AM 54F/4AM 1AM 58F/8AM
DISPERSION 3 3
MAX ADI EARLY 16 GEN POOR 24 FAIR 9 POOR 37 FAIR
MAX ADI LATE 9 POOR 37 FAIR 8 POOR 43 GEN GOOD
MAX LVORI EARLY 5 5 4 5
MAX LVORI LATE 7 4 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-210830-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 90 80 0 70
CHANCE OF THUNDER (%) 30 10 0 0
TEMP (24H TREND) 50 (-15) 67 (-10) 54 66
RH % (24H TREND) 100 (+8) 67 (-8) 87 72
WIND 20FT/EARLY(MPH) N 7 NE 6 E 5 E 7 G17
WIND 20FT/LATE(MPH) N 5 NE 6 LGT/VAR E 9 G18
PRECIP AMOUNT 0.20 0.10 0.00 0.44
PRECIP DURATION 8 3 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 3 PM CONTINUING
MIXING HGT(M-AGL/MSL) 770 680
MIXING HGT(FT-AGL/MSL) 2520 2230
TRANSPORT WND (MPH) E 13 SE 17
VENT RATE (KT-FT) 27720 33450
CATEGORY DAY 3 3
INVERSION 1AM 54F/4AM 8PM 58F/7AM
DISPERSION 3 3
MAX ADI EARLY 15 GEN POOR 24 FAIR 8 POOR 42 GEN GOOD
MAX ADI LATE 8 POOR 35 FAIR 8 POOR 46 GEN GOOD
MAX LVORI EARLY 4 5 4 4
MAX LVORI LATE 6 4 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-210830-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 90 80 0 70
CHANCE OF THUNDER (%) 30 10 0 0
TEMP (24H TREND) 50 (-13) 64 (-11) 52 63
RH % (24H TREND) 100 (+5) 68 (-7) 90 72
WIND 20FT/EARLY(MPH) N 5 LGT/VAR E 6 E 9 G19
WIND 20FT/LATE(MPH) LGT/VAR E 5 E 6 SE 9 G19
PRECIP AMOUNT 0.22 0.13 0.00 0.43
PRECIP DURATION 9 4 4
PRECIP BEGIN 6 PM CONTINUING 8 AM
PRECIP END CONTINUING 3 PM CONTINUING
MIXING HGT(M-AGL/MSL) 650 610
MIXING HGT(FT-AGL/MSL) 2140 2010
TRANSPORT WND (MPH) E 13 SE 21
VENT RATE (KT-FT) 23540 36180
CATEGORY DAY 2 3
INVERSION 1AM 53F/6AM 1AM 55F/4AM
DISPERSION 2 3
MAX ADI EARLY 8 POOR 18 GEN POOR 11 POOR 44 GEN GOOD
MAX ADI LATE 6 VERY POOR 32 FAIR 12 POOR 50 GEN GOOD
MAX LVORI EARLY 5 8 4 4
MAX LVORI LATE 8 5 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-210830-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 100 80 0 70
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 51 (-11) 65 (-12) 50 64
RH % (24H TREND) 100 (+5) 67 (-4) 93 71
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR E 5 E 8 G19
WIND 20FT/LATE(MPH) LGT/VAR E 5 E 5 SE 9 G20
PRECIP AMOUNT 0.23 0.15 0.00 0.37
PRECIP DURATION 8 5 4
PRECIP BEGIN 6 PM CONTINUING 6 AM
PRECIP END CONTINUING 4 PM CONTINUING
MIXING HGT(M-AGL/MSL) 610 610
MIXING HGT(FT-AGL/MSL) 2000 1990
TRANSPORT WND (MPH) E 14 SE 21
VENT RATE (KT-FT) 24000 35820
CATEGORY DAY 2 3
INVERSION 10PM 58F/10AM 11PM 54F/4AM
DISPERSION 2 3
MAX ADI EARLY 8 POOR 18 GEN POOR 10 POOR 43 GEN GOOD
MAX ADI LATE 4 VERY POOR 31 FAIR 12 POOR 47 GEN GOOD
MAX LVORI EARLY 6 8 4 4
MAX LVORI LATE 8 4 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-210830-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 90 20 70
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 52 (-9) 64 (-11) 49 62
RH % (24H TREND) 100 (+9) 69 (-1) 97 72
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR E 7 G18 E 10 G22
WIND 20FT/LATE(MPH) LGT/VAR E 5 E 8 G19 SE 10 G22
PRECIP AMOUNT 0.21 0.23 0.03 0.34
PRECIP DURATION 7 7 0 8
PRECIP BEGIN 6 PM CONTINUING 2 AM CONTINUING
PRECIP END CONTINUING 5 PM CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 520 550
MIXING HGT(FT-AGL/MSL) 1690 1800
TRANSPORT WND (MPH) E 15 SE 22
VENT RATE (KT-FT) 21970 34200
CATEGORY DAY 2 3
INVERSION 10PM 55F/9AM 10PM 54F/8AM
DISPERSION 2 3
MAX ADI EARLY 8 POOR 18 GEN POOR 13 GEN POOR 38 FAIR
MAX ADI LATE 4 VERY POOR 28 FAIR 14 GEN POOR 40 FAIR
MAX LVORI EARLY 6 7 4 5
MAX LVORI LATE 7 5 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-210830-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 100 30 70
CHANCE OF THUNDER (%) 40 20 0 0
TEMP (24H TREND) 55 (-7) 67 (-11) 51 64
RH % (24H TREND) 99 (+8) 64 (+3) 95 67
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR E 5 SE 6 G17
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR SE 9 G18
PRECIP AMOUNT 0.27 0.31 0.07 0.28
PRECIP DURATION 6 8 1 8
PRECIP BEGIN 6 PM CONTINUING 2 AM CONTINUING
PRECIP END CONTINUING 5 PM CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 490 530
MIXING HGT(FT-AGL/MSL) 1610 1740
TRANSPORT WND (MPH) E 12 SE 17
VENT RATE (KT-FT) 16100 26100
CATEGORY DAY 2 3
INVERSION 8PM 60F/11AM 9PM 55F/8AM
DISPERSION 2 3
MAX ADI EARLY 8 POOR 12 POOR 8 POOR 35 FAIR
MAX ADI LATE 3 VERY POOR 22 FAIR 8 POOR 37 FAIR
MAX LVORI EARLY 5 8 4 5
MAX LVORI LATE 8 5 6 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-210830-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1246 PM EDT WED MAY 20 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 100 50 80
CHANCE OF THUNDER (%) 40 20 0 0
TEMP (24H TREND) 52 (-7) 62 (-14) 46 59
RH % (24H TREND) 100 (+6) 77 (+16) 100 81
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR E 5 SE 7 G20
WIND 20FT/LATE(MPH) LGT/VAR E 5 SE 5 SE 8 G20
PRECIP AMOUNT 0.18 0.35 0.13 0.34
PRECIP DURATION 4 8 1 10
PRECIP BEGIN 6 PM CONTINUING 12 AM CONTINUING
PRECIP END CONTINUING 6 PM CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 360 450
MIXING HGT(FT-AGL/MSL) 1190 1490
TRANSPORT WND (MPH) E 13 SE 16
VENT RATE (KT-FT) 13090 20860
CATEGORY DAY 2 2
INVERSION 8PM 56F/9AM 4PM 51F/9AM
DISPERSION 2 2
MAX ADI EARLY 11 POOR 14 GEN POOR 10 POOR 32 FAIR
MAX ADI LATE 4 VERY POOR 18 GEN POOR 10 POOR 33 FAIR
MAX LVORI EARLY 6 8 6 6
MAX LVORI LATE 7 5 7 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
SATURDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS IN THE
LOWER 50S. HIGHS AROUND 70. EAST WINDS AROUND 10 MPH.
SUNDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS IN THE
UPPER 50S. HIGHS IN THE UPPER 70S. SOUTH WINDS 15 TO 20 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER 70S.
SOUTHWEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE
LOWER 60S. HIGHS AROUND 80. NORTHEAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE
LOWER 60S. HIGHS IN THE LOWER 80S. EAST WINDS AROUND 5 MPH.
LUPO
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page