073
FNUS51 KPBZ 210621
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
121 AM EST WED JAN 21 2026
DISCUSSION
RAIN AND SNOW CHANCES RETURN TODAY AND THURSDAY. ACCUMULATING SNOW
WILL BE LARGELY ALONG THE I-80 CORRIDOR AND NORTH WHERE A WINTER
WEATHER ADVISORY IS IN EFFECT. PERIODIC SNOW CHANCES WILL THEN
FOLLOW THROUGH THE WEEKEND INTO NEXT WEEK, ALONG WITH THE RETURN
OF WELL BELOW NORMAL TEMPERATURES.
OHZ039-212130-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 70 40 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+20) 25 (+17) 33
RH % (24H TREND) 47 (+8) 92 (+24) 45
WIND 20FT/EARLY(MPH) S 9 G23 SW 11 G21 W 11 G21
WIND 20FT/LATE(MPH) SW 13 G23 SW 10 G20 W 10 G20
PRECIP AMOUNT 0.08 0.02 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 1 AM
MIXING HGT(M-AGL/MSL) 630 1280
MIXING HGT(FT-AGL/MSL)2050 4200
TRANSPORT WND (MPH) SW 28 W 22
VENT RATE (KT-FT) 54430 87840
CATEGORY DAY 3 4
INVERSION 20F/9AM 8PM 28F/4AM
DISPERSION 5 5
MAX ADI EARLY 49 GEN GOOD 23 FAIR 70 GOOD
MAX ADI LATE 53 GEN GOOD 25 FAIR 74 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-212130-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 80 50 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (+20) 26 (+18) 31
RH % (24H TREND) 47 (+6) 91 (+26) 46
WIND 20FT/EARLY(MPH) S 10 G23 SW 12 G22 W 12 G22
WIND 20FT/LATE(MPH) SW 14 G23 SW 12 G21 W 11 G21
PRECIP AMOUNT 0.08 0.02 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 1 AM
MIXING HGT(M-AGL/MSL) 710 1270
MIXING HGT(FT-AGL/MSL)2310 4160
TRANSPORT WND (MPH) SW 31 W 28
VENT RATE (KT-FT) 68990 103270
CATEGORY DAY 4 4
INVERSION 25F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 46 GEN GOOD 25 FAIR 76 GOOD
MAX ADI LATE 62 GOOD 27 FAIR 75 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-212130-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 80 50 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (+20) 25 (+18) 31
RH % (24H TREND) 47 (+6) 91 (+21) 47
WIND 20FT/EARLY(MPH) S 9 G23 SW 12 G22 W 12 G22
WIND 20FT/LATE(MPH) SW 13 G23 SW 11 G22 W 11 G21
PRECIP AMOUNT 0.07 0.03 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 760 1330
MIXING HGT(FT-AGL/MSL)2510 4360
TRANSPORT WND (MPH) SW 29 W 30
VENT RATE (KT-FT) 73550 132010
CATEGORY DAY 4 5
INVERSION 24F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 46 GEN GOOD 26 FAIR 84 GOOD
MAX ADI LATE 64 GOOD 25 FAIR 80 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-212130-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 70 20 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+20) 25 (+16) 31
RH % (24H TREND) 50 (+10) 93 (+28) 45
WIND 20FT/EARLY(MPH) S 8 G22 SW 10 G20 W 9 G18
WIND 20FT/LATE(MPH) SW 12 G22 SW 9 G19 W 9 G18
PRECIP AMOUNT 0.07 0.01 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 9 AM CONTINUING
PRECIP END CONTINUING 1 AM
MIXING HGT(M-AGL/MSL) 650 1300
MIXING HGT(FT-AGL/MSL)2120 4250
TRANSPORT WND (MPH) SW 24 W 22
VENT RATE (KT-FT) 50120 85980
CATEGORY DAY 3 4
INVERSION 20F/9AM 7PM 28F/4AM
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 23 FAIR 80 GOOD
MAX ADI LATE 48 GEN GOOD 22 FAIR 81 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-212130-
HARRISON-
INCLUDING THE CITY OF CADIZ
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 50 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+19) 27 (+20) 33
RH % (24H TREND) 46 (+8) 92 (+22) 44
WIND 20FT/EARLY(MPH) S 9 G23 SW 11 G22 W 11 G22
WIND 20FT/LATE(MPH) SW 13 G25 SW 11 G22 W 10 G22
PRECIP AMOUNT 0.09 0.03 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 700 1300
MIXING HGT(FT-AGL/MSL)2290 4280
TRANSPORT WND (MPH) SW 31 W 26
VENT RATE (KT-FT) 69190 110340
CATEGORY DAY 4 4
INVERSION 26F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 46 GEN GOOD 24 FAIR 75 GOOD
MAX ADI LATE 63 GOOD 27 FAIR 76 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-212130-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+20) 27 (+19) 33
RH % (24H TREND) 46 (+11) 90 (+27) 44
WIND 20FT/EARLY(MPH) S 9 G23 SW 12 G22 W 12 G22
WIND 20FT/LATE(MPH) SW 13 G25 SW 11 G22 W 10 G22
PRECIP AMOUNT 0.08 0.04 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 780 1370
MIXING HGT(FT-AGL/MSL)2550 4490
TRANSPORT WND (MPH) SW 30 W 26
VENT RATE (KT-FT) 76260 114250
CATEGORY DAY 4 5
INVERSION 25F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 44 GEN GOOD 24 FAIR 80 GOOD
MAX ADI LATE 67 GOOD 26 FAIR 78 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-212130-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 60 20 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+18) 26 (+16) 33
RH % (24H TREND) 47 (+7) 94 (+29) 44
WIND 20FT/EARLY(MPH) S 8 G22 SW 10 G21 W 9 G18
WIND 20FT/LATE(MPH) SW 12 G23 SW 9 G19 W 9 G19
PRECIP AMOUNT 0.06 0.01 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 11 PM
MIXING HGT(M-AGL/MSL) 600 1270
MIXING HGT(FT-AGL/MSL)1970 4160
TRANSPORT WND (MPH) SW 25 W 21
VENT RATE (KT-FT) 50620 81360
CATEGORY DAY 3 4
INVERSION 25F/10AM 7PM 29F/4AM
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 19 GEN POOR 84 GOOD
MAX ADI LATE 46 GEN GOOD 21 FAIR 76 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-212130-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 70 30 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+18) 27 (+18) 34
RH % (24H TREND) 46 (+10) 94 (+31) 43
WIND 20FT/EARLY(MPH) S 8 G23 SW 9 G22 W 9 G21
WIND 20FT/LATE(MPH) SW 11 G23 SW 9 G21 W 9 G20
PRECIP AMOUNT 0.07 0.02 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 12 AM
MIXING HGT(M-AGL/MSL) 650 1320
MIXING HGT(FT-AGL/MSL)2130 4330
TRANSPORT WND (MPH) SW 26 W 25
VENT RATE (KT-FT) 56400 107220
CATEGORY DAY 3 4
INVERSION 26F/10AM 8PM 30F/4AM
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 23 FAIR 79 GOOD
MAX ADI LATE 52 GEN GOOD 25 FAIR 80 GOOD
MAX LVORI EARLY 2 5 3
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-212130-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 50 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+18) 28 (+19) 35
RH % (24H TREND) 45 (+8) 96 (+31) 43
WIND 20FT/EARLY(MPH) S 9 G24 SW 11 G23 W 11 G22
WIND 20FT/LATE(MPH) SW 13 G26 SW 11 G22 W 10 G22
PRECIP AMOUNT 0.08 0.04 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 730 1320
MIXING HGT(FT-AGL/MSL)2410 4340
TRANSPORT WND (MPH) SW 31 W 23
VENT RATE (KT-FT) 83550 97730
CATEGORY DAY 4 4
INVERSION 27F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 43 GEN GOOD 23 FAIR 75 GOOD
MAX ADI LATE 65 GOOD 26 FAIR 72 GOOD
MAX LVORI EARLY 2 5 3
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-212130-
NOBLE-
INCLUDING THE CITY OF CALDWELL
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 70 40 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (+18) 28 (+19) 35
RH % (24H TREND) 45 (+11) 98 (+27) 42
WIND 20FT/EARLY(MPH) S 7 G22 SW 9 G22 W 9 G20
WIND 20FT/LATE(MPH) SW 10 G23 SW 9 G21 W 8 G20
PRECIP AMOUNT 0.07 0.02 0.00
PRECIP DURATION 3 1
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 12 AM
MIXING HGT(M-AGL/MSL) 670 1320
MIXING HGT(FT-AGL/MSL)2190 4330
TRANSPORT WND (MPH) SW 25 W 25
VENT RATE (KT-FT) 53660 101840
CATEGORY DAY 3 4
INVERSION 26F/10AM 8PM 30F/4AM
DISPERSION 5 5
MAX ADI EARLY 35 FAIR 22 FAIR 82 GOOD
MAX ADI LATE 51 GEN GOOD 23 FAIR 82 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-212130-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 70 50 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (+18) 29 (+19) 36
RH % (24H TREND) 45 (+10) 98 (+28) 43
WIND 20FT/EARLY(MPH) S 7 G23 SW 9 G23 W 9 G21
WIND 20FT/LATE(MPH) SW 10 G25 SW 9 G22 W 8 G21
PRECIP AMOUNT 0.08 0.04 0.00
PRECIP DURATION 4 1
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 700 1370
MIXING HGT(FT-AGL/MSL)2310 4500
TRANSPORT WND (MPH) SW 26 W 21
VENT RATE (KT-FT) 67550 89280
CATEGORY DAY 4 4
INVERSION 26F/10AM 9PM 31F/4AM
DISPERSION 5 5
MAX ADI EARLY 31 FAIR 22 FAIR 84 GOOD
MAX ADI LATE 54 GEN GOOD 22 FAIR 92 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-212130-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW SNOW
CHANCE PRECIP (%) 90 70 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (+19) 23 (+19) 29
RH % (24H TREND) 53 (+6) 99 (+26) 58
WIND 20FT/EARLY(MPH) S 10 G21 SW 11 G19 W 13 G23
WIND 20FT/LATE(MPH) SW 13 G22 SW 11 G21 W 12 G23
PRECIP AMOUNT 0.13 0.05 0.01
PRECIP DURATION 3 5 1
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 680 1380
MIXING HGT(FT-AGL/MSL)2220 4540
TRANSPORT WND (MPH) SW 26 W 29
VENT RATE (KT-FT) 57310 122640
CATEGORY DAY 4 5
INVERSION 21F/10AM 7PM 27F/6AM
DISPERSION 5 5
MAX ADI EARLY 39 FAIR 23 FAIR 84 GOOD
MAX ADI LATE 51 GEN GOOD 23 FAIR 84 GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 4 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-212130-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW SNOW
CHANCE PRECIP (%) 90 70 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (+20) 23 (+19) 29
RH % (24H TREND) 54 (+4) 100 (+28) 61
WIND 20FT/EARLY(MPH) S 8 G20 SW 9 G19 SW 11 G23
WIND 20FT/LATE(MPH) SW 10 G20 SW 10 G22 W 10 G23
PRECIP AMOUNT 0.14 0.09 0.01
PRECIP DURATION 4 5 1
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 720 1490
MIXING HGT(FT-AGL/MSL)2360 4900
TRANSPORT WND (MPH) SW 26 W 31
VENT RATE (KT-FT) 66620 141390
CATEGORY DAY 4 5
INVERSION 19F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 36 FAIR 23 FAIR 94 GOOD
MAX ADI LATE 54 GEN GOOD 27 FAIR 92 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 4 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-212130-
FOREST-
INCLUDING THE CITY OF TIONESTA
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW SNOW
CHANCE PRECIP (%) 90 80 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 32 (+20) 23 (+20) 29
RH % (24H TREND) 51 (0) 100 (+25) 59
WIND 20FT/EARLY(MPH) S 6 G19 SW 8 G20 SW 9 G23
WIND 20FT/LATE(MPH) S 8 G20 SW 9 G22 W 9 G23
PRECIP AMOUNT 0.18 0.11 0.02
PRECIP DURATION 5 6 1
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 1 PM
MIXING HGT(M-AGL/MSL) 740 1560
MIXING HGT(FT-AGL/MSL)2410 5130
TRANSPORT WND (MPH) S 26 W 33
VENT RATE (KT-FT) 64700 170420
CATEGORY DAY 4 5
INVERSION 18F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 39 FAIR 23 FAIR 107 VERY GOOD
MAX ADI LATE 53 GEN GOOD 27 FAIR 102 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 4 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-212130-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 90 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 35 (+19) 25 (+19) 31
RH % (24H TREND) 50 (+7) 95 (+25) 51
WIND 20FT/EARLY(MPH) S 8 G19 SW 10 G18 W 11 G21
WIND 20FT/LATE(MPH) SW 11 G20 SW 10 G19 W 10 G20
PRECIP AMOUNT 0.06 0.04 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 750 1370
MIXING HGT(FT-AGL/MSL)2460 4490
TRANSPORT WND (MPH) SW 26 W 29
VENT RATE (KT-FT) 67480 119180
CATEGORY DAY 4 5
INVERSION 22F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 39 FAIR 24 FAIR 85 GOOD
MAX ADI LATE 55 GEN GOOD 23 FAIR 86 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-212130-
BUTLER-
INCLUDING THE CITY OF BUTLER
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 90 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 34 (+19) 24 (+21) 32
RH % (24H TREND) 51 (+6) 98 (+25) 53
WIND 20FT/EARLY(MPH) S 7 G18 SW 10 G20 W 12 G22
WIND 20FT/LATE(MPH) SW 11 G21 SW 10 G21 W 10 G22
PRECIP AMOUNT 0.09 0.05 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 800 1460
MIXING HGT(FT-AGL/MSL)2640 4790
TRANSPORT WND (MPH) SW 26 W 30
VENT RATE (KT-FT) 82730 139260
CATEGORY DAY 4 5
INVERSION 22F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 37 FAIR 23 FAIR 92 GOOD
MAX ADI LATE 55 GEN GOOD 27 FAIR 89 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 4 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-212130-
CLARION-
INCLUDING THE CITY OF CLARION
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW SNOW
CHANCE PRECIP (%) 90 70 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (+20) 24 (+22) 30
RH % (24H TREND) 53 (+3) 99 (+26) 58
WIND 20FT/EARLY(MPH) S 6 G19 SW 9 G21 SW 11 G23
WIND 20FT/LATE(MPH) S 9 G21 SW 10 G22 W 10 G23
PRECIP AMOUNT 0.15 0.09 0.01
PRECIP DURATION 4 5 1
PRECIP BEGIN 11 AM CONTINUING 6 AM
PRECIP END CONTINUING 5 AM 1 PM
MIXING HGT(M-AGL/MSL) 730 1530
MIXING HGT(FT-AGL/MSL)2390 5030
TRANSPORT WND (MPH) S 22 W 32
VENT RATE (KT-FT) 57810 155420
CATEGORY DAY 3 5
INVERSION 19F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 36 FAIR 23 FAIR 100 GOOD
MAX ADI LATE 47 GEN GOOD 27 FAIR 97 GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 4 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-212130-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 90 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 33 (+21) 25 (+23) 30
RH % (24H TREND) 50 (+2) 97 (+21) 56
WIND 20FT/EARLY(MPH) S 6 G18 SW 10 G22 SW 13 G24
WIND 20FT/LATE(MPH) S 10 G21 SW 12 G23 W 11 G25
PRECIP AMOUNT 0.19 0.11 0.00
PRECIP DURATION 5 4
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 760 1510
MIXING HGT(FT-AGL/MSL)2490 4940
TRANSPORT WND (MPH) S 22 W 35
VENT RATE (KT-FT) 54540 170350
CATEGORY DAY 3 5
INVERSION 19F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 34 FAIR 24 FAIR 109 VERY GOOD
MAX ADI LATE 51 GEN GOOD 27 FAIR 105 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-212130-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 90 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (+19) 27 (+20) 33
RH % (24H TREND) 48 (+11) 92 (+25) 46
WIND 20FT/EARLY(MPH) S 7 G21 SW 10 G20 W 11 G21
WIND 20FT/LATE(MPH) SW 11 G23 SW 10 G21 W 10 G21
PRECIP AMOUNT 0.07 0.04 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 870 1440
MIXING HGT(FT-AGL/MSL)2840 4740
TRANSPORT WND (MPH) SW 30 W 29
VENT RATE (KT-FT) 87050 133180
CATEGORY DAY 4 5
INVERSION 24F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 41 GEN GOOD 23 FAIR 86 GOOD
MAX ADI LATE 68 GOOD 25 FAIR 84 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-212130-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (+22) 29 (+21) 34
RH % (24H TREND) 48 (+7) 96 (+28) 48
WIND 20FT/EARLY(MPH) S 7 G20 SW 11 G21 W 13 G22
WIND 20FT/LATE(MPH) SW 13 G23 SW 11 G22 W 11 G22
PRECIP AMOUNT 0.07 0.05 0.00
PRECIP DURATION 5 4
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 950 1520
MIXING HGT(FT-AGL/MSL)3110 4990
TRANSPORT WND (MPH) SW 31 W 30
VENT RATE (KT-FT) 99980 142410
CATEGORY DAY 4 5
INVERSION 25F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 37 FAIR 23 FAIR 93 GOOD
MAX ADI LATE 75 GOOD 24 FAIR 90 GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-212130-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 90 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 35 (+19) 27 (+22) 34
RH % (24H TREND) 50 (+5) 99 (+22) 54
WIND 20FT/EARLY(MPH) S 6 G18 SW 10 G21 SW 12 G23
WIND 20FT/LATE(MPH) SW 10 G22 SW 11 G22 W 11 G23
PRECIP AMOUNT 0.12 0.08 0.00
PRECIP DURATION 5 3
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 760 1530
MIXING HGT(FT-AGL/MSL)2500 5040
TRANSPORT WND (MPH) SW 21 W 32
VENT RATE (KT-FT) 60000 154300
CATEGORY DAY 3 5
INVERSION 22F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 34 FAIR 23 FAIR 101 VERY GOOD
MAX ADI LATE 49 GEN GOOD 27 FAIR 97 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-212130-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (+21) 28 (+20) 36
RH % (24H TREND) 46 (+6) 94 (+31) 45
WIND 20FT/EARLY(MPH) S 8 G22 SW 13 G22 W 13 G22
WIND 20FT/LATE(MPH) SW 14 G25 SW 13 G22 W 12 G23
PRECIP AMOUNT 0.09 0.06 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 910 1450
MIXING HGT(FT-AGL/MSL)2990 4750
TRANSPORT WND (MPH) SW 35 W 26
VENT RATE (KT-FT) 106490 122680
CATEGORY DAY 4 5
INVERSION 26F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 41 GEN GOOD 24 FAIR 90 GOOD
MAX ADI LATE 78 GOOD 26 FAIR 86 GOOD
MAX LVORI EARLY 2 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-212130-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (+22) 30 (+22) 36
RH % (24H TREND) 45 (+1) 97 (+29) 48
WIND 20FT/EARLY(MPH) S 7 G22 SW 11 G22 SW 11 G22
WIND 20FT/LATE(MPH) SW 12 G24 SW 11 G22 W 10 G21
PRECIP AMOUNT 0.09 0.08 0.00
PRECIP DURATION 5 4
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 920 1490
MIXING HGT(FT-AGL/MSL)3010 4890
TRANSPORT WND (MPH) SW 33 W 25
VENT RATE (KT-FT) 98340 117850
CATEGORY DAY 4 5
INVERSION 27F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 42 GEN GOOD 22 FAIR 86 GOOD
MAX ADI LATE 76 GOOD 25 FAIR 83 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-212130-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 90 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (+23) 29 (+22) 35
RH % (24H TREND) 47 (+4) 98 (+27) 51
WIND 20FT/EARLY(MPH) S 7 G18 SW 13 G22 SW 14 G23
WIND 20FT/LATE(MPH) SW 14 G23 SW 13 G23 W 13 G23
PRECIP AMOUNT 0.09 0.09 0.00
PRECIP DURATION 4 5
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(M-AGL/MSL) 810 1550
MIXING HGT(FT-AGL/MSL)2640 5080
TRANSPORT WND (MPH) SW 24 W 32
VENT RATE (KT-FT) 97210 161180
CATEGORY DAY 4 5
INVERSION 27F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 33 FAIR 20 GEN POOR 101 VERY GOOD
MAX ADI LATE 57 GEN GOOD 25 FAIR 99 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-212130-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 90 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (+23) 28 (+21) 34
RH % (24H TREND) 44 (+3) 96 (+30) 50
WIND 20FT/EARLY(MPH) S 6 G18 SW 12 G24 W 14 G27
WIND 20FT/LATE(MPH) SW 11 G23 SW 13 G27 W 13 G26
PRECIP AMOUNT 0.13 0.18 0.00
PRECIP DURATION 4 6
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(M-AGL/MSL) 820 1520
MIXING HGT(FT-AGL/MSL)2700 5000
TRANSPORT WND (MPH) SW 24 W 37
VENT RATE (KT-FT) 69260 166700
CATEGORY DAY 4 5
INVERSION 29F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 36 FAIR 23 FAIR 108 VERY GOOD
MAX ADI LATE 50 GEN GOOD 30 FAIR 105 VERY GOOD
MAX LVORI EARLY 2 4 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-212130-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (+23) 30 (+21) 36
RH % (24H TREND) 45 (+4) 98 (+35) 49
WIND 20FT/EARLY(MPH) S 6 G18 SW 11 G21 SW 12 G21
WIND 20FT/LATE(MPH) SW 12 G23 SW 11 G22 W 10 G21
PRECIP AMOUNT 0.08 0.10 0.00
PRECIP DURATION 4 4
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 870 1580
MIXING HGT(FT-AGL/MSL)2870 5170
TRANSPORT WND (MPH) SW 26 W 26
VENT RATE (KT-FT) 96540 133540
CATEGORY DAY 4 5
INVERSION 29F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 34 FAIR 21 FAIR 91 GOOD
MAX ADI LATE 58 GEN GOOD 23 FAIR 89 GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-212130-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (+23) 28 (+20) 34
RH % (24H TREND) 47 (+4) 100 (+36) 53
WIND 20FT/EARLY(MPH) S 5 G18 SW 10 G23 W 11 G23
WIND 20FT/LATE(MPH) SW 9 G23 SW 11 G24 W 10 G23
PRECIP AMOUNT 0.14 0.21 0.00
PRECIP DURATION 4 6
PRECIP BEGIN 1 PM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 790 1410
MIXING HGT(FT-AGL/MSL)2600 4620
TRANSPORT WND (MPH) SW 26 W 29
VENT RATE (KT-FT) 78550 134820
CATEGORY DAY 4 5
INVERSION 30F/11AM 6PM 30F/6AM
DISPERSION 5 5
MAX ADI EARLY 33 FAIR 20 GEN POOR 95 GOOD
MAX ADI LATE 53 GEN GOOD 29 FAIR 92 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-212130-
INDIANA-
INCLUDING THE CITY OF INDIANA
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 90 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+22) 28 (+22) 34
RH % (24H TREND) 49 (+1) 98 (+24) 53
WIND 20FT/EARLY(MPH) S 6 G18 SW 11 G23 W 14 G26
WIND 20FT/LATE(MPH) SW 11 G22 SW 13 G24 W 13 G26
PRECIP AMOUNT 0.15 0.12 0.00
PRECIP DURATION 4 4
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(M-AGL/MSL) 810 1540
MIXING HGT(FT-AGL/MSL)2640 5070
TRANSPORT WND (MPH) SW 24 W 35
VENT RATE (KT-FT) 84190 166280
CATEGORY DAY 4 5
INVERSION 28F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 31 FAIR 22 FAIR 110 VERY GOOD
MAX ADI LATE 50 GEN GOOD 28 FAIR 105 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-212130-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 90 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 36 (+22) 28 (+21) 34
RH % (24H TREND) 46 (0) 96 (+25) 52
WIND 20FT/EARLY(MPH) S 6 G18 SW 12 G23 W 14 G27
WIND 20FT/LATE(MPH) S 10 G21 SW 13 G26 W 13 G27
PRECIP AMOUNT 0.16 0.14 0.00
PRECIP DURATION 4 4
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(M-AGL/MSL) 730 1490
MIXING HGT(FT-AGL/MSL)2410 4870
TRANSPORT WND (MPH) SW 23 W 37
VENT RATE (KT-FT) 54270 165160
CATEGORY DAY 3 5
INVERSION 27F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 33 FAIR 21 FAIR 112 VERY GOOD
MAX ADI LATE 47 GEN GOOD 30 FAIR 111 VERY GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-212130-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+20) 27 (+19) 33
RH % (24H TREND) 47 (+9) 89 (+20) 45
WIND 20FT/EARLY(MPH) S 8 G21 SW 11 G19 W 11 G22
WIND 20FT/LATE(MPH) SW 12 G23 SW 11 G21 W 10 G21
PRECIP AMOUNT 0.06 0.03 0.00
PRECIP DURATION 4 2
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 830 1440
MIXING HGT(FT-AGL/MSL)2730 4720
TRANSPORT WND (MPH) SW 29 W 26
VENT RATE (KT-FT) 72130 121750
CATEGORY DAY 4 5
INVERSION 25F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 44 GEN GOOD 23 FAIR 78 GOOD
MAX ADI LATE 66 GOOD 24 FAIR 84 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-212130-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+19) 29 (+20) 34
RH % (24H TREND) 46 (+11) 91 (+34) 44
WIND 20FT/EARLY(MPH) S 8 G22 SW 12 G22 W 12 G22
WIND 20FT/LATE(MPH) SW 13 G25 SW 11 G22 W 11 G22
PRECIP AMOUNT 0.08 0.04 0.00
PRECIP DURATION 3 2
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 840 1430
MIXING HGT(FT-AGL/MSL)2740 4700
TRANSPORT WND (MPH) SW 30 W 25
VENT RATE (KT-FT) 77040 108720
CATEGORY DAY 4 4
INVERSION 27F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 44 GEN GOOD 24 FAIR 81 GOOD
MAX ADI LATE 70 GOOD 27 FAIR 79 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-212130-
OHIO-
INCLUDING THE CITY OF WHEELING
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 37 (+19) 29 (+20) 35
RH % (24H TREND) 46 (+11) 93 (+28) 44
WIND 20FT/EARLY(MPH) S 9 G22 SW 12 G22 W 12 G22
WIND 20FT/LATE(MPH) SW 14 G25 SW 12 G22 W 11 G22
PRECIP AMOUNT 0.08 0.05 0.00
PRECIP DURATION 3 3
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 820 1400
MIXING HGT(FT-AGL/MSL)2690 4600
TRANSPORT WND (MPH) SW 33 W 25
VENT RATE (KT-FT) 81370 107650
CATEGORY DAY 4 4
INVERSION 27F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 23 FAIR 79 GOOD
MAX ADI LATE 73 GOOD 25 FAIR 77 GOOD
MAX LVORI EARLY 2 4 3
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-212130-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (+19) 30 (+20) 35
RH % (24H TREND) 46 (+4) 96 (+37) 46
WIND 20FT/EARLY(MPH) S 8 G22 SW 11 G22 W 11 G22
WIND 20FT/LATE(MPH) SW 12 G25 SW 11 G22 W 10 G22
PRECIP AMOUNT 0.10 0.06 0.00
PRECIP DURATION 5 2
PRECIP BEGIN 7 AM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 820 1410
MIXING HGT(FT-AGL/MSL)2700 4640
TRANSPORT WND (MPH) SW 31 W 23
VENT RATE (KT-FT) 85140 103600
CATEGORY DAY 4 4
INVERSION 28F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 23 FAIR 79 GOOD
MAX ADI LATE 67 GOOD 23 FAIR 76 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-212130-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 70 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 38 (+20) 31 (+21) 36
RH % (24H TREND) 46 (+4) 98 (+32) 49
WIND 20FT/EARLY(MPH) S 6 G22 SW 10 G22 SW 10 G21
WIND 20FT/LATE(MPH) SW 10 G24 SW 10 G22 W 8 G21
PRECIP AMOUNT 0.10 0.08 0.00
PRECIP DURATION 4 3
PRECIP BEGIN 11 AM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT(M-AGL/MSL) 800 1400
MIXING HGT(FT-AGL/MSL)2630 4590
TRANSPORT WND (MPH) SW 29 W 23
VENT RATE (KT-FT) 73660 98600
CATEGORY DAY 4 4
INVERSION 28F/10AM 11PM 33F/4AM
DISPERSION 5 5
MAX ADI EARLY 38 FAIR 21 FAIR 76 GOOD
MAX ADI LATE 61 GOOD 25 FAIR 86 GOOD
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-212130-
MARION-
INCLUDING THE CITY OF FAIRMONT
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (+22) 31 (+23) 36
RH % (24H TREND) 44 (+2) 98 (+24) 52
WIND 20FT/EARLY(MPH) S 6 G19 SW 10 G21 SW 10 G21
WIND 20FT/LATE(MPH) SW 10 G23 SW 11 G22 W 9 G20
PRECIP AMOUNT 0.09 0.12 0.00
PRECIP DURATION 3 3
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 870 1460
MIXING HGT(FT-AGL/MSL)2840 4780
TRANSPORT WND (MPH) SW 29 W 24
VENT RATE (KT-FT) 78360 114390
CATEGORY DAY 4 5
INVERSION 28F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 20 GEN POOR 78 GOOD
MAX ADI LATE 64 GOOD 26 FAIR 89 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-212130-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE SNOW/RAIN SNOW/RAIN NONE
CHANCE PRECIP (%) 80 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 42 (+23) 31 (+22) 36
RH % (24H TREND) 44 (0) 98 (+34) 51
WIND 20FT/EARLY(MPH) S 6 G20 SW 10 G22 SW 10 G21
WIND 20FT/LATE(MPH) SW 10 G23 SW 11 G22 W 9 G20
PRECIP AMOUNT 0.10 0.12 0.00
PRECIP DURATION 4 4
PRECIP BEGIN 12 PM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 920 1540
MIXING HGT(FT-AGL/MSL)3010 5040
TRANSPORT WND (MPH) SW 30 W 25
VENT RATE (KT-FT) 91290 122070
CATEGORY DAY 4 5
INVERSION 29F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 45 GEN GOOD 22 FAIR 83 GOOD
MAX ADI LATE 71 GOOD 27 FAIR 94 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 3 5 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-212130-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (+24) 29 (+20) 34
RH % (24H TREND) 45 (0) 100 (+39) 55
WIND 20FT/EARLY(MPH) S 6 G19 SW 11 G22 W 11 G22
WIND 20FT/LATE(MPH) SW 9 G22 SW 12 G23 W 9 G21
PRECIP AMOUNT 0.12 0.19 0.00
PRECIP DURATION 4 4
PRECIP BEGIN 1 PM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 730 1330
MIXING HGT(FT-AGL/MSL)2390 4360
TRANSPORT WND (MPH) SW 26 W 26
VENT RATE (KT-FT) 65960 109970
CATEGORY DAY 4 4
INVERSION 32F/11AM 6PM 31F/6AM
DISPERSION 5 5
MAX ADI EARLY 29 FAIR 19 GEN POOR 79 GOOD
MAX ADI LATE 51 GEN GOOD 23 FAIR 92 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-212130-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW/RAIN NONE
CHANCE PRECIP (%) 80 80 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 41 (+25) 29 (+22) 35
RH % (24H TREND) 42 (-2) 100 (+29) 56
WIND 20FT/EARLY(MPH) S 5 G18 SW 8 G21 W 10 G22
WIND 20FT/LATE(MPH) SW 8 G20 SW 10 G22 W 9 G21
PRECIP AMOUNT 0.11 0.20 0.00
PRECIP DURATION 2 4
PRECIP BEGIN 1 PM CONTINUING
PRECIP END CONTINUING 3 AM
MIXING HGT(M-AGL/MSL) 940 1390
MIXING HGT(FT-AGL/MSL)3080 4560
TRANSPORT WND (MPH) SW 26 W 28
VENT RATE (KT-FT) 96310 124260
CATEGORY DAY 4 5
INVERSION 28F/10AM 11PM 32F/4AM
DISPERSION 5 5
MAX ADI EARLY 36 FAIR 20 GEN POOR 83 GOOD
MAX ADI LATE 56 GEN GOOD 29 FAIR 100 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 3 5 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-212130-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 70 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 40 (+26) 28 (+22) 34
RH % (24H TREND) 43 (-5) 100 (+29) 57
WIND 20FT/EARLY(MPH) S 6 G18 SW 11 G24 W 13 G27
WIND 20FT/LATE(MPH) SW 9 G22 W 13 G28 W 11 G25
PRECIP AMOUNT 0.12 0.23 0.00
PRECIP DURATION 2 4
PRECIP BEGIN 1 PM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 810 1280
MIXING HGT(FT-AGL/MSL)2660 4190
TRANSPORT WND (MPH) SW 24 W 30
VENT RATE (KT-FT) 88880 124610
CATEGORY DAY 4 5
INVERSION 27F/10AM 7PM 31F/6AM
DISPERSION 5 5
MAX ADI EARLY 31 FAIR 23 FAIR 84 GOOD
MAX ADI LATE 47 GEN GOOD 33 FAIR 86 GOOD
MAX LVORI EARLY 3 5 4
MAX LVORI LATE 2 4 2
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-212130-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 60 70 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 42 (+26) 29 (+21) 36
RH % (24H TREND) 39 (-2) 100 (+26) 53
WIND 20FT/EARLY(MPH) S 5 G19 SW 9 G23 W 12 G26
WIND 20FT/LATE(MPH) SW 9 G23 W 13 G25 W 10 G24
PRECIP AMOUNT 0.05 0.16 0.00
PRECIP DURATION 1 3
PRECIP BEGIN 2 PM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 1000 1270
MIXING HGT(FT-AGL/MSL)3280 4160
TRANSPORT WND (MPH) SW 29 W 30
VENT RATE (KT-FT) 101030 123160
CATEGORY DAY 4 5
INVERSION 28F/10AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 38 FAIR 25 FAIR 82 GOOD
MAX ADI LATE 68 GOOD 33 FAIR 85 GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 4 1
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-212130-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
121 AM EST WED JAN 21 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SNOW SNOW NONE
CHANCE PRECIP (%) 50 60 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 39 (+28) 25 (+21) 32
RH % (24H TREND) 40 (-11) 100 (+30) 60
WIND 20FT/EARLY(MPH) S 6 G23 SW 11 G34 W 15 G40
WIND 20FT/LATE(MPH) SW 10 G29 W 15 G40 W 12 G36
PRECIP AMOUNT 0.04 0.21 0.00
PRECIP DURATION 1 3
PRECIP BEGIN 3 PM CONTINUING
PRECIP END CONTINUING 4 AM
MIXING HGT(M-AGL/MSL) 890 1100
MIXING HGT(FT-AGL/MSL)2920 3620
TRANSPORT WND (MPH) SW 29 W 37
VENT RATE (KT-FT) 92480 135780
CATEGORY DAY 4 5
INVERSION 30F/11AM NONE NONE
DISPERSION 5 5
MAX ADI EARLY 37 FAIR 27 FAIR 87 GOOD
MAX ADI LATE 63 GOOD 40 FAIR 90 GOOD
MAX LVORI EARLY 3 4 4
MAX LVORI LATE 1 4 3
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY
MOSTLY CLOUDY. LOWS AROUND 15. HIGHS IN THE LOWER 20S.
WEST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. LOWS NEAR ZERO. HIGHS AROUND 12. NORTH
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SNOW LIKELY. LOWS AROUND 6. HIGHS
AROUND 19. EAST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. A CHANCE OF SNOW. LOWS AROUND 6. HIGHS
AROUND 18. WEST WINDS 10 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS AROUND 4. HIGHS IN THE LOWER 20S.
SOUTHWEST WINDS 10 TO 15 MPH.
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