309
FNUS74 KMOB 191219
FWSMOB
SPOT FORECAST FOR DESOTO BLOCK 8359...USFS
NATIONAL WEATHER SERVICE MOBILE AL
619 AM CST THU FEB 19 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 CST ON FEBRUARY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...HIGH DISPERSION INDEX AROUND 75 EXPECTED THIS AFTERNOON OVER THE
BURN AREA...
DISCUSSION
SCATTERED SHOWERS AND STORMS ARE POSSIBLE AT THE BURN SITE
LATE TONIGHT THROUGH FRIDAY AFTERNOON WITH THE HIGHEST RAIN CHANCE IN THE
AFTERNOON HOURS. MINIMUM RELATIVE HUMIDITY REMAINS WELL ABOVE CRITICAL
THRESHOLDS. SOUTHWESTERLY TRANSPORT WINDS WILL BE GUSTY TODAY WITH GUSTS
UP TO 25 KNOTS POSSIBLE AT THE BURN SITE, MAINLY AFTER 11AM. TRANSPORT
WINDS WILL BE MORE SOUTH-SOUTHWESTERLY ON FRIDAY. AFTERNOON DISPERSION
WILL BE GOOD BOTH DAYS.
FOG POTENTIAL AND OTHER REMARKS...PATCHY FOG IS POSSIBLE IN THE PRE-
DAWN HOURS. MAX LVORI IS AN 8 IN THE EARLY MORNING HOURS ON FRIDAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
MOSTLY SUNNY (40-50 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........56 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 13 MPH.
MIXING HEIGHT.......4600 FT AGL.
MIXING HEIGHT (M)...274-1402 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 12 TO 21 MPH INCREASING TO 17 TO 25
MPH IN THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS M/S.SOUTHWEST 7 TO 11 METERS/SECOND.
DISPERSION INDEX....15 INCREASING TO 27 EARLY IN THE MORNING, THEN
INCREASING TO 41 LATE IN THE MORNING INCREASING
TO 56 LATE IN THE MORNING INCREASING TO 71
DECREASING TO 49 LATE IN THE AFTERNOON.
LVORI...............3.
STABILITY CLASS.....3.
TIME (CST) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........82 77 58 37 34 57
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 10 10 10
TEMP............67 71 77 81 82 78
RH..............97 90 69 58 56 67
20 FT WIND DIR..SSW SSW SSW SSW SSW SSW
20 FT WIND SPD..8 12 14 14 15 14
20 FT WIND GUST.17 21 24 25 25 23
MIX HGT (FT)....900 2200 3300 4400 4600 4600
MIX HGT (M).....270 670 1010 1340 1400 1400
TRANSP WIND DIR.SSW SSW SW SW SW S
TRANSP WIND SPD.12 21 24 25 24 17
TRANS WIND DIR..SSW SSW SW SW SW S
TRANS SPD (M/S).5 9 11 11 11 8
DISPERSION IDX..15 41 60 75 71 49
LVORI...........5 4 1 1 1 1
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
SHOWERS LATE IN THE EVENING. CHANCE OF SHOWERS
OVERNIGHT.
CHANCE OF PCPN......40 PERCENT.
MIN TEMPERATURE.....AROUND 66.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 12 MPH.
MIXING HEIGHT.......600 FT AGL.
MIXING HEIGHT (M)...183-366 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 9 TO 17 MPH.
TRANSPORT WINDS M/S.SOUTHWEST 4 TO 8 METERS/SECOND.
DISPERSION INDEX....11.
LVORI...............6.
STABILITY CLASS.....3.
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........66 82 85 89 93 93
WEATHER COV..... S CHC CHANCE CHANCE CHANCE
WEATHER TYPE....NONE NONE RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........
CHC OF PCPN (%).10 10 20 30 30 40
TEMP............75 71 70 70 70 67
RH..............79 90 93 93 93 100
20 FT WIND DIR..S SSW SSW SSW SSW SSW
20 FT WIND SPD..13 12 10 9 8 6
20 FT WIND GUST.23 22 22 20 20 12
MIX HGT (FT)....1100 1100 1200 1200 1100 800
MIX HGT (M).....340 340 370 370 340 240
TRANSP WIND DIR.SSW S SSW SW SW SW
TRANSP WIND SPD.15 15 16 17 15 10
TRANS WIND DIR..SSW S SSW SW SW SW
TRANS SPD (M/S).7 7 7 8 7 4
DISPERSION IDX..15 14 14 15 13 8
LVORI...........4 5 5 5 5 8
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
MOSTLY SUNNY (40-50 PERCENT). CHANCE OF SHOWERS
THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
CHANCE OF PCPN......50 PERCENT.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........61 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......3800 FT AGL.
MIXING HEIGHT (M)...152-1158 METERS AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 16 MPH.
TRANSPORT WINDS M/S.SOUTHWEST 4 TO 7 METERS/SECOND.
DISPERSION INDEX....16 INCREASING TO 33 LATE IN THE MORNING, THEN
INCREASING TO 44 EARLY IN THE AFTERNOON
INCREASING TO 65 EARLY IN THE AFTERNOON
DECREASING TO 50.
LVORI...............4.
STABILITY CLASS.....2.
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........87 85 71 52 46 45
WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........ S CHC S CHC S CHC
CHC OF PCPN (%).40 40 40 50 50 50
TEMP............67 67 73 79 82 81
RH..............100 100 90 69 61 63
20 FT WIND DIR..SSW SSW SSW SSW S S
20 FT WIND SPD..6 7 7 8 8 7
20 FT WIND GUST.13 15 14 13 12 12
MIX HGT (FT)....500 1000 2200 3800 3200 2900
MIX HGT (M).....150 300 670 1160 980 880
TRANSP WIND DIR.SW SSW SSW SSW SSW SSW
TRANSP WIND SPD.8 13 14 16 16 14
TRANS WIND DIR..SW SSW SSW SSW SSW SSW
TRANS SPD (M/S).4 6 6 7 7 6
DISPERSION IDX..11 15 28 44 61 49
LVORI...........7 5 4 1 1 1
FORECASTER...7
REQUESTED BY...CLIFF WILLIS
TYPE OF REQUEST...PRESCRIBED
.TAG 2602852.2/MOB
.DELDT 02/19/26
.FORMATTERVERSION 2.0.0
.EMAIL CLIFTON.WILLIS@USDA.GOV
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