734
FNUS51 KPBZ 210543
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1243 AM EST SUN DEC 21 2025
DISCUSSION
A DRY COLD FRONT CROSSING THE REGION THIS MORNING WILL VEER WIND
TO THE NORTHWEST WHILE USHERING IN COLDER AIR TO PUSH HIGH
TEMPERATURES DOWN AROUND 10 DEGREES FROM YESTERDAY'S READINGS.
HIGH PRESSURE AND HEIGHT RISES WILL PROVIDE QUIET, CALM OVERNIGHT
CONDITIONS THAT SEE BELOW NORMAL TEMPERATURE.
ENOUGH WARM ADVECTION AT THE SURFACE WILL LIFT TEMPERATURE CLOSER
TO SEASONAL AVERAGES MONDAY DESPITE INCREASING MID TO HIGH LEVEL
CLOUD COVER ASSOCIATED WITH A JET MAX ALOFT. AN AFTERNOON
SPRINKLE CAN'T BE RULED OUT FROM THE MID/HIGH LEVEL WARM
ADVECTION, BUT PRECIPITATION IS MORE LIKELY TUESDAY MORNING AS
MORE DISTINCT SHORTWAVE AND LIFTING WARM FRONT CROSS THE REGION.
OHZ039-212115-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 31 (-13) 17 (-12) 39
RH % (24H TREND) 47 (+11) 81 (+2) 41
WIND 20FT/EARLY(MPH) NW 8 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 770 390
MIXING HGT(FT-AGL/MSL)2540 1280
TRANSPORT WND (MPH) NW 23 S 12
VENT RATE (KT-FT) 57760 12800
CATEGORY DAY 3 1
INVERSION 31F/6AM 6PM 34F/12PM
DISPERSION 5 1
MAX ADI EARLY 65 GOOD 3 VERY POOR 11 POOR
MAX ADI LATE 52 GEN GOOD 3 VERY POOR 16 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-212115-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 30 (-14) 17 (-11) 39
RH % (24H TREND) 49 (+15) 79 (+1) 40
WIND 20FT/EARLY(MPH) NW 10 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR S 5
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 800 380
MIXING HGT(FT-AGL/MSL)2630 1250
TRANSPORT WND (MPH) NW 25 S 10
VENT RATE (KT-FT) 62560 11250
CATEGORY DAY 4 1
INVERSION 31F/6AM 6PM 34F/12PM
DISPERSION 5 1
MAX ADI EARLY 57 GEN GOOD 4 VERY POOR 12 POOR
MAX ADI LATE 51 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-212115-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 30 (-13) 16 (-12) 38
RH % (24H TREND) 52 (+16) 81 (+1) 41
WIND 20FT/EARLY(MPH) NW 10 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 890 410
MIXING HGT(FT-AGL/MSL)2930 1360
TRANSPORT WND (MPH) NW 24 S 9
VENT RATE (KT-FT) 82190 10880
CATEGORY DAY 4 1
INVERSION 31F/6AM 7PM 30F/11AM
DISPERSION 5 1
MAX ADI EARLY 60 GEN GOOD 5 VERY POOR 13 GEN POOR
MAX ADI LATE 59 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-212115-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-13) 18 (-10) 39
RH % (24H TREND) 48 (+10) 84 (+2) 42
WIND 20FT/EARLY(MPH) NW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 720 360
MIXING HGT(FT-AGL/MSL)2360 1190
TRANSPORT WND (MPH) NW 22 S 13
VENT RATE (KT-FT) 52080 13090
CATEGORY DAY 3 2
INVERSION 30F/6AM 6PM 38F/1PM
DISPERSION 5 2
MAX ADI EARLY 59 GEN GOOD 3 VERY POOR 12 POOR
MAX ADI LATE 46 GEN GOOD 3 VERY POOR 16 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-212115-
HARRISON-
INCLUDING THE CITY OF CADIZ
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-13) 18 (-11) 41
RH % (24H TREND) 45 (+11) 80 (+1) 37
WIND 20FT/EARLY(MPH) NW 9 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 780 420
MIXING HGT(FT-AGL/MSL)2550 1380
TRANSPORT WND (MPH) NW 22 S 9
VENT RATE (KT-FT) 47810 11040
CATEGORY DAY 3 1
INVERSION 31F/6AM 6PM 32F/11AM
DISPERSION 5 1
MAX ADI EARLY 65 GOOD 4 VERY POOR 11 POOR
MAX ADI LATE 53 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-212115-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (-13) 18 (-11) 40
RH % (24H TREND) 45 (+15) 77 (+1) 36
WIND 20FT/EARLY(MPH) NW 9 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 820 450
MIXING HGT(FT-AGL/MSL)2680 1490
TRANSPORT WND (MPH) NW 24 S 8
VENT RATE (KT-FT) 65150 10430
CATEGORY DAY 4 1
INVERSION 31F/6AM 6PM 31F/11AM
DISPERSION 5 1
MAX ADI EARLY 70 GOOD 4 VERY POOR 10 POOR
MAX ADI LATE 60 GEN GOOD 3 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-212115-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-13) 19 (-9) 41
RH % (24H TREND) 46 (+14) 83 (+2) 39
WIND 20FT/EARLY(MPH) NW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 680 350
MIXING HGT(FT-AGL/MSL)2230 1160
TRANSPORT WND (MPH) NW 16 S 12
VENT RATE (KT-FT) 54540 11600
CATEGORY DAY 3 1
INVERSION 30F/6AM 6PM 39F/1PM
DISPERSION 5 1
MAX ADI EARLY 53 GEN GOOD 3 VERY POOR 11 POOR
MAX ADI LATE 44 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-212115-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-13) 19 (-10) 42
RH % (24H TREND) 44 (+9) 82 (+1) 37
WIND 20FT/EARLY(MPH) W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 730 420
MIXING HGT(FT-AGL/MSL)2390 1390
TRANSPORT WND (MPH) W 16 S 10
VENT RATE (KT-FT) 56760 12510
CATEGORY DAY 3 2
INVERSION 32F/6AM 6PM 36F/12PM
DISPERSION 5 2
MAX ADI EARLY 56 GEN GOOD 3 VERY POOR 11 POOR
MAX ADI LATE 47 GEN GOOD 3 VERY POOR 16 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-212115-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-13) 19 (-11) 42
RH % (24H TREND) 43 (+11) 80 (+2) 36
WIND 20FT/EARLY(MPH) W 8 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 740 470
MIXING HGT(FT-AGL/MSL)2440 1530
TRANSPORT WND (MPH) NW 18 S 9
VENT RATE (KT-FT) 66290 12240
CATEGORY DAY 3 1
INVERSION 32F/6AM 6PM 33F/11AM
DISPERSION 5 1
MAX ADI EARLY 59 GEN GOOD 3 VERY POOR 10 POOR
MAX ADI LATE 52 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-212115-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-12) 19 (-11) 42
RH % (24H TREND) 44 (+12) 82 (+3) 36
WIND 20FT/EARLY(MPH) NW 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 680 420
MIXING HGT(FT-AGL/MSL)2240 1390
TRANSPORT WND (MPH) NW 17 S 9
VENT RATE (KT-FT) 55910 11120
CATEGORY DAY 3 1
INVERSION 32F/6AM 6PM 37F/12PM
DISPERSION 5 1
MAX ADI EARLY 52 GEN GOOD 3 VERY POOR 10 POOR
MAX ADI LATE 45 GEN GOOD 2 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-212115-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-12) 20 (-10) 43
RH % (24H TREND) 44 (+15) 80 (+3) 35
WIND 20FT/EARLY(MPH) W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 710 500
MIXING HGT(FT-AGL/MSL)2340 1660
TRANSPORT WND (MPH) NW 20 S 8
VENT RATE (KT-FT) 73510 11620
CATEGORY DAY 3 2
INVERSION 33F/6AM 6PM 33F/11AM
DISPERSION 5 2
MAX ADI EARLY 52 GEN GOOD 3 VERY POOR 9 POOR
MAX ADI LATE 47 GEN GOOD 2 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-212115-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE SNOW
CHANCE PRECIP (%) 0 0 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 29 (-10) 14 (-13) 36
RH % (24H TREND) 58 (+13) 91 (+5) 50
WIND 20FT/EARLY(MPH) W 12 G20 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 10 G18 LGT/VAR S 5
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 PM
PRECIP END CONTINUING
MIXING HGT(M-AGL/MSL) 1070 430
MIXING HGT(FT-AGL/MSL)3520 1420
TRANSPORT WND (MPH) NW 29 S 9
VENT RATE (KT-FT) 73110 11360
CATEGORY DAY 4 1
INVERSION 30F/6AM 7PM 28F/11AM
DISPERSION 5 1
MAX ADI EARLY 74 GOOD 6 VERY POOR 17 GEN POOR
MAX ADI LATE 61 GOOD 4 VERY POOR 18 GEN POOR
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 2 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-212115-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 29 (-10) 14 (-12) 35
RH % (24H TREND) 60 (+17) 94 (+9) 52
WIND 20FT/EARLY(MPH) W 11 G20 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 9 G19 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1110 510
MIXING HGT(FT-AGL/MSL)3640 1670
TRANSPORT WND (MPH) W 28 SW 8
VENT RATE (KT-FT) 71960 11690
CATEGORY DAY 4 2
INVERSION 30F/6AM 8PM 24F/10AM
DISPERSION 5 2
MAX ADI EARLY 74 GOOD 10 POOR 16 GEN POOR
MAX ADI LATE 63 GOOD 4 VERY POOR 17 GEN POOR
MAX LVORI EARLY 3 5 5
MAX LVORI LATE 2 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-212115-
FOREST-
INCLUDING THE CITY OF TIONESTA
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 29 (-9) 14 (-12) 34
RH % (24H TREND) 56 (+19) 94 (+11) 50
WIND 20FT/EARLY(MPH) W 9 G22 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 8 G20 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1020 600
MIXING HGT(FT-AGL/MSL)3360 1970
TRANSPORT WND (MPH) W 28 SW 9
VENT RATE (KT-FT) 81220 15760
CATEGORY DAY 4 2
INVERSION 30F/6AM 11PM 23F/10AM
DISPERSION 5 2
MAX ADI EARLY 69 GOOD 13 GEN POOR 22 FAIR
MAX ADI LATE 65 GOOD 5 VERY POOR 23 FAIR
MAX LVORI EARLY 3 5 5
MAX LVORI LATE 2 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-212115-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 30 (-11) 14 (-14) 38
RH % (24H TREND) 55 (+10) 88 (+6) 46
WIND 20FT/EARLY(MPH) W 9 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1010 450
MIXING HGT(FT-AGL/MSL)3300 1470
TRANSPORT WND (MPH) NW 28 S 8
VENT RATE (KT-FT) 91990 10290
CATEGORY DAY 4 1
INVERSION 31F/6AM 7PM 29F/11AM
DISPERSION 5 1
MAX ADI EARLY 69 GOOD 6 VERY POOR 15 GEN POOR
MAX ADI LATE 70 GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 2 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-212115-
BUTLER-
INCLUDING THE CITY OF BUTLER
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 30 (-11) 14 (-14) 37
RH % (24H TREND) 57 (+12) 91 (+8) 47
WIND 20FT/EARLY(MPH) W 10 G19 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 9 G18 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 990 460
MIXING HGT(FT-AGL/MSL)3240 1510
TRANSPORT WND (MPH) NW 28 SW 7
VENT RATE (KT-FT) 87860 9060
CATEGORY DAY 4 1
INVERSION 31F/6AM 7PM 25F/10AM
DISPERSION 5 1
MAX ADI EARLY 70 GOOD 6 VERY POOR 14 GEN POOR
MAX ADI LATE 65 GOOD 3 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 2 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-212115-
CLARION-
INCLUDING THE CITY OF CLARION
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 30 (-9) 14 (-13) 35
RH % (24H TREND) 58 (+20) 89 (+8) 50
WIND 20FT/EARLY(MPH) W 10 G21 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 9 G20 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1060 550
MIXING HGT(FT-AGL/MSL)3470 1800
TRANSPORT WND (MPH) NW 28 SW 7
VENT RATE (KT-FT) 100340 10800
CATEGORY DAY 4 1
INVERSION 31F/6AM 10PM 24F/10AM
DISPERSION 5 1
MAX ADI EARLY 75 GOOD 12 POOR 18 GEN POOR
MAX ADI LATE 66 GOOD 4 VERY POOR 17 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-212115-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 30 (-9) 15 (-12) 34
RH % (24H TREND) 54 (+20) 85 (+6) 46
WIND 20FT/EARLY(MPH) W 12 G23 W 6 LGT/VAR
WIND 20FT/LATE(MPH) W 10 G22 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1050 610
MIXING HGT(FT-AGL/MSL)3450 1990
TRANSPORT WND (MPH) W 29 SW 7
VENT RATE (KT-FT) 99620 11940
CATEGORY DAY 4 1
INVERSION 31F/6AM 12AM 20F/9AM
DISPERSION 5 1
MAX ADI EARLY 76 GOOD 28 FAIR 20 GEN POOR
MAX ADI LATE 71 GOOD 9 POOR 20 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-212115-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 31 (-14) 16 (-13) 39
RH % (24H TREND) 51 (+16) 81 (+3) 41
WIND 20FT/EARLY(MPH) W 9 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 940 470
MIXING HGT(FT-AGL/MSL)3090 1550
TRANSPORT WND (MPH) NW 25 S 7
VENT RATE (KT-FT) 86430 9300
CATEGORY DAY 4 1
INVERSION 31F/6AM 7PM 30F/11AM
DISPERSION 5 1
MAX ADI EARLY 79 GOOD 5 VERY POOR 12 POOR
MAX ADI LATE 70 GOOD 3 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-212115-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-13) 16 (-14) 40
RH % (24H TREND) 50 (+19) 84 (+6) 41
WIND 20FT/EARLY(MPH) W 10 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 9 G18 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 940 500
MIXING HGT(FT-AGL/MSL)3100 1630
TRANSPORT WND (MPH) W 23 S 7
VENT RATE (KT-FT) 89260 9780
CATEGORY DAY 4 1
INVERSION 32F/6AM 7PM 30F/11AM
DISPERSION 5 1
MAX ADI EARLY 61 GOOD 5 VERY POOR 12 POOR
MAX ADI LATE 58 GEN GOOD 3 VERY POOR 13 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-212115-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 31 (-11) 15 (-14) 38
RH % (24H TREND) 55 (+18) 88 (+6) 45
WIND 20FT/EARLY(MPH) W 11 G20 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 9 G19 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1040 530
MIXING HGT(FT-AGL/MSL)3430 1740
TRANSPORT WND (MPH) W 28 SW 7
VENT RATE (KT-FT) 98330 10440
CATEGORY DAY 4 1
INVERSION 32F/6AM 8PM 25F/10AM
DISPERSION 5 1
MAX ADI EARLY 70 GOOD 8 POOR 17 GEN POOR
MAX ADI LATE 71 GOOD 4 VERY POOR 16 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 6 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-212115-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-14) 18 (-12) 42
RH % (24H TREND) 47 (+21) 79 (+3) 36
WIND 20FT/EARLY(MPH) W 9 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 9 G18 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 860 510
MIXING HGT(FT-AGL/MSL)2810 1670
TRANSPORT WND (MPH) W 22 S 7
VENT RATE (KT-FT) 82390 10020
CATEGORY DAY 4 1
INVERSION 33F/6AM 6PM 32F/11AM
DISPERSION 5 1
MAX ADI EARLY 57 GEN GOOD 4 VERY POOR 10 POOR
MAX ADI LATE 51 GEN GOOD 3 VERY POOR 13 GEN POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-212115-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-16) 18 (-13) 42
RH % (24H TREND) 47 (+26) 80 (+4) 35
WIND 20FT/EARLY(MPH) W 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 850 580
MIXING HGT(FT-AGL/MSL)2780 1890
TRANSPORT WND (MPH) W 22 S 6
VENT RATE (KT-FT) 90040 9450
CATEGORY DAY 4 1
INVERSION 34F/6AM 6PM 33F/11AM
DISPERSION 5 1
MAX ADI EARLY 64 GOOD 4 VERY POOR 10 POOR
MAX ADI LATE 59 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-212115-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-15) 16 (-14) 42
RH % (24H TREND) 51 (+16) 86 (+5) 38
WIND 20FT/EARLY(MPH) W 12 G20 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 11 G19 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1000 560
MIXING HGT(FT-AGL/MSL)3270 1830
TRANSPORT WND (MPH) W 24 SW 6
VENT RATE (KT-FT) 98420 9150
CATEGORY DAY 4 1
INVERSION 33F/6AM 7PM 28F/10AM
DISPERSION 5 1
MAX ADI EARLY 62 GOOD 6 VERY POOR 15 GEN POOR
MAX ADI LATE 61 GOOD 3 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-212115-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-16) 17 (-12) 41
RH % (24H TREND) 49 (+22) 77 (+1) 33
WIND 20FT/EARLY(MPH) W 13 G24 W 5 G17 LGT/VAR
WIND 20FT/LATE(MPH) W 11 G23 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1010 650
MIXING HGT(FT-AGL/MSL)3330 2130
TRANSPORT WND (MPH) W 26 SW 5
VENT RATE (KT-FT) 101980 8520
CATEGORY DAY 4 1
INVERSION 32F/6AM 7PM 28F/10AM
DISPERSION 5 1
MAX ADI EARLY 65 GOOD 10 POOR 16 GEN POOR
MAX ADI LATE 62 GOOD 5 VERY POOR 13 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-212115-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-17) 18 (-13) 43
RH % (24H TREND) 47 (+29) 82 (+4) 34
WIND 20FT/EARLY(MPH) W 8 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 960 630
MIXING HGT(FT-AGL/MSL)3160 2070
TRANSPORT WND (MPH) W 23 SW 5
VENT RATE (KT-FT) 93400 8280
CATEGORY DAY 4 1
INVERSION 34F/6AM 6PM 26F/9AM
DISPERSION 5 1
MAX ADI EARLY 71 GOOD 4 VERY POOR 11 POOR
MAX ADI LATE 67 GOOD 3 VERY POOR 12 POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-212115-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-18) 17 (-12) 42
RH % (24H TREND) 49 (+29) 78 (+1) 31
WIND 20FT/EARLY(MPH) W 9 G20 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 8 G19 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 890 610
MIXING HGT(FT-AGL/MSL)2910 2010
TRANSPORT WND (MPH) W 25 SW 3
VENT RATE (KT-FT) 104840 6030
CATEGORY DAY 4 1
INVERSION 32F/6AM 6PM 32F/11AM
DISPERSION 5 1
MAX ADI EARLY 65 GOOD 6 VERY POOR 8 POOR
MAX ADI LATE 65 GOOD 3 VERY POOR 8 POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-212115-
INDIANA-
INCLUDING THE CITY OF INDIANA
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 31 (-12) 16 (-13) 39
RH % (24H TREND) 53 (+15) 84 (+5) 41
WIND 20FT/EARLY(MPH) W 12 G23 W 5 G17 LGT/VAR
WIND 20FT/LATE(MPH) W 11 G23 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1010 560
MIXING HGT(FT-AGL/MSL)3330 1820
TRANSPORT WND (MPH) W 29 SW 7
VENT RATE (KT-FT) 104970 10920
CATEGORY DAY 4 1
INVERSION 32F/6AM 11PM 22F/9AM
DISPERSION 5 1
MAX ADI EARLY 71 GOOD 12 POOR 20 GEN POOR
MAX ADI LATE 68 GOOD 6 VERY POOR 18 GEN POOR
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-212115-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 31 (-12) 16 (-13) 39
RH % (24H TREND) 52 (+15) 80 (+3) 39
WIND 20FT/EARLY(MPH) W 13 G24 W 6 G17 LGT/VAR
WIND 20FT/LATE(MPH) W 11 G24 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 980 570
MIXING HGT(FT-AGL/MSL)3230 1870
TRANSPORT WND (MPH) W 29 SW 7
VENT RATE (KT-FT) 98390 11220
CATEGORY DAY 4 1
INVERSION 32F/6AM 11PM 26F/10AM
DISPERSION 5 1
MAX ADI EARLY 71 GOOD 13 GEN POOR 19 GEN POOR
MAX ADI LATE 69 GOOD 6 VERY POOR 18 GEN POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-212115-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 31 (-15) 19 (-10) 39
RH % (24H TREND) 47 (+19) 77 (+2) 38
WIND 20FT/EARLY(MPH) NW 9 G18 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 890 490
MIXING HGT(FT-AGL/MSL)2920 1600
TRANSPORT WND (MPH) NW 24 S 7
VENT RATE (KT-FT) 70950 9600
CATEGORY DAY 4 1
INVERSION 31F/6AM 7PM 30F/11AM
DISPERSION 5 1
MAX ADI EARLY 72 GOOD 5 VERY POOR 11 POOR
MAX ADI LATE 65 GOOD 3 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-212115-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (-15) 19 (-11) 42
RH % (24H TREND) 44 (+16) 75 (+1) 36
WIND 20FT/EARLY(MPH) W 9 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 860 510
MIXING HGT(FT-AGL/MSL)2820 1680
TRANSPORT WND (MPH) W 21 S 7
VENT RATE (KT-FT) 73680 10080
CATEGORY DAY 3 1
INVERSION 32F/6AM 6PM 32F/11AM
DISPERSION 5 1
MAX ADI EARLY 69 GOOD 4 VERY POOR 11 POOR
MAX ADI LATE 63 GOOD 3 VERY POOR 14 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 2 3 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-212115-
OHIO-
INCLUDING THE CITY OF WHEELING
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (-16) 19 (-11) 42
RH % (24H TREND) 44 (+16) 76 (+1) 36
WIND 20FT/EARLY(MPH) W 9 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 8 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 790 490
MIXING HGT(FT-AGL/MSL)2590 1620
TRANSPORT WND (MPH) W 20 S 7
VENT RATE (KT-FT) 66820 9720
CATEGORY DAY 3 1
INVERSION 32F/6AM 6PM 32F/11AM
DISPERSION 5 1
MAX ADI EARLY 65 GOOD 4 VERY POOR 9 POOR
MAX ADI LATE 56 GEN GOOD 3 VERY POOR 13 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-212115-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-13) 20 (-10) 42
RH % (24H TREND) 46 (+19) 77 (+1) 36
WIND 20FT/EARLY(MPH) W 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 780 550
MIXING HGT(FT-AGL/MSL)2550 1820
TRANSPORT WND (MPH) W 21 S 7
VENT RATE (KT-FT) 73560 10920
CATEGORY DAY 3 1
INVERSION 34F/6AM 6PM 33F/11AM
DISPERSION 5 1
MAX ADI EARLY 58 GEN GOOD 3 VERY POOR 9 POOR
MAX ADI LATE 53 GEN GOOD 3 VERY POOR 15 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-212115-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 35 (-14) 21 (-10) 42
RH % (24H TREND) 46 (+19) 79 (+2) 35
WIND 20FT/EARLY(MPH) W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 780 590
MIXING HGT(FT-AGL/MSL)2550 1930
TRANSPORT WND (MPH) W 20 S 7
VENT RATE (KT-FT) 75710 11580
CATEGORY DAY 3 1
INVERSION 34F/6AM 6PM 33F/11AM
DISPERSION 5 1
MAX ADI EARLY 56 GEN GOOD 3 VERY POOR 9 POOR
MAX ADI LATE 51 GEN GOOD 2 VERY POOR 16 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-212115-
MARION-
INCLUDING THE CITY OF FAIRMONT
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-14) 20 (-11) 43
RH % (24H TREND) 47 (+20) 82 (+3) 32
WIND 20FT/EARLY(MPH) W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 840 600
MIXING HGT(FT-AGL/MSL)2740 1960
TRANSPORT WND (MPH) W 20 S 5
VENT RATE (KT-FT) 75220 7840
CATEGORY DAY 3 1
INVERSION 34F/6AM 6PM 34F/11AM
DISPERSION 5 1
MAX ADI EARLY 59 GEN GOOD 3 VERY POOR 8 POOR
MAX ADI LATE 58 GEN GOOD 2 VERY POOR 12 POOR
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-212115-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-14) 19 (-12) 43
RH % (24H TREND) 47 (+24) 81 (+4) 31
WIND 20FT/EARLY(MPH) W 6 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 920 640
MIXING HGT(FT-AGL/MSL)3000 2090
TRANSPORT WND (MPH) W 21 S 5
VENT RATE (KT-FT) 88170 8360
CATEGORY DAY 4 1
INVERSION 34F/6AM 6PM 31F/10AM
DISPERSION 5 1
MAX ADI EARLY 61 GOOD 4 VERY POOR 10 POOR
MAX ADI LATE 63 GOOD 3 VERY POOR 12 POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-212115-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (-17) 19 (-11) 42
RH % (24H TREND) 48 (+24) 80 (+2) 32
WIND 20FT/EARLY(MPH) W 7 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 780 550
MIXING HGT(FT-AGL/MSL)2570 1790
TRANSPORT WND (MPH) W 22 S 5
VENT RATE (KT-FT) 83570 7160
CATEGORY DAY 3 1
INVERSION 32F/7AM 6PM 33F/11AM
DISPERSION 5 1
MAX ADI EARLY 58 GEN GOOD 5 VERY POOR 7 POOR
MAX ADI LATE 59 GEN GOOD 3 VERY POOR 8 POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-212115-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 35 (-16) 19 (-12) 44
RH % (24H TREND) 48 (+21) 81 (+1) 30
WIND 20FT/EARLY(MPH) W 7 G17 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 7 G17 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 900 670
MIXING HGT(FT-AGL/MSL)2940 2210
TRANSPORT WND (MPH) W 23 S 5
VENT RATE (KT-FT) 102100 8840
CATEGORY DAY 4 1
INVERSION 33F/6AM 7PM 31F/10AM
DISPERSION 5 1
MAX ADI EARLY 68 GOOD 5 VERY POOR 9 POOR
MAX ADI LATE 67 GOOD 3 VERY POOR 11 POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-212115-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (-18) 18 (-12) 43
RH % (24H TREND) 48 (+22) 80 (+1) 28
WIND 20FT/EARLY(MPH) W 10 G23 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) W 9 G22 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 860 640
MIXING HGT(FT-AGL/MSL)2830 2110
TRANSPORT WND (MPH) W 25 SW 5
VENT RATE (KT-FT) 108470 8440
CATEGORY DAY 4 1
INVERSION 32F/6AM 6PM 30F/10AM
DISPERSION 5 1
MAX ADI EARLY 60 GEN GOOD 7 POOR 8 POOR
MAX ADI LATE 64 GOOD 4 VERY POOR 10 POOR
MAX LVORI EARLY 3 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-212115-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 35 (-18) 18 (-12) 45
RH % (24H TREND) 44 (+19) 79 (+2) 24
WIND 20FT/EARLY(MPH) W 8 G21 LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) NW 9 G21 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 960 780
MIXING HGT(FT-AGL/MSL)3160 2550
TRANSPORT WND (MPH) W 25 SW 5
VENT RATE (KT-FT) 117020 10200
CATEGORY DAY 4 1
INVERSION 33F/6AM 6PM 32F/10AM
DISPERSION 5 1
MAX ADI EARLY 67 GOOD 6 VERY POOR 6 VERY POOR
MAX ADI LATE 70 GOOD 4 VERY POOR 13 GEN POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-212115-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1243 AM EST SUN DEC 21 2025
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (-18) 16 (-12) 42
RH % (24H TREND) 51 (+29) 78 (+1) 26
WIND 20FT/EARLY(MPH) W 12 G33 W 6 G23 LGT/VAR
WIND 20FT/LATE(MPH) W 11 G31 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 930 760
MIXING HGT(FT-AGL/MSL)3040 2500
TRANSPORT WND (MPH) NW 32 SW 5
VENT RATE (KT-FT) 141810 10000
CATEGORY DAY 4 1
INVERSION 31F/6AM 6PM 34F/11AM
DISPERSION 5 1
MAX ADI EARLY 66 GOOD 14 GEN POOR 8 POOR
MAX ADI LATE 73 GOOD 7 POOR 12 POOR
MAX LVORI EARLY 3 3 3
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
TUESDAY
RAIN, A CHANCE OF SNOW AND FREEZING RAIN. LOWS IN THE
LOWER 30S. HIGHS IN THE UPPER 40S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS AROUND 30. HIGHS IN THE MID 40S.
NORTH WINDS AROUND 5 MPH.
THURSDAY
CLOUDY WITH RAIN LIKELY AND A CHANCE OF FREEZING
RAIN. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. SOUTHWEST WINDS
10 TO 15 MPH.
FRIDAY
RAIN. LOWS IN THE MID 40S. HIGHS IN THE MID 50S. WEST
WINDS 15 TO 20 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN. COOLER. LOWS IN
THE LOWER 30S. HIGHS IN THE MID 40S. SOUTHEAST WINDS 10 TO
15 MPH.
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