779
FNUS74 KMOB 211005
FWSMOB
SPOT FORECAST FOR DESOTO BLOCK 8301 SOUTH...USFS
NATIONAL WEATHER SERVICE MOBILE AL
505 AM CDT THU MAY 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 CDT ON MAY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THERE IS A 60% CHANCE OF RAIN THE REST OF TODAY,
AND A 50% CHANCE OF RAIN TONIGHT, AND A 80% CHANCE OF RAIN
FRIDAY. FOR THE REST OF TODAY, THE MINIMUM RELATIVE HUMIDITY IS
NEAR 70%, 20 FT WIND GUSTS WILL BE UP TO NEAR 15 MPH, TRANSPORT
WINDS WILL BE MOSTLY SOUTHERLY TO SOUTH-SOUTHEASTERLY, AND
DISPERSION VALUES WILL BE FAIR. FOR FRIDAY, THE MINIMUM RELATIVE
HUMIDITY IS NEAR 70%, 20 FT WIND GUSTS WILL BE UP TO NEAR 20 MPH,
TRANSPORT WINDS WILL BE MOSTLY SOUTHERLY TO SOUTH-SOUTHWESTERLY,
AND DISPERSION VALUES WILL BE GENERALLY GOOD.
FOG POTENTIAL AND OTHER REMARKS...FOG IS NOT EXPECTED.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT). CHANCE OF SHOWERS
IN THE MORNING. CHANCE OF THUNDERSTORMS THROUGH
THE DAY. SHOWERS LIKELY IN THE AFTERNOON.
CHANCE OF PCPN......60 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........67 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 6 MPH IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS.
MIXING HEIGHT.......3300 FT AGL.
MIXING HEIGHT (M)...152-1006 METERS AGL.
TRANSPORT WINDS.....SOUTH 5 TO 13 MPH.
TRANSPORT WINDS M/S.SOUTH 2 TO 6 METERS/SECOND.
DISPERSION INDEX....10 INCREASING TO 36.
LVORI...............6.
STABILITY CLASS.....2.
TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........77 69 68 71 67 66
WEATHER COV.....CHANCE CHANCE CHANCE LIKELY LIKELY CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE
CHC OF PCPN (%).30 30 50 60 60 50
TEMP............71 74 80 82 82 83
RH..............97 97 79 72 72 70
20 FT WIND DIR..N SSE SSE SSE S S
20 FT WIND SPD..0 1 3 6 7 7
20 FT WIND GUST.5 6 9 14 15 15
MIX HGT (FT)....500 1800 2600 2800 3000 3300
MIX HGT (M).....150 550 790 850 910 1010
TRANSP WIND DIR.SSE S S S S S
TRANSP WIND SPD.5 6 9 10 12 12
TRANS WIND DIR..SSE S S S S S
TRANS SPD (M/S).2 3 4 4 5 5
DISPERSION IDX..5 14 29 34 37 38
LVORI...........9 5 3 3 3 3
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF
SHOWERS IN THE EVENING. CHANCE OF THUNDERSTORMS
THROUGH THE NIGHT. SHOWERS LIKELY OVERNIGHT.
CHANCE OF PCPN......60 PERCENT.
MIN TEMPERATURE.....AROUND 71.
MAX HUMIDITY........97 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE EVENING AND OVERNIGHT.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS AFTER 3 AM.
MIXING HEIGHT.......400 FT AGL.
MIXING HEIGHT (M)...122-1006 METERS AGL.
TRANSPORT WINDS.....SOUTH 8 TO 12 MPH.
TRANSPORT WINDS M/S.SOUTH 4 TO 5 METERS/SECOND.
DISPERSION INDEX....43 DECREASING TO 6.
LVORI...............5.
STABILITY CLASS.....4.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........68 75 72 83 60 72
WEATHER COV.....CHANCE S CHC S CHC S CHC CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........CHANCE S CHC S CHC S CHC S CHC CHANCE
CHC OF PCPN (%).50 20 20 20 40 50
TEMP............82 76 74 73 73 73
RH..............72 85 90 93 90 90
20 FT WIND DIR..S S SSE SSE SSE SSE
20 FT WIND SPD..7 3 3 3 3 3
20 FT WIND GUST.14 12 10 10 10 12
MIX HGT (FT)....3300 600 600 500 500 500
MIX HGT (M).....1010 180 180 150 150 150
TRANSP WIND DIR.S S S S S S
TRANSP WIND SPD.12 9 9 9 10 8
TRANS WIND DIR..S S S S S S
TRANS SPD (M/S).5 4 4 4 4 4
DISPERSION IDX..43 5 4 4 4 4
LVORI...........3 5 6 6 6 6
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF
THUNDERSTORMS IN THE MORNING. SHOWERS THROUGH
THE DAY. THUNDERSTORMS LIKELY IN THE AFTERNOON.
CHANCE OF PCPN......80 PERCENT.
MAX TEMPERATURE.....AROUND 84.
MIN HUMIDITY........72 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 8 MPH WITH
GUSTS TO AROUND 20 MPH EARLY IN THE MORNING.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS EARLY IN THE MORNING. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......3300 FT AGL.
MIXING HEIGHT (M)...152-1006 METERS AGL.
TRANSPORT WINDS.....SOUTH 8 TO 16 MPH.
TRANSPORT WINDS M/S.SOUTH 4 TO 7 METERS/SECOND.
DISPERSION INDEX....7 INCREASING TO 18 EARLY IN THE MORNING, THEN
INCREASING TO 31 LATE IN THE MORNING INCREASING
TO 42 EARLY IN THE AFTERNOON INCREASING TO 47
DECREASING TO 35 LATE IN THE AFTERNOON.
LVORI...............5.
STABILITY CLASS.....2.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........63 72 54 68 63 63
WEATHER COV.....CHANCE DEFNTE DEFNTE DEFNTE DEFNTE DEFNTE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........CHANCE S CHC CHANCE CHANCE LIKELY LIKELY
CHC OF PCPN (%).50 80 80 80 80 80
TEMP............72 72 76 80 81 83
RH..............93 97 90 82 77 72
20 FT WIND DIR..SSE S S S S S
20 FT WIND SPD..3 6 7 8 8 8
20 FT WIND GUST.12 14 16 18 20 18
MIX HGT (FT)....500 1000 1600 2100 2800 2800
MIX HGT (M).....150 300 490 640 850 850
TRANSP WIND DIR.S S S SSW S S
TRANSP WIND SPD.8 10 14 14 16 13
TRANS WIND DIR..S S S SSW S S
TRANS SPD (M/S).4 4 6 6 7 6
DISPERSION IDX..4 14 27 37 46 36
LVORI...........6 5 4 4 3 3
FORECASTER...25
REQUESTED BY...CLIFF WILLIS
TYPE OF REQUEST...PRESCRIBED
.TAG 2614081.1/MOB
.DELDT 05/21/26
.FORMATTERVERSION 2.0.0
.EMAIL CLIFTON.WILLIS@USDA.GOV
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