682
FNUS74 KMOB 181206
FWSMOB
SPOT FORECAST FOR DESOTO BLOCK 8301 C-214 EAST...USFS
NATIONAL WEATHER SERVICE MOBILE AL
606 AM CST THU DEC 18 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 CST ON DECEMBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...LOW DISPERSION INDEX AROUND 25 EXPECTED THIS AFTERNOON OVER
THE BURN AREA...
DISCUSSION
A COLD FRONT WILL BRING SCATTERED TO NUMEROUS
SHOWERS AND STORMS TO THE AREA TODAY WITH DRY CONDITIONS
FOLLOWING FOR FRIDAY. AFTERNOON RELATIVE HUMIDITY VALUES REMAIN
ABOVE CRITICAL LEVELS AROUND 85 PERCENT. TRANSPORT WINDS WILL BE
MOSTLY SOUTHERLY TO SOUTHEASTERLY AROUND 10 TO 15 MPH BECOMING
NORTHERLY ON FRIDAY. DISPERSION INDEX VALUES WILL BE GENERALLY
POOR TO FAIR THURSDAY AND FAIR ON FRIDAY.
FOG POTENTIAL AND OTHER REMARKS...FOG IS NOT EXPECTED OVER THE
BURN SITE THROUGH FRIDAY MORNING.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). RAIN SHOWERS IN
THE MORNING. CHANCE OF THUNDERSTORMS THROUGH
THE DAY. RAIN SHOWERS LIKELY IN THE AFTERNOON.
CHANCE OF PCPN......90 PERCENT.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........84 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE MORNING AND
EARLY AFTERNOON. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
MIXING HEIGHT.......2200 FT AGL.
MIXING HEIGHT (M)...183-671 METERS AGL.
TRANSPORT WINDS.....SOUTH 9 TO 16 MPH.
TRANSPORT WINDS M/S.SOUTH 4 TO 7 METERS/SECOND.
DISPERSION INDEX....15 INCREASING TO 22 LATE IN THE MORNING.
LVORI...............6.
STABILITY CLASS.....3.
TIME (CST) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........89 90 80 78 72 56
WEATHER COV.....DEFNTE DEFNTE DEFNTE LIKELY S CHC S CHC
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........CHANCE CHANCE CHANCE CHANCE S CHC S CHC
CHC OF PCPN (%).90 80 80 60 20 20
TEMP............59 64 68 71 72 69
RH..............100 97 93 84 84 90
20 FT WIND DIR..SE SSE S S SSW SSW
20 FT WIND SPD..6 6 7 8 8 7
20 FT WIND GUST.14 14 16 16 16 15
MIX HGT (FT)....600 900 1600 1900 2000 2000
MIX HGT (M).....180 270 490 580 610 610
TRANSP WIND DIR.SSE SSE S S SSW SSW
TRANSP WIND SPD.12 14 16 14 10 9
TRANS WIND DIR..SSE SSE S S SSW SSW
TRANS SPD (M/S).5 6 7 6 4 4
DISPERSION IDX..12 15 24 25 20 17
LVORI...........7 5 5 4 4 4
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
MOSTLY CLEAR (15-25 PERCENT). CHANCE OF RAIN
SHOWERS EARLY IN THE EVENING, THEN SLIGHT
CHANCE OF RAIN SHOWERS LATE IN THE EVENING.
CHANCE OF PCPN......30 PERCENT.
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........97 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO THE
NORTHWEST 6 TO 8 MPH OVERNIGHT.
MIXING HEIGHT.......500 FT AGL.
MIXING HEIGHT (M)...152-244 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 9 MPH SHIFTING TO THE NORTHWEST
9 TO 16 MPH EARLY IN THE EVENING, THEN SHIFTING
TO THE NORTH AROUND 13 MPH EARLY IN THE
MORNING.
TRANSPORT WINDS M/S.SOUTHWEST AROUND 4 METERS/SECOND SHIFTING TO
THE NORTHWEST 4 TO 7 METERS/SECOND EARLY IN THE
EVENING, THEN SHIFTING TO THE NORTH AROUND 6
METERS/SECOND EARLY IN THE MORNING.
DISPERSION INDEX....11.
LVORI...............6.
STABILITY CLASS.....4.
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........62 72 55 53 24 6
WEATHER COV.....CHANCE CHANCE S CHC
WEATHER TYPE....RNSHWR RNSHWR RNSHWR NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).30 30 20 0 0 0
TEMP............67 66 63 60 55 49
RH..............93 93 97 93 83 80
20 FT WIND DIR..SSW WSW WNW NW NNW NNW
20 FT WIND SPD..6 6 7 8 9 8
20 FT WIND GUST.14 15 17 17 18 17
MIX HGT (FT)....500 600 600 800 800 600
MIX HGT (M).....150 180 180 240 240 180
TRANSP WIND DIR.SSW WNW WNW NW NNW NNW
TRANSP WIND SPD.8 9 13 16 16 13
TRANS WIND DIR..SSW WNW WNW NW NNW NNW
TRANS SPD (M/S).4 4 6 7 7 6
DISPERSION IDX..6 7 10 15 11 9
LVORI...........6 6 7 5 4 4
FRIDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 6 MPH IN THE MORNING AND EARLY
AFTERNOON BECOMING LIGHT.
MIXING HEIGHT.......2900 FT AGL.
MIXING HEIGHT (M)...213-884 METERS AGL.
TRANSPORT WINDS.....NORTH 9 TO 15 MPH.
TRANSPORT WINDS M/S.NORTH 4 TO 7 METERS/SECOND.
DISPERSION INDEX....16 INCREASING TO 37 LATE IN THE MORNING, THEN
INCREASING TO 40 LATE IN THE MORNING DECREASING
TO 30 LATE IN THE AFTERNOON.
LVORI...............3.
STABILITY CLASS.....2.
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........7 4 3 3 3 3
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............45 46 52 57 60 57
RH..............79 68 56 43 39 47
20 FT WIND DIR..NNW N N N N N
20 FT WIND SPD..6 6 6 7 7 5
20 FT WIND GUST.15 14 14 14 13 9
MIX HGT (FT)....700 1200 2200 2700 2900 2700
MIX HGT (M).....210 370 670 820 880 820
TRANSP WIND DIR.N N N N N N
TRANSP WIND SPD.13 13 15 13 12 10
TRANS WIND DIR..N N N N N N
TRANS SPD (M/S).6 6 7 6 5 4
DISPERSION IDX..13 20 41 42 42 32
LVORI...........4 3 1 1 1 1
FORECASTER...8
REQUESTED BY...CLIFF WILLIS
TYPE OF REQUEST...PRESCRIBED
.TAG 2527841.1/MOB
.DELDT 12/18/25
.FORMATTERVERSION 2.0.0
.EMAIL CLIFTON.WILLIS@USDA.GOV
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