742
FNUS51 KPBZ 211720
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
120 PM EDT TUE APR 21 2026
DISCUSSION
DRY CONDITIONS TODAY WITH MINIMUM RELATIVE HUMIDITY BETWEEN
25%-35% WITH GUSTS UP TO 20-25 MPH. TONIGHT, WE WILL HAVE LIGHT
RAIN SHOWERS MOVE THROUGH THE AREA.
DURING THE DAY TOMORROW, WIND WILL BE SLIGHTLY WEAKER WITH
WESTERLY GUSTS UP TO 15-20 MPH AND MINIMUM RELATIVE HUMIDITY
GREATER THAN 45%. WEDNESDAY NIGHT INTO THURSDAY, WINDS WILL
CONTINUE EASE AND TEMPERATURES WILL WARM. DRY CONDITIONS FORECAST
FOR THE DAYTIME ON THURSDAY AND FRIDAY. CURRENTLY, MINIMUM
RELATIVE HUMIDITY ON THOSE DAYS ARE FORECAST TO REMAIN GREATER
THAN 30%-35%.
OHZ039-220830-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 40 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 53 (+22) 70 (+1) 48 77
RH % (24H TREND) 84 (+13) 59 (+30) 93 42
WIND 20FT/EARLY(MPH) SW 7 G17 W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 7 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.02 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1390 1550
MIXING HGT(FT-AGL/MSL) 4550 5090
TRANSPORT WND (MPH) NW 13 W 12
VENT RATE (KT-FT) 45590 50900
CATEGORY DAY 4 3
INVERSION 7PM 57F/9AM 8PM 61F/10AM
DISPERSION 5 3
MAX ADI EARLY 33 FAIR 28 FAIR 5 VERY POOR 15 GEN POOR
MAX ADI LATE 14 GEN POOR 66 GOOD 2 VERY POOR 65 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-220830-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 53 (+22) 69 (+2) 47 77
RH % (24H TREND) 84 (+19) 58 (+29) 92 42
WIND 20FT/EARLY(MPH) SW 7 W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 8 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.03 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1300 1380
MIXING HGT(FT-AGL/MSL) 4280 4540
TRANSPORT WND (MPH) NW 12 W 10
VENT RATE (KT-FT) 54800 40860
CATEGORY DAY 3 3
INVERSION 7PM 57F/9AM 8PM 60F/10AM
DISPERSION 5 3
MAX ADI EARLY 30 FAIR 31 FAIR 6 VERY POOR 21 FAIR
MAX ADI LATE 14 GEN POOR 61 GOOD 2 VERY POOR 59 GEN GOOD
MAX LVORI EARLY 2 4 4 6
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-220830-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 70 40 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 53 (+23) 69 (+3) 46 77
RH % (24H TREND) 84 (+19) 54 (+25) 92 39
WIND 20FT/EARLY(MPH) S 7 W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 7 NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.13 0.03 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1400 1400
MIXING HGT(FT-AGL/MSL) 4580 4590
TRANSPORT WND (MPH) NW 13 W 10
VENT RATE (KT-FT) 56640 41310
CATEGORY DAY 4 3
INVERSION 7PM 57F/9AM 8PM 61F/10AM
DISPERSION 5 3
MAX ADI EARLY 27 FAIR 31 FAIR 8 POOR 20 GEN POOR
MAX ADI LATE 15 GEN POOR 64 GOOD 2 VERY POOR 56 GEN GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-220830-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 40 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 53 (+21) 70 (0) 49 78
RH % (24H TREND) 86 (+22) 58 (+28) 93 42
WIND 20FT/EARLY(MPH) SW 7 G17 W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.01 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1460 1680
MIXING HGT(FT-AGL/MSL) 4780 5530
TRANSPORT WND (MPH) NW 10 W 10
VENT RATE (KT-FT) 47540 49770
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 62F/10AM
DISPERSION 5 4
MAX ADI EARLY 35 FAIR 35 FAIR 5 VERY POOR 14 GEN POOR
MAX ADI LATE 12 POOR 52 GEN GOOD 3 VERY POOR 74 GOOD
MAX LVORI EARLY 2 4 4 6
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-220830-
HARRISON-
INCLUDING THE CITY OF CADIZ
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 53 (+22) 70 (+2) 48 78
RH % (24H TREND) 81 (+10) 57 (+31) 93 40
WIND 20FT/EARLY(MPH) SW 7 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 8 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.04 0.00 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1330 1610
MIXING HGT(FT-AGL/MSL) 4360 5280
TRANSPORT WND (MPH) NW 13 W 12
VENT RATE (KT-FT) 48760 52800
CATEGORY DAY 3 4
INVERSION 7PM 57F/9AM 8PM 61F/10AM
DISPERSION 5 4
MAX ADI EARLY 16 GEN POOR 27 FAIR 6 VERY POOR 21 FAIR
MAX ADI LATE 14 GEN POOR 53 GEN GOOD 3 VERY POOR 73 GOOD
MAX LVORI EARLY 2 4 4 6
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-220830-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 60 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 53 (+24) 69 (+2) 48 77
RH % (24H TREND) 82 (+17) 56 (+30) 92 38
WIND 20FT/EARLY(MPH) SW 7 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 7 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.08 0.04 0.00 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1320 1560
MIXING HGT(FT-AGL/MSL) 4340 5110
TRANSPORT WND (MPH) NW 13 W 10
VENT RATE (KT-FT) 61300 45990
CATEGORY DAY 3 3
INVERSION 7PM 56F/9AM 8PM 61F/10AM
DISPERSION 5 3
MAX ADI EARLY 28 FAIR 30 FAIR 7 POOR 23 FAIR
MAX ADI LATE 13 GEN POOR 52 GEN GOOD 2 VERY POOR 64 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-220830-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 53 (+20) 71 (0) 50 78
RH % (24H TREND) 83 (+10) 56 (+28) 93 40
WIND 20FT/EARLY(MPH) SW 7 G18 W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.03 0.00 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1410 1940
MIXING HGT(FT-AGL/MSL) 4610 6370
TRANSPORT WND (MPH) NW 12 W 10
VENT RATE (KT-FT) 47930 57330
CATEGORY DAY 3 4
INVERSION 8PM 58F/9AM 8PM 63F/10AM
DISPERSION 5 4
MAX ADI EARLY 34 FAIR 39 FAIR 6 VERY POOR 16 GEN POOR
MAX ADI LATE 12 POOR 57 GEN GOOD 3 VERY POOR 80 GOOD
MAX LVORI EARLY 2 4 4 6
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-220830-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 53 (+21) 71 (+1) 49 79
RH % (24H TREND) 84 (+17) 57 (+30) 93 40
WIND 20FT/EARLY(MPH) SW 6 SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.05 0.00 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1320 1680
MIXING HGT(FT-AGL/MSL) 4320 5500
TRANSPORT WND (MPH) NW 10 W 10
VENT RATE (KT-FT) 51970 49500
CATEGORY DAY 3 4
INVERSION 7PM 57F/9AM 8PM 62F/10AM
DISPERSION 5 4
MAX ADI EARLY 17 GEN POOR 34 FAIR 6 VERY POOR 15 GEN POOR
MAX ADI LATE 11 POOR 48 GEN GOOD 3 VERY POOR 70 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-220830-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 70 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 53 (+21) 69 (0) 49 78
RH % (24H TREND) 84 (+17) 59 (+34) 94 39
WIND 20FT/EARLY(MPH) SW 6 SW 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 8 G17 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.06 0.00 0.00
PRECIP DURATION 4 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1250 1690
MIXING HGT(FT-AGL/MSL) 4110 5540
TRANSPORT WND (MPH) NW 13 W 12
VENT RATE (KT-FT) 59120 55400
CATEGORY DAY 3 4
INVERSION 7PM 56F/9AM 8PM 62F/10AM
DISPERSION 5 4
MAX ADI EARLY 15 GEN POOR 33 FAIR 7 POOR 15 GEN POOR
MAX ADI LATE 14 GEN POOR 50 GEN GOOD 3 VERY POOR 77 GOOD
MAX LVORI EARLY 2 4 4 6
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-220830-
NOBLE-
INCLUDING THE CITY OF CALDWELL
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 60 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 52 (+21) 70 (-1) 50 79
RH % (24H TREND) 84 (+4) 59 (+33) 96 40
WIND 20FT/EARLY(MPH) SW 6 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.05 0.00 0.00
PRECIP DURATION 4 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1270 1990
MIXING HGT(FT-AGL/MSL) 4150 6520
TRANSPORT WND (MPH) W 13 W 10
VENT RATE (KT-FT) 45360 58680
CATEGORY DAY 3 4
INVERSION 8PM 57F/9AM 8PM 63F/10AM
DISPERSION 5 4
MAX ADI EARLY 32 FAIR 37 FAIR 7 POOR 21 FAIR
MAX ADI LATE 10 POOR 48 GEN GOOD 3 VERY POOR 83 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-220830-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 60 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 53 (+21) 70 (0) 50 79
RH % (24H TREND) 83 (+6) 61 (+37) 95 40
WIND 20FT/EARLY(MPH) SW 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.06 0.00 0.00
PRECIP DURATION 3 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1300 1690
MIXING HGT(FT-AGL/MSL) 4260 5540
TRANSPORT WND (MPH) W 13 W 8
VENT RATE (KT-FT) 45460 38780
CATEGORY DAY 3 3
INVERSION 7PM 56F/9AM 8PM 63F/10AM
DISPERSION 5 3
MAX ADI EARLY 31 FAIR 36 FAIR 7 POOR 20 GEN POOR
MAX ADI LATE 10 POOR 50 GEN GOOD 3 VERY POOR 59 GEN GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-220830-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 70 40 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 50 (+22) 69 (+5) 45 75
RH % (24H TREND) 89 (+13) 55 (+23) 93 41
WIND 20FT/EARLY(MPH) S 7 W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.01 0.00 0.00
PRECIP DURATION 5 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1440 1300
MIXING HGT(FT-AGL/MSL) 4720 4270
TRANSPORT WND (MPH) NW 14 W 9
VENT RATE (KT-FT) 59410 34160
CATEGORY DAY 4 3
INVERSION 7PM 59F/10AM 8PM 58F/10AM
DISPERSION 5 3
MAX ADI EARLY 26 FAIR 20 GEN POOR 7 POOR 20 GEN POOR
MAX ADI LATE 10 POOR 77 GOOD 2 VERY POOR 48 GEN GOOD
MAX LVORI EARLY 3 5 5 7
MAX LVORI LATE 4 3 7 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-220830-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 70 30 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 48 (+22) 69 (+7) 44 75
RH % (24H TREND) 91 (+15) 54 (+22) 95 38
WIND 20FT/EARLY(MPH) S 5 LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.01 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1570 1570
MIXING HGT(FT-AGL/MSL) 5150 5160
TRANSPORT WND (MPH) NW 14 NW 12
VENT RATE (KT-FT) 75410 51600
CATEGORY DAY 4 3
INVERSION 7PM 57F/10AM 8PM 57F/10AM
DISPERSION 5 3
MAX ADI EARLY 13 GEN POOR 16 GEN POOR 8 POOR 33 FAIR
MAX ADI LATE 9 POOR 79 GOOD 2 VERY POOR 71 GOOD
MAX LVORI EARLY 3 5 5 7
MAX LVORI LATE 5 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-220830-
FOREST-
INCLUDING THE CITY OF TIONESTA
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 60 30 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 46 (+22) 68 (+9) 43 74
RH % (24H TREND) 91 (+10) 51 (+20) 97 34
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.02 0.01 0.00 0.00
PRECIP DURATION 2 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1660 1730
MIXING HGT(FT-AGL/MSL) 5440 5660
TRANSPORT WND (MPH) NW 15 NW 15
VENT RATE (KT-FT) 76750 73580
CATEGORY DAY 4 4
INVERSION 7PM 58F/11AM 8PM 51F/9AM
DISPERSION 5 4
MAX ADI EARLY 9 POOR 13 GEN POOR 8 POOR 42 GEN GOOD
MAX ADI LATE 9 POOR 93 GOOD 3 VERY POOR 96 GOOD
MAX LVORI EARLY 3 5 5 7
MAX LVORI LATE 5 3 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-220830-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 70 40 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 51 (+23) 71 (+5) 45 77
RH % (24H TREND) 87 (+10) 53 (+24) 93 38
WIND 20FT/EARLY(MPH) S 5 W 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.01 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1490 1420
MIXING HGT(FT-AGL/MSL) 4880 4650
TRANSPORT WND (MPH) NW 14 W 10
VENT RATE (KT-FT) 64270 41850
CATEGORY DAY 4 3
INVERSION 7PM 59F/10AM 8PM 60F/10AM
DISPERSION 5 3
MAX ADI EARLY 25 FAIR 25 FAIR 8 POOR 20 GEN POOR
MAX ADI LATE 9 POOR 78 GOOD 3 VERY POOR 56 GEN GOOD
MAX LVORI EARLY 3 4 5 7
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-220830-
BUTLER-
INCLUDING THE CITY OF BUTLER
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 48 (+22) 69 (+5) 44 76
RH % (24H TREND) 91 (+10) 60 (+30) 97 42
WIND 20FT/EARLY(MPH) S 5 SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.02 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1450 1370
MIXING HGT(FT-AGL/MSL) 4750 4490
TRANSPORT WND (MPH) NW 14 W 12
VENT RATE (KT-FT) 72110 44900
CATEGORY DAY 4 3
INVERSION 7PM 58F/10AM 8PM 58F/10AM
DISPERSION 5 3
MAX ADI EARLY 25 FAIR 22 FAIR 8 POOR 24 FAIR
MAX ADI LATE 9 POOR 66 GOOD 3 VERY POOR 61 GOOD
MAX LVORI EARLY 3 5 5 8
MAX LVORI LATE 5 3 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-220830-
CLARION-
INCLUDING THE CITY OF CLARION
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 70 40 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 47 (+22) 69 (+8) 44 75
RH % (24H TREND) 89 (+12) 54 (+23) 96 37
WIND 20FT/EARLY(MPH) S 5 LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.02 0.00 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1660 1690
MIXING HGT(FT-AGL/MSL) 5440 5530
TRANSPORT WND (MPH) NW 15 W 14
VENT RATE (KT-FT) 75110 66360
CATEGORY DAY 4 4
INVERSION 7PM 57F/10AM 8PM 57F/10AM
DISPERSION 5 4
MAX ADI EARLY 10 POOR 17 GEN POOR 9 POOR 35 FAIR
MAX ADI LATE 8 POOR 88 GOOD 3 VERY POOR 92 GOOD
MAX LVORI EARLY 3 5 5 7
MAX LVORI LATE 5 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-220830-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE PRECIP (%) 60 50 0 0
CHANCE OF THUNDER (%) 20 0 0 0
TEMP (24H TREND) 46 (+20) 67 (+8) 44 73
RH % (24H TREND) 85 (+16) 53 (+25) 94 35
WIND 20FT/EARLY(MPH) S 5 SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.02 0.03 0.00 0.00
PRECIP DURATION 2 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1700 1720
MIXING HGT(FT-AGL/MSL) 5570 5650
TRANSPORT WND (MPH) NW 15 NW 16
VENT RATE (KT-FT) 79130 79100
CATEGORY DAY 4 4
INVERSION 7PM 57F/11AM 8PM 56F/10AM
DISPERSION 5 4
MAX ADI EARLY 9 POOR 18 GEN POOR 9 POOR 40 FAIR
MAX ADI LATE 9 POOR 90 GOOD 3 VERY POOR 106 VERY GOOD
MAX LVORI EARLY 3 4 5 6
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-220830-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 53 (+24) 70 (+4) 46 77
RH % (24H TREND) 84 (+13) 55 (+28) 92 37
WIND 20FT/EARLY(MPH) S 5 SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.13 0.04 0.00 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1360 1580
MIXING HGT(FT-AGL/MSL) 4450 5180
TRANSPORT WND (MPH) NW 13 W 10
VENT RATE (KT-FT) 56050 46620
CATEGORY DAY 4 3
INVERSION 7PM 57F/9AM 8PM 60F/10AM
DISPERSION 5 3
MAX ADI EARLY 26 FAIR 27 FAIR 8 POOR 20 GEN POOR
MAX ADI LATE 10 POOR 59 GEN GOOD 2 VERY POOR 72 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-220830-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 60 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 53 (+23) 69 (+3) 48 77
RH % (24H TREND) 85 (+14) 56 (+30) 95 37
WIND 20FT/EARLY(MPH) S 6 SW 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 8 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.10 0.08 0.00 0.00
PRECIP DURATION 3 6
PRECIP BEGIN 10 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1290 1600
MIXING HGT(FT-AGL/MSL) 4230 5240
TRANSPORT WND (MPH) NW 13 W 13
VENT RATE (KT-FT) 46630 57640
CATEGORY DAY 3 4
INVERSION 7PM 57F/9AM 8PM 60F/10AM
DISPERSION 5 4
MAX ADI EARLY 26 FAIR 31 FAIR 11 POOR 18 GEN POOR
MAX ADI LATE 13 GEN POOR 55 GEN GOOD 3 VERY POOR 78 GOOD
MAX LVORI EARLY 2 4 4 8
MAX LVORI LATE 4 3 8 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-220830-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 49 (+23) 69 (+6) 45 77
RH % (24H TREND) 89 (+8) 59 (+29) 99 40
WIND 20FT/EARLY(MPH) S 5 SW 5 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.04 0.00 0.00
PRECIP DURATION 2 2
PRECIP BEGIN 9 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1370 1390
MIXING HGT(FT-AGL/MSL) 4500 4560
TRANSPORT WND (MPH) NW 13 W 13
VENT RATE (KT-FT) 74400 50160
CATEGORY DAY 4 4
INVERSION 7PM 57F/10AM 8PM 58F/10AM
DISPERSION 5 4
MAX ADI EARLY 9 POOR 21 FAIR 8 POOR 26 FAIR
MAX ADI LATE 9 POOR 56 GEN GOOD 3 VERY POOR 67 GOOD
MAX LVORI EARLY 3 5 5 9
MAX LVORI LATE 5 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-220830-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 60 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 52 (+22) 68 (+2) 48 77
RH % (24H TREND) 83 (+11) 59 (+33) 94 39
WIND 20FT/EARLY(MPH) SW 6 SW 8 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 7 W 8 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.07 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1220 1660
MIXING HGT(FT-AGL/MSL) 3990 5440
TRANSPORT WND (MPH) NW 14 W 13
VENT RATE (KT-FT) 54140 59840
CATEGORY DAY 3 4
INVERSION 7PM 56F/9AM 8PM 61F/10AM
DISPERSION 5 4
MAX ADI EARLY 25 FAIR 32 FAIR 9 POOR 22 FAIR
MAX ADI LATE 13 GEN POOR 55 GEN GOOD 3 VERY POOR 80 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-220830-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 70 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 52 (+22) 67 (0) 49 77
RH % (24H TREND) 81 (+4) 64 (+39) 96 41
WIND 20FT/EARLY(MPH) SW 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.09 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1230 1880
MIXING HGT(FT-AGL/MSL) 4050 6170
TRANSPORT WND (MPH) W 13 W 14
VENT RATE (KT-FT) 35200 74040
CATEGORY DAY 3 4
INVERSION 7PM 55F/8AM 8PM 61F/10AM
DISPERSION 5 4
MAX ADI EARLY 11 POOR 38 FAIR 8 POOR 22 FAIR
MAX ADI LATE 12 POOR 49 GEN GOOD 3 VERY POOR 98 GOOD
MAX LVORI EARLY 2 4 5 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-220830-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 70 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 50 (+21) 69 (+4) 46 76
RH % (24H TREND) 87 (+8) 61 (+33) 99 39
WIND 20FT/EARLY(MPH) S 6 SW 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 8 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.12 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1120 1340
MIXING HGT(FT-AGL/MSL) 3670 4400
TRANSPORT WND (MPH) W 13 W 13
VENT RATE (KT-FT) 53830 48400
CATEGORY DAY 3 4
INVERSION 7PM 56F/9AM 8PM 55F/9AM
DISPERSION 5 4
MAX ADI EARLY 21 FAIR 29 FAIR 12 POOR 21 FAIR
MAX ADI LATE 13 GEN POOR 47 GEN GOOD 3 VERY POOR 63 GOOD
MAX LVORI EARLY 3 4 5 9
MAX LVORI LATE 4 3 9 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-220830-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 70 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 49 (+21) 67 (+4) 48 76
RH % (24H TREND) 83 (+7) 60 (+35) 93 36
WIND 20FT/EARLY(MPH) S 5 SW 7 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 G18 W 7 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.20 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1080 1280
MIXING HGT(FT-AGL/MSL) 3540 4190
TRANSPORT WND (MPH) W 15 W 14
VENT RATE (KT-FT) 44270 50280
CATEGORY DAY 3 3
INVERSION 7PM 54F/8AM 7PM 54F/9AM
DISPERSION 5 3
MAX ADI EARLY 12 POOR 32 FAIR 9 POOR 25 FAIR
MAX ADI LATE 13 GEN POOR 48 GEN GOOD 3 VERY POOR 68 GOOD
MAX LVORI EARLY 2 3 5 6
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-220830-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 70 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 52 (+23) 66 (0) 48 76
RH % (24H TREND) 82 (+8) 64 (+38) 97 41
WIND 20FT/EARLY(MPH) S 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.14 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 1 AM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1110 1640
MIXING HGT(FT-AGL/MSL) 3640 5390
TRANSPORT WND (MPH) W 14 W 13
VENT RATE (KT-FT) 37760 59290
CATEGORY DAY 3 4
INVERSION 7PM 55F/8AM 8PM 56F/9AM
DISPERSION 5 4
MAX ADI EARLY 11 POOR 37 FAIR 8 POOR 21 FAIR
MAX ADI LATE 10 POOR 46 GEN GOOD 3 VERY POOR 75 GOOD
MAX LVORI EARLY 3 4 5 7
MAX LVORI LATE 4 3 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-220830-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 80 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 50 (+22) 63 (0) 48 74
RH % (24H TREND) 82 (+8) 63 (+37) 95 40
WIND 20FT/EARLY(MPH) LGT/VAR SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.09 0.27 0.00 0.00
PRECIP DURATION 2 10
PRECIP BEGIN 1 AM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 890 1420
MIXING HGT(FT-AGL/MSL) 2920 4650
TRANSPORT WND (MPH) W 14 W 14
VENT RATE (KT-FT) 39510 55800
CATEGORY DAY 3 4
INVERSION 7PM 53F/8AM 7PM 54F/9AM
DISPERSION 5 4
MAX ADI EARLY 11 POOR 33 FAIR 8 POOR 24 FAIR
MAX ADI LATE 12 POOR 41 GEN GOOD 3 VERY POOR 75 GOOD
MAX LVORI EARLY 2 4 6 6
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-220830-
INDIANA-
INCLUDING THE CITY OF INDIANA
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 60 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 49 (+22) 67 (+5) 45 75
RH % (24H TREND) 86 (+7) 61 (+33) 98 40
WIND 20FT/EARLY(MPH) S 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.08 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 9 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1180 1450
MIXING HGT(FT-AGL/MSL) 3860 4740
TRANSPORT WND (MPH) NW 14 W 14
VENT RATE (KT-FT) 66890 56880
CATEGORY DAY 3 4
INVERSION 7PM 55F/9AM 8PM 57F/10AM
DISPERSION 5 4
MAX ADI EARLY 11 POOR 21 FAIR 8 POOR 31 FAIR
MAX ADI LATE 10 POOR 60 GEN GOOD 3 VERY POOR 79 GOOD
MAX LVORI EARLY 3 4 5 8
MAX LVORI LATE 4 3 8 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-220830-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 60 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 49 (+22) 67 (+5) 47 75
RH % (24H TREND) 81 (+5) 61 (+35) 94 38
WIND 20FT/EARLY(MPH) S 5 SW 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.13 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1040 1330
MIXING HGT(FT-AGL/MSL) 3410 4370
TRANSPORT WND (MPH) W 15 NW 16
VENT RATE (KT-FT) 39560 61180
CATEGORY DAY 3 4
INVERSION 7PM 54F/9AM 8PM 53F/9AM
DISPERSION 5 4
MAX ADI EARLY 12 POOR 24 FAIR 11 POOR 33 FAIR
MAX ADI LATE 11 POOR 51 GEN GOOD 3 VERY POOR 81 GOOD
MAX LVORI EARLY 2 4 5 6
MAX LVORI LATE 4 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-220830-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 50 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 54 (+26) 69 (+2) 48 77
RH % (24H TREND) 81 (+7) 55 (+29) 90 38
WIND 20FT/EARLY(MPH) S 6 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.11 0.04 0.00 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 10 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1350 1520
MIXING HGT(FT-AGL/MSL) 4420 4990
TRANSPORT WND (MPH) NW 13 W 12
VENT RATE (KT-FT) 43350 49900
CATEGORY DAY 4 3
INVERSION 7PM 57F/9AM 8PM 61F/10AM
DISPERSION 5 3
MAX ADI EARLY 26 FAIR 33 FAIR 7 POOR 23 FAIR
MAX ADI LATE 12 POOR 54 GEN GOOD 2 VERY POOR 67 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-220830-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 70 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 54 (+24) 69 (+2) 49 77
RH % (24H TREND) 81 (+20) 55 (+30) 90 37
WIND 20FT/EARLY(MPH) SW 6 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 7 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.05 0.00 0.00
PRECIP DURATION 4 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1360 1640
MIXING HGT(FT-AGL/MSL) 4480 5390
TRANSPORT WND (MPH) NW 13 W 12
VENT RATE (KT-FT) 51380 53900
CATEGORY DAY 4 4
INVERSION 7PM 57F/9AM 8PM 62F/10AM
DISPERSION 5 4
MAX ADI EARLY 28 FAIR 32 FAIR 7 POOR 24 FAIR
MAX ADI LATE 13 GEN POOR 55 GEN GOOD 2 VERY POOR 78 GOOD
MAX LVORI EARLY 2 4 3 6
MAX LVORI LATE 3 3 6 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-220830-
OHIO-
INCLUDING THE CITY OF WHEELING
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 70 0 0
CHANCE OF THUNDER (%) 30 20 0 0
TEMP (24H TREND) 53 (+23) 68 (0) 49 78
RH % (24H TREND) 83 (+14) 58 (+32) 92 38
WIND 20FT/EARLY(MPH) SW 7 SW 8 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 8 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.05 0.00 0.00
PRECIP DURATION 4 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1270 1800
MIXING HGT(FT-AGL/MSL) 4160 5890
TRANSPORT WND (MPH) W 13 W 14
VENT RATE (KT-FT) 54500 70680
CATEGORY DAY 3 4
INVERSION 7PM 56F/9AM 8PM 61F/10AM
DISPERSION 5 4
MAX ADI EARLY 29 FAIR 33 FAIR 7 POOR 20 GEN POOR
MAX ADI LATE 13 GEN POOR 52 GEN GOOD 3 VERY POOR 94 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-220830-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 70 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 54 (+22) 69 (+1) 50 79
RH % (24H TREND) 83 (+16) 62 (+36) 92 41
WIND 20FT/EARLY(MPH) SW 6 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.07 0.00 0.00
PRECIP DURATION 3 6
PRECIP BEGIN 11 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1220 1780
MIXING HGT(FT-AGL/MSL) 3990 5850
TRANSPORT WND (MPH) W 13 W 12
VENT RATE (KT-FT) 48200 58500
CATEGORY DAY 3 4
INVERSION 7PM 56F/8AM 8PM 62F/10AM
DISPERSION 5 4
MAX ADI EARLY 30 FAIR 34 FAIR 7 POOR 16 GEN POOR
MAX ADI LATE 13 GEN POOR 48 GEN GOOD 3 VERY POOR 82 GOOD
MAX LVORI EARLY 2 4 4 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-220830-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 70 0 0
CHANCE OF THUNDER (%) 30 30 0 0
TEMP (24H TREND) 53 (+21) 68 (0) 51 77
RH % (24H TREND) 84 (+13) 62 (+37) 94 42
WIND 20FT/EARLY(MPH) SW 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.09 0.00 0.00
PRECIP DURATION 2 6
PRECIP BEGIN 12 AM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1150 1670
MIXING HGT(FT-AGL/MSL) 3780 5470
TRANSPORT WND (MPH) W 12 W 10
VENT RATE (KT-FT) 32240 49230
CATEGORY DAY 3 4
INVERSION 7PM 55F/8AM 8PM 62F/10AM
DISPERSION 5 4
MAX ADI EARLY 19 GEN POOR 36 FAIR 7 POOR 23 FAIR
MAX ADI LATE 11 POOR 43 GEN GOOD 2 VERY POOR 67 GOOD
MAX LVORI EARLY 2 4 5 7
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-220830-
MARION-
INCLUDING THE CITY OF FAIRMONT
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 80 0 0
CHANCE OF THUNDER (%) 20 30 0 0
TEMP (24H TREND) 52 (+23) 65 (-3) 50 76
RH % (24H TREND) 83 (0) 65 (+40) 99 44
WIND 20FT/EARLY(MPH) SW 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 5 W 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.11 0.00 0.00
PRECIP DURATION 1 10
PRECIP BEGIN 1 AM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1150 1820
MIXING HGT(FT-AGL/MSL) 3770 5980
TRANSPORT WND (MPH) W 12 W 13
VENT RATE (KT-FT) 34630 65780
CATEGORY DAY 3 4
INVERSION 7PM 54F/8AM 8PM 56F/9AM
DISPERSION 5 4
MAX ADI EARLY 10 POOR 41 GEN GOOD 7 POOR 25 FAIR
MAX ADI LATE 9 POOR 43 GEN GOOD 3 VERY POOR 91 GOOD
MAX LVORI EARLY 3 4 5 9
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-220830-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 80 0 0
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 52 (+21) 66 (-1) 50 76
RH % (24H TREND) 81 (+7) 64 (+39) 97 42
WIND 20FT/EARLY(MPH) SW 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.11 0.00 0.00
PRECIP DURATION 2 10
PRECIP BEGIN 1 AM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 1220 1870
MIXING HGT(FT-AGL/MSL) 4000 6140
TRANSPORT WND (MPH) W 13 W 14
VENT RATE (KT-FT) 32730 73680
CATEGORY DAY 3 4
INVERSION 7PM 55F/8AM 8PM 57F/9AM
DISPERSION 5 4
MAX ADI EARLY 10 POOR 39 FAIR 7 POOR 22 FAIR
MAX ADI LATE 9 POOR 44 GEN GOOD 3 VERY POOR 102 VERY GOOD
MAX LVORI EARLY 2 4 5 7
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-220830-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 50 80 0 20
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 50 (+21) 62 (-1) 49 73
RH % (24H TREND) 82 (+13) 65 (+40) 97 42
WIND 20FT/EARLY(MPH) SW 5 SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.26 0.00 0.00
PRECIP DURATION 1 10 0
PRECIP BEGIN 2 AM CONTINUING 2 PM
PRECIP END CONTINUING 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 860 1660
MIXING HGT(FT-AGL/MSL) 2840 5450
TRANSPORT WND (MPH) W 13 W 14
VENT RATE (KT-FT) 27200 65400
CATEGORY DAY 3 4
INVERSION 7PM 53F/9AM 7PM 55F/9AM
DISPERSION 5 4
MAX ADI EARLY 11 POOR 32 FAIR 8 POOR 21 FAIR
MAX ADI LATE 13 GEN POOR 40 FAIR 4 VERY POOR 90 GOOD
MAX LVORI EARLY 2 4 5 7
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-220830-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 50 80 0 20
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 50 (+23) 64 (-1) 49 74
RH % (24H TREND) 81 (0) 65 (+40) 98 42
WIND 20FT/EARLY(MPH) LGT/VAR SW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.19 0.00 0.00
PRECIP DURATION 1 10 0
PRECIP BEGIN 2 AM CONTINUING 2 PM
PRECIP END CONTINUING 6 PM 6 PM
MIXING HGT(M-AGL/MSL) 930 1730
MIXING HGT(FT-AGL/MSL) 3050 5680
TRANSPORT WND (MPH) W 14 W 15
VENT RATE (KT-FT) 33380 73840
CATEGORY DAY 3 4
INVERSION 7PM 53F/8AM 8PM 52F/8AM
DISPERSION 5 4
MAX ADI EARLY 11 POOR 45 GEN GOOD 8 POOR 28 FAIR
MAX ADI LATE 11 POOR 43 GEN GOOD 3 VERY POOR 101 VERY GOOD
MAX LVORI EARLY 3 3 6 7
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-220830-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 80 20 20
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 49 (+22) 61 (-1) 49 73
RH % (24H TREND) 83 (+5) 65 (+39) 97 43
WIND 20FT/EARLY(MPH) SW 5 SW 8 G19 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 7 G18 W 7 G19 LGT/VAR W 5
PRECIP AMOUNT 0.06 0.23 0.02 0.00
PRECIP DURATION 1 10 2 1
PRECIP BEGIN 2 AM CONTINUING CONTINUING 8 AM
PRECIP END CONTINUING CONTINUING 2 AM 6 PM
MIXING HGT(M-AGL/MSL) 780 1630
MIXING HGT(FT-AGL/MSL) 2550 5360
TRANSPORT WND (MPH) W 15 W 16
VENT RATE (KT-FT) 33360 75040
CATEGORY DAY 3 4
INVERSION 7PM 52F/8AM 7PM 55F/9AM
DISPERSION 5 4
MAX ADI EARLY 12 POOR 45 GEN GOOD 9 POOR 30 FAIR
MAX ADI LATE 16 GEN POOR 42 GEN GOOD 4 VERY POOR 98 GOOD
MAX LVORI EARLY 3 4 6 6
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-220830-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 80 20 20
CHANCE OF THUNDER (%) 0 20 0 0
TEMP (24H TREND) 49 (+21) 62 (-3) 49 74
RH % (24H TREND) 80 (+6) 64 (+42) 97 41
WIND 20FT/EARLY(MPH) LGT/VAR SW 7 G19 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) SW 6 G18 W 7 G19 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.07 0.27 0.02 0.00
PRECIP DURATION 1 9 2 1
PRECIP BEGIN 3 AM CONTINUING CONTINUING 8 AM
PRECIP END CONTINUING CONTINUING 2 AM 6 PM
MIXING HGT(M-AGL/MSL) 790 1630
MIXING HGT(FT-AGL/MSL) 2600 5350
TRANSPORT WND (MPH) W 16 W 15
VENT RATE (KT-FT) 29500 69550
CATEGORY DAY 3 4
INVERSION 7PM 52F/8AM 7PM 55F/9AM
DISPERSION 5 4
MAX ADI EARLY 13 GEN POOR 53 GEN GOOD 9 POOR 37 FAIR
MAX ADI LATE 14 GEN POOR 49 GEN GOOD 3 VERY POOR 99 GOOD
MAX LVORI EARLY 3 3 6 7
MAX LVORI LATE 3 3 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-220830-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
120 PM EDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 80 10 30
CHANCE OF THUNDER (%) 0 20 0 0
TEMP (24H TREND) 46 (+23) 59 (-1) 46 70
RH % (24H TREND) 81 (+6) 64 (+40) 98 44
WIND 20FT/EARLY(MPH) SW 6 G20 W 10 G28 W 6 G22 LGT/VAR
WIND 20FT/LATE(MPH) W 9 G26 W 9 G28 LGT/VAR W 6
PRECIP AMOUNT 0.07 0.32 0.03 0.00
PRECIP DURATION 1 9 2 1
PRECIP BEGIN 3 AM CONTINUING CONTINUING 8 AM
PRECIP END CONTINUING CONTINUING 2 AM 6 PM
MIXING HGT(M-AGL/MSL) 710 1600
MIXING HGT(FT-AGL/MSL) 2340 5260
TRANSPORT WND (MPH) W 20 NW 17
VENT RATE (KT-FT) 32240 78900
CATEGORY DAY 3 4
INVERSION 7PM 51F/9AM 7PM 54F/9AM
DISPERSION 5 4
MAX ADI EARLY 13 GEN POOR 48 GEN GOOD 15 GEN POOR 52 GEN GOOD
MAX ADI LATE 23 FAIR 45 GEN GOOD 7 POOR 102 VERY GOOD
MAX LVORI EARLY 2 4 5 6
MAX LVORI LATE 3 4 7 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
UPPER 70S. LIGHT WINDS.
SATURDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. COOLER. LOWS IN
THE MID 50S. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
40S. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 5 TO 10 MPH.
MONDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE MID
40S. HIGHS IN THE LOWER 70S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE LOWER
50S. HIGHS IN THE UPPER 60S. SOUTH WINDS 10 TO 15 MPH.
LUPO
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