966
FNUS74 KMOB 171014
FWSMOB
SPOT FORECAST FOR DESOTO BLOCK 0250 COMP. 596-598...USFS
NATIONAL WEATHER SERVICE MOBILE AL
514 AM CDT SUN MAY 17 2026
FORECAST IS BASED ON IGNITION TIME OF 0615 CDT ON MAY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY CONDITIONS WILL PERSIST THROUGH TODAY WITH A
30% CHANCE OF RAIN MONDAY. MINIMUM RELATIVE HUMIDITY THIS
AFTERNOON WILL BE NEAR 55%. 20 FT WIND GUSTS WILL BE UP TO NEAR 20
MPH THIS AFTERNOON WITH TRANSPORT MOSTLY SOUTHERLY TO
SOUTHEASTERLY. AFTERNOON DISPERSION VALUES WILL BE GENERALLY GOOD
TO GOOD. FOR MONDAY, THE MINIMUM RELATIVE HUMIDITY SHOULD INCREASE
TO NEAR 60%. 20 FT WIND GUSTS WILL BE UP TO NEAR 20 MPH WITH
TRANSPORT WINDS MOSTLY SOUTH-SOUTHEASTERLY. AFTERNOON DISPERSION
VALUES WILL BE GOOD. NO SEABREEZE IS EXPECTED AND WOULD RESULT IN
NO CHANGES IN CONDITIONS.
FOG POTENTIAL AND OTHER REMARKS...LIGHT PATCHY FOG COULD BE
POSSIBLE EACH NIGHT WITH THE BEST CHANCE EARLY MONDAY MORNING.
VISIBILITIES AROUND 1 TO 3 MILES COULD BE POSSIBLE WHERE FOG DOES
DEVELOP.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........59 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 6 TO 10 MPH IN THE
LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......4100 FT AGL.
MIXING HEIGHT (M)...122-1250 METERS AGL.
TRANSPORT WINDS.....SOUTH 7 TO 14 MPH.
TRANSPORT WINDS M/S.SOUTH 3 TO 6 METERS/SECOND.
DISPERSION INDEX....5 INCREASING TO 51.
LVORI...............5.
STABILITY CLASS.....2.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........13 11 24 28 43 47
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............64 69 79 83 84 85
RH..............100 93 69 63 61 59
20 FT WIND DIR..ESE SE SSE S S SSE
20 FT WIND SPD..3 3 7 9 10 12
20 FT WIND GUST.7 8 12 14 16 16
MIX HGT (FT)....400 1000 3200 3900 4000 3500
MIX HGT (M).....120 300 980 1190 1220 1070
TRANSP WIND DIR.SE SSE S S S S
TRANSP WIND SPD.7 9 10 12 13 13
TRANS WIND DIR..SE SSE S S S S
TRANS SPD (M/S).3 4 4 5 6 6
DISPERSION IDX..3 13 43 51 54 48
LVORI...........9 5 1 1 1 1
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 70.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 9 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......500 FT AGL.
MIXING HEIGHT (M)...152-1067 METERS AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 14 MPH.
TRANSPORT WINDS M/S.SOUTHEAST 4 TO 6 METERS/SECOND.
DISPERSION INDEX....56 DECREASING TO 11.
LVORI...............4.
STABILITY CLASS.....4.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........47 55 57 66 58 64
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............82 76 74 73 72 71
RH..............63 76 82 84 87 90
20 FT WIND DIR..SSE SE SE SE SE SE
20 FT WIND SPD..10 7 6 5 5 5
20 FT WIND GUST.15 12 10 10 9 10
MIX HGT (FT)....3500 700 700 700 700 500
MIX HGT (M).....1070 210 210 210 210 150
TRANSP WIND DIR.S SSE SSE SE SSE SSE
TRANSP WIND SPD.14 12 10 12 12 9
TRANS WIND DIR..S SSE SSE SE SSE SSE
TRANS SPD (M/S).6 5 4 5 5 4
DISPERSION IDX..56 8 7 7 7 6
LVORI...........1 4 4 4 5 6
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
MOSTLY SUNNY (35-45 PERCENT). CHANCE OF SHOWERS
IN THE MORNING. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........61 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 10 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......4500 FT AGL.
MIXING HEIGHT (M)...152-1372 METERS AGL.
TRANSPORT WINDS.....SOUTH 9 TO 17 MPH.
TRANSPORT WINDS M/S.SOUTHEAST 4 TO 8 METERS/SECOND.
DISPERSION INDEX....8 INCREASING TO 26 EARLY IN THE MORNING, THEN
INCREASING TO 36 LATE IN THE MORNING INCREASING
TO 49 LATE IN THE MORNING INCREASING TO 66
DECREASING TO 59 LATE IN THE AFTERNOON.
LVORI...............3.
STABILITY CLASS.....3.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........73 81 79 69 61 37
WEATHER COV..... CHANCE CHANCE CHANCE S CHC S CHC
WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........ S CHC S CHC
CHC OF PCPN (%).0 30 30 30 20 20
TEMP............72 74 81 85 86 86
RH..............87 87 72 65 63 63
20 FT WIND DIR..SE SE SSE SSE SSE SSE
20 FT WIND SPD..5 8 10 12 10 12
20 FT WIND GUST.10 14 16 18 17 18
MIX HGT (FT)....500 1700 3000 4000 4500 3800
MIX HGT (M).....150 520 910 1220 1370 1160
TRANSP WIND DIR.SSE SE SSE SSE SSE SSE
TRANSP WIND SPD.9 12 15 16 17 16
TRANS WIND DIR..SSE SE SSE SSE SSE SSE
TRANS SPD (M/S).4 5 7 7 8 7
DISPERSION IDX..6 26 47 52 70 61
LVORI...........5 4 3 1 1 1
FORECASTER...8
REQUESTED BY...CLIFF WILLIS
TYPE OF REQUEST...PRESCRIBED
.TAG 2613602.3/MOB
.DELDT 05/17/26
.FORMATTERVERSION 2.0.0
.EMAIL CLIFTON.WILLIS@USDA.GOV
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