839
FNUS51 KPBZ 211650
FWFPBZ
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE PITTSBURGH PA
1250 PM EDT THU MAY 21 2026
DISCUSSION
FIRE WEATHER POTENTIAL WILL REMAIN LOW INTO THE HOLIDAY WEEKEND
DUE TO SEVERAL WAVES OF RAIN ADVANCING INTO THE REGION. MINRH
VALUES WILL LIKELY STAY ABOVE 40 PERCENT FOR AT LEAST THE NEXT 5
DAYS.
FORECASTER: HEFFERAN
OHZ039-220815-
TUSCARAWAS-
INCLUDING THE CITIES OF NEW PHILADELPHIA AND DOVER
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 50 100 100
CHANCE OF THUNDER (%) 0 20 30 20
TEMP (24H TREND) 51 (+3) 68 (+1) 53 71
RH % (24H TREND) 87 (-8) 68 (+22) 96 75
WIND 20FT/EARLY(MPH) NE 6 E 8 E 11 G20 SE 11 G20
WIND 20FT/LATE(MPH) E 6 E 9 G17 E 11 G20 SE 10 G19
PRECIP AMOUNT 0.00 0.11 0.87 0.63
PRECIP DURATION 1 12 12
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 790 500
MIXING HGT(FT-AGL/MSL) 2590 1640
TRANSPORT WND (MPH) E 17 SE 18
VENT RATE (KT-FT) 38850 26240
CATEGORY DAY 3 3
INVERSION 8PM 56F/8AM 11PM 59F/9AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 44 GEN GOOD 22 FAIR 30 FAIR
MAX ADI LATE 11 POOR 47 GEN GOOD 16 GEN POOR 31 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ040-220815-
CARROLL-
INCLUDING THE CITIES OF CARROLLTON AND MALVERN
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 40 100 100
CHANCE OF THUNDER (%) 0 0 30 20
TEMP (24H TREND) 50 (+3) 68 (+2) 51 69
RH % (24H TREND) 85 (-7) 66 (+21) 96 76
WIND 20FT/EARLY(MPH) NE 7 E 9 G17 E 12 G21 SE 12 G22
WIND 20FT/LATE(MPH) E 8 E 11 E 12 G22 SE 11 G20
PRECIP AMOUNT 0.00 0.06 0.80 0.64
PRECIP DURATION 1 10 12
PRECIP BEGIN 12 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 830 480
MIXING HGT(FT-AGL/MSL) 2720 1580
TRANSPORT WND (MPH) SE 21 SE 18
VENT RATE (KT-FT) 48960 25280
CATEGORY DAY 3 2
INVERSION 8PM 55F/8AM NONE NONE
DISPERSION 3 2
MAX ADI EARLY 18 GEN POOR 39 FAIR 28 FAIR 27 FAIR
MAX ADI LATE 12 POOR 46 GEN GOOD 17 GEN POOR 32 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 4 3 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ041-220815-
COLUMBIANA-
INCLUDING THE CITIES OF EAST LIVERPOOL, SALEM, AND COLUMBIANA
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 40 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 49 (+1) 67 (+1) 49 66
RH % (24H TREND) 83 (-9) 63 (+18) 97 77
WIND 20FT/EARLY(MPH) NE 5 E 9 G17 E 11 G21 SE 12 G23
WIND 20FT/LATE(MPH) E 7 E 11 G18 E 12 G23 SE 12 G21
PRECIP AMOUNT 0.00 0.02 0.64 0.58
PRECIP DURATION 1 10 12
PRECIP BEGIN 1 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 890 480
MIXING HGT(FT-AGL/MSL) 2930 1560
TRANSPORT WND (MPH) SE 22 SE 21
VENT RATE (KT-FT) 55670 28080
CATEGORY DAY 4 3
INVERSION 8PM 55F/8AM NONE NONE
DISPERSION 4 3
MAX ADI EARLY 10 POOR 40 FAIR 29 FAIR 34 FAIR
MAX ADI LATE 12 POOR 51 GEN GOOD 20 GEN POOR 36 FAIR
MAX LVORI EARLY 3 3 3 5
MAX LVORI LATE 4 2 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ048-220815-
COSHOCTON-
INCLUDING THE CITY OF COSHOCTON
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 60 100 100
CHANCE OF THUNDER (%) 0 20 30 30
TEMP (24H TREND) 50 (+2) 68 (+2) 54 73
RH % (24H TREND) 87 (-10) 70 (+23) 99 77
WIND 20FT/EARLY(MPH) NE 5 E 6 E 9 G19 SE 9 G18
WIND 20FT/LATE(MPH) NE 5 E 8 E 9 G18 S 8 G17
PRECIP AMOUNT 0.00 0.12 0.96 0.59
PRECIP DURATION 2 11 12
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 680 620
MIXING HGT(FT-AGL/MSL) 2230 2020
TRANSPORT WND (MPH) E 16 S 15
VENT RATE (KT-FT) 31220 26260
CATEGORY DAY 3 3
INVERSION 8PM 56F/8AM 8PM 59F/8AM
DISPERSION 3 3
MAX ADI EARLY 19 GEN POOR 40 FAIR 21 FAIR 36 FAIR
MAX ADI LATE 8 POOR 42 GEN GOOD 15 GEN POOR 37 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ049-220815-
HARRISON-
INCLUDING THE CITY OF CADIZ
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 50 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 50 (+2) 68 (+1) 51 71
RH % (24H TREND) 88 (-9) 67 (+21) 98 76
WIND 20FT/EARLY(MPH) NE 7 E 9 G17 E 11 G20 SE 10 G20
WIND 20FT/LATE(MPH) E 8 E 10 G18 E 11 G20 SE 10 G19
PRECIP AMOUNT 0.00 0.13 0.87 0.60
PRECIP DURATION 1 12 12
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 760 560
MIXING HGT(FT-AGL/MSL) 2500 1830
TRANSPORT WND (MPH) E 18 SE 17
VENT RATE (KT-FT) 40000 27450
CATEGORY DAY 3 3
INVERSION 8PM 56F/8AM 10PM 58F/9AM
DISPERSION 3 3
MAX ADI EARLY 17 GEN POOR 44 GEN GOOD 22 FAIR 28 FAIR
MAX ADI LATE 12 POOR 46 GEN GOOD 16 GEN POOR 31 FAIR
MAX LVORI EARLY 4 4 4 5
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ050-220815-
JEFFERSON OH-
INCLUDING THE CITY OF STEUBENVILLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 50 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 51 (+3) 67 (0) 51 69
RH % (24H TREND) 85 (-11) 65 (+19) 96 77
WIND 20FT/EARLY(MPH) NE 7 E 9 G17 E 11 G20 SE 10 G20
WIND 20FT/LATE(MPH) E 8 E 10 G18 E 10 G20 SE 10 G19
PRECIP AMOUNT 0.00 0.07 0.83 0.59
PRECIP DURATION 1 11 12
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 820 480
MIXING HGT(FT-AGL/MSL) 2680 1580
TRANSPORT WND (MPH) E 20 SE 17
VENT RATE (KT-FT) 45560 23700
CATEGORY DAY 3 2
INVERSION 8PM 56F/8AM 11PM 53F/6AM
DISPERSION 3 2
MAX ADI EARLY 17 GEN POOR 50 GEN GOOD 23 FAIR 28 FAIR
MAX ADI LATE 11 POOR 45 GEN GOOD 15 GEN POOR 30 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ057-220815-
MUSKINGUM-
INCLUDING THE CITY OF ZANESVILLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 80 100 100
CHANCE OF THUNDER (%) 0 20 30 30
TEMP (24H TREND) 51 (+3) 69 (+1) 55 74
RH % (24H TREND) 91 (-6) 74 (+28) 100 76
WIND 20FT/EARLY(MPH) NE 5 E 5 E 8 G18 SE 9 G18
WIND 20FT/LATE(MPH) LGT/VAR E 7 SE 8 G18 S 8 G18
PRECIP AMOUNT 0.00 0.25 0.87 0.48
PRECIP DURATION 5 12 12
PRECIP BEGIN 8 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 580 710
MIXING HGT(FT-AGL/MSL) 1890 2320
TRANSPORT WND (MPH) E 15 S 16
VENT RATE (KT-FT) 24570 32480
CATEGORY DAY 3 3
INVERSION 8PM 57F/8AM 7PM 62F/9AM
DISPERSION 3 3
MAX ADI EARLY 10 POOR 29 FAIR 20 GEN POOR 39 FAIR
MAX ADI LATE 8 POOR 36 FAIR 14 GEN POOR 44 GEN GOOD
MAX LVORI EARLY 3 5 4 6
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ058-220815-
GUERNSEY-
INCLUDING THE CITY OF CAMBRIDGE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 70 100 100
CHANCE OF THUNDER (%) 0 20 30 20
TEMP (24H TREND) 51 (+3) 69 (+1) 54 74
RH % (24H TREND) 91 (-7) 70 (+24) 100 75
WIND 20FT/EARLY(MPH) NE 5 E 6 E 9 G19 SE 9 G19
WIND 20FT/LATE(MPH) E 5 E 8 G17 E 8 G19 S 9 G18
PRECIP AMOUNT 0.00 0.21 0.85 0.51
PRECIP DURATION 4 11 12
PRECIP BEGIN 8 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 670 650
MIXING HGT(FT-AGL/MSL) 2210 2140
TRANSPORT WND (MPH) E 16 S 16
VENT RATE (KT-FT) 30940 29960
CATEGORY DAY 3 3
INVERSION 8PM 57F/8AM 9PM 61F/9AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 37 FAIR 21 FAIR 36 FAIR
MAX ADI LATE 8 POOR 39 FAIR 14 GEN POOR 41 GEN GOOD
MAX LVORI EARLY 3 4 4 7
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ059-220815-
BELMONT-
INCLUDING THE CITIES OF MARTINS FERRY AND ST. CLAIRSVILLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 70 100 100
CHANCE OF THUNDER (%) 0 20 20 20
TEMP (24H TREND) 51 (+3) 68 (+2) 53 72
RH % (24H TREND) 92 (-7) 70 (+14) 100 79
WIND 20FT/EARLY(MPH) NE 7 E 8 G17 E 10 G20 SE 9 G20
WIND 20FT/LATE(MPH) E 7 E 9 G18 E 9 G20 SE 9 G19
PRECIP AMOUNT 0.00 0.19 0.74 0.53
PRECIP DURATION 4 12 12
PRECIP BEGIN 8 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 700 700
MIXING HGT(FT-AGL/MSL) 2290 2300
TRANSPORT WND (MPH) E 16 SE 17
VENT RATE (KT-FT) 32060 34500
CATEGORY DAY 3 3
INVERSION 8PM 57F/8AM 8PM 61F/10AM
DISPERSION 3 3
MAX ADI EARLY 19 GEN POOR 39 FAIR 21 FAIR 27 FAIR
MAX ADI LATE 11 POOR 39 FAIR 14 GEN POOR 39 FAIR
MAX LVORI EARLY 4 5 4 5
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ068-220815-
NOBLE-
INCLUDING THE CITY OF CALDWELL
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 80 100 100
CHANCE OF THUNDER (%) 0 20 30 20
TEMP (24H TREND) 51 (+2) 69 (+2) 54 74
RH % (24H TREND) 94 (-5) 75 (+20) 100 78
WIND 20FT/EARLY(MPH) NE 5 E 5 E 8 G18 SE 8 G19
WIND 20FT/LATE(MPH) E 5 E 7 SE 8 G18 S 8 G18
PRECIP AMOUNT 0.00 0.26 0.68 0.42
PRECIP DURATION 6 11 12
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 510 670
MIXING HGT(FT-AGL/MSL) 1680 2190
TRANSPORT WND (MPH) E 16 S 16
VENT RATE (KT-FT) 23520 30660
CATEGORY DAY 2 3
INVERSION 8PM 60F/9AM 7PM 61F/9AM
DISPERSION 2 3
MAX ADI EARLY 8 POOR 26 FAIR 19 GEN POOR 37 FAIR
MAX ADI LATE 8 POOR 34 FAIR 13 GEN POOR 42 GEN GOOD
MAX LVORI EARLY 4 5 4 8
MAX LVORI LATE 6 3 6 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
OHZ069-220815-
MONROE-
INCLUDING THE CITY OF WOODSFIELD
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 90 100 100
CHANCE OF THUNDER (%) 0 20 20 20
TEMP (24H TREND) 52 (+2) 69 (+3) 54 74
RH % (24H TREND) 93 (-6) 74 (+9) 100 79
WIND 20FT/EARLY(MPH) NE 5 E 5 E 8 G18 SE 7 G19
WIND 20FT/LATE(MPH) E 5 E 7 E 7 G18 S 7 G18
PRECIP AMOUNT 0.00 0.31 0.56 0.47
PRECIP DURATION 6 11 12
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 540 810
MIXING HGT(FT-AGL/MSL) 1760 2650
TRANSPORT WND (MPH) E 15 S 16
VENT RATE (KT-FT) 22880 37100
CATEGORY DAY 2 3
INVERSION 8PM 57F/8AM 8PM 62F/10AM
DISPERSION 2 3
MAX ADI EARLY 9 POOR 26 FAIR 19 GEN POOR 28 FAIR
MAX ADI LATE 8 POOR 34 FAIR 12 POOR 45 GEN GOOD
MAX LVORI EARLY 4 5 4 7
MAX LVORI LATE 5 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ007-220815-
MERCER-
INCLUDING THE CITIES OF SHARON, HERMITAGE, AND GROVE CITY
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 0 100 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 46 (-1) 67 (+1) 46 61
RH % (24H TREND) 72 (-20) 59 (+15) 100 79
WIND 20FT/EARLY(MPH) NE 5 E 10 G17 E 12 G21 SE 15 G25
WIND 20FT/LATE(MPH) E 7 E 11 G19 SE 14 G23 SE 15 G26
PRECIP AMOUNT 0.00 0.00 0.40 0.66
PRECIP DURATION 6 11
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 860 520
MIXING HGT(FT-AGL/MSL) 2810 1690
TRANSPORT WND (MPH) SE 22 SE 26
VENT RATE (KT-FT) 53390 38870
CATEGORY DAY 4 3
INVERSION 7PM 52F/8AM NONE NONE
DISPERSION 4 3
MAX ADI EARLY 9 POOR 36 FAIR 29 FAIR 46 GEN GOOD
MAX ADI LATE 13 GEN POOR 49 GEN GOOD 27 FAIR 47 GEN GOOD
MAX LVORI EARLY 3 3 3 4
MAX LVORI LATE 3 2 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ008-220815-
VENANGO-
INCLUDING THE CITIES OF OIL CITY AND FRANKLIN
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 0 100 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 45 (-1) 66 (0) 45 57
RH % (24H TREND) 68 (-26) 56 (+15) 100 81
WIND 20FT/EARLY(MPH) LGT/VAR E 7 G17 SE 10 G20 SE 13 G24
WIND 20FT/LATE(MPH) E 6 SE 9 G18 SE 11 G23 SE 12 G24
PRECIP AMOUNT 0.00 0.00 0.33 0.91
PRECIP DURATION 5 11
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 870 550
MIXING HGT(FT-AGL/MSL) 2870 1820
TRANSPORT WND (MPH) SE 21 SE 25
VENT RATE (KT-FT) 51660 40040
CATEGORY DAY 3 3
INVERSION 8PM 50F/8AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 8 POOR 46 GEN GOOD 25 FAIR 45 GEN GOOD
MAX ADI LATE 12 POOR 59 GEN GOOD 23 FAIR 46 GEN GOOD
MAX LVORI EARLY 3 3 3 4
MAX LVORI LATE 3 1 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ009-220815-
FOREST-
INCLUDING THE CITY OF TIONESTA
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 0 90 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 43 (-3) 65 (0) 43 56
RH % (24H TREND) 66 (-26) 51 (+13) 99 77
WIND 20FT/EARLY(MPH) LGT/VAR E 6 SE 8 G20 SE 11 G24
WIND 20FT/LATE(MPH) LGT/VAR SE 7 G17 SE 9 G23 SE 11 G25
PRECIP AMOUNT 0.00 0.00 0.28 1.15
PRECIP DURATION 5 12
PRECIP BEGIN 7 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 890 580
MIXING HGT(FT-AGL/MSL) 2920 1910
TRANSPORT WND (MPH) SE 18 SE 25
VENT RATE (KT-FT) 46720 42020
CATEGORY DAY 3 3
INVERSION 8PM 48F/8AM 3AM 48F/4AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 49 GEN GOOD 24 FAIR 47 GEN GOOD
MAX ADI LATE 8 POOR 59 GEN GOOD 24 FAIR 49 GEN GOOD
MAX LVORI EARLY 3 3 3 4
MAX LVORI LATE 3 1 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ013-220815-
LAWRENCE-
INCLUDING THE CITIES OF NEW CASTLE AND ELLWOOD CITY
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 0 0 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 48 (0) 68 (+2) 48 64
RH % (24H TREND) 80 (-12) 59 (+13) 100 77
WIND 20FT/EARLY(MPH) LGT/VAR E 9 G17 E 11 G21 E 13 G23
WIND 20FT/LATE(MPH) E 6 E 11 G18 SE 13 G23 SE 13 G22
PRECIP AMOUNT 0.00 0.00 0.46 0.60
PRECIP DURATION 8 11
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 930 520
MIXING HGT(FT-AGL/MSL) 3050 1710
TRANSPORT WND (MPH) SE 23 SE 24
VENT RATE (KT-FT) 61000 35910
CATEGORY DAY 4 3
INVERSION 8PM 54F/8AM NONE NONE
DISPERSION 4 3
MAX ADI EARLY 8 POOR 43 GEN GOOD 31 FAIR 43 GEN GOOD
MAX ADI LATE 13 GEN POOR 54 GEN GOOD 26 FAIR 44 GEN GOOD
MAX LVORI EARLY 3 3 4 4
MAX LVORI LATE 4 1 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ014-220815-
BUTLER-
INCLUDING THE CITY OF BUTLER
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 0 100 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 46 (-2) 66 (0) 45 61
RH % (24H TREND) 81 (-14) 63 (+16) 100 82
WIND 20FT/EARLY(MPH) E 5 E 9 G17 E 11 G20 E 13 G23
WIND 20FT/LATE(MPH) E 7 E 10 G19 E 12 G22 SE 13 G22
PRECIP AMOUNT 0.00 0.00 0.47 0.67
PRECIP DURATION 8 11
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 870 530
MIXING HGT(FT-AGL/MSL) 2870 1740
TRANSPORT WND (MPH) SE 22 SE 24
VENT RATE (KT-FT) 54530 36540
CATEGORY DAY 4 3
INVERSION 8PM 53F/8AM NONE NONE
DISPERSION 4 3
MAX ADI EARLY 8 POOR 42 GEN GOOD 29 FAIR 42 GEN GOOD
MAX ADI LATE 13 GEN POOR 52 GEN GOOD 24 FAIR 43 GEN GOOD
MAX LVORI EARLY 3 3 4 4
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ015-220815-
CLARION-
INCLUDING THE CITY OF CLARION
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 0 100 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 45 (-3) 65 (-1) 44 57
RH % (24H TREND) 74 (-18) 56 (+14) 100 79
WIND 20FT/EARLY(MPH) LGT/VAR E 8 G17 SE 10 G20 SE 13 G24
WIND 20FT/LATE(MPH) E 6 SE 9 G18 SE 11 G23 SE 12 G24
PRECIP AMOUNT 0.00 0.00 0.36 1.09
PRECIP DURATION 6 11
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 830 570
MIXING HGT(FT-AGL/MSL) 2710 1870
TRANSPORT WND (MPH) SE 21 SE 24
VENT RATE (KT-FT) 48780 39270
CATEGORY DAY 3 3
INVERSION 8PM 49F/7AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 8 POOR 45 GEN GOOD 26 FAIR 46 GEN GOOD
MAX ADI LATE 13 GEN POOR 54 GEN GOOD 23 FAIR 47 GEN GOOD
MAX LVORI EARLY 3 3 3 4
MAX LVORI LATE 3 1 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ016-220815-
JEFFERSON PA-
INCLUDING THE CITIES OF PUNXSUTAWNEY AND BROOKVILLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 0 100 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 44 (-4) 64 (-1) 43 55
RH % (24H TREND) 73 (-17) 55 (+12) 97 78
WIND 20FT/EARLY(MPH) LGT/VAR E 8 G18 SE 10 G21 E 14 G26
WIND 20FT/LATE(MPH) E 6 SE 10 G18 SE 12 G24 SE 14 G26
PRECIP AMOUNT 0.00 0.00 0.34 0.90
PRECIP DURATION 7 12
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 820 570
MIXING HGT(FT-AGL/MSL) 2680 1870
TRANSPORT WND (MPH) SE 20 SE 25
VENT RATE (KT-FT) 45560 41140
CATEGORY DAY 3 3
INVERSION 8PM 48F/6AM 9PM 46F/6AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 43 GEN GOOD 23 FAIR 46 GEN GOOD
MAX ADI LATE 12 POOR 44 GEN GOOD 24 FAIR 48 GEN GOOD
MAX LVORI EARLY 3 3 3 4
MAX LVORI LATE 3 1 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ020-220815-
BEAVER-
INCLUDING THE CITIES OF ALIQUIPPA, BEAVER FALLS, AMBRIDGE,
AND MONACA
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 30 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 51 (+2) 67 (-1) 50 64
RH % (24H TREND) 79 (-16) 63 (+20) 96 78
WIND 20FT/EARLY(MPH) E 5 E 9 G17 E 11 G20 E 12 G22
WIND 20FT/LATE(MPH) E 6 E 10 G18 E 11 G21 SE 11 G20
PRECIP AMOUNT 0.00 0.01 0.64 0.59
PRECIP DURATION 1 11 12
PRECIP BEGIN 1 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 920 560
MIXING HGT(FT-AGL/MSL) 3010 1820
TRANSPORT WND (MPH) SE 22 SE 21
VENT RATE (KT-FT) 57190 32760
CATEGORY DAY 4 3
INVERSION 8PM 55F/8AM 11PM 54F/4AM
DISPERSION 4 3
MAX ADI EARLY 8 POOR 54 GEN GOOD 29 FAIR 36 FAIR
MAX ADI LATE 12 POOR 53 GEN GOOD 22 FAIR 37 FAIR
MAX LVORI EARLY 3 3 4 4
MAX LVORI LATE 4 2 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ021-220815-
ALLEGHENY-
INCLUDING THE CITY OF PITTSBURGH METRO AREA
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 40 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 51 (+2) 66 (0) 49 64
RH % (24H TREND) 83 (-14) 68 (+15) 99 79
WIND 20FT/EARLY(MPH) E 7 E 10 G17 E 12 G20 E 12 G22
WIND 20FT/LATE(MPH) E 7 E 12 G19 E 11 G20 SE 12 G21
PRECIP AMOUNT 0.00 0.02 0.67 0.56
PRECIP DURATION 1 11 11
PRECIP BEGIN 1 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 870 560
MIXING HGT(FT-AGL/MSL) 2850 1820
TRANSPORT WND (MPH) SE 22 SE 21
VENT RATE (KT-FT) 54150 32760
CATEGORY DAY 4 3
INVERSION 8PM 55F/7AM NONE NONE
DISPERSION 4 3
MAX ADI EARLY 16 GEN POOR 41 GEN GOOD 27 FAIR 35 FAIR
MAX ADI LATE 11 POOR 49 GEN GOOD 16 GEN POOR 37 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ022-220815-
ARMSTRONG-
INCLUDING THE CITIES OF KITTANNING AND FORD CITY
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 20 100 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 48 (-1) 65 (-1) 45 60
RH % (24H TREND) 82 (-14) 62 (+11) 100 80
WIND 20FT/EARLY(MPH) LGT/VAR E 9 G18 E 10 G20 E 13 G23
WIND 20FT/LATE(MPH) E 6 E 10 G19 E 11 G23 SE 13 G23
PRECIP AMOUNT 0.00 0.00 0.46 0.69
PRECIP DURATION 0 9 11
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 850 570
MIXING HGT(FT-AGL/MSL) 2800 1860
TRANSPORT WND (MPH) SE 20 SE 25
VENT RATE (KT-FT) 47600 40920
CATEGORY DAY 3 3
INVERSION 8PM 50F/5AM 8PM 48F/6AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 42 GEN GOOD 26 FAIR 43 GEN GOOD
MAX ADI LATE 12 POOR 48 GEN GOOD 21 FAIR 45 GEN GOOD
MAX LVORI EARLY 4 3 4 4
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ029-220815-
WASHINGTON-
INCLUDING THE CITIES OF WASHINGTON AND CANONSBURG
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 50 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 51 (+2) 65 (+1) 50 67
RH % (24H TREND) 88 (-9) 71 (+7) 96 79
WIND 20FT/EARLY(MPH) E 7 E 9 G17 E 11 G21 SE 11 G21
WIND 20FT/LATE(MPH) E 7 E 10 G19 E 10 G20 SE 11 G19
PRECIP AMOUNT 0.00 0.08 0.72 0.49
PRECIP DURATION 1 12 12
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 760 510
MIXING HGT(FT-AGL/MSL) 2490 1660
TRANSPORT WND (MPH) E 20 SE 18
VENT RATE (KT-FT) 42330 26560
CATEGORY DAY 3 3
INVERSION 9PM 56F/8AM 8PM 55F/8AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 42 GEN GOOD 22 FAIR 29 FAIR
MAX ADI LATE 12 POOR 42 GEN GOOD 15 GEN POOR 33 FAIR
MAX LVORI EARLY 4 4 4 5
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ031-220815-
GREENE-
INCLUDING THE CITY OF WAYNESBURG
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 30 70 90 90
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 51 (0) 65 (+3) 51 68
RH % (24H TREND) 91 (-8) 76 (-1) 96 78
WIND 20FT/EARLY(MPH) NE 6 E 6 E 9 G19 SE 9 G19
WIND 20FT/LATE(MPH) LGT/VAR E 8 E 8 G18 SE 8 G17
PRECIP AMOUNT 0.00 0.17 0.58 0.40
PRECIP DURATION 1 4 11 11
PRECIP BEGIN 6 PM 9 AM CONTINUING CONTINUING
PRECIP END 10 PM CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 630 530
MIXING HGT(FT-AGL/MSL) 2080 1730
TRANSPORT WND (MPH) E 17 SE 17
VENT RATE (KT-FT) 31200 25950
CATEGORY DAY 3 3
INVERSION 8PM 57F/8AM 8PM 57F/9AM
DISPERSION 3 3
MAX ADI EARLY 10 POOR 42 GEN GOOD 21 FAIR 25 FAIR
MAX ADI LATE 8 POOR 42 GEN GOOD 14 GEN POOR 34 FAIR
MAX LVORI EARLY 4 5 4 6
MAX LVORI LATE 5 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ073-220815-
WESTMORELAND-
INCLUDING THE CITIES OF MURRYSVILLE, GREENSBURG, NEW KENSINGTON,
LOWER BURRELL, LATROBE, AND MONESSEN
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 40 90 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 50 (-1) 65 (+2) 47 63
RH % (24H TREND) 91 (-7) 69 (+3) 100 77
WIND 20FT/EARLY(MPH) E 6 E 10 G20 E 12 G23 SE 15 G28
WIND 20FT/LATE(MPH) E 6 E 12 G21 SE 13 G26 SE 16 G28
PRECIP AMOUNT 0.00 0.02 0.59 0.53
PRECIP DURATION 1 12 11
PRECIP BEGIN 12 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 800 530
MIXING HGT(FT-AGL/MSL) 2630 1720
TRANSPORT WND (MPH) SE 21 SE 22
VENT RATE (KT-FT) 47340 32680
CATEGORY DAY 3 3
INVERSION 8PM 56F/8AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 16 GEN POOR 40 FAIR 22 FAIR 34 FAIR
MAX ADI LATE 11 POOR 42 GEN GOOD 17 GEN POOR 37 FAIR
MAX LVORI EARLY 4 4 4 5
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ074-220815-
HIGHER ELEVATIONS OF WESTMORELAND-
INCLUDING THE CITIES OF LIGONIER AND DONEGAL
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 50 90 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 48 (-3) 64 (+5) 46 61
RH % (24H TREND) 90 (-10) 64 (-11) 95 71
WIND 20FT/EARLY(MPH) E 5 SE 10 G23 SE 14 G26 SE 17 G29
WIND 20FT/LATE(MPH) E 6 G19 SE 12 G22 SE 15 G27 SE 16 G28
PRECIP AMOUNT 0.00 0.03 0.50 0.50
PRECIP DURATION 0 1 12 11
PRECIP BEGIN 6 PM 12 PM CONTINUING CONTINUING
PRECIP END 8 PM CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 610 520
MIXING HGT(FT-AGL/MSL) 2010 1720
TRANSPORT WND (MPH) SE 23 SE 24
VENT RATE (KT-FT) 40200 36120
CATEGORY DAY 3 3
INVERSION 8PM 53F/7AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 8 POOR 40 FAIR 23 FAIR 41 GEN GOOD
MAX ADI LATE 12 POOR 43 GEN GOOD 22 FAIR 43 GEN GOOD
MAX LVORI EARLY 4 4 3 4
MAX LVORI LATE 5 3 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ075-220815-
FAYETTE-
INCLUDING THE CITY OF UNIONTOWN
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 30 60 90 90
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 50 (-2) 65 (+3) 49 66
RH % (24H TREND) 92 (-4) 73 (-3) 98 75
WIND 20FT/EARLY(MPH) E 5 E 8 G19 SE 11 G25 SE 13 G26
WIND 20FT/LATE(MPH) LGT/VAR SE 10 G20 SE 12 G26 SE 12 G24
PRECIP AMOUNT 0.00 0.07 0.53 0.40
PRECIP DURATION 1 2 10 9
PRECIP BEGIN 6 PM 9 AM CONTINUING CONTINUING
PRECIP END 10 PM CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 650 460
MIXING HGT(FT-AGL/MSL) 2120 1510
TRANSPORT WND (MPH) SE 20 SE 20
VENT RATE (KT-FT) 36040 25670
CATEGORY DAY 3 3
INVERSION 8PM 57F/8AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 8 POOR 38 FAIR 21 FAIR 29 FAIR
MAX ADI LATE 8 POOR 39 FAIR 18 GEN POOR 32 FAIR
MAX LVORI EARLY 4 5 4 5
MAX LVORI LATE 5 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ076-220815-
HIGHER ELEVATIONS OF FAYETTE-
INCLUDING THE CITIES OF CHAMPION AND OHIOPYLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 30 60 90 90
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 48 (-5) 62 (+5) 46 62
RH % (24H TREND) 97 (-2) 71 (-13) 97 72
WIND 20FT/EARLY(MPH) LGT/VAR SE 9 G21 SE 11 G25 SE 13 G26
WIND 20FT/LATE(MPH) E 5 G17 SE 10 G21 SE 12 G26 SE 11 G26
PRECIP AMOUNT 0.00 0.05 0.46 0.35
PRECIP DURATION 1 3 10 9
PRECIP BEGIN 6 PM 9 AM CONTINUING CONTINUING
PRECIP END 12 AM CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 530 430
MIXING HGT(FT-AGL/MSL) 1730 1400
TRANSPORT WND (MPH) SE 23 SE 23
VENT RATE (KT-FT) 34600 28000
CATEGORY DAY 3 3
INVERSION 8PM 53F/7AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 9 POOR 40 FAIR 25 FAIR 36 FAIR
MAX ADI LATE 12 POOR 45 GEN GOOD 21 FAIR 36 FAIR
MAX LVORI EARLY 5 4 4 5
MAX LVORI LATE 5 3 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ077-220815-
INDIANA-
INCLUDING THE CITY OF INDIANA
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 30 90 100
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 47 (-2) 65 (+2) 44 59
RH % (24H TREND) 83 (-15) 63 (+5) 100 77
WIND 20FT/EARLY(MPH) E 5 E 9 G19 E 11 G23 SE 15 G27
WIND 20FT/LATE(MPH) E 6 G17 E 11 G20 E 13 G25 SE 15 G27
PRECIP AMOUNT 0.00 0.00 0.44 0.64
PRECIP DURATION 0 10 11
PRECIP BEGIN 3 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 790 560
MIXING HGT(FT-AGL/MSL) 2590 1840
TRANSPORT WND (MPH) SE 20 SE 25
VENT RATE (KT-FT) 44030 40480
CATEGORY DAY 3 3
INVERSION 8PM 50F/5AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 8 POOR 38 FAIR 21 FAIR 44 GEN GOOD
MAX ADI LATE 13 GEN POOR 45 GEN GOOD 20 GEN POOR 46 GEN GOOD
MAX LVORI EARLY 4 3 4 4
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
PAZ078-220815-
HIGHER ELEVATIONS OF INDIANA-
INCLUDING THE CITY OF ARMAGH
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 40 90 100
CHANCE OF THUNDER (%) 0 0 0 10
TEMP (24H TREND) 48 (-2) 64 (+4) 45 58
RH % (24H TREND) 83 (-17) 64 (-1) 97 75
WIND 20FT/EARLY(MPH) E 5 E 9 G21 SE 12 G23 SE 16 G28
WIND 20FT/LATE(MPH) E 6 G17 SE 11 G21 SE 14 G26 SE 16 G28
PRECIP AMOUNT 0.00 0.01 0.44 0.60
PRECIP DURATION 1 10 11
PRECIP BEGIN 1 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 700 560
MIXING HGT(FT-AGL/MSL) 2290 1820
TRANSPORT WND (MPH) SE 21 SE 25
VENT RATE (KT-FT) 41220 40040
CATEGORY DAY 3 3
INVERSION 8PM 52F/7AM NONE NONE
DISPERSION 3 3
MAX ADI EARLY 8 POOR 37 FAIR 21 FAIR 45 GEN GOOD
MAX ADI LATE 13 GEN POOR 43 GEN GOOD 21 FAIR 48 GEN GOOD
MAX LVORI EARLY 4 4 4 4
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ001-220815-
HANCOCK-
INCLUDING THE CITY OF WEIRTON
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 40 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 52 (+4) 67 (-1) 51 65
RH % (24H TREND) 79 (-16) 65 (+22) 94 76
WIND 20FT/EARLY(MPH) E 6 E 8 G17 E 11 G20 E 10 G20
WIND 20FT/LATE(MPH) E 7 E 10 G18 E 10 G20 SE 10 G19
PRECIP AMOUNT 0.00 0.03 0.78 0.59
PRECIP DURATION 1 11 12
PRECIP BEGIN 1 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 850 460
MIXING HGT(FT-AGL/MSL) 2780 1490
TRANSPORT WND (MPH) SE 20 SE 20
VENT RATE (KT-FT) 47260 25330
CATEGORY DAY 3 3
INVERSION 8PM 56F/8AM 1AM 54F/5AM
DISPERSION 3 3
MAX ADI EARLY 15 GEN POOR 53 GEN GOOD 29 FAIR 31 FAIR
MAX ADI LATE 12 POOR 58 GEN GOOD 16 GEN POOR 32 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 4 3 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ002-220815-
BROOKE-
INCLUDING THE CITIES OF FOLLANSBEE AND WELLSBURG
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 50 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 52 (+4) 67 (0) 52 69
RH % (24H TREND) 81 (-14) 66 (+14) 92 77
WIND 20FT/EARLY(MPH) E 7 E 9 E 11 G20 E 10 G19
WIND 20FT/LATE(MPH) E 8 E 10 G18 E 10 G19 SE 9 G18
PRECIP AMOUNT 0.00 0.08 0.83 0.56
PRECIP DURATION 1 11 12
PRECIP BEGIN 11 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 790 500
MIXING HGT(FT-AGL/MSL) 2610 1620
TRANSPORT WND (MPH) E 18 SE 18
VENT RATE (KT-FT) 41760 25920
CATEGORY DAY 3 3
INVERSION 9PM 57F/8AM 11PM 57F/9AM
DISPERSION 3 3
MAX ADI EARLY 18 GEN POOR 51 GEN GOOD 22 FAIR 28 FAIR
MAX ADI LATE 12 POOR 46 GEN GOOD 15 GEN POOR 33 FAIR
MAX LVORI EARLY 3 4 4 5
MAX LVORI LATE 4 3 4 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ003-220815-
OHIO-
INCLUDING THE CITY OF WHEELING
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 0 60 100 100
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 52 (+3) 67 (+2) 52 70
RH % (24H TREND) 86 (-10) 70 (+9) 95 80
WIND 20FT/EARLY(MPH) NE 8 E 8 G17 E 11 G20 SE 10 G20
WIND 20FT/LATE(MPH) E 8 E 9 G18 E 10 G20 SE 9 G19
PRECIP AMOUNT 0.00 0.13 0.69 0.49
PRECIP DURATION 3 12 12
PRECIP BEGIN 10 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 730 500
MIXING HGT(FT-AGL/MSL) 2410 1630
TRANSPORT WND (MPH) E 18 SE 17
VENT RATE (KT-FT) 38560 24450
CATEGORY DAY 3 3
INVERSION 9PM 57F/8AM 8PM 57F/9AM
DISPERSION 3 3
MAX ADI EARLY 19 GEN POOR 45 GEN GOOD 22 FAIR 26 FAIR
MAX ADI LATE 12 POOR 49 GEN GOOD 15 GEN POOR 34 FAIR
MAX LVORI EARLY 4 4 4 5
MAX LVORI LATE 4 3 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ004-220815-
MARSHALL-
INCLUDING THE CITY OF MOUNDSVILLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 70 100 100
CHANCE OF THUNDER (%) 0 20 20 20
TEMP (24H TREND) 53 (+3) 68 (+4) 53 72
RH % (24H TREND) 88 (-12) 75 (+6) 95 80
WIND 20FT/EARLY(MPH) NE 7 E 7 E 10 G20 SE 9 G20
WIND 20FT/LATE(MPH) E 6 E 8 G17 E 9 G19 SE 8 G18
PRECIP AMOUNT 0.00 0.22 0.60 0.51
PRECIP DURATION 5 12 12
PRECIP BEGIN 7 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 620 710
MIXING HGT(FT-AGL/MSL) 2050 2330
TRANSPORT WND (MPH) E 16 SE 16
VENT RATE (KT-FT) 28700 32620
CATEGORY DAY 3 3
INVERSION 8PM 58F/8AM 8PM 62F/11AM
DISPERSION 3 3
MAX ADI EARLY 19 GEN POOR 36 FAIR 20 GEN POOR 24 FAIR
MAX ADI LATE 11 POOR 39 FAIR 14 GEN POOR 41 GEN GOOD
MAX LVORI EARLY 4 4 4 5
MAX LVORI LATE 5 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ012-220815-
WETZEL-
INCLUDING THE CITY OF NEW MARTINSVILLE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY CLOUDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 30 90 90 90
CHANCE OF THUNDER (%) 0 20 20 20
TEMP (24H TREND) 53 (+2) 67 (+5) 53 73
RH % (24H TREND) 92 (-7) 79 (0) 97 80
WIND 20FT/EARLY(MPH) NE 5 E 6 E 8 G19 SE 7 G18
WIND 20FT/LATE(MPH) E 5 E 6 E 8 G18 SE 6 G17
PRECIP AMOUNT 0.00 0.29 0.54 0.42
PRECIP DURATION 0 7 11 12
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 520 800
MIXING HGT(FT-AGL/MSL) 1720 2640
TRANSPORT WND (MPH) E 16 S 16
VENT RATE (KT-FT) 24080 36960
CATEGORY DAY 2 3
INVERSION 8PM 58F/8AM 8PM 63F/11AM
DISPERSION 2 3
MAX ADI EARLY 8 POOR 28 FAIR 19 GEN POOR 24 FAIR
MAX ADI LATE 8 POOR 34 FAIR 13 GEN POOR 47 GEN GOOD
MAX LVORI EARLY 4 5 4 6
MAX LVORI LATE 5 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ021-220815-
MARION-
INCLUDING THE CITY OF FAIRMONT
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 90 80 90
CHANCE OF THUNDER (%) 0 20 20 20
TEMP (24H TREND) 52 (-1) 65 (+3) 52 70
RH % (24H TREND) 97 (-1) 77 (-8) 99 79
WIND 20FT/EARLY(MPH) NE 5 E 6 E 8 G20 SE 8 G20
WIND 20FT/LATE(MPH) LGT/VAR E 6 E 8 G20 SE 7 G17
PRECIP AMOUNT 0.01 0.21 0.37 0.30
PRECIP DURATION 1 7 11 11
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 510 720
MIXING HGT(FT-AGL/MSL) 1690 2370
TRANSPORT WND (MPH) E 17 SE 16
VENT RATE (KT-FT) 25350 33180
CATEGORY DAY 3 3
INVERSION 8PM 56F/8AM 8PM 62F/11AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 30 FAIR 18 GEN POOR 22 FAIR
MAX ADI LATE 7 POOR 35 FAIR 13 GEN POOR 42 GEN GOOD
MAX LVORI EARLY 5 6 4 8
MAX LVORI LATE 6 4 6 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ509-220815-
MONONGALIA-
INCLUDING THE CITY OF MORGANTOWN
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 80 90 80
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 52 (0) 65 (+3) 51 69
RH % (24H TREND) 93 (-5) 74 (-7) 97 76
WIND 20FT/EARLY(MPH) E 5 E 6 G17 E 9 G23 SE 9 G22
WIND 20FT/LATE(MPH) LGT/VAR E 8 G17 SE 9 G22 SE 8 G18
PRECIP AMOUNT 0.00 0.15 0.37 0.30
PRECIP DURATION 1 5 11 11
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 560 550
MIXING HGT(FT-AGL/MSL) 1830 1820
TRANSPORT WND (MPH) SE 17 SE 17
VENT RATE (KT-FT) 27450 27300
CATEGORY DAY 3 3
INVERSION 8PM 57F/8AM 7PM 59F/10AM
DISPERSION 3 3
MAX ADI EARLY 8 POOR 36 FAIR 19 GEN POOR 23 FAIR
MAX ADI LATE 7 POOR 38 FAIR 15 GEN POOR 35 FAIR
MAX LVORI EARLY 4 5 4 6
MAX LVORI LATE 6 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ510-220815-
RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
INCLUDING THE CITY OF COOPERS ROCK
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 50 70 80 80
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 50 (-2) 63 (+4) 48 66
RH % (24H TREND) 96 (-4) 75 (-11) 97 76
WIND 20FT/EARLY(MPH) E 5 E 8 G19 E 12 G25 SE 12 G23
WIND 20FT/LATE(MPH) E 6 E 9 G19 SE 13 G25 SE 9 G20
PRECIP AMOUNT 0.01 0.11 0.32 0.25
PRECIP DURATION 1 5 10 11
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 460 450
MIXING HGT(FT-AGL/MSL) 1510 1470
TRANSPORT WND (MPH) SE 20 SE 17
VENT RATE (KT-FT) 25670 22050
CATEGORY DAY 3 2
INVERSION 8PM 55F/8AM NONE NONE
DISPERSION 3 2
MAX ADI EARLY 8 POOR 34 FAIR 19 GEN POOR 27 FAIR
MAX ADI LATE 12 POOR 38 FAIR 18 GEN POOR 31 FAIR
MAX LVORI EARLY 5 5 4 5
MAX LVORI LATE 6 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ511-220815-
PRESTON-
INCLUDING THE CITIES OF KINGWOOD AND BRUCETON MILLS
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 80 80
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 49 (-6) 63 (+3) 48 67
RH % (24H TREND) 98 (-2) 72 (-13) 99 73
WIND 20FT/EARLY(MPH) LGT/VAR E 8 G19 SE 10 G24 SE 11 G23
WIND 20FT/LATE(MPH) E 5 G17 E 9 G20 SE 10 G24 SE 9 G20
PRECIP AMOUNT 0.02 0.11 0.33 0.24
PRECIP DURATION 3 6 10 9
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 470 440
MIXING HGT(FT-AGL/MSL) 1540 1440
TRANSPORT WND (MPH) SE 22 SE 18
VENT RATE (KT-FT) 29260 23040
CATEGORY DAY 3 2
INVERSION 7PM 54F/8AM 7PM 55F/10AM
DISPERSION 3 2
MAX ADI EARLY 8 POOR 33 FAIR 19 GEN POOR 29 FAIR
MAX ADI LATE 11 POOR 39 FAIR 19 GEN POOR 31 FAIR
MAX LVORI EARLY 5 5 4 5
MAX LVORI LATE 6 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ512-220815-
EASTERN PRESTON-
INCLUDING THE CITIES OF TERRA ALTA, ROWLESBURG, AND HAZELTON
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 90 80
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 48 (-9) 61 (+2) 46 64
RH % (24H TREND) 99 (-1) 74 (-15) 99 74
WIND 20FT/EARLY(MPH) E 6 E 9 G22 E 13 G26 SE 12 G26
WIND 20FT/LATE(MPH) E 7 G18 E 10 G22 SE 13 G26 SE 10 G23
PRECIP AMOUNT 0.04 0.11 0.31 0.26
PRECIP DURATION 4 6 10 9
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 440 420
MIXING HGT(FT-AGL/MSL) 1450 1380
TRANSPORT WND (MPH) SE 23 SE 21
VENT RATE (KT-FT) 29000 24840
CATEGORY DAY 3 2
INVERSION 8PM 53F/8AM NONE NONE
DISPERSION 3 2
MAX ADI EARLY 12 POOR 29 FAIR 20 GEN POOR 30 FAIR
MAX ADI LATE 15 GEN POOR 38 FAIR 20 GEN POOR 33 FAIR
MAX LVORI EARLY 5 5 4 5
MAX LVORI LATE 5 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ513-220815-
WESTERN TUCKER-
INCLUDING THE CITIES OF PARSONS, HENDRICKS, AND SAINT GEORGE
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 90 80
CHANCE OF THUNDER (%) 0 0 20 20
TEMP (24H TREND) 50 (-10) 63 (+1) 49 68
RH % (24H TREND) 99 (0) 67 (-20) 98 68
WIND 20FT/EARLY(MPH) LGT/VAR SE 6 G17 SE 11 G23 SE 9 G22
WIND 20FT/LATE(MPH) LGT/VAR SE 8 G18 SE 10 G23 SE 8 G19
PRECIP AMOUNT 0.09 0.17 0.21 0.18
PRECIP DURATION 5 8 8 8
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 440 460
MIXING HGT(FT-AGL/MSL) 1450 1510
TRANSPORT WND (MPH) SE 20 SE 17
VENT RATE (KT-FT) 24650 22650
CATEGORY DAY 2 2
INVERSION 7PM 55F/9AM 6PM 56F/10AM
DISPERSION 2 2
MAX ADI EARLY 7 POOR 26 FAIR 16 GEN POOR 27 FAIR
MAX ADI LATE 8 POOR 34 FAIR 15 GEN POOR 32 FAIR
MAX LVORI EARLY 5 6 4 5
MAX LVORI LATE 7 4 5 4
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
WVZ514-220815-
EASTERN TUCKER-
INCLUDING THE CITIES OF DAVIS, THOMAS, AND CANAAN VALLEY
1250 PM EDT THU MAY 21 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLDY MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 90 90 90 90
CHANCE OF THUNDER (%) 0 0 0 20
TEMP (24H TREND) 45 (-12) 57 (-3) 43 62
RH % (24H TREND) 100 (+1) 80 (-11) 100 81
WIND 20FT/EARLY(MPH) E 5 SE 7 G19 SE 10 G25 SE 8 G23
WIND 20FT/LATE(MPH) SE 5 SE 8 G19 SE 9 G24 SE 8 G19
PRECIP AMOUNT 0.15 0.22 0.23 0.17
PRECIP DURATION 6 11 10 9
PRECIP BEGIN 6 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(M-AGL/MSL) 380 360
MIXING HGT(FT-AGL/MSL) 1240 1170
TRANSPORT WND (MPH) SE 20 SE 17
VENT RATE (KT-FT) 21080 17550
CATEGORY DAY 2 2
INVERSION 6PM 52F/12PM 6PM 52F/11AM
DISPERSION 2 2
MAX ADI EARLY 9 POOR 19 GEN POOR 16 GEN POOR 24 FAIR
MAX ADI LATE 11 POOR 29 FAIR 15 GEN POOR 25 FAIR
MAX LVORI EARLY 6 6 5 6
MAX LVORI LATE 7 5 6 5
REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS IN THE MID
50S. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
SOUTHWEST WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE
UPPER 50S. HIGHS IN THE LOWER 80S. NORTHEAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS AROUND 60.
HIGHS IN THE LOWER 80S. NORTH WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE
LOWER 80S. NORTHEAST WINDS AROUND 5 MPH.
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