553
FNUS74 KMOB 201156
FWSMOB
SPOT FORECAST FOR DESOTO BLOCK 8359...USFS
NATIONAL WEATHER SERVICE MOBILE AL
556 AM CST FRI FEB 20 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 CST ON FEBRUARY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SCATTERED SHOWERS ARE POSSIBLE AT THE BURN SITE TODAY WITH
NUMEROUS SHOWERS AND STORMS EXPECTED SATURDAY AFTERNOON. A FEW STRONG
STORMS WITH ERRATIC, GUSTY WINDS ARE POSSIBLE ON SATURDAY. MINIMUM RELATIVE
HUMIDITY REMAINS WELL ABOVE CRITICAL THRESHOLDS. TRANSPORT WINDS WILL BE
SOUTHWESTERLY TODAY WHILE GRADUALLY TURNING MORE WESTERLY BY SATURDAY
AFTERNOON. GUSTS UP TO 15 KNOTS POSSIBLE AT THE BURN SITE. AFTERNOON
DISPERSION WILL BE GENERALLY GOOD TODAY AND FAIR SATURDAY.
FOG POTENTIAL AND OTHER REMARKS...FOG IS NOT EXPECTED AT THE BURN SITE.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF SHOWERS
THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS
LATE IN THE AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........58 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 6 TO 10 MPH EARLY IN
THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......3500 FT AGL.
MIXING HEIGHT (M)...183-1067 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 17 MPH.
TRANSPORT WINDS M/S.SOUTHWEST 4 TO 8 METERS/SECOND.
DISPERSION INDEX....14 INCREASING TO 20 LATE IN THE MORNING, THEN
INCREASING TO 39 LATE IN THE MORNING INCREASING
TO 56 EARLY IN THE AFTERNOON DECREASING TO 44.
LVORI...............5.
STABILITY CLASS.....3.
TIME (CST) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........85 74 51 40 50 52
WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........ S CHC S CHC
CHC OF PCPN (%).40 30 30 40 30 30
TEMP............69 73 77 81 82 78
RH..............97 87 71 63 58 69
20 FT WIND DIR..SSW SSW SSW SSW S SSE
20 FT WIND SPD..5 7 8 10 12 10
20 FT WIND GUST.12 14 14 16 17 17
MIX HGT (FT)....600 1400 2700 3500 2800 2800
MIX HGT (M).....180 430 820 1070 850 850
TRANSP WIND DIR.S SW SSW SSW SSW S
TRANSP WIND SPD.8 13 14 17 16 14
TRANS WIND DIR..S SW SSW SSW SSW S
TRANS SPD (M/S).4 6 6 8 7 6
DISPERSION IDX..10 20 43 59 45 42
LVORI...........8 4 3 1 1 1
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
SHOWERS IN THE EVENING. SLIGHT CHANCE OF
SHOWERS AFTER 3 AM.
CHANCE OF PCPN......20 PERCENT.
MIN TEMPERATURE.....AROUND 67.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTH WINDS 6 TO 8 MPH. GUSTS UP TO 20 MPH
EARLY IN THE EVENING.
MIXING HEIGHT.......700 FT AGL.
MIXING HEIGHT (M)...213-274 METERS AGL.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
TRANSPORT WINDS M/S.SOUTH 4 TO 7 METERS/SECOND.
DISPERSION INDEX....10.
LVORI...............6.
STABILITY CLASS.....4.
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........52 68 81 89 92 93
WEATHER COV.....S CHC S CHC S CHC S CHC
WEATHER TYPE....RNSHWR RNSHWR RNSHWR NONE NONE RNSHWR
TSTM COV........
CHC OF PCPN (%).20 20 20 10 10 20
TEMP............76 71 70 70 69 69
RH..............74 87 90 93 97 97
20 FT WIND DIR..SSE S S S SSW SSW
20 FT WIND SPD..9 9 9 8 8 7
20 FT WIND GUST.17 20 18 18 17 17
MIX HGT (FT)....700 800 900 900 800 800
MIX HGT (M).....210 240 270 270 240 240
TRANSP WIND DIR.S S SSW SSW SSW SSW
TRANSP WIND SPD.13 13 15 13 12 12
TRANS WIND DIR..S S SSW SSW SSW SSW
TRANS SPD (M/S).6 6 7 6 5 5
DISPERSION IDX..12 12 12 11 10 7
LVORI...........3 5 5 5 7 8
SATURDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF
SHOWERS IN THE MORNING. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE MORNING, THEN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
CHANCE OF PCPN......70 PERCENT.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........63 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 9 MPH SHIFTING TO THE WEST
AROUND 7 MPH LATE IN THE AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......3800 FT AGL.
MIXING HEIGHT (M)...183-1158 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 9 TO 16 MPH SHIFTING TO THE WEST 12
TO 14 MPH LATE IN THE AFTERNOON.
TRANSPORT WINDS M/S.SOUTHWEST AROUND 4 METERS/SECOND SHIFTING TO
THE WEST 5 TO 6 METERS/SECOND LATE IN THE
AFTERNOON.
DISPERSION INDEX....13 INCREASING TO 37.
LVORI...............4.
STABILITY CLASS.....3.
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........89 87 79 72 67 63
WEATHER COV.....CHANCE CHANCE CHANCE LIKELY LIKELY LIKELY
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........ S CHC CHANCE CHANCE CHANCE
CHC OF PCPN (%).30 30 30 70 70 70
TEMP............69 71 75 80 82 80
RH..............97 97 84 69 63 67
20 FT WIND DIR..SSW SSW SW SW WSW W
20 FT WIND SPD..6 7 9 10 10 9
20 FT WIND GUST.15 15 15 15 16 16
MIX HGT (FT)....600 1200 2200 3300 3600 3800
MIX HGT (M).....180 370 670 1010 1100 1160
TRANSP WIND DIR.SSW SW SW SW WSW W
TRANSP WIND SPD.10 10 14 14 16 14
TRANS WIND DIR..SSW SW SW SW WSW W
TRANS SPD (M/S).4 4 6 6 7 6
DISPERSION IDX..11 15 26 34 39 36
LVORI...........7 5 4 3 1 3
FORECASTER...7
REQUESTED BY...CLIFF WILLIS
TYPE OF REQUEST...PRESCRIBED
.TAG 2602852.3/MOB
.DELDT 02/20/26
.FORMATTERVERSION 2.0.0
.EMAIL CLIFTON.WILLIS@USDA.GOV
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