586
FNUS54 KMEG 182030
FWFMEG
FIRE WEATHER PLANNING FORECAST FOR THE MIDSOUTH
NATIONAL WEATHER SERVICE MEMPHIS TN
330 PM CDT TUE AUG 18 2026
DISCUSSION
FIRE DANGER POTENTIAL REMAINS LOW AS 20 FT WINDS REMAIN LIGHT,
BUT MINIMUM RELATIVE HUMIDITY VALUES COULD LOCALLY DROP BELOW 40%
EACH AFTERNOON THROUGH THE PERIOD. FOG POTENTIAL REMAINS LOW
(<10%) DUE TO DRY SOILS. WETTING RAIN CHANCES INCREASE WEDNESDAY
EVENING AND INTO THURSDAY MORNING AS A FRONT MOVES SOUTH INTO THE
REGION ACROSS PORTIONS OF NORTHEASTERN ARKANSAS, THE MISSOURI
BOOTHEEL, AND WEST TENNESSEE. SOME THUNDERSTORMS ARE POSSIBLE
DURING THIS TIME, WHICH WILL BE ACCOMPANIED BY A CHANCE FOR
DAMAGING WINDS AND HEAVY RAINFALL.
ARZ009-018-026>028-MOZ113-115-190900-
CLAY-CRAIGHEAD-DUNKLIN-GREENE-MISSISSIPPI-PEMISCOT-POINSETT-
330 PM CDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR PCLDY PCLDY
CHANCE OF THUNDER (%) 0 0 50 50
PRECIP CHANCE (%) 10 50 50
PRECIP TYPE NONE SHOWERS TSTMS TSTMS
PRECIP AMOUNT 0.00 0.02 0.14 0.17
PRECIP DURATION (HRS) 0 2 2
PRECIP BEGIN 7 AM 6 PM CONTINUING
PRECIP END 11 AM CONTINUING CONTINUING
TEMP (24H TREND) 71 (0) 100 (+7) 71 91
RH % (24H TREND) 93 (+1) 39 (-11) 100 59
AM WIND 20FT (MPH) LGT/VAR NE 4
PM WIND 20FT (MPH) LGT/VAR S 5 SE 4 N 4
MIXING HGT(M-AGL) 1200 1000
MIXING HGT(FT-AGL) 4000 3400
MIXING HGT(M-MSL) 1300 1100
MIXING HGT(FT-MSL) 4300 3700
TRANSPORT WND (M/S) S 6 N 4
TRANSPORT WND (MPH) S 13 N 8
VENT INDEX (M2/S) 7800 4400
CATEGORY DAY 3 3
500M MIX HGT TEMP (F) 94 80
500M TSPT WIND (M/S) SW 6 N 6
500M TSPT WIND (MPH) SW 13 N 14
DISPERSION INDEX 9 24 10 16
STABILITY CLASS F B F B
STAGNATION INDEX 3 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 56 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
FRIDAY NIGHT
CLEAR. LOWS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 49 PERCENT.
NORTHWEST WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 49 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. EAST WINDS AROUND
5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH
48 PERCENT. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 45 PERCENT.
SOUTHWEST WINDS AROUND 5 MPH.
ARZ035-036-048-049-058-190900-
CRITTENDEN-CROSS-LEE AR-PHILLIPS-ST. FRANCIS-
330 PM CDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR MCLEAR PCLDY
CHANCE OF THUNDER (%) 0 0 0 30
PRECIP CHANCE (%) 20 30
PRECIP TYPE NONE NONE SHOWERS TSTMS
PRECIP AMOUNT 0.00 0.00 0.00 0.01
PRECIP DURATION (HRS) 1 2
PRECIP BEGIN 9 PM CONTINUING
PRECIP END CONTINUING CONTINUING
TEMP (24H TREND) 73 (-2) 103 (+7) 75 97
RH % (24H TREND) 95 (-2) 32 (-17) 89 46
AM WIND 20FT (MPH) LGT/VAR LGT/VAR
PM WIND 20FT (MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
MIXING HGT(M-AGL) 2100 1000
MIXING HGT(FT-AGL) 7000 3200
MIXING HGT(M-MSL) 2200 1000
MIXING HGT(FT-MSL) 7200 3400
TRANSPORT WND (M/S) SW 5 NW 4
TRANSPORT WND (MPH) SW 10 NW 8
VENT INDEX (M2/S) 11000 4000
CATEGORY DAY 4 3
500M MIX HGT TEMP (F) 96 87
500M TSPT WIND (M/S) SW 5 N 6
500M TSPT WIND (MPH) SW 12 N 13
DISPERSION INDEX 9 27 11 22
STABILITY CLASS F A F A
STAGNATION INDEX 3 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS IN THE
LOWER 70S. NORTHEAST WINDS AROUND 5 MPH.
FRIDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 50 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
FRIDAY NIGHT
CLEAR. LOWS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 43 PERCENT.
NORTH WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 43 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. EAST WINDS
AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 90S. MINIMUM RH
42 PERCENT. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
SUNNY. HIGHS IN THE UPPER 90S. MINIMUM RH 39 PERCENT.
SOUTHWEST WINDS AROUND 5 MPH.
TNZ001>004-019>022-190900-
BENTON TN-CARROLL-DYER-GIBSON-HENRY-LAKE-OBION-WEAKLEY-
330 PM CDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
CHANCE OF THUNDER (%) 0 0 50 50
PRECIP CHANCE (%) 10 70 60
PRECIP TYPE NONE NONE TSTMS TSTMS
PRECIP AMOUNT 0.00 0.00 0.33 0.19
PRECIP DURATION (HRS) 3 2
PRECIP BEGIN 9 PM CONTINUING
PRECIP END CONTINUING 1 PM
TEMP (24H TREND) 66 (-1) 96 (+6) 71 90
RH % (24H TREND) 95 (-2) 44 (-4) 100 63
AM WIND 20FT (MPH) LGT/VAR LGT/VAR
PM WIND 20FT (MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
MIXING HGT(M-AGL) 900 1100
MIXING HGT(FT-AGL) 2800 3500
MIXING HGT(M-MSL) 1000 1200
MIXING HGT(FT-MSL) 3200 3800
TRANSPORT WND (M/S) S 5 NW 3
TRANSPORT WND (MPH) S 12 NW 7
VENT INDEX (M2/S) 5000 3600
CATEGORY DAY 3 2
500M MIX HGT TEMP (F) 88 79
500M TSPT WIND (M/S) SE 5 N 6
500M TSPT WIND (MPH) SE 12 N 14
DISPERSION INDEX 7 22 12 17
STABILITY CLASS F B F B
STAGNATION INDEX 3 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS IN THE
UPPER 60S. NORTHEAST WINDS AROUND 5 MPH.
FRIDAY
SUNNY. HIGHS IN THE UPPER 80S. MINIMUM RH 59 PERCENT.
NORTH WINDS AROUND 5 MPH.
FRIDAY NIGHT
CLEAR. LOWS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS AROUND 90. MINIMUM RH 52 PERCENT.
NORTHWEST WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. NORTH
WINDS AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE UPPER 80S. MINIMUM RH 50 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. NORTHEAST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 90. MINIMUM RH 50 PERCENT.
SOUTHEAST WINDS AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 49 PERCENT.
SOUTH WINDS AROUND 5 MPH.
TNZ048>055-088>091-190900-
CHESTER-CROCKETT-DECATUR-FAYETTE-HARDEMAN-HAYWOOD-HENDERSON-
LAUDERDALE-MADISON-MCNAIRY-SHELBY-TIPTON-
330 PM CDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
CHANCE OF THUNDER (%) 0 0 20 40
PRECIP CHANCE (%) 40 40
PRECIP TYPE NONE NONE TSTMS TSTMS
PRECIP AMOUNT 0.00 0.00 0.09 0.13
PRECIP DURATION (HRS) 2 2
PRECIP BEGIN 9 PM CONTINUING
PRECIP END CONTINUING CONTINUING
TEMP (24H TREND) 67 (-4) 99 (+6) 72 93
RH % (24H TREND) 96 (+1) 39 (-10) 97 56
AM WIND 20FT (MPH) LGT/VAR LGT/VAR
PM WIND 20FT (MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
MIXING HGT(M-AGL) 1400 900
MIXING HGT(FT-AGL) 4500 2900
MIXING HGT(M-MSL) 1500 1000
MIXING HGT(FT-MSL) 4900 3300
TRANSPORT WND (M/S) SW 4 W 3
TRANSPORT WND (MPH) SW 9 W 7
VENT INDEX (M2/S) 6000 3000
CATEGORY DAY 3 2
500M MIX HGT TEMP (F) 93 84
500M TSPT WIND (M/S) S 4 N 6
500M TSPT WIND (MPH) S 9 N 13
DISPERSION INDEX 7 20 10 15
STABILITY CLASS F A F B
STAGNATION INDEX 3 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS IN THE
LOWER 70S. NORTHEAST WINDS AROUND 5 MPH.
FRIDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 58 PERCENT.
NORTH WINDS AROUND 5 MPH.
FRIDAY NIGHT
CLEAR. LOWS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 49 PERCENT.
NORTH WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH 48 PERCENT.
NORTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH
48 PERCENT. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 46 PERCENT.
SOUTHWEST WINDS AROUND 5 MPH.
MSZ001-007-008-010>012-020-021-190900-
COAHOMA-DESOTO-PANOLA-QUITMAN-TALLAHATCHIE-TATE-TUNICA-YALOBUSHA-
330 PM CDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
CHANCE OF THUNDER (%) 0 0 0 10
PRECIP CHANCE (%) 20 10 10
PRECIP TYPE NONE NONE NONE TSTMS
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION (HRS) 1
PRECIP BEGIN 7 AM
PRECIP END CONTINUING
TEMP (24H TREND) 73 (-1) 102 (+5) 76 98
RH % (24H TREND) 96 (0) 35 (-14) 86 46
AM WIND 20FT (MPH) LGT/VAR LGT/VAR
PM WIND 20FT (MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
MIXING HGT(M-AGL) 2200 1300
MIXING HGT(FT-AGL) 7200 4100
MIXING HGT(M-MSL) 2300 1300
MIXING HGT(FT-MSL) 7400 4400
TRANSPORT WND (M/S) W 4 W 4
TRANSPORT WND (MPH) W 8 W 8
VENT INDEX (M2/S) 9200 5200
CATEGORY DAY 4 3
500M MIX HGT TEMP (F) 96 91
500M TSPT WIND (M/S) W 5 W 6
500M TSPT WIND (MPH) W 11 W 13
DISPERSION INDEX 8 28 11 27
STABILITY CLASS F A F A
STAGNATION INDEX 3 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS IN THE
LOWER 70S. EAST WINDS AROUND 5 MPH.
FRIDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 51 PERCENT.
NORTH WINDS AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 43 PERCENT.
NORTH WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 43 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. EAST WINDS
AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 90S. MINIMUM RH
43 PERCENT. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
SUNNY. HIGHS IN THE UPPER 90S. MINIMUM RH 41 PERCENT.
SOUTHWEST WINDS AROUND 5 MPH.
MSZ002>006-009-013>017-022>024-190900-
ALCORN-BENTON MS-CALHOUN-CHICKASAW-ITAWAMBA-LAFAYETTE-LEE MS-
MARSHALL-MONROE-PONTOTOC-PRENTISS-TIPPAH-TISHOMINGO-UNION-
330 PM CDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
CHANCE OF THUNDER (%) 0 0 0 20
PRECIP CHANCE (%) 20 10 20
PRECIP TYPE NONE NONE NONE TSTMS
PRECIP AMOUNT 0.00 0.00 0.00 0.01
PRECIP DURATION (HRS) 2
PRECIP BEGIN 6 AM
PRECIP END CONTINUING
TEMP (24H TREND) 70 (-3) 100 (+5) 75 96
RH % (24H TREND) 100 (+1) 37 (-15) 89 46
AM WIND 20FT (MPH) LGT/VAR LGT/VAR
PM WIND 20FT (MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
MIXING HGT(M-AGL) 1800 1100
MIXING HGT(FT-AGL) 5800 3700
MIXING HGT(M-MSL) 1900 1300
MIXING HGT(FT-MSL) 6300 4100
TRANSPORT WND (M/S) W 3 W 4
TRANSPORT WND (MPH) W 7 W 8
VENT INDEX (M2/S) 5700 5200
CATEGORY DAY 3 3
500M MIX HGT TEMP (F) 92 91
500M TSPT WIND (M/S) W 3 W 6
500M TSPT WIND (MPH) W 7 W 14
DISPERSION INDEX 5 18 9 25
STABILITY CLASS F A F A
STAGNATION INDEX 3 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
A CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS IN THE LOWER 70S. SOUTHWEST WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH
54 PERCENT. NORTHWEST WINDS AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. NORTH WINDS AROUND
5 MPH.
SATURDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 45 PERCENT.
NORTH WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. NORTH WINDS
AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 44 PERCENT.
NORTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 70. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH
44 PERCENT. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
SUNNY. HIGHS IN THE MID 90S. MINIMUM RH 42 PERCENT.
SOUTHWEST WINDS AROUND 5 MPH.
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