255
FNUS51 KPBZ 040415
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1215 AM EDT FRI SEP 4 2026
DISCUSSION
ROUNDS OF SHOWERS AND THUNDERSTORMS CONTINUE THROUGH FRIDAY NIGHT
ON A SATURATED GROUND. WIND OUTSIDE OF STORMS WILL BE LIGHT AROUND
5-10 KNOTS. A COLD FRONT PASSES THROUGH SATURDAY AFTERNOON AND
WILL RETURN DRY WEATHER WITH LOWER DEW POINTS AND NORTHERLY WIND
LATE THIS WEEKEND INTO EARLY NEXT WEEK.
OHZ039-042015-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 50
CHANCE OF THUNDER (%) 30 40 20
TEMP (24H TREND) 85 (-4) 67 (-3) 81
RH % (24H TREND) 70 (+11) 100 (0) 71
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.23 0.06
PRECIP DURATION 2 4 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 730 1050
MIXING HGT(FT-AGL/MSL)2390 3450
TRANSPORT WND (MPH) W 9 NW 10
VENT RATE (KT-FT) 19120 31050
CATEGORY DAY 2 3
INVERSION 76F/10AM 7PM 72F/10AM
DISPERSION 2 3
MAX ADI EARLY 15 GEN POOR 4 VERY POOR 18 GEN POOR
MAX ADI LATE 28 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 4 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-042015-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 84 (-5) 65 (-4) 80
RH % (24H TREND) 71 (+12) 100 (0) 70
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.19 0.05
PRECIP DURATION 2 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 670 1020
MIXING HGT(FT-AGL/MSL)2190 3360
TRANSPORT WND (MPH) W 10 NW 10
VENT RATE (KT-FT) 19710 30240
CATEGORY DAY 2 3
INVERSION 76F/10AM 7PM 72F/10AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 5 VERY POOR 21 FAIR
MAX ADI LATE 28 FAIR 3 VERY POOR 39 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-042015-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 50 40
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 83 (-5) 65 (-3) 79
RH % (24H TREND) 73 (+10) 100 (0) 68
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.13 0.10 0.04
PRECIP DURATION 4 2 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 730 980
MIXING HGT(FT-AGL/MSL)2380 3210
TRANSPORT WND (MPH) W 12 N 13
VENT RATE (KT-FT) 23800 35310
CATEGORY DAY 2 3
INVERSION 75F/10AM 7PM 71F/10AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 6 VERY POOR 18 GEN POOR
MAX ADI LATE 32 FAIR 3 VERY POOR 43 GEN GOOD
MAX LVORI EARLY 9 8 8
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-042015-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 70 60
CHANCE OF THUNDER (%) 20 50 20
TEMP (24H TREND) 86 (-4) 67 (-2) 81
RH % (24H TREND) 68 (+10) 100 (0) 74
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.13 0.15
PRECIP DURATION 1 3 2
PRECIP BEGIN 6 AM 7 PM CONTINUING
PRECIP END 4 PM CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 910 1090
MIXING HGT(FT-AGL/MSL)2980 3570
TRANSPORT WND (MPH) W 9 NW 10
VENT RATE (KT-FT) 23840 32130
CATEGORY DAY 2 3
INVERSION 77F/10AM 7PM 73F/10AM
DISPERSION 2 3
MAX ADI EARLY 14 GEN POOR 4 VERY POOR 17 GEN POOR
MAX ADI LATE 34 FAIR 3 VERY POOR 39 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 4 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-042015-
HARRISON-
INCLUDING THE CITY OF CADIZ
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 50
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 86 (-4) 66 (-3) 81
RH % (24H TREND) 69 (+12) 100 (0) 72
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.24 0.08
PRECIP DURATION 3 5 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 700 1080
MIXING HGT(FT-AGL/MSL)2310 3530
TRANSPORT WND (MPH) NW 9 NW 10
VENT RATE (KT-FT) 18480 31770
CATEGORY DAY 2 3
INVERSION 76F/10AM 7PM 72F/10AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 5 VERY POOR 15 GEN POOR
MAX ADI LATE 29 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 10 8
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-042015-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 85 (-4) 66 (-3) 80
RH % (24H TREND) 70 (+11) 100 (0) 71
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.10 0.22 0.07
PRECIP DURATION 3 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 700 1130
MIXING HGT(FT-AGL/MSL)2310 3690
TRANSPORT WND (MPH) NW 12 NW 10
VENT RATE (KT-FT) 23100 33210
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 72F/10AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 6 VERY POOR 16 GEN POOR
MAX ADI LATE 31 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-042015-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 60 50
CHANCE OF THUNDER (%) 40 50 20
TEMP (24H TREND) 88 (-3) 68 (-2) 83
RH % (24H TREND) 64 (+8) 100 (+1) 72
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.13 0.13
PRECIP DURATION 1 3 2
PRECIP BEGIN 10 AM 8 PM CONTINUING
PRECIP END 4 PM CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 850 1070
MIXING HGT(FT-AGL/MSL)2800 3500
TRANSPORT WND (MPH) W 8 W 10
VENT RATE (KT-FT) 19600 31500
CATEGORY DAY 2 3
INVERSION 78F/10AM 7PM 74F/10AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 4 VERY POOR 15 GEN POOR
MAX ADI LATE 28 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 7 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-042015-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 50
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 88 (-3) 67 (-2) 82
RH % (24H TREND) 66 (+7) 100 (0) 73
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.15 0.10
PRECIP DURATION 2 5 2
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 780 1060
MIXING HGT(FT-AGL/MSL)2560 3480
TRANSPORT WND (MPH) W 8 NW 10
VENT RATE (KT-FT) 17920 31320
CATEGORY DAY 2 3
INVERSION 78F/10AM 7PM 74F/10AM
DISPERSION 2 3
MAX ADI EARLY 13 GEN POOR 3 VERY POOR 14 GEN POOR
MAX ADI LATE 27 FAIR 3 VERY POOR 36 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-042015-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 50
CHANCE OF THUNDER (%) 50 50 20
TEMP (24H TREND) 87 (-4) 67 (-2) 82
RH % (24H TREND) 68 (+9) 100 (0) 73
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.10 0.25 0.11
PRECIP DURATION 3 5 2
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 770 1060
MIXING HGT(FT-AGL/MSL)2520 3490
TRANSPORT WND (MPH) W 9 NW 10
VENT RATE (KT-FT) 20160 31410
CATEGORY DAY 2 3
INVERSION 77F/10AM 6PM 73F/10AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 5 VERY POOR 13 GEN POOR
MAX ADI LATE 32 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-042015-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 60
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 88 (-3) 68 (-2) 83
RH % (24H TREND) 66 (+5) 100 (0) 76
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.23 0.07
PRECIP DURATION 2 5 3
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 780 1090
MIXING HGT(FT-AGL/MSL)2570 3570
TRANSPORT WND (MPH) W 7 W 10
VENT RATE (KT-FT) 15420 32130
CATEGORY DAY 2 3
INVERSION 79F/10AM 7PM 75F/10AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 3 VERY POOR 11 POOR
MAX ADI LATE 27 FAIR 3 VERY POOR 36 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-042015-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 80 60
CHANCE OF THUNDER (%) 50 40 20
TEMP (24H TREND) 88 (-4) 68 (-2) 83
RH % (24H TREND) 68 (+6) 100 (+1) 76
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.24 0.06
PRECIP DURATION 2 5 2
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 740 1050
MIXING HGT(FT-AGL/MSL)2420 3430
TRANSPORT WND (MPH) NW 12 W 10
VENT RATE (KT-FT) 24200 30870
CATEGORY DAY 2 3
INVERSION 78F/10AM 7PM 74F/10AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 3 VERY POOR 13 GEN POOR
MAX ADI LATE 33 FAIR 3 VERY POOR 41 GEN GOOD
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-042015-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 40 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 82 (-5) 63 (-4) 79
RH % (24H TREND) 78 (+4) 100 (0) 64
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR N 6
PRECIP AMOUNT 0.16 0.06 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(M-AGL/MSL) 770 1150
MIXING HGT(FT-AGL/MSL)2510 3780
TRANSPORT WND (MPH) W 10 N 9
VENT RATE (KT-FT) 22590 30240
CATEGORY DAY 2 3
INVERSION 70F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 19 GEN POOR 6 VERY POOR 17 GEN POOR
MAX ADI LATE 29 FAIR 2 VERY POOR 42 GEN GOOD
MAX LVORI EARLY 9 10 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-042015-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 30 30 0
TEMP (24H TREND) 79 (-6) 61 (-5) 78
RH % (24H TREND) 82 (+5) 100 (0) 63
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.20 0.06 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 710 1220
MIXING HGT(FT-AGL/MSL)2320 4010
TRANSPORT WND (MPH) W 12 N 9
VENT RATE (KT-FT) 23200 32080
CATEGORY DAY 2 3
INVERSION 69F/9AM 7PM 65F/9AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 5 VERY POOR 19 GEN POOR
MAX ADI LATE 29 FAIR 2 VERY POOR 45 GEN GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-042015-
FOREST-
INCLUDING THE CITY OF TIONESTA
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 30 0
CHANCE OF THUNDER (%) 30 30 0
TEMP (24H TREND) 79 (-5) 59 (-6) 77
RH % (24H TREND) 77 (+4) 100 (0) 57
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.12 0.02 0.00
PRECIP DURATION 2 1
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 2 AM
MIXING HGT(M-AGL/MSL) 750 1280
MIXING HGT(FT-AGL/MSL)2450 4190
TRANSPORT WND (MPH) W 10 N 9
VENT RATE (KT-FT) 22050 33520
CATEGORY DAY 2 3
INVERSION 68F/9AM 7PM 64F/9AM
DISPERSION 2 3
MAX ADI EARLY 17 GEN POOR 4 VERY POOR 23 FAIR
MAX ADI LATE 29 FAIR 3 VERY POOR 48 GEN GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-042015-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 50 30
CHANCE OF THUNDER (%) 40 40 30
TEMP (24H TREND) 83 (-5) 64 (-3) 80
RH % (24H TREND) 75 (+6) 100 (0) 65
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.18 0.11 0.02
PRECIP DURATION 4 2 1
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 12 PM
MIXING HGT(M-AGL/MSL) 790 1060
MIXING HGT(FT-AGL/MSL)2580 3480
TRANSPORT WND (MPH) W 10 N 9
VENT RATE (KT-FT) 23220 27840
CATEGORY DAY 2 3
INVERSION 71F/9AM 7PM 68F/9AM
DISPERSION 2 3
MAX ADI EARLY 19 GEN POOR 6 VERY POOR 19 GEN POOR
MAX ADI LATE 30 FAIR 3 VERY POOR 42 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-042015-
BUTLER-
INCLUDING THE CITY OF BUTLER
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 50 30
CHANCE OF THUNDER (%) 40 40 30
TEMP (24H TREND) 82 (-5) 63 (-4) 80
RH % (24H TREND) 79 (+7) 100 (0) 66
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.19 0.11 0.02
PRECIP DURATION 4 2 1
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 740 1140
MIXING HGT(FT-AGL/MSL)2420 3750
TRANSPORT WND (MPH) W 12 N 9
VENT RATE (KT-FT) 24200 30000
CATEGORY DAY 2 3
INVERSION 70F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 19 GEN POOR 6 VERY POOR 16 GEN POOR
MAX ADI LATE 35 FAIR 3 VERY POOR 40 FAIR
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-042015-
CLARION-
INCLUDING THE CITY OF CLARION
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 40 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 81 (-4) 61 (-4) 78
RH % (24H TREND) 78 (+6) 100 (0) 59
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.16 0.10 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 760 1260
MIXING HGT(FT-AGL/MSL)2490 4140
TRANSPORT WND (MPH) W 13 N 9
VENT RATE (KT-FT) 27390 33120
CATEGORY DAY 3 3
INVERSION 69F/9AM 7PM 68F/10AM
DISPERSION 3 3
MAX ADI EARLY 19 GEN POOR 5 VERY POOR 18 GEN POOR
MAX ADI LATE 35 FAIR 3 VERY POOR 48 GEN GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 10 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-042015-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 40 0
CHANCE OF THUNDER (%) 40 30 0
TEMP (24H TREND) 79 (-4) 60 (-5) 77
RH % (24H TREND) 78 (+4) 100 (0) 58
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.16 0.05 0.00
PRECIP DURATION 2 2
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 770 1360
MIXING HGT(FT-AGL/MSL)2540 4450
TRANSPORT WND (MPH) W 13 N 9
VENT RATE (KT-FT) 27940 35600
CATEGORY DAY 3 3
INVERSION 68F/9AM 7PM 64F/9AM
DISPERSION 3 3
MAX ADI EARLY 21 FAIR 6 VERY POOR 19 GEN POOR
MAX ADI LATE 36 FAIR 3 VERY POOR 50 GEN GOOD
MAX LVORI EARLY 8 9 9
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-042015-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 50 50
CHANCE OF THUNDER (%) 50 40 30
TEMP (24H TREND) 83 (-6) 65 (-3) 80
RH % (24H TREND) 75 (+10) 100 (0) 67
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.13 0.11 0.04
PRECIP DURATION 3 2 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 730 990
MIXING HGT(FT-AGL/MSL)2410 3240
TRANSPORT WND (MPH) W 12 NW 9
VENT RATE (KT-FT) 24100 25920
CATEGORY DAY 2 2
INVERSION 71F/9AM 7PM 71F/10AM
DISPERSION 2 2
MAX ADI EARLY 16 GEN POOR 5 VERY POOR 18 GEN POOR
MAX ADI LATE 31 FAIR 3 VERY POOR 41 GEN GOOD
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-042015-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50
CHANCE OF THUNDER (%) 50 40 30
TEMP (24H TREND) 84 (-5) 66 (-2) 80
RH % (24H TREND) 74 (+8) 100 (+1) 69
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.16 0.16 0.07
PRECIP DURATION 3 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 810 980
MIXING HGT(FT-AGL/MSL)2670 3230
TRANSPORT WND (MPH) W 12 NW 9
VENT RATE (KT-FT) 26700 25840
CATEGORY DAY 3 2
INVERSION 72F/9AM 7PM 69F/9AM
DISPERSION 3 2
MAX ADI EARLY 16 GEN POOR 6 VERY POOR 18 GEN POOR
MAX ADI LATE 36 FAIR 2 VERY POOR 30 FAIR
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-042015-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 60 30
CHANCE OF THUNDER (%) 40 40 30
TEMP (24H TREND) 83 (-4) 63 (-4) 80
RH % (24H TREND) 79 (+6) 100 (0) 65
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.21 0.15 0.03
PRECIP DURATION 4 3 1
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 770 1140
MIXING HGT(FT-AGL/MSL)2510 3750
TRANSPORT WND (MPH) W 12 N 9
VENT RATE (KT-FT) 25100 30000
CATEGORY DAY 2 3
INVERSION 70F/9AM 7PM 67F/9AM
DISPERSION 2 3
MAX ADI EARLY 19 GEN POOR 6 VERY POOR 16 GEN POOR
MAX ADI LATE 35 FAIR 2 VERY POOR 37 FAIR
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-042015-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 50
CHANCE OF THUNDER (%) 50 40 20
TEMP (24H TREND) 84 (-5) 66 (-3) 79
RH % (24H TREND) 74 (+10) 100 (+1) 74
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.14 0.20 0.12
PRECIP DURATION 4 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 780 1040
MIXING HGT(FT-AGL/MSL)2560 3430
TRANSPORT WND (MPH) NW 13 NW 12
VENT RATE (KT-FT) 28160 34300
CATEGORY DAY 3 3
INVERSION 72F/9AM 6PM 72F/10AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 5 VERY POOR 19 GEN POOR
MAX ADI LATE 36 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-042015-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 60
CHANCE OF THUNDER (%) 50 50 30
TEMP (24H TREND) 85 (-4) 66 (-2) 79
RH % (24H TREND) 72 (+7) 100 (0) 79
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.09 0.32 0.16
PRECIP DURATION 3 4 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 840 1000
MIXING HGT(FT-AGL/MSL)2760 3270
TRANSPORT WND (MPH) NW 12 W 12
VENT RATE (KT-FT) 27600 32700
CATEGORY DAY 3 3
INVERSION 72F/9AM 6PM 72F/10AM
DISPERSION 3 3
MAX ADI EARLY 20 GEN POOR 5 VERY POOR 18 GEN POOR
MAX ADI LATE 38 FAIR 3 VERY POOR 37 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-042015-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 70 50
CHANCE OF THUNDER (%) 50 40 30
TEMP (24H TREND) 84 (-5) 65 (-3) 79
RH % (24H TREND) 76 (+9) 100 (0) 71
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.20 0.19 0.08
PRECIP DURATION 3 4 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 830 870
MIXING HGT(FT-AGL/MSL)2710 2860
TRANSPORT WND (MPH) W 13 NW 8
VENT RATE (KT-FT) 29810 20020
CATEGORY DAY 3 2
INVERSION 71F/9AM 7PM 69F/9AM
DISPERSION 3 2
MAX ADI EARLY 18 GEN POOR 6 VERY POOR 17 GEN POOR
MAX ADI LATE 38 FAIR 3 VERY POOR 24 FAIR
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-042015-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 70 60
CHANCE OF THUNDER (%) 50 40 30
TEMP (24H TREND) 82 (-4) 63 (-3) 79
RH % (24H TREND) 73 (+9) 100 (0) 69
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.22 0.19 0.08
PRECIP DURATION 4 4 3
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 780 770
MIXING HGT(FT-AGL/MSL)2550 2540
TRANSPORT WND (MPH) NW 14 NW 8
VENT RATE (KT-FT) 30600 17780
CATEGORY DAY 3 2
INVERSION 70F/9AM 7PM 67F/9AM
DISPERSION 3 2
MAX ADI EARLY 23 FAIR 6 VERY POOR 18 GEN POOR
MAX ADI LATE 40 FAIR 4 VERY POOR 24 FAIR
MAX LVORI EARLY 8 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-042015-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 60
CHANCE OF THUNDER (%) 50 50 30
TEMP (24H TREND) 84 (-5) 66 (-3) 79
RH % (24H TREND) 73 (+10) 100 (0) 77
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.17 0.25 0.17
PRECIP DURATION 3 4 4
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 830 950
MIXING HGT(FT-AGL/MSL)2740 3110
TRANSPORT WND (MPH) W 12 W 9
VENT RATE (KT-FT) 27400 24880
CATEGORY DAY 3 2
INVERSION 72F/9AM 6PM 72F/10AM
DISPERSION 3 2
MAX ADI EARLY 20 GEN POOR 5 VERY POOR 15 GEN POOR
MAX ADI LATE 38 FAIR 3 VERY POOR 30 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 4 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-042015-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 70
CHANCE OF THUNDER (%) 50 50 30
TEMP (24H TREND) 83 (-4) 63 (-4) 78
RH % (24H TREND) 71 (+8) 100 (0) 73
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.19 0.23 0.13
PRECIP DURATION 4 4 3
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 830 960
MIXING HGT(FT-AGL/MSL)2710 3160
TRANSPORT WND (MPH) W 13 NW 10
VENT RATE (KT-FT) 29810 28440
CATEGORY DAY 3 3
INVERSION 70F/9AM 6PM 69F/10AM
DISPERSION 3 3
MAX ADI EARLY 24 FAIR 4 VERY POOR 20 GEN POOR
MAX ADI LATE 41 GEN GOOD 4 VERY POOR 35 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-042015-
INDIANA-
INCLUDING THE CITY OF INDIANA
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 60 30
CHANCE OF THUNDER (%) 40 30 30
TEMP (24H TREND) 82 (-4) 62 (-5) 79
RH % (24H TREND) 78 (+6) 100 (0) 64
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.20 0.18 0.03
PRECIP DURATION 4 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 800 1090
MIXING HGT(FT-AGL/MSL)2640 3580
TRANSPORT WND (MPH) W 13 NW 9
VENT RATE (KT-FT) 29040 28640
CATEGORY DAY 3 3
INVERSION 69F/9AM 7PM 67F/9AM
DISPERSION 3 3
MAX ADI EARLY 21 FAIR 6 VERY POOR 17 GEN POOR
MAX ADI LATE 40 FAIR 3 VERY POOR 34 FAIR
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-042015-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 70 40
CHANCE OF THUNDER (%) 40 30 30
TEMP (24H TREND) 81 (-4) 63 (-4) 78
RH % (24H TREND) 75 (+6) 100 (0) 66
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.19 0.21 0.03
PRECIP DURATION 4 4 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 790 880
MIXING HGT(FT-AGL/MSL)2600 2880
TRANSPORT WND (MPH) W 15 N 8
VENT RATE (KT-FT) 33800 20160
CATEGORY DAY 3 2
INVERSION 69F/9AM 7PM 67F/9AM
DISPERSION 3 2
MAX ADI EARLY 24 FAIR 6 VERY POOR 16 GEN POOR
MAX ADI LATE 42 GEN GOOD 3 VERY POOR 27 FAIR
MAX LVORI EARLY 8 9 8
MAX LVORI LATE 4 9 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-042015-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50
CHANCE OF THUNDER (%) 40 40 20
TEMP (24H TREND) 84 (-5) 66 (-2) 80
RH % (24H TREND) 74 (+10) 100 (0) 70
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.12 0.14 0.07
PRECIP DURATION 3 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 730 1080
MIXING HGT(FT-AGL/MSL)2390 3530
TRANSPORT WND (MPH) NW 12 NW 10
VENT RATE (KT-FT) 23900 31770
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 71F/10AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 5 VERY POOR 20 GEN POOR
MAX ADI LATE 31 FAIR 3 VERY POOR 36 FAIR
MAX LVORI EARLY 9 9 9
MAX LVORI LATE 3 10 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-042015-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 50
CHANCE OF THUNDER (%) 50 40 20
TEMP (24H TREND) 85 (-5) 67 (-3) 81
RH % (24H TREND) 71 (+12) 100 (+1) 72
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.21 0.09
PRECIP DURATION 4 3 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 730 1100
MIXING HGT(FT-AGL/MSL)2390 3600
TRANSPORT WND (MPH) NW 12 NW 10
VENT RATE (KT-FT) 23900 32400
CATEGORY DAY 2 3
INVERSION 72F/9AM 7PM 72F/10AM
DISPERSION 2 3
MAX ADI EARLY 15 GEN POOR 6 VERY POOR 19 GEN POOR
MAX ADI LATE 32 FAIR 3 VERY POOR 36 FAIR
MAX LVORI EARLY 9 8 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-042015-
OHIO-
INCLUDING THE CITY OF WHEELING
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 50
CHANCE OF THUNDER (%) 50 40 20
TEMP (24H TREND) 85 (-4) 67 (-2) 81
RH % (24H TREND) 71 (+11) 100 (0) 74
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.29 0.12
PRECIP DURATION 4 3 2
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 760 1110
MIXING HGT(FT-AGL/MSL)2500 3650
TRANSPORT WND (MPH) NW 12 NW 12
VENT RATE (KT-FT) 25000 36500
CATEGORY DAY 2 3
INVERSION 73F/9AM 7PM 72F/10AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 5 VERY POOR 18 GEN POOR
MAX ADI LATE 34 FAIR 3 VERY POOR 41 GEN GOOD
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-042015-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 50
CHANCE OF THUNDER (%) 50 50 30
TEMP (24H TREND) 87 (-3) 68 (-1) 82
RH % (24H TREND) 70 (+5) 100 (0) 79
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.29 0.10
PRECIP DURATION 2 5 2
PRECIP BEGIN 12 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 760 1040
MIXING HGT(FT-AGL/MSL)2490 3400
TRANSPORT WND (MPH) W 9 W 12
VENT RATE (KT-FT) 19920 34000
CATEGORY DAY 2 3
INVERSION 77F/10AM 7PM 73F/10AM
DISPERSION 2 3
MAX ADI EARLY 16 GEN POOR 5 VERY POOR 15 GEN POOR
MAX ADI LATE 32 FAIR 3 VERY POOR 39 FAIR
MAX LVORI EARLY 9 8 8
MAX LVORI LATE 3 9 5
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-042015-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 80 50
CHANCE OF THUNDER (%) 50 40 30
TEMP (24H TREND) 87 (-3) 67 (-3) 81
RH % (24H TREND) 71 (+4) 100 (0) 82
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.21 0.09
PRECIP DURATION 2 5 2
PRECIP BEGIN 12 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 900 1010
MIXING HGT(FT-AGL/MSL)2940 3300
TRANSPORT WND (MPH) NW 12 W 10
VENT RATE (KT-FT) 29400 29700
CATEGORY DAY 3 3
INVERSION 77F/10AM 7PM 73F/10AM
DISPERSION 3 3
MAX ADI EARLY 16 GEN POOR 4 VERY POOR 14 GEN POOR
MAX ADI LATE 40 FAIR 3 VERY POOR 41 GEN GOOD
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 9 5
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-042015-
MARION-
INCLUDING THE CITY OF FAIRMONT
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 60
CHANCE OF THUNDER (%) 50 50 40
TEMP (24H TREND) 85 (-4) 66 (-3) 79
RH % (24H TREND) 74 (+5) 100 (0) 85
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.23 0.17
PRECIP DURATION 2 5 2
PRECIP BEGIN 12 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 940 960
MIXING HGT(FT-AGL/MSL)3070 3150
TRANSPORT WND (MPH) NW 13 W 10
VENT RATE (KT-FT) 33770 28350
CATEGORY DAY 3 3
INVERSION 72F/9AM 6PM 72F/10AM
DISPERSION 3 3
MAX ADI EARLY 16 GEN POOR 4 VERY POOR 16 GEN POOR
MAX ADI LATE 45 GEN GOOD 3 VERY POOR 32 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 3 10 5
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-042015-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 60
CHANCE OF THUNDER (%) 60 50 30
TEMP (24H TREND) 85 (-4) 66 (-3) 79
RH % (24H TREND) 73 (+5) 100 (+1) 81
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.28 0.20
PRECIP DURATION 3 5 4
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 900 930
MIXING HGT(FT-AGL/MSL)2960 3040
TRANSPORT WND (MPH) W 12 W 10
VENT RATE (KT-FT) 29600 27360
CATEGORY DAY 3 3
INVERSION 72F/9AM 6PM 72F/10AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 4 VERY POOR 16 GEN POOR
MAX ADI LATE 41 GEN GOOD 3 VERY POOR 32 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 4 9 5
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-042015-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 70
CHANCE OF THUNDER (%) 60 50 40
TEMP (24H TREND) 82 (-4) 64 (-4) 77
RH % (24H TREND) 76 (+9) 100 (+1) 83
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.16 0.30 0.21
PRECIP DURATION 3 5 4
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 810 940
MIXING HGT(FT-AGL/MSL)2660 3090
TRANSPORT WND (MPH) W 12 W 10
VENT RATE (KT-FT) 26600 27810
CATEGORY DAY 3 3
INVERSION 70F/9AM 6PM 69F/10AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 3 VERY POOR 16 GEN POOR
MAX ADI LATE 39 FAIR 3 VERY POOR 33 FAIR
MAX LVORI EARLY 9 9 8
MAX LVORI LATE 4 9 5
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-042015-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 70 70
CHANCE OF THUNDER (%) 50 50 40
TEMP (24H TREND) 84 (-3) 64 (-3) 79
RH % (24H TREND) 72 (+6) 100 (+2) 79
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.17 0.26 0.19
PRECIP DURATION 4 5 4
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 900 1020
MIXING HGT(FT-AGL/MSL)2960 3330
TRANSPORT WND (MPH) W 14 W 10
VENT RATE (KT-FT) 35520 29970
CATEGORY DAY 3 3
INVERSION 71F/9AM 6PM 70F/10AM
DISPERSION 3 3
MAX ADI EARLY 23 FAIR 4 VERY POOR 18 GEN POOR
MAX ADI LATE 46 GEN GOOD 3 VERY POOR 36 FAIR
MAX LVORI EARLY 7 9 8
MAX LVORI LATE 4 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-042015-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 70
CHANCE OF THUNDER (%) 50 50 40
TEMP (24H TREND) 82 (-3) 64 (-3) 77
RH % (24H TREND) 73 (+1) 100 (+1) 82
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.18 0.23 0.19
PRECIP DURATION 2 4 5
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 940 850
MIXING HGT(FT-AGL/MSL)3070 2790
TRANSPORT WND (MPH) W 15 W 12
VENT RATE (KT-FT) 39910 27900
CATEGORY DAY 3 3
INVERSION 69F/9AM 7PM 69F/10AM
DISPERSION 3 3
MAX ADI EARLY 29 FAIR 5 VERY POOR 21 FAIR
MAX ADI LATE 51 GEN GOOD 4 VERY POOR 37 FAIR
MAX LVORI EARLY 7 9 8
MAX LVORI LATE 4 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-042015-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 70
CHANCE OF THUNDER (%) 50 50 40
TEMP (24H TREND) 85 (-2) 65 (-3) 79
RH % (24H TREND) 67 (0) 100 (+5) 78
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.10 0.24 0.25
PRECIP DURATION 2 2 5
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 970 810
MIXING HGT(FT-AGL/MSL)3180 2650
TRANSPORT WND (MPH) W 15 W 13
VENT RATE (KT-FT) 41340 29150
CATEGORY DAY 3 3
INVERSION 70F/9AM 7PM 69F/10AM
DISPERSION 3 3
MAX ADI EARLY 33 FAIR 4 VERY POOR 20 GEN POOR
MAX ADI LATE 55 GEN GOOD 3 VERY POOR 37 FAIR
MAX LVORI EARLY 6 9 8
MAX LVORI LATE 3 9 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-042015-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1215 AM EDT FRI SEP 4 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 50 70
CHANCE OF THUNDER (%) 40 40 40
TEMP (24H TREND) 80 (-2) 61 (-3) 75
RH % (24H TREND) 69 (-2) 100 (+3) 84
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 G20 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.16 0.20
PRECIP DURATION 1 2 4
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 1020 780
MIXING HGT(FT-AGL/MSL)3340 2560
TRANSPORT WND (MPH) NW 18 W 15
VENT RATE (KT-FT) 53440 33280
CATEGORY DAY 4 3
INVERSION 69F/9AM 7PM 66F/9AM
DISPERSION 4 3
MAX ADI EARLY 47 GEN GOOD 8 POOR 27 FAIR
MAX ADI LATE 71 GOOD 7 POOR 41 GEN GOOD
MAX LVORI EARLY 6 7 8
MAX LVORI LATE 3 8 4
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 50S. HIGHS IN THE UPPER
70S. NORTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER
70S. NORTHEAST WINDS AROUND 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS AROUND 80.
SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. HIGHS IN THE
LOWER 80S. SOUTHWEST WINDS 10 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 60S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
10 TO 15 MPH.
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