982
FNUS51 KPBZ 170522
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
122 AM EDT SUN MAY 17 2026
DISCUSSION
RELATIVE HUMIDITIES ARE EXPECTED TO REMAIN GREATER THAN 45% FOR
MUCH OF THE WEEK, SAVE SOME READINGS IN THE 30S MONDAY AND TUESDAY
AFTERNOON. LIGHT WIND TODAY WILL PICK UP TO AROUND THE 10 TO 15
MPH RANGE BY MONDAY AFTERNOON. OVERALL FIRE CONCERNS REMAIN LOW.
OHZ039-172015-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (+13) 64 (+7) 89
RH % (24H TREND) 43 (-13) 75 (-20) 36
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 10 G19
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 0
PRECIP BEGIN 7 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1500 2330
MIXING HGT(FT-AGL/MSL)4910 7650
TRANSPORT WND (MPH) SW 13 SW 23
VENT RATE (KT-FT) 54010 153000
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 36 FAIR 5 VERY POOR 73 GOOD
MAX ADI LATE 70 GOOD 5 VERY POOR 106 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-172015-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+13) 63 (+7) 89
RH % (24H TREND) 46 (-9) 75 (-21) 37
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 10 G18
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 0
PRECIP BEGIN 1 PM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1380 2230
MIXING HGT(FT-AGL/MSL)4530 7320
TRANSPORT WND (MPH) SW 13 SW 23
VENT RATE (KT-FT) 49830 146400
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 37 FAIR 4 VERY POOR 69 GOOD
MAX ADI LATE 64 GOOD 5 VERY POOR 108 VERY GOOD
MAX LVORI EARLY 5 3 4
MAX LVORI LATE 1 3 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-172015-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 82 (+11) 63 (+8) 89
RH % (24H TREND) 48 (-6) 79 (-17) 38
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 10 G18
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1300 2030
MIXING HGT(FT-AGL/MSL)4270 6670
TRANSPORT WND (MPH) SW 13 SW 22
VENT RATE (KT-FT) 46970 126730
CATEGORY DAY 3 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 3 5
MAX ADI EARLY 38 FAIR 4 VERY POOR 67 GOOD
MAX ADI LATE 61 GOOD 4 VERY POOR 98 GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-172015-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 84 (+13) 63 (+7) 89
RH % (24H TREND) 43 (-15) 78 (-20) 37
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G18
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 0
PRECIP BEGIN 7 AM
PRECIP END 10 AM
MIXING HGT(M-AGL/MSL) 1530 2190
MIXING HGT(FT-AGL/MSL)5000 7180
TRANSPORT WND (MPH) SW 14 SW 22
VENT RATE (KT-FT) 60000 136420
CATEGORY DAY 4 5
INVERSION 65F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 33 FAIR 6 VERY POOR 82 GOOD
MAX ADI LATE 77 GOOD 5 VERY POOR 118 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-172015-
HARRISON-
INCLUDING THE CITY OF CADIZ
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 84 (+13) 63 (+8) 89
RH % (24H TREND) 43 (-10) 77 (-22) 35
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G19
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 0
PRECIP BEGIN 7 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1430 2400
MIXING HGT(FT-AGL/MSL)4680 7870
TRANSPORT WND (MPH) SW 13 SW 23
VENT RATE (KT-FT) 51480 157400
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 33 FAIR 5 VERY POOR 65 GOOD
MAX ADI LATE 68 GOOD 5 VERY POOR 115 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-172015-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+12) 63 (+7) 89
RH % (24H TREND) 45 (-8) 78 (-20) 35
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G18
PRECIP AMOUNT 0.02 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 7 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1340 2310
MIXING HGT(FT-AGL/MSL)4390 7570
TRANSPORT WND (MPH) SW 13 SW 22
VENT RATE (KT-FT) 48290 143830
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 35 FAIR 4 VERY POOR 58 GEN GOOD
MAX ADI LATE 67 GOOD 4 VERY POOR 107 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-172015-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 86 (+15) 63 (+7) 90
RH % (24H TREND) 38 (-20) 78 (-21) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G19
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 10 AM
MIXING HGT(M-AGL/MSL) 1560 2370
MIXING HGT(FT-AGL/MSL)5100 7770
TRANSPORT WND (MPH) SW 13 SW 21
VENT RATE (KT-FT) 56100 139860
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 33 FAIR 6 VERY POOR 80 GOOD
MAX ADI LATE 75 GOOD 5 VERY POOR 128 VERY GOOD
MAX LVORI EARLY 7 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-172015-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 86 (+14) 63 (+8) 90
RH % (24H TREND) 39 (-14) 78 (-20) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 9 G18
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1550 2500
MIXING HGT(FT-AGL/MSL)5070 8200
TRANSPORT WND (MPH) SW 13 SW 22
VENT RATE (KT-FT) 55770 155800
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 30 FAIR 5 VERY POOR 72 GOOD
MAX ADI LATE 75 GOOD 5 VERY POOR 178 VERY GOOD
MAX LVORI EARLY 7 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-172015-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 84 (+12) 62 (+7) 90
RH % (24H TREND) 41 (-11) 81 (-17) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G18
PRECIP AMOUNT 0.03 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1470 2450
MIXING HGT(FT-AGL/MSL)4810 8040
TRANSPORT WND (MPH) W 14 S 22
VENT RATE (KT-FT) 57720 152760
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 72F/9AM
DISPERSION 4 5
MAX ADI EARLY 30 FAIR 5 VERY POOR 63 GOOD
MAX ADI LATE 76 GOOD 5 VERY POOR 116 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-172015-
NOBLE-
INCLUDING THE CITY OF CALDWELL
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 86 (+14) 62 (+8) 90
RH % (24H TREND) 36 (-20) 82 (-18) 34
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8 G18
PRECIP AMOUNT 0.02 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 10 AM
MIXING HGT(M-AGL/MSL) 1590 2800
MIXING HGT(FT-AGL/MSL)5220 9200
TRANSPORT WND (MPH) SW 13 SW 21
VENT RATE (KT-FT) 57420 165600
CATEGORY DAY 4 5
INVERSION 69F/10AM 8PM 71F/9AM
DISPERSION 4 5
MAX ADI EARLY 24 FAIR 5 VERY POOR 71 GOOD
MAX ADI LATE 78 GOOD 4 VERY POOR 190 VERY GOOD
MAX LVORI EARLY 8 3 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-172015-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (+14) 63 (+8) 91
RH % (24H TREND) 38 (-16) 80 (-18) 34
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 7 G18
PRECIP AMOUNT 0.03 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 9 AM
MIXING HGT(M-AGL/MSL) 1510 2840
MIXING HGT(FT-AGL/MSL)4940 9310
TRANSPORT WND (MPH) W 13 S 21
VENT RATE (KT-FT) 54340 167580
CATEGORY DAY 4 5
INVERSION 70F/10AM 8PM 72F/9AM
DISPERSION 4 5
MAX ADI EARLY 26 FAIR 5 VERY POOR 69 GOOD
MAX ADI LATE 80 GOOD 4 VERY POOR 187 VERY GOOD
MAX LVORI EARLY 7 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-172015-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 80 (+10) 62 (+7) 88
RH % (24H TREND) 54 (-1) 87 (-11) 41
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 10 G19
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1130 1530
MIXING HGT(FT-AGL/MSL)3710 5030
TRANSPORT WND (MPH) SW 12 SW 21
VENT RATE (KT-FT) 37100 90540
CATEGORY DAY 3 4
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 3 4
MAX ADI EARLY 33 FAIR 6 VERY POOR 49 GEN GOOD
MAX ADI LATE 51 GEN GOOD 6 VERY POOR 85 GOOD
MAX LVORI EARLY 6 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-172015-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 80 (+8) 61 (+6) 88
RH % (24H TREND) 53 (+3) 88 (-10) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8 G17
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1040 1940
MIXING HGT(FT-AGL/MSL)3400 6380
TRANSPORT WND (MPH) SW 13 SW 22
VENT RATE (KT-FT) 37400 121220
CATEGORY DAY 3 5
INVERSION 65F/9AM 8PM 71F/9AM
DISPERSION 3 5
MAX ADI EARLY 31 FAIR 6 VERY POOR 58 GEN GOOD
MAX ADI LATE 45 GEN GOOD 5 VERY POOR 147 VERY GOOD
MAX LVORI EARLY 6 5 5
MAX LVORI LATE 3 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-172015-
FOREST-
INCLUDING THE CITY OF TIONESTA
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 79 (+6) 60 (+7) 88
RH % (24H TREND) 49 (+5) 89 (-9) 38
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 7 G17
PRECIP AMOUNT 0.02 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 970 2080
MIXING HGT(FT-AGL/MSL)3190 6820
TRANSPORT WND (MPH) SW 13 SW 21
VENT RATE (KT-FT) 35090 122760
CATEGORY DAY 3 5
INVERSION 65F/9AM 7PM 71F/9AM
DISPERSION 3 5
MAX ADI EARLY 24 FAIR 5 VERY POOR 71 GOOD
MAX ADI LATE 49 GEN GOOD 4 VERY POOR 153 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-172015-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 82 (+10) 62 (+7) 89
RH % (24H TREND) 50 (-4) 86 (-13) 38
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 9
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1160 1670
MIXING HGT(FT-AGL/MSL)3790 5470
TRANSPORT WND (MPH) SW 12 S 21
VENT RATE (KT-FT) 37900 98460
CATEGORY DAY 3 4
INVERSION 67F/9AM 7PM 73F/9AM
DISPERSION 3 4
MAX ADI EARLY 31 FAIR 5 VERY POOR 48 GEN GOOD
MAX ADI LATE 51 GEN GOOD 4 VERY POOR 112 VERY GOOD
MAX LVORI EARLY 6 5 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-172015-
BUTLER-
INCLUDING THE CITY OF BUTLER
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 40 0 0
TEMP (24H TREND) 81 (+9) 61 (+7) 89
RH % (24H TREND) 54 (-2) 89 (-10) 40
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1180 2040
MIXING HGT(FT-AGL/MSL)3880 6690
TRANSPORT WND (MPH) SW 12 SW 21
VENT RATE (KT-FT) 38800 120420
CATEGORY DAY 3 5
INVERSION 66F/9AM 8PM 72F/9AM
DISPERSION 3 5
MAX ADI EARLY 33 FAIR 5 VERY POOR 47 GEN GOOD
MAX ADI LATE 54 GEN GOOD 4 VERY POOR 137 VERY GOOD
MAX LVORI EARLY 6 5 5
MAX LVORI LATE 3 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-172015-
CLARION-
INCLUDING THE CITY OF CLARION
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 30 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 79 (+8) 61 (+7) 88
RH % (24H TREND) 51 (+4) 87 (-11) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8 G17
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1 0
PRECIP BEGIN 1 PM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 1000 2050
MIXING HGT(FT-AGL/MSL)3290 6710
TRANSPORT WND (MPH) SW 12 SW 20
VENT RATE (KT-FT) 32900 114070
CATEGORY DAY 3 5
INVERSION 65F/9AM 8PM 76F/10AM
DISPERSION 3 5
MAX ADI EARLY 31 FAIR 5 VERY POOR 47 GEN GOOD
MAX ADI LATE 47 GEN GOOD 4 VERY POOR 133 VERY GOOD
MAX LVORI EARLY 6 5 4
MAX LVORI LATE 3 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-172015-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 20 0
CHANCE OF THUNDER (%) 30 20 0
TEMP (24H TREND) 79 (+7) 61 (+7) 87
RH % (24H TREND) 50 (+7) 86 (-11) 38
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8
PRECIP AMOUNT 0.01 0.01 0.00
PRECIP DURATION 1 0
PRECIP BEGIN 1 PM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 1000 1890
MIXING HGT(FT-AGL/MSL)3270 6210
TRANSPORT WND (MPH) SW 13 SW 18
VENT RATE (KT-FT) 35970 99360
CATEGORY DAY 3 4
INVERSION 65F/9AM 7PM 72F/9AM
DISPERSION 3 4
MAX ADI EARLY 30 FAIR 7 POOR 57 GEN GOOD
MAX ADI LATE 51 GEN GOOD 4 VERY POOR 120 VERY GOOD
MAX LVORI EARLY 6 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-172015-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 82 (+9) 63 (+7) 90
RH % (24H TREND) 48 (-5) 82 (-12) 36
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8 G17
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1260 2190
MIXING HGT(FT-AGL/MSL)4140 7180
TRANSPORT WND (MPH) SW 13 SW 21
VENT RATE (KT-FT) 45540 129240
CATEGORY DAY 3 5
INVERSION 67F/9AM 8PM 73F/9AM
DISPERSION 3 5
MAX ADI EARLY 34 FAIR 4 VERY POOR 53 GEN GOOD
MAX ADI LATE 62 GOOD 4 VERY POOR 148 VERY GOOD
MAX LVORI EARLY 6 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-172015-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+9) 63 (+7) 90
RH % (24H TREND) 48 (-5) 86 (-10) 36
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1310 2300
MIXING HGT(FT-AGL/MSL)4300 7540
TRANSPORT WND (MPH) SW 13 SW 18
VENT RATE (KT-FT) 47300 120640
CATEGORY DAY 3 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 3 5
MAX ADI EARLY 39 FAIR 5 VERY POOR 46 GEN GOOD
MAX ADI LATE 62 GOOD 3 VERY POOR 95 GOOD
MAX LVORI EARLY 6 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-172015-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 40 0 0
TEMP (24H TREND) 80 (+7) 61 (+7) 89
RH % (24H TREND) 53 (+2) 89 (-10) 40
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1100 1910
MIXING HGT(FT-AGL/MSL)3590 6280
TRANSPORT WND (MPH) SW 13 SW 18
VENT RATE (KT-FT) 39490 100480
CATEGORY DAY 3 4
INVERSION 66F/9AM 7PM 72F/9AM
DISPERSION 3 4
MAX ADI EARLY 35 FAIR 5 VERY POOR 44 GEN GOOD
MAX ADI LATE 55 GEN GOOD 3 VERY POOR 119 VERY GOOD
MAX LVORI EARLY 7 5 4
MAX LVORI LATE 3 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-172015-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+10) 61 (+6) 90
RH % (24H TREND) 47 (-6) 84 (-13) 36
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G17
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1340 2310
MIXING HGT(FT-AGL/MSL)4410 7570
TRANSPORT WND (MPH) W 14 S 18
VENT RATE (KT-FT) 52920 121120
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 35 FAIR 5 VERY POOR 53 GEN GOOD
MAX ADI LATE 68 GOOD 4 VERY POOR 109 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-172015-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 84 (+10) 63 (+9) 90
RH % (24H TREND) 45 (-9) 82 (-14) 36
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 7
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1370 2700
MIXING HGT(FT-AGL/MSL)4510 8870
TRANSPORT WND (MPH) W 14 SW 20
VENT RATE (KT-FT) 54120 150790
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 30 FAIR 5 VERY POOR 58 GEN GOOD
MAX ADI LATE 77 GOOD 4 VERY POOR 164 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-172015-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 82 (+8) 62 (+8) 90
RH % (24H TREND) 51 (+1) 88 (-11) 39
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8
PRECIP AMOUNT 0.03 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 7 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1150 1890
MIXING HGT(FT-AGL/MSL)3770 6210
TRANSPORT WND (MPH) SW 12 SW 17
VENT RATE (KT-FT) 37700 93150
CATEGORY DAY 3 4
INVERSION 66F/9AM 7PM 73F/9AM
DISPERSION 3 4
MAX ADI EARLY 38 FAIR 5 VERY POOR 40 FAIR
MAX ADI LATE 51 GEN GOOD 3 VERY POOR 102 VERY GOOD
MAX LVORI EARLY 6 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-172015-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 81 (+7) 63 (+8) 90
RH % (24H TREND) 45 (+2) 80 (-15) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 6
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 11 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1130 2010
MIXING HGT(FT-AGL/MSL)3710 6610
TRANSPORT WND (MPH) SW 13 SW 17
VENT RATE (KT-FT) 40810 99150
CATEGORY DAY 3 5
INVERSION 65F/9AM 7PM 74F/9AM
DISPERSION 3 5
MAX ADI EARLY 38 FAIR 5 VERY POOR 55 GEN GOOD
MAX ADI LATE 57 GEN GOOD 4 VERY POOR 116 VERY GOOD
MAX LVORI EARLY 5 3 3
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-172015-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+8) 61 (+6) 90
RH % (24H TREND) 48 (-3) 85 (-12) 39
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 7
PRECIP AMOUNT 0.14 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1340 2250
MIXING HGT(FT-AGL/MSL)4410 7390
TRANSPORT WND (MPH) SW 13 S 17
VENT RATE (KT-FT) 48510 110850
CATEGORY DAY 4 5
INVERSION 66F/9AM 7PM 74F/9AM
DISPERSION 4 5
MAX ADI EARLY 32 FAIR 4 VERY POOR 48 GEN GOOD
MAX ADI LATE 68 GOOD 3 VERY POOR 133 VERY GOOD
MAX LVORI EARLY 6 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-172015-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 81 (+9) 61 (+7) 88
RH % (24H TREND) 47 (-1) 79 (-16) 38
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 5
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1270 2240
MIXING HGT(FT-AGL/MSL)4170 7360
TRANSPORT WND (MPH) W 14 S 18
VENT RATE (KT-FT) 50040 117760
CATEGORY DAY 3 5
INVERSION 65F/9AM 7PM 74F/9AM
DISPERSION 3 5
MAX ADI EARLY 32 FAIR 5 VERY POOR 57 GEN GOOD
MAX ADI LATE 71 GOOD 3 VERY POOR 145 VERY GOOD
MAX LVORI EARLY 6 3 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-172015-
INDIANA-
INCLUDING THE CITY OF INDIANA
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 81 (+8) 62 (+8) 89
RH % (24H TREND) 50 (+4) 86 (-10) 37
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1070 1820
MIXING HGT(FT-AGL/MSL)3520 5970
TRANSPORT WND (MPH) SW 13 S 17
VENT RATE (KT-FT) 38720 89550
CATEGORY DAY 3 4
INVERSION 65F/9AM 7PM 73F/9AM
DISPERSION 3 4
MAX ADI EARLY 37 FAIR 6 VERY POOR 43 GEN GOOD
MAX ADI LATE 52 GEN GOOD 4 VERY POOR 111 VERY GOOD
MAX LVORI EARLY 6 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-172015-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 30 0 0
TEMP (24H TREND) 80 (+7) 63 (+9) 88
RH % (24H TREND) 48 (+4) 82 (-13) 36
WIND 20FT/EARLY(MPH) SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 7
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1030 1890
MIXING HGT(FT-AGL/MSL)3360 6210
TRANSPORT WND (MPH) W 13 SW 16
VENT RATE (KT-FT) 36960 86940
CATEGORY DAY 3 4
INVERSION 65F/9AM 7PM 74F/9AM
DISPERSION 3 4
MAX ADI EARLY 37 FAIR 6 VERY POOR 47 GEN GOOD
MAX ADI LATE 51 GEN GOOD 4 VERY POOR 107 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-172015-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+11) 64 (+8) 90
RH % (24H TREND) 46 (-6) 78 (-18) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 9 G17
PRECIP AMOUNT 0.01 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 7 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1300 2270
MIXING HGT(FT-AGL/MSL)4270 7440
TRANSPORT WND (MPH) SW 13 SW 22
VENT RATE (KT-FT) 46970 141360
CATEGORY DAY 3 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 3 5
MAX ADI EARLY 35 FAIR 4 VERY POOR 56 GEN GOOD
MAX ADI LATE 67 GOOD 4 VERY POOR 141 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-172015-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+11) 64 (+8) 89
RH % (24H TREND) 45 (-7) 76 (-19) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G17
PRECIP AMOUNT 0.05 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 7 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1310 2180
MIXING HGT(FT-AGL/MSL)4310 7160
TRANSPORT WND (MPH) W 14 S 21
VENT RATE (KT-FT) 51720 128880
CATEGORY DAY 3 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 3 5
MAX ADI EARLY 38 FAIR 5 VERY POOR 53 GEN GOOD
MAX ADI LATE 69 GOOD 4 VERY POOR 121 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-172015-
OHIO-
INCLUDING THE CITY OF WHEELING
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 20 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+11) 63 (+7) 89
RH % (24H TREND) 44 (-9) 78 (-20) 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 6
WIND 20FT/LATE(MPH) SW 6 LGT/VAR SW 9 G17
PRECIP AMOUNT 0.05 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1410 2390
MIXING HGT(FT-AGL/MSL)4620 7860
TRANSPORT WND (MPH) W 14 S 20
VENT RATE (KT-FT) 55440 133620
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 37 FAIR 5 VERY POOR 56 GEN GOOD
MAX ADI LATE 74 GOOD 4 VERY POOR 159 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-172015-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 30 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+13) 64 (+7) 90
RH % (24H TREND) 43 (-10) 76 (-19) 36
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR S 5
WIND 20FT/LATE(MPH) SW 5 LGT/VAR SW 8
PRECIP AMOUNT 0.09 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 10 AM
MIXING HGT(M-AGL/MSL) 1410 2800
MIXING HGT(FT-AGL/MSL)4610 9190
TRANSPORT WND (MPH) W 14 SW 20
VENT RATE (KT-FT) 55320 156230
CATEGORY DAY 4 5
INVERSION 66F/9AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 27 FAIR 5 VERY POOR 61 GOOD
MAX ADI LATE 75 GOOD 4 VERY POOR 176 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-172015-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+12) 64 (+8) 90
RH % (24H TREND) 41 (-16) 77 (-19) 34
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 7
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 9 AM
MIXING HGT(M-AGL/MSL) 1370 2880
MIXING HGT(FT-AGL/MSL)4500 9450
TRANSPORT WND (MPH) W 13 SW 21
VENT RATE (KT-FT) 49500 170100
CATEGORY DAY 4 5
INVERSION 69F/10AM 8PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 25 FAIR 5 VERY POOR 62 GOOD
MAX ADI LATE 74 GOOD 4 VERY POOR 183 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-172015-
MARION-
INCLUDING THE CITY OF FAIRMONT
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+11) 62 (+9) 90
RH % (24H TREND) 45 (-11) 84 (-15) 37
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 6
PRECIP AMOUNT 0.06 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1420 2600
MIXING HGT(FT-AGL/MSL)4650 8540
TRANSPORT WND (MPH) W 13 SW 20
VENT RATE (KT-FT) 51150 145180
CATEGORY DAY 4 5
INVERSION 69F/10AM 8PM 72F/9AM
DISPERSION 4 5
MAX ADI EARLY 28 FAIR 5 VERY POOR 57 GEN GOOD
MAX ADI LATE 76 GOOD 3 VERY POOR 167 VERY GOOD
MAX LVORI EARLY 8 3 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-172015-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 84 (+10) 63 (+7) 90
RH % (24H TREND) 45 (-9) 80 (-16) 36
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 6
PRECIP AMOUNT 0.06 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1350 2560
MIXING HGT(FT-AGL/MSL)4410 8400
TRANSPORT WND (MPH) W 14 SW 20
VENT RATE (KT-FT) 52920 142800
CATEGORY DAY 4 5
INVERSION 66F/9AM 7PM 74F/9AM
DISPERSION 4 5
MAX ADI EARLY 26 FAIR 5 VERY POOR 54 GEN GOOD
MAX ADI LATE 75 GOOD 3 VERY POOR 157 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-172015-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 82 (+10) 62 (+8) 88
RH % (24H TREND) 47 (-6) 79 (-18) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 5
PRECIP AMOUNT 0.07 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1340 2270
MIXING HGT(FT-AGL/MSL)4410 7460
TRANSPORT WND (MPH) W 14 S 17
VENT RATE (KT-FT) 52920 111900
CATEGORY DAY 4 5
INVERSION 65F/9AM 7PM 73F/9AM
DISPERSION 4 5
MAX ADI EARLY 23 FAIR 5 VERY POOR 53 GEN GOOD
MAX ADI LATE 75 GOOD 3 VERY POOR 138 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-172015-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 82 (+10) 62 (+9) 88
RH % (24H TREND) 45 (-5) 79 (-18) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1370 2180
MIXING HGT(FT-AGL/MSL)4500 7140
TRANSPORT WND (MPH) W 14 SW 17
VENT RATE (KT-FT) 54000 107100
CATEGORY DAY 4 5
INVERSION 65F/9AM 8PM 74F/9AM
DISPERSION 4 5
MAX ADI EARLY 26 FAIR 5 VERY POOR 53 GEN GOOD
MAX ADI LATE 77 GOOD 4 VERY POOR 147 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-172015-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 81 (+10) 62 (+8) 87
RH % (24H TREND) 46 (-6) 77 (-20) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1380 2130
MIXING HGT(FT-AGL/MSL)4510 7000
TRANSPORT WND (MPH) W 15 SW 18
VENT RATE (KT-FT) 58630 112000
CATEGORY DAY 4 5
INVERSION 64F/9AM 8PM 72F/9AM
DISPERSION 4 5
MAX ADI EARLY 31 FAIR 6 VERY POOR 58 GEN GOOD
MAX ADI LATE 83 GOOD 4 VERY POOR 145 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-172015-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 40 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 83 (+10) 62 (+9) 88
RH % (24H TREND) 41 (-7) 76 (-18) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1450 2140
MIXING HGT(FT-AGL/MSL)4760 7020
TRANSPORT WND (MPH) W 15 S 17
VENT RATE (KT-FT) 61880 105300
CATEGORY DAY 4 5
INVERSION 64F/9AM 8PM 72F/9AM
DISPERSION 4 5
MAX ADI EARLY 37 FAIR 6 VERY POOR 57 GEN GOOD
MAX ADI LATE 88 GOOD 4 VERY POOR 145 VERY GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-172015-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
122 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 40 0 30
CHANCE OF THUNDER (%) 20 0 30
TEMP (24H TREND) 79 (+8) 60 (+9) 83
RH % (24H TREND) 45 (-5) 76 (-20) 42
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.00 0.01
PRECIP DURATION 1 1
PRECIP BEGIN 6 AM 1 PM
PRECIP END 6 PM CONTINUING
MIXING HGT(M-AGL/MSL) 1420 2040
MIXING HGT(FT-AGL/MSL)4660 6690
TRANSPORT WND (MPH) W 16 SW 12
VENT RATE (KT-FT) 65240 66900
CATEGORY DAY 4 4
INVERSION 62F/9AM 8PM 71F/9AM
DISPERSION 4 4
MAX ADI EARLY 50 GEN GOOD 7 POOR 59 GEN GOOD
MAX ADI LATE 92 GOOD 4 VERY POOR 97 GOOD
MAX LVORI EARLY 6 3 4
MAX LVORI LATE 2 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
TUESDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
60S. HIGHS IN THE UPPER 80S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS. NOT AS WARM.
LOWS IN THE UPPER 60S. HIGHS IN THE UPPER 70S. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLOUDY. COOLER. LOWS IN THE UPPER 40S. HIGHS
IN THE UPPER 60S. NORTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE
LOWER 50S. HIGHS IN THE LOWER 70S. EAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE
MID 50S. HIGHS IN THE MID 70S. SOUTHEAST WINDS 10 TO 15 MPH.
CL
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page