820
FNUS51 KPBZ 281618
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1218 PM EDT THU MAY 28 2026
DISCUSSION
DAYTIME MINIMUM RELATIVE HUMIDITIES MAY DROP INTO THE LOW-40S TO
UPPER-30S EACH DAY OVER THE COMING WEEK, WITH DRY WEATHER FORECAST.
DAYTIME WIND GUSTS MAY MAXIMIZE AT 10MPH TO 20MPH EACH DAY. FIRE
CONCERNS REMAIN LOW FOR NOW GIVEN RECENT RAINS.
OHZ039-290815-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-9) 76 (+3) 53 71
RH % (24H TREND) 92 (-2) 40 (-7) 76 40
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 8
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1200 1500
MIXING HGT(FT-AGL/MSL) 3920 4920
TRANSPORT WND (MPH) W 13 NE 17
VENT RATE (KT-FT) 43120 73800
CATEGORY DAY 3 4
INVERSION 8PM 63F/10AM 8PM 55F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 15 GEN POOR 6 VERY POOR 60 GEN GOOD
MAX ADI LATE 3 VERY POOR 61 GOOD 8 POOR 92 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-290815-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-8) 76 (+4) 52 70
RH % (24H TREND) 89 (-3) 39 (-6) 73 40
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 9
WIND 20FT/LATE(MPH) LGT/VAR W 5 N 5 NE 9
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1220 1450
MIXING HGT(FT-AGL/MSL) 4000 4760
TRANSPORT WND (MPH) W 15 NE 17
VENT RATE (KT-FT) 52000 71400
CATEGORY DAY 4 4
INVERSION 8PM 57F/9AM 8PM 54F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 21 FAIR 7 POOR 61 GOOD
MAX ADI LATE 4 VERY POOR 69 GOOD 8 POOR 92 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 2 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-290815-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-8) 76 (+4) 51 70
RH % (24H TREND) 91 (+1) 37 (-7) 71 38
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 8
WIND 20FT/LATE(MPH) LGT/VAR W 6 N 5 NE 9
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1310 1450
MIXING HGT(FT-AGL/MSL) 4290 4760
TRANSPORT WND (MPH) W 16 NE 17
VENT RATE (KT-FT) 60060 71400
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 53F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 26 FAIR 12 POOR 60 GEN GOOD
MAX ADI LATE 3 VERY POOR 85 GOOD 9 POOR 93 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-290815-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-9) 77 (+4) 52 71
RH % (24H TREND) 93 (-5) 41 (-6) 79 41
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1200 1440
MIXING HGT(FT-AGL/MSL) 3950 4710
TRANSPORT WND (MPH) W 9 NE 17
VENT RATE (KT-FT) 31600 70650
CATEGORY DAY 3 4
INVERSION 8PM 63F/10AM 8PM 54F/7AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 15 GEN POOR 5 VERY POOR 60 GEN GOOD
MAX ADI LATE 4 VERY POOR 51 GEN GOOD 5 VERY POOR 93 GOOD
MAX LVORI EARLY 3 6 4 4
MAX LVORI LATE 6 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-290815-
HARRISON-
INCLUDING THE CITY OF CADIZ
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-9) 77 (+3) 52 71
RH % (24H TREND) 92 (-7) 39 (-5) 80 38
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 8
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1210 1520
MIXING HGT(FT-AGL/MSL) 3950 4980
TRANSPORT WND (MPH) W 13 NE 16
VENT RATE (KT-FT) 43450 69720
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 54F/7AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 16 GEN POOR 6 VERY POOR 57 GEN GOOD
MAX ADI LATE 4 VERY POOR 62 GOOD 8 POOR 92 GOOD
MAX LVORI EARLY 3 6 3 4
MAX LVORI LATE 6 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-290815-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-9) 76 (+3) 52 71
RH % (24H TREND) 89 (-2) 36 (-8) 75 38
WIND 20FT/EARLY(MPH) N 6 LGT/VAR LGT/VAR NE 8
WIND 20FT/LATE(MPH) LGT/VAR W 5 NW 5 NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1270 1530
MIXING HGT(FT-AGL/MSL) 4180 5000
TRANSPORT WND (MPH) W 15 NE 16
VENT RATE (KT-FT) 54340 70000
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 54F/7AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 20 GEN POOR 7 POOR 58 GEN GOOD
MAX ADI LATE 4 VERY POOR 72 GOOD 7 POOR 89 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 2 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-290815-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-9) 77 (+2) 52 72
RH % (24H TREND) 95 (-3) 39 (-7) 85 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1100 1440
MIXING HGT(FT-AGL/MSL) 3620 4730
TRANSPORT WND (MPH) W 8 NE 17
VENT RATE (KT-FT) 25340 70950
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 57F/8AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 14 GEN POOR 4 VERY POOR 58 GEN GOOD
MAX ADI LATE 4 VERY POOR 36 FAIR 5 VERY POOR 91 GOOD
MAX LVORI EARLY 3 6 4 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-290815-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-9) 78 (+3) 52 72
RH % (24H TREND) 94 (-5) 39 (-6) 84 38
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1170 1480
MIXING HGT(FT-AGL/MSL) 3830 4870
TRANSPORT WND (MPH) W 9 NE 16
VENT RATE (KT-FT) 30640 68180
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 55F/7AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 14 GEN POOR 5 VERY POOR 56 GEN GOOD
MAX ADI LATE 4 VERY POOR 48 GEN GOOD 5 VERY POOR 90 GOOD
MAX LVORI EARLY 3 6 4 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-290815-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-10) 77 (+2) 52 72
RH % (24H TREND) 93 (-6) 40 (-5) 84 39
WIND 20FT/EARLY(MPH) N 6 LGT/VAR LGT/VAR NE 8
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1190 1500
MIXING HGT(FT-AGL/MSL) 3910 4930
TRANSPORT WND (MPH) W 12 NE 16
VENT RATE (KT-FT) 39100 69020
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 56F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 13 GEN POOR 5 VERY POOR 58 GEN GOOD
MAX ADI LATE 4 VERY POOR 52 GEN GOOD 5 VERY POOR 88 GOOD
MAX LVORI EARLY 4 5 4 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-290815-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-9) 78 (+2) 51 73
RH % (24H TREND) 96 (-3) 38 (-7) 89 37
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1110 1420
MIXING HGT(FT-AGL/MSL) 3640 4650
TRANSPORT WND (MPH) W 8 NE 16
VENT RATE (KT-FT) 25480 65100
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 57F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 12 POOR 4 VERY POOR 56 GEN GOOD
MAX ADI LATE 4 VERY POOR 39 FAIR 5 VERY POOR 87 GOOD
MAX LVORI EARLY 4 6 4 5
MAX LVORI LATE 6 2 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-290815-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 48 (-10) 78 (+2) 52 73
RH % (24H TREND) 92 (-7) 38 (-6) 87 37
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1200 1410
MIXING HGT(FT-AGL/MSL) 3930 4620
TRANSPORT WND (MPH) W 10 NE 16
VENT RATE (KT-FT) 35370 64680
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 57F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 11 POOR 5 VERY POOR 56 GEN GOOD
MAX ADI LATE 4 VERY POOR 50 GEN GOOD 5 VERY POOR 89 GOOD
MAX LVORI EARLY 3 5 4 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-290815-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-8) 76 (+7) 48 70
RH % (24H TREND) 93 (0) 37 (-11) 69 41
WIND 20FT/EARLY(MPH) N 5 LGT/VAR W 5 NE 8
WIND 20FT/LATE(MPH) LGT/VAR W 8 N 7 NE 9
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1330 1680
MIXING HGT(FT-AGL/MSL) 4370 5520
TRANSPORT WND (MPH) W 17 NE 17
VENT RATE (KT-FT) 65550 82800
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 51F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 36 FAIR 11 POOR 63 GOOD
MAX ADI LATE 3 VERY POOR 88 GOOD 10 POOR 101 VERY GOOD
MAX LVORI EARLY 5 6 3 3
MAX LVORI LATE 7 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-290815-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 45 (-8) 75 (+6) 47 68
RH % (24H TREND) 92 (+5) 37 (-9) 70 40
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR W 5 NE 7
WIND 20FT/LATE(MPH) LGT/VAR W 7 N 6 NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1380 1830
MIXING HGT(FT-AGL/MSL) 4520 6000
TRANSPORT WND (MPH) W 20 NE 17
VENT RATE (KT-FT) 76840 90000
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 48F/7AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 45 GEN GOOD 12 POOR 72 GOOD
MAX ADI LATE 3 VERY POOR 102 VERY GOOD8 POOR 114 VERY GOOD
MAX LVORI EARLY 4 6 3 3
MAX LVORI LATE 7 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-290815-
FOREST-
INCLUDING THE CITY OF TIONESTA
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 44 (-8) 74 (+6) 45 67
RH % (24H TREND) 90 (+1) 33 (-10) 71 36
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR W 5 G18 N 6
WIND 20FT/LATE(MPH) LGT/VAR W 7 G18 N 5 NE 6
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1430 1810
MIXING HGT(FT-AGL/MSL) 4690 5950
TRANSPORT WND (MPH) W 21 NE 18
VENT RATE (KT-FT) 84420 95200
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 46F/7AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 49 GEN GOOD 14 GEN POOR 80 GOOD
MAX ADI LATE 3 VERY POOR 111 VERY GOOD8 POOR 121 VERY GOOD
MAX LVORI EARLY 4 5 2 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-290815-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-8) 77 (+6) 50 71
RH % (24H TREND) 93 (-2) 36 (-9) 70 38
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 7
WIND 20FT/LATE(MPH) LGT/VAR W 6 N 5 N 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1390 1600
MIXING HGT(FT-AGL/MSL) 4560 5260
TRANSPORT WND (MPH) W 17 NE 16
VENT RATE (KT-FT) 68400 73640
CATEGORY DAY 4 4
INVERSION 8PM 59F/9AM 8PM 52F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 30 FAIR 12 POOR 59 GEN GOOD
MAX ADI LATE 3 VERY POOR 93 GOOD 6 VERY POOR 98 GOOD
MAX LVORI EARLY 4 6 3 3
MAX LVORI LATE 7 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-290815-
BUTLER-
INCLUDING THE CITY OF BUTLER
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-8) 76 (+5) 49 70
RH % (24H TREND) 92 (+2) 40 (-7) 73 41
WIND 20FT/EARLY(MPH) N 5 LGT/VAR W 5 NE 7
WIND 20FT/LATE(MPH) LGT/VAR W 6 N 5 NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1420 1790
MIXING HGT(FT-AGL/MSL) 4650 5890
TRANSPORT WND (MPH) W 18 NE 16
VENT RATE (KT-FT) 74400 82460
CATEGORY DAY 4 4
INVERSION 8PM 59F/9AM 8PM 52F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 32 FAIR 12 POOR 58 GEN GOOD
MAX ADI LATE 3 VERY POOR 100 GOOD 8 POOR 103 VERY GOOD
MAX LVORI EARLY 4 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-290815-
CLARION-
INCLUDING THE CITY OF CLARION
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 45 (-9) 75 (+5) 47 69
RH % (24H TREND) 89 (+4) 36 (-8) 69 38
WIND 20FT/EARLY(MPH) N 5 LGT/VAR W 5 G17 N 7
WIND 20FT/LATE(MPH) LGT/VAR W 7 G17 N 5 NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1440 1890
MIXING HGT(FT-AGL/MSL) 4720 6200
TRANSPORT WND (MPH) NW 20 NE 17
VENT RATE (KT-FT) 80240 93000
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 48F/7AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 42 GEN GOOD 13 GEN POOR 78 GOOD
MAX ADI LATE 3 VERY POOR 110 VERY GOOD9 POOR 117 VERY GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-290815-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 45 (-9) 74 (+5) 46 67
RH % (24H TREND) 86 (+8) 35 (-7) 68 36
WIND 20FT/EARLY(MPH) N 5 G17 LGT/VAR W 7 G19 N 7
WIND 20FT/LATE(MPH) LGT/VAR W 8 G19 N 5 NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1470 1900
MIXING HGT(FT-AGL/MSL) 4810 6250
TRANSPORT WND (MPH) W 20 NE 17
VENT RATE (KT-FT) 81770 93750
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 48F/7AM
DISPERSION 4 4
MAX ADI EARLY 12 POOR 45 GEN GOOD 15 GEN POOR 81 GOOD
MAX ADI LATE 3 VERY POOR 105 VERY GOOD10 POOR 119 VERY GOOD
MAX LVORI EARLY 3 5 2 3
MAX LVORI LATE 5 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-290815-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 48 (-8) 77 (+5) 52 71
RH % (24H TREND) 88 (+2) 37 (-7) 70 37
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR W 5 LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1370 1610
MIXING HGT(FT-AGL/MSL) 4510 5270
TRANSPORT WND (MPH) W 16 NE 16
VENT RATE (KT-FT) 63140 73780
CATEGORY DAY 4 4
INVERSION 8PM 59F/9AM 8PM 54F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 26 FAIR 12 POOR 59 GEN GOOD
MAX ADI LATE 3 VERY POOR 92 GOOD 6 VERY POOR 95 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-290815-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 48 (-9) 77 (+4) 53 71
RH % (24H TREND) 88 (0) 38 (-7) 72 39
WIND 20FT/EARLY(MPH) N 7 G17 LGT/VAR W 6 NE 8
WIND 20FT/LATE(MPH) LGT/VAR W 6 NW 5 NE 9
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1440 1660
MIXING HGT(FT-AGL/MSL) 4730 5450
TRANSPORT WND (MPH) W 17 NE 16
VENT RATE (KT-FT) 70950 76300
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 54F/7AM
DISPERSION 4 4
MAX ADI EARLY 22 FAIR 22 FAIR 12 POOR 60 GEN GOOD
MAX ADI LATE 3 VERY POOR 92 GOOD 5 VERY POOR 99 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-290815-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-8) 76 (+4) 49 70
RH % (24H TREND) 91 (+4) 39 (-7) 74 40
WIND 20FT/EARLY(MPH) N 5 LGT/VAR W 5 N 7
WIND 20FT/LATE(MPH) LGT/VAR W 7 NW 5 NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1450 1850
MIXING HGT(FT-AGL/MSL) 4770 6070
TRANSPORT WND (MPH) W 20 NE 16
VENT RATE (KT-FT) 81090 84980
CATEGORY DAY 4 4
INVERSION 8PM 59F/9AM 8PM 50F/7AM
DISPERSION 4 4
MAX ADI EARLY 12 POOR 31 FAIR 12 POOR 73 GOOD
MAX ADI LATE 3 VERY POOR 108 VERY GOOD8 POOR 107 VERY GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-290815-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-9) 76 (+3) 52 70
RH % (24H TREND) 90 (+1) 41 (-6) 79 40
WIND 20FT/EARLY(MPH) N 6 LGT/VAR W 5 NE 8
WIND 20FT/LATE(MPH) LGT/VAR W 5 LGT/VAR NE 9
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1320 1530
MIXING HGT(FT-AGL/MSL) 4350 5020
TRANSPORT WND (MPH) W 15 NE 16
VENT RATE (KT-FT) 56550 70280
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 55F/8AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 16 GEN POOR 10 POOR 58 GEN GOOD
MAX ADI LATE 4 VERY POOR 73 GOOD 5 VERY POOR 92 GOOD
MAX LVORI EARLY 3 5 3 4
MAX LVORI LATE 6 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-290815-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-10) 76 (+3) 52 70
RH % (24H TREND) 90 (-8) 41 (-9) 83 44
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1270 1510
MIXING HGT(FT-AGL/MSL) 4180 4940
TRANSPORT WND (MPH) W 13 NE 16
VENT RATE (KT-FT) 45980 69160
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 56F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 15 GEN POOR 6 VERY POOR 61 GOOD
MAX ADI LATE 4 VERY POOR 68 GOOD 5 VERY POOR 91 GOOD
MAX LVORI EARLY 3 5 3 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-290815-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-10) 76 (+3) 51 70
RH % (24H TREND) 91 (-6) 41 (-6) 80 40
WIND 20FT/EARLY(MPH) N 6 G17 LGT/VAR W 5 N 7
WIND 20FT/LATE(MPH) LGT/VAR W 6 LGT/VAR N 9
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1450 1680
MIXING HGT(FT-AGL/MSL) 4760 5520
TRANSPORT WND (MPH) W 16 NE 16
VENT RATE (KT-FT) 66640 77280
CATEGORY DAY 4 4
INVERSION 8PM 59F/9AM 8PM 54F/8AM
DISPERSION 4 4
MAX ADI EARLY 22 FAIR 21 FAIR 10 POOR 57 GEN GOOD
MAX ADI LATE 3 VERY POOR 89 GOOD 5 VERY POOR 98 GOOD
MAX LVORI EARLY 3 6 3 4
MAX LVORI LATE 7 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-290815-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-10) 76 (+5) 51 71
RH % (24H TREND) 85 (-11) 38 (-7) 76 36
WIND 20FT/EARLY(MPH) N 5 G18 LGT/VAR W 6 G17 N 5
WIND 20FT/LATE(MPH) LGT/VAR W 6 G17 LGT/VAR N 6
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1370 1610
MIXING HGT(FT-AGL/MSL) 4500 5290
TRANSPORT WND (MPH) W 18 NE 16
VENT RATE (KT-FT) 72000 74060
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 54F/8AM
DISPERSION 4 4
MAX ADI EARLY 12 POOR 24 FAIR 12 POOR 56 GEN GOOD
MAX ADI LATE 3 VERY POOR 95 GOOD 5 VERY POOR 92 GOOD
MAX LVORI EARLY 3 5 3 3
MAX LVORI LATE 5 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-290815-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 47 (-10) 75 (+2) 51 70
RH % (24H TREND) 92 (-7) 43 (-6) 85 42
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR N 5
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1280 1500
MIXING HGT(FT-AGL/MSL) 4210 4930
TRANSPORT WND (MPH) W 15 NE 16
VENT RATE (KT-FT) 54730 69020
CATEGORY DAY 4 4
INVERSION 8PM 59F/9AM 7PM 56F/8AM
DISPERSION 4 4
MAX ADI EARLY 10 POOR 16 GEN POOR 6 VERY POOR 56 GEN GOOD
MAX ADI LATE 3 VERY POOR 72 GOOD 4 VERY POOR 88 GOOD
MAX LVORI EARLY 3 6 3 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-290815-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 45 (-11) 74 (+4) 50 69
RH % (24H TREND) 87 (-11) 40 (-8) 83 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 5
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1130 1490
MIXING HGT(FT-AGL/MSL) 3700 4880
TRANSPORT WND (MPH) W 16 NE 15
VENT RATE (KT-FT) 51800 63440
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 54F/8AM
DISPERSION 3 4
MAX ADI EARLY 9 POOR 19 GEN POOR 6 VERY POOR 54 GEN GOOD
MAX ADI LATE 3 VERY POOR 71 GOOD 5 VERY POOR 84 GOOD
MAX LVORI EARLY 3 5 3 4
MAX LVORI LATE 5 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-290815-
INDIANA-
INCLUDING THE CITY OF INDIANA
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 46 (-9) 76 (+5) 49 70
RH % (24H TREND) 90 (+3) 40 (-5) 75 39
WIND 20FT/EARLY(MPH) N 5 G17 LGT/VAR W 6 G18 N 6
WIND 20FT/LATE(MPH) LGT/VAR W 8 G18 LGT/VAR N 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1440 1850
MIXING HGT(FT-AGL/MSL) 4740 6080
TRANSPORT WND (MPH) W 21 NE 16
VENT RATE (KT-FT) 85320 85120
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 51F/7AM
DISPERSION 4 4
MAX ADI EARLY 12 POOR 32 FAIR 13 GEN POOR 72 GOOD
MAX ADI LATE 3 VERY POOR 95 GOOD 8 POOR 107 VERY GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-290815-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR MCLEAR PCLDY CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 46 (-9) 75 (+4) 50 70
RH % (24H TREND) 86 (-5) 38 (-6) 72 36
WIND 20FT/EARLY(MPH) N 5 G17 LGT/VAR W 6 G18 N 6
WIND 20FT/LATE(MPH) LGT/VAR W 8 G18 LGT/VAR N 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1400 1760
MIXING HGT(FT-AGL/MSL) 4600 5760
TRANSPORT WND (MPH) W 20 NE 16
VENT RATE (KT-FT) 78200 80640
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 52F/7AM
DISPERSION 4 4
MAX ADI EARLY 12 POOR 31 FAIR 13 GEN POOR 64 GOOD
MAX ADI LATE 3 VERY POOR 103 VERY GOOD8 POOR 102 VERY GOOD
MAX LVORI EARLY 3 5 3 3
MAX LVORI LATE 5 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-290815-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 49 (-7) 77 (+4) 53 71
RH % (24H TREND) 86 (-5) 37 (-6) 70 38
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 7
WIND 20FT/LATE(MPH) LGT/VAR W 5 LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1320 1520
MIXING HGT(FT-AGL/MSL) 4330 4970
TRANSPORT WND (MPH) W 16 NE 16
VENT RATE (KT-FT) 60620 69580
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 54F/7AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 22 FAIR 11 POOR 60 GEN GOOD
MAX ADI LATE 3 VERY POOR 82 GOOD 5 VERY POOR 92 GOOD
MAX LVORI EARLY 3 6 3 3
MAX LVORI LATE 6 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-290815-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 49 (-8) 77 (+3) 53 71
RH % (24H TREND) 85 (-5) 37 (-7) 74 37
WIND 20FT/EARLY(MPH) N 6 LGT/VAR LGT/VAR NE 7
WIND 20FT/LATE(MPH) LGT/VAR W 5 LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1300 1530
MIXING HGT(FT-AGL/MSL) 4260 5030
TRANSPORT WND (MPH) W 15 NE 16
VENT RATE (KT-FT) 55380 70420
CATEGORY DAY 4 4
INVERSION 8PM 58F/9AM 8PM 54F/7AM
DISPERSION 4 4
MAX ADI EARLY 11 POOR 16 GEN POOR 8 POOR 54 GEN GOOD
MAX ADI LATE 4 VERY POOR 75 GOOD 5 VERY POOR 91 GOOD
MAX LVORI EARLY 3 5 3 3
MAX LVORI LATE 5 2 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-290815-
OHIO-
INCLUDING THE CITY OF WHEELING
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
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) 48 (-9) 76 (+2) 53 71
RH % (24H TREND) 89 (-3) 40 (-6) 79 39
WIND 20FT/EARLY(MPH) N 6 LGT/VAR LGT/VAR NE 7
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1210 1510
MIXING HGT(FT-AGL/MSL) 3990 4970
TRANSPORT WND (MPH) W 13 NE 16
VENT RATE (KT-FT) 43890 69580
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 56F/8AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 16 GEN POOR 6 VERY POOR 57 GEN GOOD
MAX ADI LATE 4 VERY POOR 64 GOOD 8 POOR 92 GOOD
MAX LVORI EARLY 3 5 3 4
MAX LVORI LATE 6 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-290815-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 48 (-11) 77 (+3) 53 72
RH % (24H TREND) 88 (-8) 40 (-8) 81 40
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1210 1500
MIXING HGT(FT-AGL/MSL) 3980 4920
TRANSPORT WND (MPH) W 12 NE 16
VENT RATE (KT-FT) 39800 68880
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 57F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 12 POOR 5 VERY POOR 57 GEN GOOD
MAX ADI LATE 4 VERY POOR 58 GEN GOOD 5 VERY POOR 91 GOOD
MAX LVORI EARLY 3 5 3 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-290815-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 48 (-11) 76 (+2) 53 72
RH % (24H TREND) 89 (-11) 41 (-8) 85 39
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR NE 5
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1220 1470
MIXING HGT(FT-AGL/MSL) 4010 4830
TRANSPORT WND (MPH) W 10 NE 16
VENT RATE (KT-FT) 36090 67620
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 57F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 14 GEN POOR 5 VERY POOR 57 GEN GOOD
MAX ADI LATE 4 VERY POOR 52 GEN GOOD 4 VERY POOR 88 GOOD
MAX LVORI EARLY 3 5 3 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-290815-
MARION-
INCLUDING THE CITY OF FAIRMONT
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-11) 76 (+2) 51 70
RH % (24H TREND) 95 (-5) 41 (-8) 90 42
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1280 1390
MIXING HGT(FT-AGL/MSL) 4210 4570
TRANSPORT WND (MPH) W 10 NE 16
VENT RATE (KT-FT) 37890 63980
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 56F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 15 GEN POOR 5 VERY POOR 58 GEN GOOD
MAX ADI LATE 4 VERY POOR 59 GEN GOOD 4 VERY POOR 83 GOOD
MAX LVORI EARLY 4 6 4 5
MAX LVORI LATE 7 2 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-290815-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 47 (-11) 76 (+2) 51 70
RH % (24H TREND) 93 (-6) 41 (-8) 86 43
WIND 20FT/EARLY(MPH) N 5 LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 7
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1320 1440
MIXING HGT(FT-AGL/MSL) 4340 4720
TRANSPORT WND (MPH) W 12 NE 16
VENT RATE (KT-FT) 43400 66080
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 57F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 15 GEN POOR 5 VERY POOR 59 GEN GOOD
MAX ADI LATE 3 VERY POOR 64 GOOD 4 VERY POOR 86 GOOD
MAX LVORI EARLY 3 6 3 5
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-290815-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 46 (-11) 73 (+2) 50 69
RH % (24H TREND) 92 (-8) 41 (-8) 87 41
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 6
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1200 1460
MIXING HGT(FT-AGL/MSL) 3930 4800
TRANSPORT WND (MPH) W 13 N 14
VENT RATE (KT-FT) 43230 57600
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 55F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 15 GEN POOR 6 VERY POOR 51 GEN GOOD
MAX ADI LATE 3 VERY POOR 68 GOOD 4 VERY POOR 77 GOOD
MAX LVORI EARLY 4 6 3 5
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-290815-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 46 (-12) 74 (+2) 50 71
RH % (24H TREND) 92 (-8) 38 (-10) 87 37
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 5
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1180 1550
MIXING HGT(FT-AGL/MSL) 3870 5090
TRANSPORT WND (MPH) W 14 N 14
VENT RATE (KT-FT) 46440 61080
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 56F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 15 GEN POOR 6 VERY POOR 58 GEN GOOD
MAX ADI LATE 3 VERY POOR 69 GOOD 4 VERY POOR 79 GOOD
MAX LVORI EARLY 4 6 3 5
MAX LVORI LATE 7 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-290815-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 45 (-12) 73 (+3) 50 70
RH % (24H TREND) 91 (-9) 39 (-12) 85 37
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 5
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1120 1630
MIXING HGT(FT-AGL/MSL) 3680 5340
TRANSPORT WND (MPH) W 15 N 13
VENT RATE (KT-FT) 47840 58740
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 55F/8AM
DISPERSION 3 4
MAX ADI EARLY 11 POOR 18 GEN POOR 7 POOR 56 GEN GOOD
MAX ADI LATE 3 VERY POOR 70 GOOD 5 VERY POOR 78 GOOD
MAX LVORI EARLY 4 6 3 4
MAX LVORI LATE 6 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-290815-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 46 (-12) 75 (+3) 50 72
RH % (24H TREND) 92 (-8) 35 (-11) 86 34
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR N 5
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1110 1620
MIXING HGT(FT-AGL/MSL) 3650 5310
TRANSPORT WND (MPH) W 14 N 13
VENT RATE (KT-FT) 43800 58410
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 55F/8AM
DISPERSION 3 4
MAX ADI EARLY 10 POOR 16 GEN POOR 6 VERY POOR 55 GEN GOOD
MAX ADI LATE 3 VERY POOR 65 GOOD 4 VERY POOR 75 GOOD
MAX LVORI EARLY 4 6 3 5
MAX LVORI LATE 7 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-290815-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1218 PM EDT THU MAY 28 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER CLEAR CLEAR PCLDY MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 0 0 0 0
TEMP (24H TREND) 43 (-13) 72 (+4) 47 69
RH % (24H TREND) 91 (-9) 36 (-15) 85 36
WIND 20FT/EARLY(MPH) NW 5 G22 LGT/VAR W 5 G17 LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR W 5 LGT/VAR N 5
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1050 1680
MIXING HGT(FT-AGL/MSL) 3430 5500
TRANSPORT WND (MPH) W 16 N 13
VENT RATE (KT-FT) 48020 60500
CATEGORY DAY 3 4
INVERSION 8PM 56F/9AM 8PM 54F/8AM
DISPERSION 3 4
MAX ADI EARLY 13 GEN POOR 21 FAIR 10 POOR 61 GOOD
MAX ADI LATE 4 VERY POOR 67 GOOD 8 POOR 81 GOOD
MAX LVORI EARLY 5 6 3 4
MAX LVORI LATE 6 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. NORTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID
70S. LIGHT WINDS.
TUESDAY
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 70S.
NORTH WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
LOWER 70S. NORTH WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE
UPPER 70S. SOUTHWEST WINDS AROUND 5 MPH.
MILCAREK
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