690
FNUS51 KPBZ 190538
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1238 AM EST FRI DEC 19 2025
DISCUSSION
MORNING COLD FRONTAL PASSAGE WILL FOSTER A RAIN TO SNOW CHANGE
OVER AS TEMPERATURE GENERALLY FALLS THROUGH THE DAY. TIGHT SURFACE
GRADIENTS AND A MIXED BOUNDARY LAYER ALSO MEANS GUST WESTERLY WIND
BETWEEN 25 TO 35 MPH IN THE LOWER ELEVATIONS AND AROUND 50 MPH IN
THE HIGHER ELEVATIONS.
SWIFT MOVEMENT OF HIGH PRESSURE OVER THE REGION AS ANOTHER TROUGH
DEVELOPS OVER THE WESTERN GREAT LAKES WILL AID IN TEMPERATURE
MODERATION AND BACKING WIND TO THE SOUTH. PERIODIC SHORTWAVE
MOVEMENTS ARE EXPECTED SUNDAY INTO EARLY NEXT WEEK KEEP OCCASIONAL
LIGHT PRECIPITATION CHANCES IN THE FORECAST ALONG WITH TEMPERATURE
FLUCTUATIONS BETWEEN ABOVE AND BELOW NORMAL.
OHZ039-192115-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-23) 17 (-15) 44
RH % (24H TREND) 58 (+25) 82 (-11) 41
WIND 20FT/EARLY(MPH) W 15 G28 W 10 G23 S 8 G20
WIND 20FT/LATE(MPH) W 16 G28 LGT/VAR S 10 G20
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1360 440
MIXING HGT(FT-AGL/MSL)4460 1430
TRANSPORT WND (MPH) W 36 S 21
VENT RATE (KT-FT) 122390 32520
CATEGORY DAY 5 2
INVERSION 39F/6AM 3AM 26F/9AM
DISPERSION 5 5
MAX ADI EARLY 99 GOOD 44 GEN GOOD 36 FAIR
MAX ADI LATE 110 VERY GOOD10 POOR 35 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-192115-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 70 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-21) 17 (-16) 43
RH % (24H TREND) 59 (+23) 79 (-13) 40
WIND 20FT/EARLY(MPH) W 15 G29 W 12 G25 S 9 G19
WIND 20FT/LATE(MPH) W 18 G29 SW 6 S 11 G20
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1340 420
MIXING HGT(FT-AGL/MSL)4390 1380
TRANSPORT WND (MPH) W 38 S 21
VENT RATE (KT-FT) 126450 27760
CATEGORY DAY 5 2
INVERSION 39F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 99 GOOD 46 GEN GOOD 34 FAIR
MAX ADI LATE 112 VERY GOOD18 GEN POOR 35 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-192115-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (-19) 17 (-17) 42
RH % (24H TREND) 60 (+25) 79 (-14) 41
WIND 20FT/EARLY(MPH) W 15 G29 W 13 G25 S 8 G19
WIND 20FT/LATE(MPH) W 18 G29 SW 6 S 10 G20
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 7 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1350 440
MIXING HGT(FT-AGL/MSL)4440 1440
TRANSPORT WND (MPH) W 39 S 21
VENT RATE (KT-FT) 133650 30530
CATEGORY DAY 5 2
INVERSION 39F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 101 VERY GOOD44 GEN GOOD 36 FAIR
MAX ADI LATE 104 VERY GOOD18 GEN POOR 36 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-192115-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (-23) 18 (-11) 44
RH % (24H TREND) 59 (+19) 85 (-10) 44
WIND 20FT/EARLY(MPH) W 14 G26 W 8 G23 S 7 G18
WIND 20FT/LATE(MPH) W 14 G25 LGT/VAR S 9 G19
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1350 440
MIXING HGT(FT-AGL/MSL)4420 1430
TRANSPORT WND (MPH) W 36 S 22
VENT RATE (KT-FT) 130800 30860
CATEGORY DAY 5 3
INVERSION 37F/6AM 2AM 27F/9AM
DISPERSION 5 5
MAX ADI EARLY 100 GOOD 40 FAIR 38 FAIR
MAX ADI LATE 109 VERY GOOD7 POOR 36 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-192115-
HARRISON-
INCLUDING THE CITY OF CADIZ
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 70 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (-20) 18 (-16) 45
RH % (24H TREND) 58 (+21) 80 (-12) 39
WIND 20FT/EARLY(MPH) W 15 G31 W 11 G24 S 8 G17
WIND 20FT/LATE(MPH) W 16 G31 SW 5 S 10 G19
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1350 420
MIXING HGT(FT-AGL/MSL)4430 1390
TRANSPORT WND (MPH) W 37 S 20
VENT RATE (KT-FT) 130670 28630
CATEGORY DAY 5 2
INVERSION 40F/6AM 3AM 26F/9AM
DISPERSION 5 5
MAX ADI EARLY 94 GOOD 42 GEN GOOD 34 FAIR
MAX ADI LATE 112 VERY GOOD12 POOR 33 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-192115-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (-17) 18 (-18) 45
RH % (24H TREND) 57 (+24) 77 (-13) 38
WIND 20FT/EARLY(MPH) W 15 G30 W 12 G24 S 7 G17
WIND 20FT/LATE(MPH) W 17 G31 SW 5 S 10 G19
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 7 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1400 440
MIXING HGT(FT-AGL/MSL)4590 1430
TRANSPORT WND (MPH) W 37 S 18
VENT RATE (KT-FT) 138920 26100
CATEGORY DAY 5 2
INVERSION 41F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 96 GOOD 42 GEN GOOD 32 FAIR
MAX ADI LATE 111 VERY GOOD18 GEN POOR 30 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-192115-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-22) 19 (-12) 45
RH % (24H TREND) 58 (+20) 83 (-11) 42
WIND 20FT/EARLY(MPH) W 15 G27 W 7 G21 S 6
WIND 20FT/LATE(MPH) W 14 G26 LGT/VAR S 9 G18
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(M-AGL/MSL) 1340 430
MIXING HGT(FT-AGL/MSL)4400 1420
TRANSPORT WND (MPH) W 36 S 21
VENT RATE (KT-FT) 130070 28680
CATEGORY DAY 5 2
INVERSION 38F/6AM 1AM 31F/10AM
DISPERSION 5 5
MAX ADI EARLY 100 GOOD 39 FAIR 39 FAIR
MAX ADI LATE 107 VERY GOOD6 VERY POOR 37 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-192115-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 60 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (-23) 19 (-14) 46
RH % (24H TREND) 56 (+22) 83 (-11) 39
WIND 20FT/EARLY(MPH) W 14 G29 W 8 G23 S 6 G17
WIND 20FT/LATE(MPH) W 14 G28 LGT/VAR S 9 G19
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 9 AM
MIXING HGT(M-AGL/MSL) 1360 430
MIXING HGT(FT-AGL/MSL)4470 1420
TRANSPORT WND (MPH) W 36 S 20
VENT RATE (KT-FT) 131360 28460
CATEGORY DAY 5 2
INVERSION 39F/6AM 2AM 28F/9AM
DISPERSION 5 5
MAX ADI EARLY 91 GOOD 39 FAIR 37 FAIR
MAX ADI LATE 107 VERY GOOD7 POOR 36 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-192115-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 70 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (-18) 19 (-17) 46
RH % (24H TREND) 57 (+23) 81 (-11) 37
WIND 20FT/EARLY(MPH) W 15 G31 W 10 G24 S 7 G17
WIND 20FT/LATE(MPH) W 16 G31 SW 5 S 9 G19
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1370 430
MIXING HGT(FT-AGL/MSL)4490 1420
TRANSPORT WND (MPH) W 38 S 20
VENT RATE (KT-FT) 143320 27420
CATEGORY DAY 5 2
INVERSION 42F/6AM 3AM 27F/9AM
DISPERSION 5 5
MAX ADI EARLY 95 GOOD 43 GEN GOOD 33 FAIR
MAX ADI LATE 114 VERY GOOD9 POOR 33 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-192115-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 60 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (-21) 20 (-15) 47
RH % (24H TREND) 57 (+23) 83 (-10) 40
WIND 20FT/EARLY(MPH) W 14 G29 W 7 G23 S 6
WIND 20FT/LATE(MPH) W 13 G28 LGT/VAR S 8 G18
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 9 AM
MIXING HGT(M-AGL/MSL) 1350 430
MIXING HGT(FT-AGL/MSL)4430 1410
TRANSPORT WND (MPH) W 37 S 18
VENT RATE (KT-FT) 122250 27840
CATEGORY DAY 5 2
INVERSION 41F/6AM 2AM 28F/9AM
DISPERSION 5 5
MAX ADI EARLY 97 GOOD 39 FAIR 34 FAIR
MAX ADI LATE 111 VERY GOOD6 VERY POOR 34 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-192115-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 70 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-17) 20 (-17) 47
RH % (24H TREND) 56 (+24) 81 (-9) 39
WIND 20FT/EARLY(MPH) W 13 G30 W 7 G23 S 5
WIND 20FT/LATE(MPH) W 13 G30 LGT/VAR S 7 G18
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1350 440
MIXING HGT(FT-AGL/MSL)4440 1440
TRANSPORT WND (MPH) W 37 S 16
VENT RATE (KT-FT) 132170 27360
CATEGORY DAY 5 2
INVERSION 43F/6AM 3AM 28F/9AM
DISPERSION 5 5
MAX ADI EARLY 102 VERY GOOD41 GEN GOOD 30 FAIR
MAX ADI LATE 114 VERY GOOD7 POOR 30 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-192115-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-18) 15 (-19) 41
RH % (24H TREND) 68 (+26) 88 (-8) 48
WIND 20FT/EARLY(MPH) W 15 G27 W 16 G26 S 8 G19
WIND 20FT/LATE(MPH) W 18 G30 SW 8 G17 S 11 G21
PRECIP AMOUNT 0.09 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1230 470
MIXING HGT(FT-AGL/MSL)4040 1540
TRANSPORT WND (MPH) W 36 S 23
VENT RATE (KT-FT) 131610 32560
CATEGORY DAY 5 3
INVERSION 38F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 93 GOOD 49 GEN GOOD 35 FAIR
MAX ADI LATE 106 VERY GOOD29 FAIR 36 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-192115-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE
CHANCE PRECIP (%) 90 40 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (-15) 15 (-19) 39
RH % (24H TREND) 73 (+26) 91 (-7) 49
WIND 20FT/EARLY(MPH) W 12 G26 W 13 G26 S 7
WIND 20FT/LATE(MPH) W 15 G27 W 7 G19 S 8 G18
PRECIP AMOUNT 0.14 0.02 0.00
PRECIP DURATION 4 0
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 1270 460
MIXING HGT(FT-AGL/MSL)4150 1530
TRANSPORT WND (MPH) W 35 S 18
VENT RATE (KT-FT) 133450 28470
CATEGORY DAY 5 2
INVERSION 39F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 82 GOOD 46 GEN GOOD 32 FAIR
MAX ADI LATE 104 VERY GOOD28 FAIR 33 FAIR
MAX LVORI EARLY 5 3 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-192115-
FOREST-
INCLUDING THE CITY OF TIONESTA
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE
CHANCE PRECIP (%) 90 30 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (-13) 15 (-20) 38
RH % (24H TREND) 71 (+24) 93 (-5) 46
WIND 20FT/EARLY(MPH) W 10 G25 W 12 G26 S 5
WIND 20FT/LATE(MPH) W 13 G27 W 6 G21 S 8 G18
PRECIP AMOUNT 0.18 0.02 0.00
PRECIP DURATION 5 0
PRECIP BEGIN 6 AM CONTINUING
PRECIP END CONTINUING 8 PM
MIXING HGT(M-AGL/MSL) 1260 520
MIXING HGT(FT-AGL/MSL)4130 1690
TRANSPORT WND (MPH) W 39 SW 12
VENT RATE (KT-FT) 138410 15770
CATEGORY DAY 5 2
INVERSION 37F/7AM NONE NONE
DISPERSION 5 4
MAX ADI EARLY 67 GOOD 48 GEN GOOD 29 FAIR
MAX ADI LATE 107 VERY GOOD29 FAIR 31 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-192115-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (-20) 15 (-20) 42
RH % (24H TREND) 64 (+26) 85 (-9) 44
WIND 20FT/EARLY(MPH) W 13 G25 W 13 G25 S 7
WIND 20FT/LATE(MPH) W 17 G26 SW 5 S 9 G17
PRECIP AMOUNT 0.06 0.00 0.00
PRECIP DURATION 3
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1350 510
MIXING HGT(FT-AGL/MSL)4410 1670
TRANSPORT WND (MPH) W 39 S 21
VENT RATE (KT-FT) 144010 28520
CATEGORY DAY 5 3
INVERSION 40F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 97 GOOD 52 GEN GOOD 37 FAIR
MAX ADI LATE 112 VERY GOOD28 FAIR 36 FAIR
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.
PAZ014-192115-
BUTLER-
INCLUDING THE CITY OF BUTLER
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (-17) 15 (-21) 41
RH % (24H TREND) 68 (+24) 88 (-10) 46
WIND 20FT/EARLY(MPH) W 14 G26 W 14 G26 S 6
WIND 20FT/LATE(MPH) W 17 G27 W 6 G18 S 8 G17
PRECIP AMOUNT 0.10 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1300 490
MIXING HGT(FT-AGL/MSL)4270 1620
TRANSPORT WND (MPH) W 39 S 16
VENT RATE (KT-FT) 137530 21480
CATEGORY DAY 5 2
INVERSION 41F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 87 GOOD 47 GEN GOOD 31 FAIR
MAX ADI LATE 105 VERY GOOD28 FAIR 32 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-192115-
CLARION-
INCLUDING THE CITY OF CLARION
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (-13) 15 (-21) 39
RH % (24H TREND) 69 (+22) 87 (-10) 48
WIND 20FT/EARLY(MPH) W 12 G27 W 13 G28 S 6
WIND 20FT/LATE(MPH) W 15 G29 W 7 G21 S 7 G18
PRECIP AMOUNT 0.16 0.00 0.00
PRECIP DURATION 5
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1300 490
MIXING HGT(FT-AGL/MSL)4250 1620
TRANSPORT WND (MPH) W 37 SW 12
VENT RATE (KT-FT) 145720 15850
CATEGORY DAY 5 2
INVERSION 39F/7AM NONE NONE
DISPERSION 5 4
MAX ADI EARLY 79 GOOD 44 GEN GOOD 29 FAIR
MAX ADI LATE 104 VERY GOOD31 FAIR 31 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-192115-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 43 (-8) 15 (-23) 38
RH % (24H TREND) 68 (+23) 84 (-11) 46
WIND 20FT/EARLY(MPH) W 14 G28 W 16 G30 SW 5
WIND 20FT/LATE(MPH) W 17 G31 W 10 G25 S 8 G17
PRECIP AMOUNT 0.17 0.00 0.00
PRECIP DURATION 5
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1300 510
MIXING HGT(FT-AGL/MSL)4280 1680
TRANSPORT WND (MPH) W 43 W 13
VENT RATE (KT-FT) 123540 17030
CATEGORY DAY 5 2
INVERSION 42F/7AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 67 GOOD 48 GEN GOOD 23 FAIR
MAX ADI LATE 107 VERY GOOD37 FAIR 26 FAIR
MAX LVORI EARLY 5 3 3
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-192115-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (-18) 17 (-20) 43
RH % (24H TREND) 62 (+31) 80 (-12) 41
WIND 20FT/EARLY(MPH) W 13 G27 W 12 G24 S 6
WIND 20FT/LATE(MPH) W 16 G29 SW 5 S 8 G17
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 2 PM
MIXING HGT(M-AGL/MSL) 1410 570
MIXING HGT(FT-AGL/MSL)4610 1870
TRANSPORT WND (MPH) W 38 S 18
VENT RATE (KT-FT) 132800 23370
CATEGORY DAY 5 3
INVERSION 42F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 91 GOOD 45 GEN GOOD 33 FAIR
MAX ADI LATE 104 VERY GOOD21 FAIR 32 FAIR
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.
PAZ021-192115-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 42 (-16) 18 (-21) 45
RH % (24H TREND) 63 (+26) 81 (-12) 43
WIND 20FT/EARLY(MPH) W 16 G29 W 14 G25 S 6
WIND 20FT/LATE(MPH) W 19 G30 SW 6 S 8
PRECIP AMOUNT 0.06 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 3 PM
MIXING HGT(M-AGL/MSL) 1450 550
MIXING HGT(FT-AGL/MSL)4770 1820
TRANSPORT WND (MPH) W 38 S 16
VENT RATE (KT-FT) 128900 17580
CATEGORY DAY 5 2
INVERSION 44F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 87 GOOD 48 GEN GOOD 30 FAIR
MAX ADI LATE 111 VERY GOOD27 FAIR 30 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-192115-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 42 (-14) 16 (-22) 43
RH % (24H TREND) 68 (+22) 86 (-10) 46
WIND 20FT/EARLY(MPH) W 14 G27 W 15 G28 S 5
WIND 20FT/LATE(MPH) W 17 G29 W 7 G21 S 6
PRECIP AMOUNT 0.13 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1340 500
MIXING HGT(FT-AGL/MSL)4380 1640
TRANSPORT WND (MPH) W 40 S 14
VENT RATE (KT-FT) 133300 24900
CATEGORY DAY 5 2
INVERSION 41F/7AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 77 GOOD 44 GEN GOOD 32 FAIR
MAX ADI LATE 108 VERY GOOD32 FAIR 30 FAIR
MAX LVORI EARLY 5 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-192115-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-17) 19 (-19) 47
RH % (24H TREND) 61 (+29) 79 (-12) 37
WIND 20FT/EARLY(MPH) W 17 G30 W 13 G25 S 7
WIND 20FT/LATE(MPH) W 19 G31 SW 6 S 9 G18
PRECIP AMOUNT 0.05 0.00 0.00
PRECIP DURATION 3
PRECIP BEGIN 6 AM
PRECIP END 2 PM
MIXING HGT(M-AGL/MSL) 1400 470
MIXING HGT(FT-AGL/MSL)4580 1530
TRANSPORT WND (MPH) W 40 S 17
VENT RATE (KT-FT) 148370 22100
CATEGORY DAY 5 2
INVERSION 43F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 96 GOOD 44 GEN GOOD 30 FAIR
MAX ADI LATE 113 VERY GOOD20 GEN POOR 30 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-192115-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 42 (-18) 20 (-19) 47
RH % (24H TREND) 62 (+34) 81 (-10) 37
WIND 20FT/EARLY(MPH) W 15 G29 W 11 G23 S 6
WIND 20FT/LATE(MPH) W 16 G30 SW 5 S 8 G17
PRECIP AMOUNT 0.07 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 2 PM
MIXING HGT(M-AGL/MSL) 1360 440
MIXING HGT(FT-AGL/MSL)4470 1460
TRANSPORT WND (MPH) W 39 S 16
VENT RATE (KT-FT) 140410 21010
CATEGORY DAY 5 2
INVERSION 44F/6AM 3AM 24F/8AM
DISPERSION 5 5
MAX ADI EARLY 99 GOOD 47 GEN GOOD 28 FAIR
MAX ADI LATE 113 VERY GOOD16 GEN POOR 29 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-192115-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 43 (-15) 17 (-23) 46
RH % (24H TREND) 66 (+24) 84 (-10) 41
WIND 20FT/EARLY(MPH) W 19 G29 W 17 G29 S 6
WIND 20FT/LATE(MPH) W 22 G31 W 8 G21 S 8
PRECIP AMOUNT 0.10 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1360 530
MIXING HGT(FT-AGL/MSL)4470 1730
TRANSPORT WND (MPH) W 39 S 14
VENT RATE (KT-FT) 128900 17030
CATEGORY DAY 5 2
INVERSION 45F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 84 GOOD 44 GEN GOOD 26 FAIR
MAX ADI LATE 105 VERY GOOD27 FAIR 27 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-192115-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 44 (-10) 16 (-24) 46
RH % (24H TREND) 63 (+22) 79 (-13) 37
WIND 20FT/EARLY(MPH) W 17 G32 W 19 G34 SW 5
WIND 20FT/LATE(MPH) W 20 G34 W 10 G28 S 6
PRECIP AMOUNT 0.18 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1350 520
MIXING HGT(FT-AGL/MSL)4420 1710
TRANSPORT WND (MPH) W 45 SW 13
VENT RATE (KT-FT) 156670 20010
CATEGORY DAY 5 2
INVERSION 45F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 79 GOOD 45 GEN GOOD 18 GEN POOR
MAX ADI LATE 112 VERY GOOD27 FAIR 20 GEN POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-192115-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 43 (-16) 19 (-22) 48
RH % (24H TREND) 64 (+32) 82 (-10) 36
WIND 20FT/EARLY(MPH) W 15 G27 W 12 G25 S 5
WIND 20FT/LATE(MPH) W 17 G28 SW 6 G17 S 6
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 3
PRECIP BEGIN 6 AM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1440 510
MIXING HGT(FT-AGL/MSL)4720 1680
TRANSPORT WND (MPH) W 40 S 14
VENT RATE (KT-FT) 130880 17740
CATEGORY DAY 5 2
INVERSION 45F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 96 GOOD 47 GEN GOOD 28 FAIR
MAX ADI LATE 114 VERY GOOD23 FAIR 28 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-192115-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-15) 17 (-21) 48
RH % (24H TREND) 66 (+31) 82 (-13) 34
WIND 20FT/EARLY(MPH) W 14 G30 W 13 G29 LGT/VAR
WIND 20FT/LATE(MPH) W 15 G31 W 7 G23 S 5
PRECIP AMOUNT 0.18 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1260 470
MIXING HGT(FT-AGL/MSL)4140 1550
TRANSPORT WND (MPH) W 44 SW 14
VENT RATE (KT-FT) 142340 21660
CATEGORY DAY 5 2
INVERSION 43F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 87 GOOD 45 GEN GOOD 14 GEN POOR
MAX ADI LATE 109 VERY GOOD18 GEN POOR 15 GEN POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-192115-
INDIANA-
INCLUDING THE CITY OF INDIANA
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 44 (-10) 16 (-24) 43
RH % (24H TREND) 67 (+24) 83 (-12) 44
WIND 20FT/EARLY(MPH) W 16 G30 W 18 G32 SW 5
WIND 20FT/LATE(MPH) W 19 G34 W 10 G27 S 7
PRECIP AMOUNT 0.14 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1310 460
MIXING HGT(FT-AGL/MSL)4290 1510
TRANSPORT WND (MPH) W 40 W 13
VENT RATE (KT-FT) 162470 14970
CATEGORY DAY 5 2
INVERSION 46F/6AM NONE NONE
DISPERSION 5 4
MAX ADI EARLY 70 GOOD 45 GEN GOOD 21 FAIR
MAX ADI LATE 111 VERY GOOD36 FAIR 23 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-192115-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 44 (-8) 16 (-25) 44
RH % (24H TREND) 66 (+22) 80 (-13) 41
WIND 20FT/EARLY(MPH) W 16 G32 W 19 G34 SW 5
WIND 20FT/LATE(MPH) W 19 G35 W 11 G29 S 6
PRECIP AMOUNT 0.17 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1280 440
MIXING HGT(FT-AGL/MSL)4200 1460
TRANSPORT WND (MPH) W 43 SW 12
VENT RATE (KT-FT) 159800 17440
CATEGORY DAY 5 2
INVERSION 44F/7AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 58 GEN GOOD 44 GEN GOOD 18 GEN POOR
MAX ADI LATE 113 VERY GOOD33 FAIR 20 GEN POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-192115-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (-18) 19 (-18) 44
RH % (24H TREND) 57 (+26) 75 (-15) 39
WIND 20FT/EARLY(MPH) W 14 G28 W 12 G24 S 7
WIND 20FT/LATE(MPH) W 16 G29 SW 5 S 9 G17
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 7 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1450 490
MIXING HGT(FT-AGL/MSL)4760 1610
TRANSPORT WND (MPH) W 37 S 18
VENT RATE (KT-FT) 131630 24350
CATEGORY DAY 5 2
INVERSION 42F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 93 GOOD 41 GEN GOOD 33 FAIR
MAX ADI LATE 105 VERY GOOD18 GEN POOR 33 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 1 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-192115-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-16) 20 (-17) 46
RH % (24H TREND) 57 (+24) 75 (-14) 36
WIND 20FT/EARLY(MPH) W 15 G30 W 12 G24 S 7
WIND 20FT/LATE(MPH) W 18 G30 SW 5 S 9 G18
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 7 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1480 480
MIXING HGT(FT-AGL/MSL)4870 1580
TRANSPORT WND (MPH) W 37 S 18
VENT RATE (KT-FT) 136770 23350
CATEGORY DAY 5 2
INVERSION 43F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 93 GOOD 45 GEN GOOD 33 FAIR
MAX ADI LATE 115 VERY GOOD19 GEN POOR 33 FAIR
MAX LVORI EARLY 4 2 4
MAX LVORI LATE 1 3 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-192115-
OHIO-
INCLUDING THE CITY OF WHEELING
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-17) 19 (-19) 46
RH % (24H TREND) 58 (+27) 78 (-12) 37
WIND 20FT/EARLY(MPH) W 16 G30 W 12 G24 S 7
WIND 20FT/LATE(MPH) W 18 G30 SW 6 S 9 G18
PRECIP AMOUNT 0.03 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1400 440
MIXING HGT(FT-AGL/MSL)4590 1450
TRANSPORT WND (MPH) W 38 S 18
VENT RATE (KT-FT) 139990 25960
CATEGORY DAY 5 2
INVERSION 43F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 94 GOOD 45 GEN GOOD 32 FAIR
MAX ADI LATE 113 VERY GOOD23 FAIR 30 FAIR
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.
WVZ004-192115-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-17) 21 (-17) 47
RH % (24H TREND) 60 (+31) 78 (-12) 38
WIND 20FT/EARLY(MPH) W 15 G30 W 10 G23 S 6
WIND 20FT/LATE(MPH) W 16 G30 SW 5 S 8 G18
PRECIP AMOUNT 0.04 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1380 460
MIXING HGT(FT-AGL/MSL)4530 1510
TRANSPORT WND (MPH) W 37 S 17
VENT RATE (KT-FT) 143340 28970
CATEGORY DAY 5 2
INVERSION 44F/6AM 3AM 28F/9AM
DISPERSION 5 5
MAX ADI EARLY 98 GOOD 46 GEN GOOD 29 FAIR
MAX ADI LATE 118 VERY GOOD11 POOR 30 FAIR
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.
WVZ012-192115-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-18) 21 (-18) 47
RH % (24H TREND) 61 (+30) 80 (-11) 39
WIND 20FT/EARLY(MPH) W 14 G30 W 9 G23 S 5
WIND 20FT/LATE(MPH) W 14 G29 LGT/VAR S 6
PRECIP AMOUNT 0.06 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 1 PM
MIXING HGT(M-AGL/MSL) 1390 440
MIXING HGT(FT-AGL/MSL)4580 1450
TRANSPORT WND (MPH) W 39 SW 15
VENT RATE (KT-FT) 133050 23990
CATEGORY DAY 5 2
INVERSION 44F/6AM 3AM 28F/9AM
DISPERSION 5 5
MAX ADI EARLY 100 GOOD 43 GEN GOOD 26 FAIR
MAX ADI LATE 112 VERY GOOD11 POOR 26 FAIR
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.
WVZ021-192115-
MARION-
INCLUDING THE CITY OF FAIRMONT
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 42 (-19) 21 (-18) 50
RH % (24H TREND) 65 (+34) 81 (-12) 36
WIND 20FT/EARLY(MPH) W 15 G29 W 10 G23 LGT/VAR
WIND 20FT/LATE(MPH) W 15 G29 LGT/VAR S 6
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1440 440
MIXING HGT(FT-AGL/MSL)4730 1440
TRANSPORT WND (MPH) W 40 SW 13
VENT RATE (KT-FT) 129050 21050
CATEGORY DAY 5 2
INVERSION 44F/6AM 3AM 23F/7AM
DISPERSION 5 5
MAX ADI EARLY 97 GOOD 44 GEN GOOD 22 FAIR
MAX ADI LATE 110 VERY GOOD11 POOR 23 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-192115-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 44 (-17) 20 (-20) 50
RH % (24H TREND) 64 (+36) 81 (-10) 35
WIND 20FT/EARLY(MPH) W 15 G29 W 10 G23 S 5
WIND 20FT/LATE(MPH) W 15 G29 SW 5 S 6
PRECIP AMOUNT 0.08 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 AM
PRECIP END 4 PM
MIXING HGT(M-AGL/MSL) 1450 480
MIXING HGT(FT-AGL/MSL)4760 1560
TRANSPORT WND (MPH) W 40 SW 14
VENT RATE (KT-FT) 128280 22200
CATEGORY DAY 5 2
INVERSION 45F/6AM 3AM 23F/7AM
DISPERSION 5 5
MAX ADI EARLY 96 GOOD 45 GEN GOOD 24 FAIR
MAX ADI LATE 112 VERY GOOD13 GEN POOR 25 FAIR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-192115-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-17) 19 (-20) 48
RH % (24H TREND) 67 (+33) 83 (-12) 34
WIND 20FT/EARLY(MPH) W 15 G29 W 12 G24 S 5
WIND 20FT/LATE(MPH) W 14 G29 W 6 G17 S 6
PRECIP AMOUNT 0.17 0.00 0.00
PRECIP DURATION 3
PRECIP BEGIN 6 AM
PRECIP END 5 PM
MIXING HGT(M-AGL/MSL) 1220 380
MIXING HGT(FT-AGL/MSL)4000 1240
TRANSPORT WND (MPH) W 41 SW 14
VENT RATE (KT-FT) 119940 15290
CATEGORY DAY 5 2
INVERSION 43F/6AM NONE NONE
DISPERSION 5 4
MAX ADI EARLY 88 GOOD 46 GEN GOOD 13 GEN POOR
MAX ADI LATE 112 VERY GOOD18 GEN POOR 14 GEN POOR
MAX LVORI EARLY 5 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-192115-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-17) 19 (-20) 50
RH % (24H TREND) 67 (+29) 84 (-12) 34
WIND 20FT/EARLY(MPH) W 14 G30 W 11 G25 LGT/VAR
WIND 20FT/LATE(MPH) W 14 G30 SW 5 G17 S 5
PRECIP AMOUNT 0.19 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1310 450
MIXING HGT(FT-AGL/MSL)4300 1490
TRANSPORT WND (MPH) W 41 SW 13
VENT RATE (KT-FT) 150020 20220
CATEGORY DAY 5 2
INVERSION 44F/6AM 2AM 28F/9AM
DISPERSION 5 5
MAX ADI EARLY 93 GOOD 46 GEN GOOD 15 GEN POOR
MAX ADI LATE 120 VERY GOOD17 GEN POOR 18 GEN POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-192115-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-15) 17 (-21) 49
RH % (24H TREND) 69 (+25) 88 (-9) 35
WIND 20FT/EARLY(MPH) W 16 G36 W 15 G32 S 5
WIND 20FT/LATE(MPH) W 17 G37 W 9 G24 S 6
PRECIP AMOUNT 0.24 0.00 0.00
PRECIP DURATION 5
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1220 370
MIXING HGT(FT-AGL/MSL)4000 1200
TRANSPORT WND (MPH) W 45 SW 12
VENT RATE (KT-FT) 138300 25010
CATEGORY DAY 5 1
INVERSION 43F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 87 GOOD 46 GEN GOOD 11 POOR
MAX ADI LATE 112 VERY GOOD21 FAIR 12 POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 4 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-192115-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 90 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (-16) 18 (-21) 52
RH % (24H TREND) 64 (+22) 86 (-8) 33
WIND 20FT/EARLY(MPH) W 16 G34 W 14 G32 LGT/VAR
WIND 20FT/LATE(MPH) W 17 G35 W 6 G23 S 6
PRECIP AMOUNT 0.21 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1320 470
MIXING HGT(FT-AGL/MSL)4340 1530
TRANSPORT WND (MPH) W 43 SW 12
VENT RATE (KT-FT) 147020 34840
CATEGORY DAY 5 2
INVERSION 44F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 93 GOOD 45 GEN GOOD 11 POOR
MAX ADI LATE 107 VERY GOOD18 GEN POOR 19 GEN POOR
MAX LVORI EARLY 4 3 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-192115-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1238 AM EST FRI DEC 19 2025
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE
CHANCE PRECIP (%) 80 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (-14) 14 (-23) 48
RH % (24H TREND) 74 (+34) 91 (-7) 37
WIND 20FT/EARLY(MPH) W 17 G52 W 19 G49 LGT/VAR
WIND 20FT/LATE(MPH) W 19 G53 W 10 G36 S 6 G21
PRECIP AMOUNT 0.27 0.00 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 AM
PRECIP END 6 PM
MIXING HGT(M-AGL/MSL) 1110 310
MIXING HGT(FT-AGL/MSL)3640 1030
TRANSPORT WND (MPH) W 51 SW 12
VENT RATE (KT-FT) 164700 37780
CATEGORY DAY 5 1
INVERSION 41F/6AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 100 GOOD 50 GEN GOOD 11 POOR
MAX ADI LATE 109 VERY GOOD30 FAIR 12 POOR
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 4 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS IN THE
LOWER 30S. WEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY. LOWS AROUND 17. HIGHS IN THE MID 30S.
NORTHEAST WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS IN THE UPPER
20S. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS 10 TO 15 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE
MID 40S. SOUTH WINDS 10 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS IN THE
UPPER 30S. HIGHS IN THE MID 50S. SOUTHWEST WINDS 5 TO 10 MPH.
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