674
FNUS51 KPBZ 181230
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
730 AM EST THU DEC 18 2025
DISCUSSION
HIGH PRESSURE WILL MAINTAIN DRY WEATHER BEFORE RAIN RETURNS
TONIGHT WITH A CROSSING COLD FRONT. RAIN WILL CHANGE TO SNOW
SHOWERS ON FRIDAY BEHIND THE FRONT, AS GUSTY WIND DEVELOPS.
OHZ039-182115-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW
CHANCE PRECIP (%) 0 100 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 53 (+6) 26 (-2) 34
RH % (24H TREND) 49 (+6) 100 (+13) 57
WIND 20FT/EARLY(MPH) S 8 G20 S 15 G29 W 17 G28
WIND 20FT/LATE(MPH) S 12 G23 SW 14 G26 W 16 G28
PRECIP AMOUNT 0.00 0.43 0.01
PRECIP DURATION 6 1
PRECIP BEGIN 6 PM 6 AM
PRECIP END 5 AM 1 PM
MIXING HGT(M-AGL/MSL) 700 1380
MIXING HGT(FT-AGL/MSL)2280 4530
TRANSPORT WND (MPH) S 25 W 37
VENT RATE (KT-FT) 62900 122390
CATEGORY DAY 3 5
INVERSION 47F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 30 FAIR 25 FAIR 100 GOOD
MAX ADI LATE 51 GEN GOOD 28 FAIR 105 VERY GOOD
MAX LVORI EARLY 4 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-182115-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW
CHANCE PRECIP (%) 0 100 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 53 (+6) 28 (-1) 34
RH % (24H TREND) 49 (+5) 100 (+15) 58
WIND 20FT/EARLY(MPH) S 8 G20 S 15 G29 W 18 G29
WIND 20FT/LATE(MPH) S 12 G23 SW 15 G26 W 18 G29
PRECIP AMOUNT 0.00 0.41 0.01
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 640 1330
MIXING HGT(FT-AGL/MSL)2090 4370
TRANSPORT WND (MPH) S 24 W 38
VENT RATE (KT-FT) 66690 130180
CATEGORY DAY 3 5
INVERSION 47F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 29 FAIR 25 FAIR 102 VERY GOOD
MAX ADI LATE 46 GEN GOOD 26 FAIR 108 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-182115-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SNOW/RAIN SNOW
CHANCE PRECIP (%) 0 100 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 52 (+5) 28 (-1) 35
RH % (24H TREND) 50 (+5) 100 (+11) 59
WIND 20FT/EARLY(MPH) S 8 G20 S 15 G29 W 18 G29
WIND 20FT/LATE(MPH) S 12 G23 SW 14 G26 W 18 G29
PRECIP AMOUNT 0.00 0.37 0.01
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 610 1360
MIXING HGT(FT-AGL/MSL)2010 4460
TRANSPORT WND (MPH) S 22 W 39
VENT RATE (KT-FT) 58780 133650
CATEGORY DAY 3 5
INVERSION 50F/12PM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 24 FAIR 25 FAIR 106 VERY GOOD
MAX ADI LATE 38 FAIR 27 FAIR 110 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-182115-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN NONE
CHANCE PRECIP (%) 0 100 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 53 (+5) 25 (-4) 32
RH % (24H TREND) 52 (+9) 100 (+9) 58
WIND 20FT/EARLY(MPH) S 7 G19 S 14 G28 W 16 G26
WIND 20FT/LATE(MPH) S 11 G23 SW 12 G25 W 14 G26
PRECIP AMOUNT 0.00 0.45 0.00
PRECIP DURATION 7
PRECIP BEGIN 6 PM
PRECIP END 6 AM
MIXING HGT(M-AGL/MSL) 690 1370
MIXING HGT(FT-AGL/MSL)2250 4490
TRANSPORT WND (MPH) S 25 W 36
VENT RATE (KT-FT) 61000 125610
CATEGORY DAY 3 5
INVERSION 51F/12PM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 24 FAIR 24 FAIR 102 VERY GOOD
MAX ADI LATE 51 GEN GOOD 26 FAIR 103 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-182115-
HARRISON-
INCLUDING THE CITY OF CADIZ
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW
CHANCE PRECIP (%) 0 100 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+6) 29 (-1) 35
RH % (24H TREND) 48 (+6) 100 (+14) 56
WIND 20FT/EARLY(MPH) S 7 G19 S 14 G28 W 17 G31
WIND 20FT/LATE(MPH) S 11 G23 SW 15 G27 W 17 G31
PRECIP AMOUNT 0.00 0.40 0.02
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 630 1350
MIXING HGT(FT-AGL/MSL)2070 4430
TRANSPORT WND (MPH) S 22 W 37
VENT RATE (KT-FT) 55450 130670
CATEGORY DAY 3 5
INVERSION 52F/12PM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 23 FAIR 24 FAIR 101 VERY GOOD
MAX ADI LATE 44 GEN GOOD 27 FAIR 105 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-182115-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+5) 30 (0) 36
RH % (24H TREND) 46 (+4) 100 (+18) 56
WIND 20FT/EARLY(MPH) S 7 G19 S 14 G28 W 18 G31
WIND 20FT/LATE(MPH) S 11 G22 SW 15 G27 W 17 G31
PRECIP AMOUNT 0.00 0.37 0.02
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 650 1380
MIXING HGT(FT-AGL/MSL)2130 4520
TRANSPORT WND (MPH) S 22 W 37
VENT RATE (KT-FT) 59140 138920
CATEGORY DAY 3 5
INVERSION 52F/12PM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 23 FAIR 23 FAIR 103 VERY GOOD
MAX ADI LATE 43 GEN GOOD 33 FAIR 106 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-182115-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN NONE
CHANCE PRECIP (%) 20 100 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+5) 26 (-1) 33
RH % (24H TREND) 50 (+8) 100 (+7) 58
WIND 20FT/EARLY(MPH) S 6 G18 S 13 G28 W 16 G27
WIND 20FT/LATE(MPH) S 11 G23 SW 13 G26 W 14 G26
PRECIP AMOUNT 0.01 0.42 0.00
PRECIP DURATION 0 7
PRECIP BEGIN 4 PM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(M-AGL/MSL) 670 1350
MIXING HGT(FT-AGL/MSL)2210 4430
TRANSPORT WND (MPH) S 25 W 36
VENT RATE (KT-FT) 67960 130070
CATEGORY DAY 3 5
INVERSION 48F/11AM 5PM 33F/6AM
DISPERSION 5 5
MAX ADI EARLY 24 FAIR 23 FAIR 102 VERY GOOD
MAX ADI LATE 50 GEN GOOD 27 FAIR 104 VERY GOOD
MAX LVORI EARLY 4 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-182115-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW
CHANCE PRECIP (%) 0 100 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+5) 28 (+4) 35
RH % (24H TREND) 46 (+8) 100 (+6) 56
WIND 20FT/EARLY(MPH) S 6 G19 S 12 G29 W 15 G29
WIND 20FT/LATE(MPH) S 10 G23 SW 12 G27 W 14 G28
PRECIP AMOUNT 0.00 0.43 0.01
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 720 1370
MIXING HGT(FT-AGL/MSL)2360 4500
TRANSPORT WND (MPH) S 25 W 36
VENT RATE (KT-FT) 59110 129070
CATEGORY DAY 3 5
INVERSION 49F/11AM 5PM 34F/6AM
DISPERSION 5 5
MAX ADI EARLY 31 FAIR 23 FAIR 103 VERY GOOD
MAX ADI LATE 55 GEN GOOD 27 FAIR 107 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-182115-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+5) 29 (-1) 38
RH % (24H TREND) 46 (+7) 100 (+19) 57
WIND 20FT/EARLY(MPH) S 7 G20 S 14 G29 W 17 G31
WIND 20FT/LATE(MPH) S 11 G23 SW 15 G28 W 17 G31
PRECIP AMOUNT 0.00 0.44 0.02
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 630 1380
MIXING HGT(FT-AGL/MSL)2070 4510
TRANSPORT WND (MPH) S 23 W 38
VENT RATE (KT-FT) 63760 140650
CATEGORY DAY 3 5
INVERSION 49F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 27 FAIR 23 FAIR 102 VERY GOOD
MAX ADI LATE 43 GEN GOOD 34 FAIR 109 VERY GOOD
MAX LVORI EARLY 4 5 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-182115-
NOBLE-
INCLUDING THE CITY OF CALDWELL
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW
CHANCE PRECIP (%) 30 100 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+4) 29 (+3) 36
RH % (24H TREND) 46 (+9) 100 (+6) 57
WIND 20FT/EARLY(MPH) S 5 G18 S 12 G29 W 15 G29
WIND 20FT/LATE(MPH) S 9 G23 SW 12 G27 W 13 G28
PRECIP AMOUNT 0.00 0.45 0.01
PRECIP DURATION 0 7 1
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 700 1360
MIXING HGT(FT-AGL/MSL)2280 4450
TRANSPORT WND (MPH) S 24 W 36
VENT RATE (KT-FT) 59690 126630
CATEGORY DAY 3 5
INVERSION 49F/11AM 5PM 35F/6AM
DISPERSION 5 5
MAX ADI EARLY 29 FAIR 23 FAIR 103 VERY GOOD
MAX ADI LATE 64 GOOD 33 FAIR 102 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-182115-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 20 100 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 56 (+4) 31 (+2) 37
RH % (24H TREND) 47 (+14) 100 (+13) 57
WIND 20FT/EARLY(MPH) S 5 G19 S 11 G28 W 14 G31
WIND 20FT/LATE(MPH) S 9 G23 SW 12 G28 W 13 G30
PRECIP AMOUNT 0.00 0.42 0.03
PRECIP DURATION 0 7 1
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 700 1370
MIXING HGT(FT-AGL/MSL)2280 4510
TRANSPORT WND (MPH) S 23 W 37
VENT RATE (KT-FT) 56040 137950
CATEGORY DAY 3 5
INVERSION 50F/11AM 5PM 37F/6AM
DISPERSION 5 5
MAX ADI EARLY 33 FAIR 22 FAIR 102 VERY GOOD
MAX ADI LATE 61 GOOD 34 FAIR 106 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-182115-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SNOW/RAIN SNOW
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 49 (+6) 27 (+2) 35
RH % (24H TREND) 62 (+7) 100 (+4) 66
WIND 20FT/EARLY(MPH) SE 9 G22 S 16 G29 W 18 G29
WIND 20FT/LATE(MPH) S 13 G23 SW 15 G27 W 19 G32
PRECIP AMOUNT 0.00 0.43 0.03
PRECIP DURATION 8 6
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 390 1280
MIXING HGT(FT-AGL/MSL)1290 4200
TRANSPORT WND (MPH) S 22 W 38
VENT RATE (KT-FT) 24620 145550
CATEGORY DAY 2 5
INVERSION 46F/12PM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 23 FAIR 25 FAIR 96 GOOD
MAX ADI LATE 31 FAIR 23 FAIR 108 VERY GOOD
MAX LVORI EARLY 5 5 5
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-182115-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW
CHANCE PRECIP (%) 0 100 80
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 49 (+6) 28 (+4) 35
RH % (24H TREND) 66 (+10) 100 (+1) 71
WIND 20FT/EARLY(MPH) SE 8 G19 S 13 G29 W 15 G28
WIND 20FT/LATE(MPH) S 10 G21 SW 13 G27 W 16 G29
PRECIP AMOUNT 0.00 0.46 0.05
PRECIP DURATION 7 7
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 420 1250
MIXING HGT(FT-AGL/MSL)1390 4090
TRANSPORT WND (MPH) S 20 W 38
VENT RATE (KT-FT) 27130 139780
CATEGORY DAY 2 5
INVERSION 45F/12PM 4PM 34F/6AM
DISPERSION 5 5
MAX ADI EARLY 23 FAIR 22 FAIR 94 GOOD
MAX ADI LATE 30 FAIR 21 FAIR 107 VERY GOOD
MAX LVORI EARLY 5 5 5
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-182115-
FOREST-
INCLUDING THE CITY OF TIONESTA
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 80
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 46 (+3) 28 (+4) 36
RH % (24H TREND) 63 (+9) 100 (+3) 71
WIND 20FT/EARLY(MPH) SE 8 G19 S 11 G28 W 13 G28
WIND 20FT/LATE(MPH) S 9 G20 SW 12 G28 W 14 G28
PRECIP AMOUNT 0.00 0.49 0.06
PRECIP DURATION 8 7
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 410 1290
MIXING HGT(FT-AGL/MSL)1360 4220
TRANSPORT WND (MPH) S 21 W 37
VENT RATE (KT-FT) 27180 141480
CATEGORY DAY 2 5
INVERSION 44F/12PM 4PM 35F/6AM
DISPERSION 5 5
MAX ADI EARLY 21 FAIR 21 FAIR 92 GOOD
MAX ADI LATE 30 FAIR 21 FAIR 108 VERY GOOD
MAX LVORI EARLY 5 5 5
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-182115-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 51 (+5) 28 (+3) 36
RH % (24H TREND) 57 (+8) 100 (+6) 61
WIND 20FT/EARLY(MPH) SE 7 G18 S 13 G26 W 16 G26
WIND 20FT/LATE(MPH) S 10 G20 SW 13 G25 W 17 G28
PRECIP AMOUNT 0.00 0.38 0.03
PRECIP DURATION 8 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 450 1370
MIXING HGT(FT-AGL/MSL)1490 4500
TRANSPORT WND (MPH) S 20 W 37
VENT RATE (KT-FT) 25860 123880
CATEGORY DAY 3 5
INVERSION 49F/12PM 4PM 34F/6AM
DISPERSION 5 5
MAX ADI EARLY 21 FAIR 25 FAIR 97 GOOD
MAX ADI LATE 33 FAIR 23 FAIR 109 VERY GOOD
MAX LVORI EARLY 5 5 5
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-182115-
BUTLER-
INCLUDING THE CITY OF BUTLER
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 52 (+6) 28 (+5) 37
RH % (24H TREND) 61 (+11) 100 (+2) 65
WIND 20FT/EARLY(MPH) SE 7 S 12 G26 W 16 G27
WIND 20FT/LATE(MPH) S 9 G19 SW 13 G25 W 17 G28
PRECIP AMOUNT 0.00 0.38 0.05
PRECIP DURATION 7 6
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 450 1290
MIXING HGT(FT-AGL/MSL)1470 4230
TRANSPORT WND (MPH) S 18 W 38
VENT RATE (KT-FT) 28950 139870
CATEGORY DAY 2 5
INVERSION 48F/12PM 4PM 35F/6AM
DISPERSION 5 5
MAX ADI EARLY 15 GEN POOR 21 FAIR 94 GOOD
MAX ADI LATE 31 FAIR 24 FAIR 108 VERY GOOD
MAX LVORI EARLY 7 5 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-182115-
CLARION-
INCLUDING THE CITY OF CLARION
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 80
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 48 (+4) 29 (+4) 37
RH % (24H TREND) 65 (+14) 100 (+3) 68
WIND 20FT/EARLY(MPH) SE 7 G19 SE 11 G28 W 14 G29
WIND 20FT/LATE(MPH) SE 9 G20 SW 13 G28 W 16 G30
PRECIP AMOUNT 0.00 0.45 0.05
PRECIP DURATION 7 7
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 380 1290
MIXING HGT(FT-AGL/MSL)1260 4230
TRANSPORT WND (MPH) S 18 W 37
VENT RATE (KT-FT) 27250 139070
CATEGORY DAY 2 5
INVERSION 46F/1PM 4PM 36F/6AM
DISPERSION 5 5
MAX ADI EARLY 16 GEN POOR 21 FAIR 89 GOOD
MAX ADI LATE 28 FAIR 22 FAIR 107 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-182115-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 80
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 46 (+2) 30 (+4) 39
RH % (24H TREND) 62 (+14) 100 (+6) 67
WIND 20FT/EARLY(MPH) SE 8 G19 SE 13 G28 W 16 G30
WIND 20FT/LATE(MPH) SE 10 G20 SW 15 G28 W 18 G31
PRECIP AMOUNT 0.00 0.43 0.05
PRECIP DURATION 8 6
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 380 1300
MIXING HGT(FT-AGL/MSL)1260 4250
TRANSPORT WND (MPH) S 21 W 39
VENT RATE (KT-FT) 28820 154040
CATEGORY DAY 2 5
INVERSION 44F/12PM 4PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 25 FAIR 21 FAIR 89 GOOD
MAX ADI LATE 29 FAIR 22 FAIR 111 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-182115-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 53 (+4) 30 (+1) 37
RH % (24H TREND) 49 (+5) 100 (+14) 59
WIND 20FT/EARLY(MPH) SE 6 S 12 G27 W 15 G28
WIND 20FT/LATE(MPH) S 9 G19 SW 13 G26 W 17 G29
PRECIP AMOUNT 0.00 0.34 0.03
PRECIP DURATION 8 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 660 1390
MIXING HGT(FT-AGL/MSL)2150 4570
TRANSPORT WND (MPH) S 21 W 36
VENT RATE (KT-FT) 54820 124050
CATEGORY DAY 3 5
INVERSION 50F/12PM 5PM 36F/6AM
DISPERSION 5 5
MAX ADI EARLY 21 FAIR 22 FAIR 99 GOOD
MAX ADI LATE 47 GEN GOOD 25 FAIR 108 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-182115-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 60
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+4) 32 (+3) 40
RH % (24H TREND) 52 (+9) 100 (+10) 60
WIND 20FT/EARLY(MPH) SE 6 S 12 G27 W 18 G29
WIND 20FT/LATE(MPH) S 9 G19 SW 14 G27 W 19 G31
PRECIP AMOUNT 0.00 0.31 0.04
PRECIP DURATION 7 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 660 1440
MIXING HGT(FT-AGL/MSL)2180 4740
TRANSPORT WND (MPH) S 20 W 35
VENT RATE (KT-FT) 47380 128900
CATEGORY DAY 3 5
INVERSION 51F/12PM 4PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 15 GEN POOR 19 GEN POOR 98 GOOD
MAX ADI LATE 42 GEN GOOD 26 FAIR 111 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-182115-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 51 (+4) 30 (+7) 40
RH % (24H TREND) 60 (+12) 100 (+1) 66
WIND 20FT/EARLY(MPH) SE 6 S 12 G27 W 16 G29
WIND 20FT/LATE(MPH) SE 9 G19 SW 13 G26 W 18 G30
PRECIP AMOUNT 0.00 0.36 0.06
PRECIP DURATION 8 6
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 430 1350
MIXING HGT(FT-AGL/MSL)1420 4420
TRANSPORT WND (MPH) S 18 W 39
VENT RATE (KT-FT) 33460 143250
CATEGORY DAY 2 5
INVERSION 48F/12PM 4PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 16 GEN POOR 20 GEN POOR 91 GOOD
MAX ADI LATE 28 FAIR 24 FAIR 111 VERY GOOD
MAX LVORI EARLY 8 5 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-182115-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+5) 31 (+4) 39
RH % (24H TREND) 47 (+6) 100 (+11) 58
WIND 20FT/EARLY(MPH) S 6 S 14 G28 W 20 G31
WIND 20FT/LATE(MPH) S 11 G20 SW 16 G28 W 19 G32
PRECIP AMOUNT 0.00 0.34 0.03
PRECIP DURATION 8 3
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 690 1370
MIXING HGT(FT-AGL/MSL)2250 4500
TRANSPORT WND (MPH) S 23 W 39
VENT RATE (KT-FT) 52510 151940
CATEGORY DAY 3 5
INVERSION 48F/11AM 5PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 23 FAIR 21 FAIR 102 VERY GOOD
MAX ADI LATE 45 GEN GOOD 29 FAIR 114 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 2 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-182115-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 56 (+4) 32 (+5) 40
RH % (24H TREND) 49 (+11) 100 (+11) 62
WIND 20FT/EARLY(MPH) S 5 S 12 G27 W 17 G30
WIND 20FT/LATE(MPH) S 9 G20 SW 14 G27 W 17 G30
PRECIP AMOUNT 0.00 0.34 0.04
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 760 1390
MIXING HGT(FT-AGL/MSL)2490 4550
TRANSPORT WND (MPH) S 23 W 39
VENT RATE (KT-FT) 58810 138420
CATEGORY DAY 3 5
INVERSION 50F/11AM 5PM 39F/6AM
DISPERSION 5 5
MAX ADI EARLY 35 FAIR 20 GEN POOR 95 GOOD
MAX ADI LATE 58 GEN GOOD 32 FAIR 114 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-182115-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+5) 32 (+6) 40
RH % (24H TREND) 55 (+10) 100 (+4) 63
WIND 20FT/EARLY(MPH) SE 6 S 14 G28 W 21 G31
WIND 20FT/LATE(MPH) S 10 G19 SW 16 G28 W 23 G31
PRECIP AMOUNT 0.00 0.32 0.05
PRECIP DURATION 9 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 470 1370
MIXING HGT(FT-AGL/MSL)1540 4490
TRANSPORT WND (MPH) S 17 W 39
VENT RATE (KT-FT) 41250 153660
CATEGORY DAY 2 5
INVERSION 51F/12PM 4PM 39F/6AM
DISPERSION 5 5
MAX ADI EARLY 16 GEN POOR 19 GEN POOR 96 GOOD
MAX ADI LATE 28 FAIR 25 FAIR 112 VERY GOOD
MAX LVORI EARLY 5 5 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-182115-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 51 (+3) 30 (0) 41
RH % (24H TREND) 46 (+2) 100 (+14) 61
WIND 20FT/EARLY(MPH) SE 9 G21 S 14 G32 W 19 G33
WIND 20FT/LATE(MPH) SE 10 G20 SW 16 G32 W 21 G34
PRECIP AMOUNT 0.00 0.35 0.08
PRECIP DURATION 10 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 400 1360
MIXING HGT(FT-AGL/MSL)1310 4460
TRANSPORT WND (MPH) S 21 W 43
VENT RATE (KT-FT) 34640 164220
CATEGORY DAY 2 5
INVERSION CONTINUING NONE NONE
DISPERSION 5 5
MAX ADI EARLY 26 FAIR 22 FAIR 104 VERY GOOD
MAX ADI LATE 27 FAIR 28 FAIR 120 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-182115-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 60
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 56 (+4) 33 (+4) 40
RH % (24H TREND) 49 (+5) 100 (+16) 63
WIND 20FT/EARLY(MPH) SE 5 S 11 G28 W 17 G28
WIND 20FT/LATE(MPH) S 9 G18 SW 14 G28 W 18 G28
PRECIP AMOUNT 0.00 0.31 0.05
PRECIP DURATION 9 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 580 1430
MIXING HGT(FT-AGL/MSL)1890 4680
TRANSPORT WND (MPH) S 18 W 39
VENT RATE (KT-FT) 50170 142190
CATEGORY DAY 3 5
INVERSION 49F/11AM 4PM 40F/6AM
DISPERSION 5 5
MAX ADI EARLY 19 GEN POOR 20 GEN POOR 100 GOOD
MAX ADI LATE 36 FAIR 27 FAIR 114 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-182115-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 52 (+4) 29 (-3) 39
RH % (24H TREND) 41 (-2) 100 (+19) 65
WIND 20FT/EARLY(MPH) SE 7 G18 S 11 G29 W 16 G29
WIND 20FT/LATE(MPH) S 8 G19 SW 13 G29 W 16 G30
PRECIP AMOUNT 0.00 0.35 0.07
PRECIP DURATION 9 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 410 1260
MIXING HGT(FT-AGL/MSL)1360 4120
TRANSPORT WND (MPH) S 18 W 41
VENT RATE (KT-FT) 25140 151540
CATEGORY DAY 2 5
INVERSION 50F/1PM 4PM 37F/6AM
DISPERSION 5 5
MAX ADI EARLY 17 GEN POOR 21 FAIR 96 GOOD
MAX ADI LATE 23 FAIR 28 FAIR 111 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-182115-
INDIANA-
INCLUDING THE CITY OF INDIANA
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 50 (+3) 31 (+7) 40
RH % (24H TREND) 58 (+14) 100 (+1) 65
WIND 20FT/EARLY(MPH) SE 8 G19 S 14 G30 W 18 G31
WIND 20FT/LATE(MPH) SE 10 G20 SW 16 G30 W 20 G33
PRECIP AMOUNT 0.00 0.37 0.06
PRECIP DURATION 9 6
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 380 1370
MIXING HGT(FT-AGL/MSL)1240 4490
TRANSPORT WND (MPH) S 21 W 41
VENT RATE (KT-FT) 33030 162470
CATEGORY DAY 2 5
INVERSION 48F/1PM 4PM 39F/6AM
DISPERSION 5 5
MAX ADI EARLY 24 FAIR 21 FAIR 94 GOOD
MAX ADI LATE 28 FAIR 24 FAIR 119 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-182115-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 70
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 49 (+2) 32 (+4) 40
RH % (24H TREND) 57 (+13) 100 (+8) 64
WIND 20FT/EARLY(MPH) SE 9 G21 SE 14 G32 W 18 G33
WIND 20FT/LATE(MPH) SE 11 G21 SW 16 G32 W 20 G34
PRECIP AMOUNT 0.00 0.34 0.06
PRECIP DURATION 10 5
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 6 PM
MIXING HGT(M-AGL/MSL) 350 1350
MIXING HGT(FT-AGL/MSL)1140 4430
TRANSPORT WND (MPH) S 22 W 43
VENT RATE (KT-FT) 31350 162500
CATEGORY DAY 2 5
INVERSION CONTINUING NONE NONE
DISPERSION 5 5
MAX ADI EARLY 27 FAIR 22 FAIR 95 GOOD
MAX ADI LATE 28 FAIR 23 FAIR 122 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-182115-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+5) 31 (0) 36
RH % (24H TREND) 47 (+6) 100 (+19) 56
WIND 20FT/EARLY(MPH) SE 6 S 13 G26 W 16 G28
WIND 20FT/LATE(MPH) S 10 G20 SW 14 G26 W 17 G29
PRECIP AMOUNT 0.00 0.33 0.02
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 720 1440
MIXING HGT(FT-AGL/MSL)2360 4730
TRANSPORT WND (MPH) S 23 W 37
VENT RATE (KT-FT) 63180 131630
CATEGORY DAY 3 5
INVERSION 47F/11AM 5PM 36F/6AM
DISPERSION 5 5
MAX ADI EARLY 24 FAIR 22 FAIR 103 VERY GOOD
MAX ADI LATE 52 GEN GOOD 27 FAIR 109 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-182115-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+5) 31 (-1) 37
RH % (24H TREND) 45 (+5) 100 (+20) 55
WIND 20FT/EARLY(MPH) S 6 G17 S 14 G27 W 18 G31
WIND 20FT/LATE(MPH) S 11 G21 SW 15 G26 W 18 G31
PRECIP AMOUNT 0.00 0.36 0.02
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 690 1430
MIXING HGT(FT-AGL/MSL)2250 4680
TRANSPORT WND (MPH) S 22 W 38
VENT RATE (KT-FT) 52490 147160
CATEGORY DAY 3 5
INVERSION 49F/11AM 5PM 37F/6AM
DISPERSION 5 5
MAX ADI EARLY 19 GEN POOR 22 FAIR 105 VERY GOOD
MAX ADI LATE 42 GEN GOOD 32 FAIR 110 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-182115-
OHIO-
INCLUDING THE CITY OF WHEELING
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+4) 31 (-1) 37
RH % (24H TREND) 45 (+8) 100 (+21) 58
WIND 20FT/EARLY(MPH) S 6 G17 S 14 G27 W 18 G31
WIND 20FT/LATE(MPH) S 12 G22 SW 16 G27 W 18 G31
PRECIP AMOUNT 0.00 0.38 0.02
PRECIP DURATION 8 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 680 1390
MIXING HGT(FT-AGL/MSL)2230 4570
TRANSPORT WND (MPH) S 22 W 38
VENT RATE (KT-FT) 62030 138510
CATEGORY DAY 3 5
INVERSION 49F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 22 FAIR 22 FAIR 102 VERY GOOD
MAX ADI LATE 43 GEN GOOD 29 FAIR 111 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 2 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-182115-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN
CHANCE PRECIP (%) 0 100 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 56 (+4) 32 (+1) 38
RH % (24H TREND) 48 (+11) 100 (+18) 61
WIND 20FT/EARLY(MPH) S 6 G17 S 12 G28 W 17 G31
WIND 20FT/LATE(MPH) S 10 G22 SW 14 G27 W 16 G30
PRECIP AMOUNT 0.00 0.39 0.04
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 720 1410
MIXING HGT(FT-AGL/MSL)2360 4610
TRANSPORT WND (MPH) S 23 W 38
VENT RATE (KT-FT) 61750 143000
CATEGORY DAY 3 5
INVERSION 50F/11AM 5PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 35 FAIR 21 FAIR 95 GOOD
MAX ADI LATE 52 GEN GOOD 33 FAIR 109 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-182115-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 20 100 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+4) 32 (+3) 37
RH % (24H TREND) 50 (+9) 100 (+10) 62
WIND 20FT/EARLY(MPH) S 5 S 12 G27 W 15 G30
WIND 20FT/LATE(MPH) S 8 G21 SW 13 G27 W 14 G29
PRECIP AMOUNT 0.00 0.37 0.03
PRECIP DURATION 0 7 1
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 710 1370
MIXING HGT(FT-AGL/MSL)2330 4480
TRANSPORT WND (MPH) S 22 W 37
VENT RATE (KT-FT) 51740 133050
CATEGORY DAY 3 5
INVERSION 49F/11AM 5PM 39F/6AM
DISPERSION 5 5
MAX ADI EARLY 34 FAIR 20 GEN POOR 92 GOOD
MAX ADI LATE 58 GEN GOOD 34 FAIR 106 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-182115-
MARION-
INCLUDING THE CITY OF FAIRMONT
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 30 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 56 (+4) 33 (+6) 38
RH % (24H TREND) 53 (+13) 100 (+4) 66
WIND 20FT/EARLY(MPH) LGT/VAR S 11 G26 W 17 G29
WIND 20FT/LATE(MPH) S 8 G19 SW 14 G27 W 15 G28
PRECIP AMOUNT 0.00 0.32 0.03
PRECIP DURATION 0 7 1
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 800 1340
MIXING HGT(FT-AGL/MSL)2620 4410
TRANSPORT WND (MPH) S 21 W 38
VENT RATE (KT-FT) 48260 130910
CATEGORY DAY 3 5
INVERSION 50F/11AM 5PM 39F/6AM
DISPERSION 5 5
MAX ADI EARLY 31 FAIR 18 GEN POOR 95 GOOD
MAX ADI LATE 58 GEN GOOD 27 FAIR 108 VERY GOOD
MAX LVORI EARLY 7 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-182115-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 30 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 56 (+4) 33 (+5) 40
RH % (24H TREND) 52 (+12) 100 (+10) 64
WIND 20FT/EARLY(MPH) S 5 S 11 G26 W 16 G29
WIND 20FT/LATE(MPH) S 8 G19 SW 14 G27 W 15 G28
PRECIP AMOUNT 0.00 0.33 0.03
PRECIP DURATION 0 8 2
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 720 1380
MIXING HGT(FT-AGL/MSL)2360 4510
TRANSPORT WND (MPH) S 21 W 38
VENT RATE (KT-FT) 55100 132220
CATEGORY DAY 3 5
INVERSION 50F/11AM 5PM 40F/6AM
DISPERSION 5 5
MAX ADI EARLY 29 FAIR 19 GEN POOR 93 GOOD
MAX ADI LATE 51 GEN GOOD 29 FAIR 109 VERY GOOD
MAX LVORI EARLY 5 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-182115-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 30 100 60
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 53 (+4) 31 (+1) 37
RH % (24H TREND) 48 (+9) 100 (+17) 67
WIND 20FT/EARLY(MPH) SE 6 S 12 G27 W 16 G29
WIND 20FT/LATE(MPH) S 8 G19 SW 14 G27 W 14 G28
PRECIP AMOUNT 0.00 0.37 0.05
PRECIP DURATION 0 8 5
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 370 1170
MIXING HGT(FT-AGL/MSL)1210 3830
TRANSPORT WND (MPH) S 17 W 39
VENT RATE (KT-FT) 23100 126510
CATEGORY DAY 2 5
INVERSION 52F/1PM 4PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 13 GEN POOR 20 GEN POOR 88 GOOD
MAX ADI LATE 21 FAIR 25 FAIR 102 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-182115-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 40 100 60
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 55 (+5) 32 (+2) 38
RH % (24H TREND) 53 (+13) 100 (+15) 67
WIND 20FT/EARLY(MPH) SE 5 G17 S 9 G26 W 15 G29
WIND 20FT/LATE(MPH) S 7 G17 SW 12 G26 W 14 G28
PRECIP AMOUNT 0.01 0.35 0.05
PRECIP DURATION 0 10 5
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 480 1250
MIXING HGT(FT-AGL/MSL)1580 4110
TRANSPORT WND (MPH) S 16 W 40
VENT RATE (KT-FT) 30570 150020
CATEGORY DAY 2 5
INVERSION 49F/11AM 4PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 21 FAIR 20 GEN POOR 95 GOOD
MAX ADI LATE 29 FAIR 27 FAIR 109 VERY GOOD
MAX LVORI EARLY 4 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-182115-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 50 100 60
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 52 (+4) 30 (-2) 38
RH % (24H TREND) 47 (+2) 100 (+23) 69
WIND 20FT/EARLY(MPH) SE 8 G20 S 12 G28 W 18 G34
WIND 20FT/LATE(MPH) S 8 G19 SW 15 G29 W 18 G34
PRECIP AMOUNT 0.01 0.35 0.07
PRECIP DURATION 0 11 5
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 430 1110
MIXING HGT(FT-AGL/MSL)1420 3650
TRANSPORT WND (MPH) S 17 W 43
VENT RATE (KT-FT) 29340 132230
CATEGORY DAY 2 5
INVERSION 50F/12PM 4PM 37F/6AM
DISPERSION 5 5
MAX ADI EARLY 19 GEN POOR 23 FAIR 95 GOOD
MAX ADI LATE 24 FAIR 32 FAIR 108 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-182115-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 60 100 60
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 54 (+5) 32 (+3) 39
RH % (24H TREND) 50 (+13) 100 (+17) 64
WIND 20FT/EARLY(MPH) S 7 G22 S 11 G30 W 18 G33
WIND 20FT/LATE(MPH) S 8 G20 SW 14 G30 W 17 G33
PRECIP AMOUNT 0.01 0.32 0.05
PRECIP DURATION 1 10 5
PRECIP BEGIN 3 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 570 1200
MIXING HGT(FT-AGL/MSL)1870 3940
TRANSPORT WND (MPH) S 20 W 44
VENT RATE (KT-FT) 43780 138690
CATEGORY DAY 3 5
INVERSION 49F/11AM 4PM 38F/6AM
DISPERSION 5 5
MAX ADI EARLY 24 FAIR 25 FAIR 98 GOOD
MAX ADI LATE 37 FAIR 30 FAIR 114 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-182115-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
730 AM EST THU DEC 18 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 60 100 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 51 (+5) 28 (-1) 36
RH % (24H TREND) 52 (+1) 100 (+25) 74
WIND 20FT/EARLY(MPH) S 9 G22 S 12 G36 W 20 G46
WIND 20FT/LATE(MPH) S 9 G25 SW 16 G41 W 20 G46
PRECIP AMOUNT 0.01 0.29 0.06
PRECIP DURATION 1 10 2
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 570 1050
MIXING HGT(FT-AGL/MSL)1880 3450
TRANSPORT WND (MPH) S 23 W 52
VENT RATE (KT-FT) 59450 152960
CATEGORY DAY 3 5
INVERSION 49F/1PM 4PM 36F/6AM
DISPERSION 5 5
MAX ADI EARLY 22 FAIR 25 FAIR 112 VERY GOOD
MAX ADI LATE 41 GEN GOOD 28 FAIR 121 VERY GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
SATURDAY
MOSTLY CLOUDY. LOWS AROUND 20. HIGHS IN THE MID 40S.
SOUTH WINDS AROUND 10 MPH.
SUNDAY
MOSTLY CLOUDY. COLDER. LOWS IN THE UPPER 20S. HIGHS IN
THE MID 30S. WEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY. LOWS AROUND 17. HIGHS IN THE LOWER 30S.
SOUTHWEST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN AND SNOW. LOWS IN
THE MID 20S. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS IN THE
LOWER 30S. HIGHS IN THE LOWER 40S. WEST WINDS 10 TO 15 MPH.
WM
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page