797
FNUS51 KPBZ 010559
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
159 AM EDT FRI MAY 1 2026
DISCUSSION
SEASONABLY COOL TEMPERATURE PERSISTS THROUGH THE WEEKEND UNDER
GREAT LAKES TROUGHING WHILE OCCASIONAL SHORTWAVE PASSAGES,
INCLUDING THE TROUGH AXIS, OFFER PERIODIC RAIN CHANCES. A GRADUAL
WARM UP TO START THE NEXT WEEK WILL QUICKLY TRANSITION BACK TO AN
UNSEASONABLY COOL AND WET PATTERN AMID EASTERN CONUS TROUGHING.
OHZ039-012030-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 90 0 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 55 (+1) 33 (-5) 53
RH % (24H TREND) 61 (+5) 98 (+3) 48
WIND 20FT/EARLY(MPH) S 5 NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 9 LGT/VAR NW 6
PRECIP AMOUNT 0.14 0.00 0.00
PRECIP DURATION 5 1
PRECIP BEGIN 7 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1080 1700
MIXING HGT(FT-AGL/MSL)3550 5570
TRANSPORT WND (MPH) SW 22 NW 14
VENT RATE (KT-FT) 72770 76810
CATEGORY DAY 4 4
INVERSION 45F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 74 GOOD 22 FAIR 28 FAIR
MAX ADI LATE 70 GOOD 3 VERY POOR 61 GOOD
MAX LVORI EARLY 4 5 6
MAX LVORI LATE 2 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-012030-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 90 0 20
CHANCE OF THUNDER (%) 20 0 20
TEMP (24H TREND) 54 (0) 32 (-5) 52
RH % (24H TREND) 60 (+1) 97 (0) 49
WIND 20FT/EARLY(MPH) S 6 NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 9 G17 LGT/VAR NW 6
PRECIP AMOUNT 0.14 0.00 0.00
PRECIP DURATION 5 1
PRECIP BEGIN 7 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1180 1660
MIXING HGT(FT-AGL/MSL)3860 5450
TRANSPORT WND (MPH) SW 22 NW 12
VENT RATE (KT-FT) 83980 66580
CATEGORY DAY 4 4
INVERSION 45F/9AM 8PM 37F/8AM
DISPERSION 5 5
MAX ADI EARLY 79 GOOD 21 FAIR 24 FAIR
MAX ADI LATE 76 GOOD 3 VERY POOR 54 GEN GOOD
MAX LVORI EARLY 4 5 6
MAX LVORI LATE 3 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-012030-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 90 0 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 54 (0) 32 (-5) 52
RH % (24H TREND) 60 (+2) 96 (+4) 49
WIND 20FT/EARLY(MPH) S 5 NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 9 LGT/VAR NW 6
PRECIP AMOUNT 0.19 0.00 0.00
PRECIP DURATION 5 1
PRECIP BEGIN 7 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1260 1650
MIXING HGT(FT-AGL/MSL)4150 5430
TRANSPORT WND (MPH) SW 22 NW 12
VENT RATE (KT-FT) 88140 64970
CATEGORY DAY 4 4
INVERSION 45F/9AM 9PM 37F/8AM
DISPERSION 5 5
MAX ADI EARLY 73 GOOD 20 GEN POOR 26 FAIR
MAX ADI LATE 79 GOOD 4 VERY POOR 47 GEN GOOD
MAX LVORI EARLY 5 5 6
MAX LVORI LATE 3 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-012030-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 56 (+1) 33 (-5) 53
RH % (24H TREND) 59 (+13) 99 (+10) 47
WIND 20FT/EARLY(MPH) S 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 8 LGT/VAR NW 5
PRECIP AMOUNT 0.10 0.00 0.00
PRECIP DURATION 5
PRECIP BEGIN 7 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1030 1850
MIXING HGT(FT-AGL/MSL)3370 6080
TRANSPORT WND (MPH) NW 17 NW 14
VENT RATE (KT-FT) 63800 78410
CATEGORY DAY 4 4
INVERSION 45F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 69 GOOD 21 FAIR 36 FAIR
MAX ADI LATE 59 GEN GOOD 3 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 4 5 6
MAX LVORI LATE 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-012030-
HARRISON-
INCLUDING THE CITY OF CADIZ
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 80 0 20
CHANCE OF THUNDER (%) 20 0 20
TEMP (24H TREND) 56 (+1) 32 (-5) 53
RH % (24H TREND) 55 (-3) 98 (-2) 47
WIND 20FT/EARLY(MPH) S 6 NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 9 G17 LGT/VAR NW 6
PRECIP AMOUNT 0.14 0.00 0.00
PRECIP DURATION 6 1
PRECIP BEGIN 8 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1350 1560
MIXING HGT(FT-AGL/MSL)4440 5130
TRANSPORT WND (MPH) SW 22 NW 12
VENT RATE (KT-FT) 91300 63210
CATEGORY DAY 4 3
INVERSION 46F/9AM 8PM 41F/9AM
DISPERSION 5 5
MAX ADI EARLY 79 GOOD 22 FAIR 26 FAIR
MAX ADI LATE 84 GOOD 3 VERY POOR 48 GEN GOOD
MAX LVORI EARLY 5 5 7
MAX LVORI LATE 2 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-012030-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 80 0 20
CHANCE OF THUNDER (%) 20 0 20
TEMP (24H TREND) 57 (+2) 32 (-6) 53
RH % (24H TREND) 51 (-8) 97 (-2) 44
WIND 20FT/EARLY(MPH) S 5 NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 G17 LGT/VAR NW 6
PRECIP AMOUNT 0.12 0.00 0.00
PRECIP DURATION 6 1
PRECIP BEGIN 8 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1430 1600
MIXING HGT(FT-AGL/MSL)4700 5250
TRANSPORT WND (MPH) SW 22 NW 12
VENT RATE (KT-FT) 96620 58610
CATEGORY DAY 4 4
INVERSION 45F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 77 GOOD 20 GEN POOR 24 FAIR
MAX ADI LATE 86 GOOD 3 VERY POOR 48 GEN GOOD
MAX LVORI EARLY 5 4 6
MAX LVORI LATE 2 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-012030-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 57 (+1) 33 (-5) 55
RH % (24H TREND) 56 (+10) 99 (+8) 44
WIND 20FT/EARLY(MPH) S 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 9 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.09 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 7 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1190 1990
MIXING HGT(FT-AGL/MSL)3920 6520
TRANSPORT WND (MPH) NW 20 NW 14
VENT RATE (KT-FT) 76970 89430
CATEGORY DAY 4 4
INVERSION 47F/9AM 8PM 41F/9AM
DISPERSION 5 5
MAX ADI EARLY 62 GOOD 24 FAIR 36 FAIR
MAX ADI LATE 71 GOOD 4 VERY POOR 62 GOOD
MAX LVORI EARLY 4 4 7
MAX LVORI LATE 2 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-012030-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 80 0 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 58 (+2) 33 (-5) 55
RH % (24H TREND) 53 (-2) 100 (+4) 43
WIND 20FT/EARLY(MPH) S 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 8 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.12 0.00 0.00
PRECIP DURATION 5 1
PRECIP BEGIN 8 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1260 1880
MIXING HGT(FT-AGL/MSL)4150 6160
TRANSPORT WND (MPH) SW 21 NW 13
VENT RATE (KT-FT) 85200 77990
CATEGORY DAY 4 4
INVERSION 47F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 71 GOOD 23 FAIR 32 FAIR
MAX ADI LATE 73 GOOD 4 VERY POOR 61 GOOD
MAX LVORI EARLY 4 5 7
MAX LVORI LATE 1 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-012030-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 70 0 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 58 (+2) 33 (-5) 55
RH % (24H TREND) 49 (-9) 100 (+1) 43
WIND 20FT/EARLY(MPH) S 5 NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 G18 LGT/VAR NW 6
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 9 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1450 1660
MIXING HGT(FT-AGL/MSL)4760 5440
TRANSPORT WND (MPH) SW 22 NW 10
VENT RATE (KT-FT) 98150 60220
CATEGORY DAY 4 4
INVERSION 47F/9AM 8PM 41F/9AM
DISPERSION 5 5
MAX ADI EARLY 72 GOOD 23 FAIR 26 FAIR
MAX ADI LATE 84 GOOD 4 VERY POOR 52 GEN GOOD
MAX LVORI EARLY 5 5 7
MAX LVORI LATE 1 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-012030-
NOBLE-
INCLUDING THE CITY OF CALDWELL
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 70 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 59 (+2) 33 (-5) 55
RH % (24H TREND) 51 (-7) 100 (+6) 41
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 8 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.07 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 9 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1330 1860
MIXING HGT(FT-AGL/MSL)4370 6100
TRANSPORT WND (MPH) SW 20 NW 13
VENT RATE (KT-FT) 80280 73220
CATEGORY DAY 4 4
INVERSION 47F/9AM 8PM 41F/9AM
DISPERSION 5 5
MAX ADI EARLY 73 GOOD 25 FAIR 32 FAIR
MAX ADI LATE 76 GOOD 4 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 5 5 7
MAX LVORI LATE 1 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-012030-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE NONE
CHANCE PRECIP (%) 70 0 0
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 59 (+2) 34 (-5) 56
RH % (24H TREND) 47 (-13) 99 (+3) 40
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 3
PRECIP BEGIN 10 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1530 1920
MIXING HGT(FT-AGL/MSL)5030 6300
TRANSPORT WND (MPH) SW 20 NW 10
VENT RATE (KT-FT) 100210 67190
CATEGORY DAY 4 4
INVERSION 46F/9AM 8PM 41F/9AM
DISPERSION 5 5
MAX ADI EARLY 71 GOOD 25 FAIR 26 FAIR
MAX ADI LATE 79 GOOD 4 VERY POOR 57 GEN GOOD
MAX LVORI EARLY 6 4 7
MAX LVORI LATE 1 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-012030-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 0 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 51 (-2) 30 (-5) 52
RH % (24H TREND) 72 (+17) 100 (+7) 47
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 7 LGT/VAR NW 7
PRECIP AMOUNT 0.23 0.00 0.00
PRECIP DURATION 6 1
PRECIP BEGIN 7 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 890 1950
MIXING HGT(FT-AGL/MSL)2910 6410
TRANSPORT WND (MPH) SW 15 NW 13
VENT RATE (KT-FT) 57120 73870
CATEGORY DAY 3 4
INVERSION 43F/9AM 9PM 35F/8AM
DISPERSION 5 5
MAX ADI EARLY 37 FAIR 13 GEN POOR 32 FAIR
MAX ADI LATE 41 GEN GOOD 4 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 6 6 8
MAX LVORI LATE 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-012030-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 90 0 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 51 (-1) 30 (-4) 52
RH % (24H TREND) 70 (+7) 100 (+3) 45
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR NW 5
PRECIP AMOUNT 0.23 0.00 0.00
PRECIP DURATION 6 1
PRECIP BEGIN 7 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 970 2140
MIXING HGT(FT-AGL/MSL)3180 7030
TRANSPORT WND (MPH) SW 14 NW 12
VENT RATE (KT-FT) 58250 84710
CATEGORY DAY 3 4
INVERSION 42F/9AM 9PM 34F/8AM
DISPERSION 5 5
MAX ADI EARLY 37 FAIR 8 POOR 33 FAIR
MAX ADI LATE 42 GEN GOOD 4 VERY POOR 81 GOOD
MAX LVORI EARLY 6 6 9
MAX LVORI LATE 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-012030-
FOREST-
INCLUDING THE CITY OF TIONESTA
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 50 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 50 (-1) 29 (-5) 51
RH % (24H TREND) 64 (-8) 100 (+1) 41
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR NW 5
PRECIP AMOUNT 0.21 0.03 0.00
PRECIP DURATION 6 0 0
PRECIP BEGIN 9 AM CONTINUING 2 PM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1070 2200
MIXING HGT(FT-AGL/MSL)3520 7210
TRANSPORT WND (MPH) SW 12 NW 10
VENT RATE (KT-FT) 49720 76020
CATEGORY DAY 3 4
INVERSION 41F/9AM 11PM 33F/8AM
DISPERSION 5 5
MAX ADI EARLY 43 GEN GOOD 8 POOR 40 FAIR
MAX ADI LATE 38 FAIR 4 VERY POOR 54 GEN GOOD
MAX LVORI EARLY 7 6 9
MAX LVORI LATE 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-012030-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 90 0 30
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 54 (0) 31 (-4) 53
RH % (24H TREND) 64 (+9) 99 (+6) 47
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 7 LGT/VAR NW 6
PRECIP AMOUNT 0.21 0.00 0.00
PRECIP DURATION 6 2
PRECIP BEGIN 7 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1270 1760
MIXING HGT(FT-AGL/MSL)4150 5790
TRANSPORT WND (MPH) SW 20 NW 12
VENT RATE (KT-FT) 87700 68120
CATEGORY DAY 4 4
INVERSION 44F/9AM 9PM 36F/8AM
DISPERSION 5 5
MAX ADI EARLY 54 GEN GOOD 14 GEN POOR 25 FAIR
MAX ADI LATE 69 GOOD 4 VERY POOR 53 GEN GOOD
MAX LVORI EARLY 5 6 6
MAX LVORI LATE 3 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-012030-
BUTLER-
INCLUDING THE CITY OF BUTLER
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 55 (+1) 31 (-4) 53
RH % (24H TREND) 61 (-3) 100 (+4) 48
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR NW 5
PRECIP AMOUNT 0.19 0.02 0.00
PRECIP DURATION 6 0 1
PRECIP BEGIN 9 AM CONTINUING 8 AM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1390 1760
MIXING HGT(FT-AGL/MSL)4560 5760
TRANSPORT WND (MPH) SW 18 NW 12
VENT RATE (KT-FT) 85970 64690
CATEGORY DAY 4 4
INVERSION 44F/9AM 10PM 38F/9AM
DISPERSION 5 5
MAX ADI EARLY 53 GEN GOOD 12 POOR 20 GEN POOR
MAX ADI LATE 73 GOOD 4 VERY POOR 50 GEN GOOD
MAX LVORI EARLY 6 6 9
MAX LVORI LATE 3 9 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-012030-
CLARION-
INCLUDING THE CITY OF CLARION
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 50 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+2) 30 (-4) 53
RH % (24H TREND) 62 (-8) 100 (+3) 44
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 LGT/VAR NW 5
PRECIP AMOUNT 0.19 0.03 0.00
PRECIP DURATION 6 0 1
PRECIP BEGIN 9 AM CONTINUING 8 AM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1290 2020
MIXING HGT(FT-AGL/MSL)4220 6630
TRANSPORT WND (MPH) SW 16 NW 10
VENT RATE (KT-FT) 84060 71090
CATEGORY DAY 4 4
INVERSION 42F/9AM 11PM 37F/9AM
DISPERSION 5 5
MAX ADI EARLY 48 GEN GOOD 9 POOR 29 FAIR
MAX ADI LATE 60 GEN GOOD 4 VERY POOR 51 GEN GOOD
MAX LVORI EARLY 6 5 9
MAX LVORI LATE 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-012030-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 70 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+2) 31 (-3) 52
RH % (24H TREND) 57 (-14) 98 (+2) 42
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 6 LGT/VAR NW 6
PRECIP AMOUNT 0.16 0.05 0.00
PRECIP DURATION 5 1 1
PRECIP BEGIN 10 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1440 2020
MIXING HGT(FT-AGL/MSL)4740 6620
TRANSPORT WND (MPH) SW 17 NW 12
VENT RATE (KT-FT) 87450 81180
CATEGORY DAY 4 4
INVERSION 42F/9AM 2AM 35F/8AM
DISPERSION 5 5
MAX ADI EARLY 50 GEN GOOD 10 POOR 32 FAIR
MAX ADI LATE 72 GOOD 8 POOR 56 GEN GOOD
MAX LVORI EARLY 6 5 7
MAX LVORI LATE 2 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-012030-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 40 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 56 (+2) 33 (-5) 54
RH % (24H TREND) 57 (-2) 97 (+4) 46
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) W 7 LGT/VAR NW 5
PRECIP AMOUNT 0.15 0.02 0.00
PRECIP DURATION 6 0 1
PRECIP BEGIN 8 AM CONTINUING 8 AM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1460 1660
MIXING HGT(FT-AGL/MSL)4780 5440
TRANSPORT WND (MPH) SW 22 NW 10
VENT RATE (KT-FT) 98120 61050
CATEGORY DAY 4 4
INVERSION 45F/9AM 9PM 37F/8AM
DISPERSION 5 5
MAX ADI EARLY 63 GOOD 20 GEN POOR 23 FAIR
MAX ADI LATE 86 GOOD 3 VERY POOR 47 GEN GOOD
MAX LVORI EARLY 5 5 6
MAX LVORI LATE 3 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-012030-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 20
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 58 (+4) 33 (-5) 55
RH % (24H TREND) 53 (-11) 98 (+4) 45
WIND 20FT/EARLY(MPH) LGT/VAR NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 LGT/VAR NW 6
PRECIP AMOUNT 0.11 0.03 0.00
PRECIP DURATION 4 1 1
PRECIP BEGIN 9 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1460 1680
MIXING HGT(FT-AGL/MSL)4770 5510
TRANSPORT WND (MPH) SW 20 NW 10
VENT RATE (KT-FT) 93010 58780
CATEGORY DAY 4 4
INVERSION 45F/9AM 9PM 38F/8AM
DISPERSION 5 5
MAX ADI EARLY 67 GOOD 20 GEN POOR 21 FAIR
MAX ADI LATE 75 GOOD 4 VERY POOR 44 GEN GOOD
MAX LVORI EARLY 6 5 6
MAX LVORI LATE 2 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-012030-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 60 20
CHANCE OF THUNDER (%) 20 0 0
TEMP (24H TREND) 56 (+2) 31 (-4) 54
RH % (24H TREND) 57 (-11) 100 (+2) 46
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR NW 5
PRECIP AMOUNT 0.16 0.04 0.00
PRECIP DURATION 5 1 1
PRECIP BEGIN 10 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1480 1740
MIXING HGT(FT-AGL/MSL)4860 5700
TRANSPORT WND (MPH) SW 20 NW 10
VENT RATE (KT-FT) 91150 62100
CATEGORY DAY 4 4
INVERSION 44F/9AM 11PM 36F/8AM
DISPERSION 5 5
MAX ADI EARLY 52 GEN GOOD 11 POOR 20 GEN POOR
MAX ADI LATE 78 GOOD 5 VERY POOR 46 GEN GOOD
MAX LVORI EARLY 7 5 9
MAX LVORI LATE 3 9 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-012030-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 50 20
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 57 (+3) 33 (-4) 54
RH % (24H TREND) 51 (-7) 98 (+2) 45
WIND 20FT/EARLY(MPH) S 5 NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 G17 LGT/VAR NW 6
PRECIP AMOUNT 0.08 0.02 0.00
PRECIP DURATION 3 0 1
PRECIP BEGIN 10 AM CONTINUING 8 AM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1520 1620
MIXING HGT(FT-AGL/MSL)4980 5320
TRANSPORT WND (MPH) SW 20 NW 9
VENT RATE (KT-FT) 93200 57450
CATEGORY DAY 4 3
INVERSION 46F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 69 GOOD 20 GEN POOR 22 FAIR
MAX ADI LATE 79 GOOD 4 VERY POOR 43 GEN GOOD
MAX LVORI EARLY 5 5 6
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-012030-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 50 20
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 58 (+3) 33 (-5) 55
RH % (24H TREND) 46 (-18) 100 (+3) 46
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 8 LGT/VAR NW 5
PRECIP AMOUNT 0.06 0.03 0.00
PRECIP DURATION 2 1 0
PRECIP BEGIN 11 AM CONTINUING 2 PM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1720 1690
MIXING HGT(FT-AGL/MSL)5640 5550
TRANSPORT WND (MPH) SW 20 NW 10
VENT RATE (KT-FT) 103760 59030
CATEGORY DAY 4 4
INVERSION 46F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 70 GOOD 23 FAIR 25 FAIR
MAX ADI LATE 85 GOOD 4 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 6 5 8
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-012030-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 80 70 20
CHANCE OF THUNDER (%) 0 20 20
TEMP (24H TREND) 58 (+4) 33 (-4) 55
RH % (24H TREND) 50 (-13) 100 (+2) 45
WIND 20FT/EARLY(MPH) LGT/VAR W 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 LGT/VAR NW 6
PRECIP AMOUNT 0.08 0.05 0.00
PRECIP DURATION 3 1 1
PRECIP BEGIN 11 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1450 1680
MIXING HGT(FT-AGL/MSL)4760 5510
TRANSPORT WND (MPH) SW 17 NW 10
VENT RATE (KT-FT) 89170 61060
CATEGORY DAY 4 4
INVERSION 46F/9AM 9PM 36F/7AM
DISPERSION 5 5
MAX ADI EARLY 65 GOOD 19 GEN POOR 19 GEN POOR
MAX ADI LATE 72 GOOD 5 VERY POOR 44 GEN GOOD
MAX LVORI EARLY 6 5 8
MAX LVORI LATE 2 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-012030-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS
CHANCE PRECIP (%) 70 70 20
CHANCE OF THUNDER (%) 0 20 0
TEMP (24H TREND) 59 (+7) 35 (-2) 55
RH % (24H TREND) 44 (-28) 92 (-4) 39
WIND 20FT/EARLY(MPH) LGT/VAR W 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR NW 5
PRECIP AMOUNT 0.07 0.06 0.00
PRECIP DURATION 3 2 1
PRECIP BEGIN 1 PM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1590 1700
MIXING HGT(FT-AGL/MSL)5220 5580
TRANSPORT WND (MPH) SW 17 NW 12
VENT RATE (KT-FT) 93690 60440
CATEGORY DAY 4 4
INVERSION 45F/9AM 8PM 38F/4AM
DISPERSION 5 5
MAX ADI EARLY 57 GEN GOOD 16 GEN POOR 30 FAIR
MAX ADI LATE 71 GOOD 5 VERY POOR 45 GEN GOOD
MAX LVORI EARLY 5 5 5
MAX LVORI LATE 1 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-012030-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 30
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 59 (+4) 34 (-4) 55
RH % (24H TREND) 46 (-14) 100 (+4) 46
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 8 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.06 0.00
PRECIP DURATION 2 1 1
PRECIP BEGIN 12 PM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1700 1710
MIXING HGT(FT-AGL/MSL)5590 5600
TRANSPORT WND (MPH) SW 18 NW 10
VENT RATE (KT-FT) 97720 55050
CATEGORY DAY 4 4
INVERSION 47F/9AM 8PM 37F/7AM
DISPERSION 5 5
MAX ADI EARLY 63 GOOD 20 GEN POOR 22 FAIR
MAX ADI LATE 77 GOOD 4 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 6 5 7
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-012030-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 70 30
CHANCE OF THUNDER (%) 20 20 0
TEMP (24H TREND) 58 (+6) 33 (-3) 53
RH % (24H TREND) 44 (-28) 97 (+2) 44
WIND 20FT/EARLY(MPH) LGT/VAR W 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 6 LGT/VAR NW 5
PRECIP AMOUNT 0.06 0.07 0.00
PRECIP DURATION 1 1 1
PRECIP BEGIN 1 PM CONTINUING 8 AM
PRECIP END CONTINUING 11 PM 6 PM
MIXING HGT(M-AGL/MSL) 1660 1670
MIXING HGT(FT-AGL/MSL)5450 5470
TRANSPORT WND (MPH) SW 18 NW 12
VENT RATE (KT-FT) 96080 59200
CATEGORY DAY 4 4
INVERSION 44F/9AM 8PM 37F/8AM
DISPERSION 5 5
MAX ADI EARLY 50 GEN GOOD 12 POOR 24 FAIR
MAX ADI LATE 77 GOOD 5 VERY POOR 59 GEN GOOD
MAX LVORI EARLY 5 5 6
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-012030-
INDIANA-
INCLUDING THE CITY OF INDIANA
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 57 (+4) 33 (-3) 55
RH % (24H TREND) 53 (-22) 100 (+3) 44
WIND 20FT/EARLY(MPH) LGT/VAR W 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 8 LGT/VAR NW 6
PRECIP AMOUNT 0.13 0.05 0.00
PRECIP DURATION 5 1 1
PRECIP BEGIN 11 AM CONTINUING 8 AM
PRECIP END CONTINUING 10 PM 6 PM
MIXING HGT(M-AGL/MSL) 1490 1610
MIXING HGT(FT-AGL/MSL)4900 5280
TRANSPORT WND (MPH) SW 18 NW 12
VENT RATE (KT-FT) 87350 60670
CATEGORY DAY 4 4
INVERSION 44F/9AM 8PM 37F/8AM
DISPERSION 5 5
MAX ADI EARLY 56 GEN GOOD 17 GEN POOR 22 FAIR
MAX ADI LATE 75 GOOD 5 VERY POOR 46 GEN GOOD
MAX LVORI EARLY 6 5 7
MAX LVORI LATE 2 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-012030-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 57 (+5) 35 (-1) 54
RH % (24H TREND) 49 (-29) 94 (-3) 41
WIND 20FT/EARLY(MPH) LGT/VAR W 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR NW 6
PRECIP AMOUNT 0.10 0.05 0.00
PRECIP DURATION 4 2 1
PRECIP BEGIN 12 PM CONTINUING 8 AM
PRECIP END CONTINUING 10 PM 6 PM
MIXING HGT(M-AGL/MSL) 1460 1670
MIXING HGT(FT-AGL/MSL)4780 5490
TRANSPORT WND (MPH) SW 17 NW 10
VENT RATE (KT-FT) 76820 59600
CATEGORY DAY 4 4
INVERSION 44F/9AM 8PM 38F/8AM
DISPERSION 5 5
MAX ADI EARLY 49 GEN GOOD 17 GEN POOR 28 FAIR
MAX ADI LATE 73 GOOD 8 POOR 43 GEN GOOD
MAX LVORI EARLY 6 5 6
MAX LVORI LATE 1 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-012030-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 90 0 20
CHANCE OF THUNDER (%) 20 0 20
TEMP (24H TREND) 56 (+2) 34 (-4) 53
RH % (24H TREND) 55 (-5) 95 (-1) 46
WIND 20FT/EARLY(MPH) LGT/VAR NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 8 LGT/VAR NW 5
PRECIP AMOUNT 0.12 0.00 0.00
PRECIP DURATION 6 1
PRECIP BEGIN 8 AM 8 AM
PRECIP END 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 1430 1690
MIXING HGT(FT-AGL/MSL)4680 5530
TRANSPORT WND (MPH) SW 22 NW 12
VENT RATE (KT-FT) 94200 59990
CATEGORY DAY 4 4
INVERSION 45F/9AM 9PM 37F/8AM
DISPERSION 5 5
MAX ADI EARLY 66 GOOD 20 GEN POOR 25 FAIR
MAX ADI LATE 86 GOOD 3 VERY POOR 51 GEN GOOD
MAX LVORI EARLY 5 4 6
MAX LVORI LATE 2 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-012030-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 40 20
CHANCE OF THUNDER (%) 20 0 20
TEMP (24H TREND) 58 (+3) 34 (-5) 54
RH % (24H TREND) 50 (-7) 94 (+1) 44
WIND 20FT/EARLY(MPH) S 5 NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 G17 LGT/VAR NW 6
PRECIP AMOUNT 0.11 0.02 0.00
PRECIP DURATION 4 0 1
PRECIP BEGIN 9 AM CONTINUING 8 AM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1490 1500
MIXING HGT(FT-AGL/MSL)4900 4910
TRANSPORT WND (MPH) SW 21 NW 9
VENT RATE (KT-FT) 96200 43590
CATEGORY DAY 4 3
INVERSION 46F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 70 GOOD 20 GEN POOR 23 FAIR
MAX ADI LATE 86 GOOD 3 VERY POOR 46 GEN GOOD
MAX LVORI EARLY 5 4 6
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-012030-
OHIO-
INCLUDING THE CITY OF WHEELING
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 80 30 20
CHANCE OF THUNDER (%) 20 0 20
TEMP (24H TREND) 58 (+3) 33 (-6) 54
RH % (24H TREND) 50 (-6) 97 (+1) 43
WIND 20FT/EARLY(MPH) S 5 NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 G17 LGT/VAR NW 6
PRECIP AMOUNT 0.06 0.01 0.00
PRECIP DURATION 4 0 1
PRECIP BEGIN 10 AM CONTINUING 8 AM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1440 1650
MIXING HGT(FT-AGL/MSL)4740 5410
TRANSPORT WND (MPH) SW 21 NW 10
VENT RATE (KT-FT) 99200 50670
CATEGORY DAY 4 4
INVERSION 46F/9AM 8PM 40F/9AM
DISPERSION 5 5
MAX ADI EARLY 67 GOOD 22 FAIR 27 FAIR
MAX ADI LATE 81 GOOD 4 VERY POOR 45 GEN GOOD
MAX LVORI EARLY 5 5 7
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-012030-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 30 20
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 58 (+3) 34 (-5) 56
RH % (24H TREND) 50 (-12) 97 (+3) 44
WIND 20FT/EARLY(MPH) LGT/VAR NW 6 LGT/VAR
WIND 20FT/LATE(MPH) SW 9 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.08 0.01 0.00
PRECIP DURATION 2 0 0
PRECIP BEGIN 10 AM CONTINUING 2 PM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1530 1820
MIXING HGT(FT-AGL/MSL)5010 5980
TRANSPORT WND (MPH) SW 20 NW 10
VENT RATE (KT-FT) 99970 66890
CATEGORY DAY 4 4
INVERSION 47F/9AM 8PM 38F/8AM
DISPERSION 5 5
MAX ADI EARLY 65 GOOD 24 FAIR 25 FAIR
MAX ADI LATE 79 GOOD 4 VERY POOR 71 GOOD
MAX LVORI EARLY 5 5 7
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-012030-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 30 20
CHANCE OF THUNDER (%) 20 20 0
TEMP (24H TREND) 59 (+4) 35 (-4) 55
RH % (24H TREND) 48 (-14) 99 (+5) 44
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.02 0.00
PRECIP DURATION 2 0 0
PRECIP BEGIN 11 AM CONTINUING 2 PM
PRECIP END CONTINUING 8 PM 6 PM
MIXING HGT(M-AGL/MSL) 1750 1950
MIXING HGT(FT-AGL/MSL)5730 6400
TRANSPORT WND (MPH) SW 21 NW 10
VENT RATE (KT-FT) 115600 66020
CATEGORY DAY 4 4
INVERSION 46F/9AM 8PM 39F/8AM
DISPERSION 5 5
MAX ADI EARLY 69 GOOD 21 FAIR 27 FAIR
MAX ADI LATE 88 GOOD 4 VERY POOR 77 GOOD
MAX LVORI EARLY 6 5 6
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-012030-
MARION-
INCLUDING THE CITY OF FAIRMONT
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 20
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 60 (+5) 34 (-4) 55
RH % (24H TREND) 42 (-18) 100 (+1) 45
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.02 0.02 0.00
PRECIP DURATION 2 0 0
PRECIP BEGIN 12 PM CONTINUING 2 PM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1960 1880
MIXING HGT(FT-AGL/MSL)6450 6160
TRANSPORT WND (MPH) SW 21 NW 10
VENT RATE (KT-FT) 123260 63510
CATEGORY DAY 5 4
INVERSION 45F/9AM 8PM 38F/8AM
DISPERSION 5 5
MAX ADI EARLY 60 GEN GOOD 23 FAIR 28 FAIR
MAX ADI LATE 93 GOOD 3 VERY POOR 71 GOOD
MAX LVORI EARLY 7 5 9
MAX LVORI LATE 1 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-012030-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 20
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 59 (+4) 34 (-4) 55
RH % (24H TREND) 43 (-21) 100 (+3) 45
WIND 20FT/EARLY(MPH) LGT/VAR NW 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.02 0.00
PRECIP DURATION 2 0 1
PRECIP BEGIN 11 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1880 1800
MIXING HGT(FT-AGL/MSL)6160 5890
TRANSPORT WND (MPH) SW 21 NW 10
VENT RATE (KT-FT) 122090 58790
CATEGORY DAY 5 4
INVERSION 46F/9AM 8PM 37F/7AM
DISPERSION 5 5
MAX ADI EARLY 58 GEN GOOD 15 GEN POOR 23 FAIR
MAX ADI LATE 91 GOOD 3 VERY POOR 67 GOOD
MAX LVORI EARLY 6 5 7
MAX LVORI LATE 1 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-012030-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 60 30
CHANCE OF THUNDER (%) 20 20 20
TEMP (24H TREND) 58 (+6) 34 (-3) 52
RH % (24H TREND) 42 (-24) 99 (+1) 44
WIND 20FT/EARLY(MPH) LGT/VAR W 5 LGT/VAR
WIND 20FT/LATE(MPH) SW 7 LGT/VAR NW 5
PRECIP AMOUNT 0.03 0.04 0.00
PRECIP DURATION 1 1 1
PRECIP BEGIN 11 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1800 1680
MIXING HGT(FT-AGL/MSL)5910 5520
TRANSPORT WND (MPH) SW 21 NW 10
VENT RATE (KT-FT) 113150 53230
CATEGORY DAY 5 4
INVERSION 44F/9AM 7PM 39F/9AM
DISPERSION 5 5
MAX ADI EARLY 42 GEN GOOD 13 GEN POOR 22 FAIR
MAX ADI LATE 90 GOOD 4 VERY POOR 61 GOOD
MAX LVORI EARLY 6 5 7
MAX LVORI LATE 1 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-012030-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 40 60 30
CHANCE OF THUNDER (%) 20 20 0
TEMP (24H TREND) 60 (+7) 34 (-3) 54
RH % (24H TREND) 39 (-26) 99 (0) 43
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.02 0.05 0.00
PRECIP DURATION 1 1 1
PRECIP BEGIN 11 AM CONTINUING 8 AM
PRECIP END CONTINUING 9 PM 6 PM
MIXING HGT(M-AGL/MSL) 1990 1870
MIXING HGT(FT-AGL/MSL)6540 6130
TRANSPORT WND (MPH) SW 21 NW 12
VENT RATE (KT-FT) 131580 67880
CATEGORY DAY 5 4
INVERSION 45F/9AM 8PM 37F/4AM
DISPERSION 5 5
MAX ADI EARLY 46 GEN GOOD 12 POOR 28 FAIR
MAX ADI LATE 95 GOOD 4 VERY POOR 69 GOOD
MAX LVORI EARLY 6 5 6
MAX LVORI LATE 1 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-012030-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 40 50 30
CHANCE OF THUNDER (%) 20 20 0
TEMP (24H TREND) 59 (+8) 35 (-2) 52
RH % (24H TREND) 39 (-29) 96 (-2) 44
WIND 20FT/EARLY(MPH) LGT/VAR W 6 LGT/VAR
WIND 20FT/LATE(MPH) W 7 LGT/VAR NW 5
PRECIP AMOUNT 0.02 0.07 0.00
PRECIP DURATION 1 1 1
PRECIP BEGIN 11 AM CONTINUING 8 AM
PRECIP END CONTINUING 10 PM 6 PM
MIXING HGT(M-AGL/MSL) 2020 1810
MIXING HGT(FT-AGL/MSL)6630 5950
TRANSPORT WND (MPH) SW 21 NW 12
VENT RATE (KT-FT) 148200 69530
CATEGORY DAY 5 4
INVERSION 43F/9AM 8PM 37F/4AM
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 25 FAIR 29 FAIR
MAX ADI LATE 122 VERY GOOD8 POOR 72 GOOD
MAX LVORI EARLY 6 5 6
MAX LVORI LATE 1 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-012030-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 62 (+10) 35 (-2) 54
RH % (24H TREND) 33 (-28) 96 (-1) 41
WIND 20FT/EARLY(MPH) LGT/VAR W 5 LGT/VAR
WIND 20FT/LATE(MPH) W 7 G17 LGT/VAR NW 5
PRECIP AMOUNT 0.01 0.06 0.00
PRECIP DURATION 0 1 1
PRECIP BEGIN 3 PM CONTINUING 8 AM
PRECIP END CONTINUING 10 PM 6 PM
MIXING HGT(M-AGL/MSL) 2280 1880
MIXING HGT(FT-AGL/MSL)7490 6160
TRANSPORT WND (MPH) SW 22 NW 10
VENT RATE (KT-FT) 158340 61570
CATEGORY DAY 5 4
INVERSION 43F/9AM 9PM 38F/4AM
DISPERSION 5 5
MAX ADI EARLY 49 GEN GOOD 26 FAIR 28 FAIR
MAX ADI LATE 150 VERY GOOD5 VERY POOR 67 GOOD
MAX LVORI EARLY 6 5 5
MAX LVORI LATE 1 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-012030-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
159 AM EDT FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 59 (+11) 32 (-2) 51
RH % (24H TREND) 36 (-33) 97 (-1) 47
WIND 20FT/EARLY(MPH) LGT/VAR W 7 G22 LGT/VAR
WIND 20FT/LATE(MPH) W 8 G23 LGT/VAR NW 6 G18
PRECIP AMOUNT 0.01 0.05 0.00
PRECIP DURATION 0 1 1
PRECIP BEGIN 4 PM CONTINUING 8 AM
PRECIP END CONTINUING 10 PM 6 PM
MIXING HGT(M-AGL/MSL) 2220 1740
MIXING HGT(FT-AGL/MSL)7280 5720
TRANSPORT WND (MPH) SW 23 W 10
VENT RATE (KT-FT) 160960 63570
CATEGORY DAY 5 4
INVERSION 42F/9AM 9PM 36F/4AM
DISPERSION 5 5
MAX ADI EARLY 54 GEN GOOD 27 FAIR 31 FAIR
MAX ADI LATE 133 VERY GOOD11 POOR 71 GOOD
MAX LVORI EARLY 6 5 5
MAX LVORI LATE 1 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
PARTLY CLOUDY. WIDESPREAD FROST. LOWS IN THE LOWER 30S.
HIGHS IN THE UPPER 50S. WEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE LOWER
40S. HIGHS IN THE UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE MID
50S. HIGHS AROUND 70. SOUTHWEST WINDS 10 TO 15 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS AROUND 50.
HIGHS IN THE MID 60S. SOUTHWEST WINDS 10 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE LOWER
40S. HIGHS IN THE UPPER 50S. WEST WINDS 10 TO 15 MPH.
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