386
FNUS74 KMOB 121404
FWSMOB
SPOT FORECAST FOR DESOTO BB 8301...USFS
NATIONAL WEATHER SERVICE MOBILE AL
804 AM CST FRI DEC 12 2025
FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON DECEMBER 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...LOW DISPERSION INDEX AROUND 20 EXPECTED THIS AFTERNOON OVER THE
BURN AREA...
DISCUSSION
DRY FORECAST TODAY WITH ISOLATED RAIN SHOWERS POSSIBLE
BY LATE SATURDAY AFTERNOON. MINIMUM RELATIVE HUMIDITY REMAINS ABOVE
CRITICAL THRESHOLDS BOTH DAYS AT THE BURN SITE. TRANSPORT WINDS WILL
GENERALLY REMAIN SOUTHWESTERLY TO WESTERLY TODAY AND SOUTHWESTERLY
ON SATURDAY. AFTERNOON DISPERSION WILL BE GENERALLY POOR TODAY AND
FAIR ON SATURDAY.
FOG POTENTIAL AND OTHER REMARKS...LIGHT FOG IS POSSIBLE EARLY THIS
MORNING AT THE BURN SITE. HIGH LIKELIHOOD OF FOG AFTER MIDNIGHT
TONIGHT THROUGH SATURDAY MORNING.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........68 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST AROUND 5 MPH
EARLY IN THE AFTERNOON, THEN BECOMING LIGHT
LATE IN THE AFTERNOON.
MIXING HEIGHT.......2500 FT AGL.
MIXING HEIGHT (M)...274-762 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 6 TO 9 MPH.
TRANSPORT WINDS M/S.SOUTHWEST 3 TO 4 METERS/SECOND.
DISPERSION INDEX....11 INCREASING TO 19 IN THE AFTERNOON.
LVORI...............4.
STABILITY CLASS.....2.
TIME (CST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........46 45 57 50 44 46 39 51
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 10 10 10 10 10 10
TEMP............57 61 67 69 69 70 68 66
RH..............83 84 73 68 70 68 73 78
20 FT WIND DIR..SSW SSW SW SW SW SW SSW SSW
20 FT WIND SPD..3 5 5 6 5 5 3 2
20 FT WIND GUST.8 9 10 10 10 10 9 8
MIX HGT (KFT)...0.9 1.3 1.8 1.9 2.2 2.5 2.5 2.5
MIX HGT (KM)....0.3 0.4 0.5 0.6 0.7 0.8 0.8 0.8
TRANSP WIND DIR.SW WSW WSW WSW WSW W SW SSW
TRANSP WIND SPD.7 8 9 7 7 7 6 7
TRANS SPD (M/S).3 4 4 3 3 3 3 3
DISPERSION IDX..7 14 17 18 19 17 18 20
LVORI...........4 4 3 3 3 3 3 3
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT). PATCHY FOG
OVERNIGHT.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......400 FT AGL.
MIXING HEIGHT (M)...122 METERS AGL.
TRANSPORT WINDS.....SOUTH 5 TO 6 MPH SHIFTING TO THE NORTH
OVERNIGHT.
TRANSPORT WINDS M/S.SOUTH AROUND 3 METERS/SECOND BECOMING 2 TO 3
METERS/SECOND IN THE EVENING, THEN SHIFTING TO
THE NORTH OVERNIGHT.
DISPERSION INDEX....3.
LVORI...............8.
STABILITY CLASS.....4.
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........46 47 63 63 77 69 62 74 68 60 55 41
WEATHER COV..... PTY PTY PTY PTY PTY PTY
WEATHER TYPE.... FOG FOG FOG FOG FOG FOG
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 0 0 0
TEMP............63 59 58 57 57 56 56 56 55 55 54 53
RH..............87 100 100 100 100 100 100 100 100 96 100 100
20 FT WIND DIR..S S S S S SSW W N N NNE NNE NNE
20 FT WIND SPD..2 2 1 1 1 1 1 1 1 1 1 1
20 FT WIND GUST.7 6 5 5 5 3 5 3 3 5 5 5
MIX HGT (KFT)...0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
MIX HGT (KM)....0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
TRANSP WIND DIR.SSW S SSW S S S WSW NNW N NNW N N
TRANSP WIND SPD.6 6 5 5 5 6 6 6 5 5 5 5
TRANS SPD (M/S).3 3 2 2 2 3 3 3 2 2 2 2
DISPERSION IDX..3 2 2 2 2 2 3 3 2 2 2 2
LVORI...........6 9 10 9 9 9 9 9 9 8 9 10
SATURDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). PATCHY FOG EARLY
IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........68 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......2800 FT AGL.
MIXING HEIGHT (M)...122-853 METERS AGL.
TRANSPORT WINDS.....SOUTH AROUND 3 MPH INCREASING TO 7 TO 8 MPH.
TRANSPORT WINDS M/S.SOUTH AROUND 1 METERS/SECOND INCREASING TO 3 TO
4 METERS/SECOND.
DISPERSION INDEX....6 INCREASING TO 27.
LVORI...............6.
STABILITY CLASS.....2.
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........67 60 62 63 57 52 46 42 39 35 35 34
WEATHER COV.....PTY PTY PTY SCH SCH SCH SCH SCH SCH
WEATHER TYPE....FOG FOG FOG RW RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 20 20 20 20 20 20
TEMP............53 54 55 58 61 65 68 70 72 72 70 68
RH..............100 100 100 100 97 87 78 73 68 68 73 78
20 FT WIND DIR..NNE ENE E ESE SE SSE S S SSW SSW SSW S
20 FT WIND SPD..2 2 2 2 3 3 3 3 3 3 3 3
20 FT WIND GUST.5 6 6 7 7 8 8 9 9 9 8 8
MIX HGT (KFT)...0.4 0.4 0.5 0.6 1.2 1.7 2.3 2.5 2.6 2.8 2.8 2.8
MIX HGT (KM)....0.1 0.1 0.2 0.2 0.4 0.5 0.7 0.8 0.8 0.9 0.9 0.9
TRANSP WIND DIR.S ESE ESE ESE SE S SSW SSW SSW SSW SSW S
TRANSP WIND SPD.3 5 5 3 5 7 8 8 8 8 8 7
TRANS SPD (M/S).1 2 2 1 2 3 4 4 4 4 4 3
DISPERSION IDX..3 3 3 3 8 15 23 25 27 29 28 25
LVORI...........9 9 9 9 6 4 3 3 3 3 3 3
FORECASTER...7
REQUESTED BY...JODY ROGERS
TYPE OF REQUEST...PRESCRIBED
.TAG 2527557.0/MOB
.DELDT 12/12/25
.FORMATTERVERSION 2.0.0
.EMAIL JOSEPH.ROGERS@USDA.GOV
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