522
FNUS74 KMOB 191026
FWSMOB
SPOT FORECAST FOR DESOTO BB 7310...USFS
NATIONAL WEATHER SERVICE MOBILE AL
526 AM CDT TUE MAY 19 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 CDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY CONDITIONS WILL PREVAIL TODAY WITH AN ISOLATED
TO SCATTERED SHOWER OR STORM ON WEDNESDAY. THERE IS A 30% CHANCE
OF RAIN WEDNESDAY. MINIMUM RELATIVE HUMIDITY VALUES THIS AFTERNOON
WILL BE NEAR 50 TO 55%. 20 FOOT WIND GUSTS WILL BE AROUND 20 MPH
OUT OF THE SOUTH TUESDAY AFTERNOON. TRANSPORT WINDS WILL BE
MOSTLY SOUTHERLY TO SOUTHEASTERLY AND DISPERSION VALUES WILL BE
GOOD. FOR WEDNESDAY, THE MINIMUM RELATIVE HUMIDITY IS NEAR 50 TO
55%. TRANSPORT WINDS WILL BE MOSTLY SOUTHERLY, AND AFTERNOON
DISPERSION VALUES WILL BE GOOD.
FOG POTENTIAL AND OTHER REMARKS...PATCHY FOG WILL BE POSSIBLE
BOTH TONIGHT AND WEDNESDAY NIGHT. VISIBILITIES WILL BE IN THE 1 TO
3 MILE RANGE.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........54 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 7 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......4700 FT AGL.
MIXING HEIGHT (M)...427-1433 METERS AGL.
TRANSPORT WINDS.....SOUTH 10 TO 14 MPH.
TRANSPORT WINDS M/S.SOUTH 4 TO 6 METERS/SECOND.
DISPERSION INDEX....19 INCREASING TO 65.
LVORI...............3.
STABILITY CLASS.....2.
TIME (CDT) 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........73 56 32 30 38
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 10 0
TEMP............74 81 86 88 88
RH..............90 72 61 55 55
20 FT WIND DIR..SE SE SSE SSE SSE
20 FT WIND SPD..5 6 7 8 8
20 FT WIND GUST.12 14 16 17 17
MIX HGT (FT)....1400 2900 3800 4700 4700
MIX HGT (M).....430 880 1160 1430 1430
TRANSP WIND DIR.SE SSE S S S
TRANSP WIND SPD.10 13 14 13 12
TRANS WIND DIR..SE SSE S S S
TRANS SPD (M/S).4 6 6 6 5
DISPERSION IDX..19 45 65 68 62
LVORI...........4 3 1 1 1
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT). PATCHY FOG
OVERNIGHT.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 70.
MAX HUMIDITY........97 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
MIXING HEIGHT (M)...122-1433 METERS AGL.
TRANSPORT WINDS.....SOUTH 5 TO 13 MPH.
TRANSPORT WINDS M/S.SOUTH 2 TO 6 METERS/SECOND.
DISPERSION INDEX....69 DECREASING TO 4.
LVORI...............4.
STABILITY CLASS.....4.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........37 40 38 57 67 77
WEATHER COV..... PATCHY PATCHY
WEATHER TYPE....NONE NONE NONE NONE FOG FOG
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............88 80 75 73 72 71
RH..............55 72 84 90 90 93
20 FT WIND DIR..S S S N N N
20 FT WIND SPD..7 3 2 0 0 0
20 FT WIND GUST.16 12 8 5 3 3
MIX HGT (FT)....4700 400 400 400 400 400
MIX HGT (M).....1430 120 120 120 120 120
TRANSP WIND DIR.S S S S S SSE
TRANSP WIND SPD.13 10 8 6 5 5
TRANS WIND DIR..S S S S S SSE
TRANS SPD (M/S).6 4 4 3 2 2
DISPERSION IDX..69 5 4 3 2 2
LVORI...........1 3 5 6 6 6
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). PATCHY FOG EARLY
IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF
SHOWERS AND THUNDERSTORMS LATE IN THE
AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........52 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH AROUND 5 MPH LATE IN
THE AFTERNOON, THEN BECOMING LIGHT LATE IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......6100 FT AGL.
MIXING HEIGHT (M)...122-1859 METERS AGL.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
TRANSPORT WINDS M/S.SOUTH 2 TO 4 METERS/SECOND.
DISPERSION INDEX....5 INCREASING TO 17 LATE IN THE MORNING, THEN
INCREASING TO 31 LATE IN THE MORNING INCREASING
TO 45 EARLY IN THE AFTERNOON INCREASING TO 69
DECREASING TO 55 LATE IN THE AFTERNOON
INCREASING TO 68.
LVORI...............5.
STABILITY CLASS.....2.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........66 57 54 33 22 44
WEATHER COV.....PATCHY S CHC CHANCE
WEATHER TYPE....FOG NONE NONE NONE RNSHWR RNSHWR
TSTM COV........ S CHC CHANCE
CHC OF PCPN (%).0 0 0 0 20 30
TEMP............70 72 79 86 88 87
RH..............97 93 74 59 54 55
20 FT WIND DIR..N S SE SSE S S
20 FT WIND SPD..0 1 3 5 5 6
20 FT WIND GUST.3 5 8 10 12 12
MIX HGT (FT)....400 1100 2900 4100 5700 5500
MIX HGT (M).....120 340 880 1250 1740 1680
TRANSP WIND DIR.SSE SSE SSE S S S
TRANSP WIND SPD.5 6 8 8 10 8
TRANS WIND DIR..SSE SSE SSE S S S
TRANS SPD (M/S).2 3 4 4 4 4
DISPERSION IDX..2 8 27 42 73 55
LVORI...........9 6 3 1 1 1
FORECASTER...8
REQUESTED BY...JODY ROGERS
TYPE OF REQUEST...PRESCRIBED
.TAG 2613942.0/MOB
.DELDT 05/19/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSEPH.ROGERS@USDA.GOV
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