564
FNUS74 KMOB 121217
FWSMOB
SPOT FORECAST FOR BRB09...U.S. FOREST SERVICE
NATIONAL WEATHER SERVICE MOBILE AL
617 AM CST FRI DEC 12 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 CST ON DECEMBER 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...LOW DISPERSION INDEX AROUND 18 EXPECTED SATURDAY 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 WESTERLY TODAY AND SOUTHWESTERLY ON SATURDAY.
AFTERNOON DISPERSION WILL BE GENERALLY GOOD TODAY AND GENERALLY POOR
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.........SUNNY (5-15 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........53 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST AROUND 5 MPH
EARLY IN THE AFTERNOON, THEN BECOMING LIGHT
LATE IN THE AFTERNOON.
MIXING HEIGHT.......3600 FT AGL.
MIXING HEIGHT (M)...91-1097 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 2 TO 7 MPH SHIFTING TO THE WEST 7 TO
14 MPH LATE IN THE MORNING.
TRANSPORT WINDS M/S.WEST 1 TO 6 METERS/SECOND SHIFTING TO THE
SOUTHWEST 1 TO 5 METERS/SECOND LATE IN THE
MORNING, THEN SHIFTING TO THE WEST 3 TO 6
METERS/SECOND IN THE AFTERNOON.
DISPERSION INDEX....7 INCREASING TO 33 LATE IN THE MORNING, THEN
INCREASING TO 52 EARLY IN THE AFTERNOON
DECREASING TO 32 LATE IN THE AFTERNOON.
LVORI...............4.
STABILITY CLASS.....2.
TIME (CST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........8 2 1 1 8 10 17 14 16 14 15
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0
TEMP............37 43 52 59 64 68 69 69 70 68 64
RH..............96 86 71 60 56 53 53 55 55 57 67
20 FT WIND DIR..ESE SE S SSW SW WSW WSW WSW WSW WSW WSW
20 FT WIND SPD..1 1 2 3 5 6 6 6 5 3 2
20 FT WIND GUST.3 5 6 8 10 13 13 12 12 10 9
MIX HGT (KFT)...0.3 0.3 0.6 1.3 2.4 3.4 3.6 3.6 3.2 3.2 3.2
MIX HGT (KM)....0.1 0.1 0.2 0.4 0.7 1.0 1.1 1.1 1.0 1.0 1.0
TRANSP WIND DIR.S SSW SSW WSW WSW W W W W WSW WSW
TRANSP WIND SPD.3 2 3 7 12 14 13 12 12 9 7
TRANS SPD (M/S).1 1 1 3 5 6 6 5 5 4 3
DISPERSION IDX..3 3 4 11 33 56 56 52 47 36 28
LVORI...........6 5 3 2 1 1 1 1 1 1 3
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT). PATCHY FOG
OVERNIGHT. AREAS OF FOG AFTER 3 AM.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......300 FT AGL.
MIXING HEIGHT (M)...91-122 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 2 TO 6 MPH SHIFTING TO THE NORTHWEST
2 TO 3 MPH AFTER 3 AM.
TRANSPORT WINDS M/S.SOUTHWEST AROUND 3 METERS/SECOND SHIFTING TO
THE NORTHWEST AROUND 1 METERS/SECOND AFTER 3
AM.
DISPERSION INDEX....2.
LVORI...............7.
STABILITY CLASS.....4.
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........10 11 18 21 18 27 34 53 59 62 66 65
WEATHER COV..... PTY PTY PTY ARS ARS ARS
WEATHER TYPE.... FOG FOG FOG FOG FOG FOG
TSTM COV........
CHC OF PCPN (%).0 0 0 10 10 10 10 10 10 10 10 10
TEMP............61 57 56 55 54 54 53 53 52 52 51 50
RH..............78 93 93 96 100 100 100 100 100 100 100 100
20 FT WIND DIR..SW SW SW SW WSW WSW W W W NNW N N
20 FT WIND SPD..2 2 1 1 1 1 1 1 1 1 1 1
20 FT WIND GUST.8 7 6 6 5 5 5 5 3 5 5 5
MIX HGT (KFT)...0.3 0.4 0.4 0.4 0.3 0.4 0.4 0.4 0.3 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.WSW WSW SW SW WSW WSW WSW W W W NW NNW
TRANSP WIND SPD.6 6 6 5 5 5 5 5 5 2 3 2
TRANS SPD (M/S).3 3 3 2 2 2 2 2 2 1 1 1
DISPERSION IDX..3 3 2 2 2 2 2 2 2 1 2 1
LVORI...........4 6 6 8 9 9 9 9 9 10 10 10
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). AREAS OF FOG
EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........61 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......2200 FT AGL.
MIXING HEIGHT (M)...122-671 METERS AGL.
TRANSPORT WINDS.....NORTH 2 TO 5 MPH SHIFTING TO THE SOUTHWEST 6 TO
7 MPH LATE IN THE MORNING.
TRANSPORT WINDS M/S.NORTH AROUND 1 METERS/SECOND INCREASING TO 1 TO
2 METERS/SECOND IN THE MORNING, THEN SHIFTING
TO THE SOUTHWEST AROUND 3 METERS/SECOND LATE IN
THE MORNING.
DISPERSION INDEX....5 INCREASING TO 16 LATE IN THE MORNING.
LVORI...............6.
STABILITY CLASS.....2.
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........61 57 52 47 44 41 38 42 47 51 48 46
WEATHER COV.....ARS ARS ARS 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............51 51 54 59 64 67 70 72 72 71 70 67
RH..............100 100 100 93 81 73 66 61 64 66 68 75
20 FT WIND DIR..NNE NNE ENE E ESE S S S SSW SSW SSW S
20 FT WIND SPD..1 1 1 2 2 3 3 3 3 3 3 2
20 FT WIND GUST.5 5 6 6 7 8 8 9 9 9 9 9
MIX HGT (KFT)...0.4 0.4 0.6 0.7 1.2 1.7 2.2 2.1 2.1 2.1 2.1 2.1
MIX HGT (KM)....0.1 0.1 0.2 0.2 0.4 0.5 0.7 0.6 0.6 0.6 0.6 0.6
TRANSP WIND DIR.N N N NNE N W SW SW SW SW SW SW
TRANSP WIND SPD.2 3 5 5 5 6 6 6 7 7 6 6
TRANS SPD (M/S).1 1 2 2 2 3 3 3 3 3 3 3
DISPERSION IDX..2 3 4 5 8 13 18 18 18 16 17 14
LVORI...........10 9 9 6 4 3 3 2 2 3 3 4
FORECASTER...7
REQUESTED BY...CHANCE FILLMER
TYPE OF REQUEST...PRESCRIBED
.TAG 2527549.0/MOB
.DELDT 12/12/25
.FORMATTERVERSION 2.0.0
.EMAIL CHANCE.FILLMER@USDA.GOV
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