141  
FNUS74 KMOB 131125  
FWSMOB  
 
SPOT FORECAST FOR WSM EGLIN AIR FORCE BASE...WSM  
NATIONAL WEATHER SERVICE MOBILE AL  
625 AM CDT FRI JUL 13 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 CDT ON JULY 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
   
DISCUSSION
 
GENERALLY LIGHT MIXING LAYER WINDS THIS MORNING WILL BE  
COME A MORE ORGANIZED SOUTHERLY THIS AFTERNOON AFTER A GULF BREEZE  
DEVELOPS AND MOVES INLAND. ANY RAIN DEVELOPING THIS AFTERNOON WILL BE  
ISOLATED.  
 
FOG POTENTIAL AND OTHER REMARKS...FOG NOT EXPECTED.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
LAL.................NO TSTMS UNTIL 1300, THEN 1-8 STRIKES.  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........49 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 8 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......1000-2900 FT AGL INCREASING TO 5500-6100 FT  
AGL.  
MIXING HEIGHT (M)...305-884 METERS AGL INCREASING TO 1676-1859  
METERS AGL.  
TRANSPORT WINDS.....SOUTHWEST 2 TO 9 MPH.  
TRANSPORT WINDS M/S.SOUTHWEST 1 TO 4 METERS/SECOND.  
DISPERSION INDEX....9 INCREASING TO 44.  
LVORI...............5 DECREASING TO 1.  
STABILITY CLASS.....2.  
 
TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........31 28 25 22 27 28 38 38 38 38 32  
WEATHER COV..... SCH SCH SCH SCH SCH  
WEATHER TYPE.... RW RW RW RW RW  
TSTM COV........ SCH SCH SCH SCH SCH  
CHC OF PCPN (%).10 10 10 10 10 10 20 20 20 20 20  
LAL.............1 1 1 1 1 1 2 2 2 2 2  
TEMP............77 81 86 90 92 93 94 94 94 93 92  
RH..............87 78 69 61 55 52 50 49 51 52 55  
20 FT WIND DIR..NE N W SW SW SW S S S S S  
20 FT WIND SPD..1 2 2 3 4 4 5 6 6 7 7  
20 FT WIND GUST. 4 5 5 6 7 8 10 10  
MIX HGT (KFT)...1.0 1.9 2.9 3.8 4.6 5.3 6.1 5.9 5.7 5.5 5.5  
MIX HGT (KM)....0.3 0.6 0.9 1.2 1.4 1.6 1.9 1.8 1.7 1.7 1.7  
TRANSP WIND DIR.W W W W W SW SW SW SW S SW  
TRANSP WIND SPD.2 2 2 3 5 5 6 7 7 8 9  
TRANS WIND DIR..W W W W W SW SW SW SW S SW  
TRANS SPD (M/S).1 1 1 1 2 2 3 3 3 4 4  
DISPERSION IDX..9 11 15 19 23 27 31 31 32 35 44  
LVORI...........5 4 3 2 2 2 1 1 1 1 1  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.  
CHANCE OF PCPN......20 PERCENT.  
LAL.................1-8 STRIKES UNTIL 1900, THEN NO TSTMS.  
MIN TEMPERATURE.....AROUND 74.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH EARLY IN THE EVENING  
BECOMING LIGHT. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING.  
MIXING HEIGHT.......5500 FT AGL DECREASING TO 900-2100 FT AGL.  
MIXING HEIGHT (M)...1676 METERS AGL DECREASING TO 274-640 METERS  
AGL.  
TRANSPORT WINDS.....WEST 6 TO 12 MPH.  
TRANSPORT WINDS M/S.WEST 3 TO 5 METERS/SECOND.  
DISPERSION INDEX....53 DECREASING TO 4.  
LVORI...............1 INCREASING TO 8.  
STABILITY CLASS.....4.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........30 20 21 21 22 23 25 25 28 30 33 33  
WEATHER COV.....SCH  
WEATHER TYPE....RW  
TSTM COV........SCH  
CHC OF PCPN (%).20 10 10 10 10 10 10 10 10 10 10 10  
LAL.............2 1 1 1 1 1 1 1 1 1 1 1  
TEMP............89 87 85 82 80 78 77 76 75 75 75 74  
RH..............61 65 71 77 82 88 90 94 97 94 94 97  
20 FT WIND DIR..SW SW SW SW SW SW W NW NW NW NW NW  
20 FT WIND SPD..6 6 5 3 2 1 1 1 1 2 2 2  
20 FT WIND GUST.8 7 6 4  
MIX HGT (KFT)...5.5 2.1 1.0 1.0 1.0 1.0 0.9 0.9 0.9 0.9 0.9 0.9  
MIX HGT (KM)....1.7 0.6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3  
TRANSP WIND DIR.SW SW SW SW SW SW W W W W W W  
TRANSP WIND SPD.10 12 10 9 8 7 6 6 6 6 6 6  
TRANS WIND DIR..SW SW SW SW SW SW W W W W W W  
TRANS SPD (M/S).4 5 4 4 4 3 3 3 3 3 3 3  
DISPERSION IDX..53 27 17 6 5 4 4 4 4 4 4 4  
LVORI...........1 3 3 4 4 5 5 6 6 6 6 8  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). CHANCE OF SHOWERS  
AND THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......30 PERCENT.  
LAL.................NO TSTMS UNTIL 1300, THEN 9-15 STRIKES.  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........54 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH EARLY IN  
THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......900-1900 FT AGL INCREASING TO 4700-6400 FT AGL.  
MIXING HEIGHT (M)...274-579 METERS AGL INCREASING TO 1433-1951  
METERS AGL.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST 5  
TO 8 MPH IN THE AFTERNOON.  
TRANSPORT WINDS M/S.NORTH AROUND 2 METERS/SECOND SHIFTING TO THE  
SOUTHWEST 2 TO 4 METERS/SECOND IN THE  
AFTERNOON.  
DISPERSION INDEX....3 INCREASING TO 33.  
LVORI...............8 DECREASING TO 2.  
STABILITY CLASS.....2.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........34 34 36 37 39 40 42 43 44 44 45 45  
WEATHER COV..... CHC CHC CHC CHC CHC  
WEATHER TYPE.... RW RW RW RW RW  
TSTM COV........ CHC CHC CHC CHC CHC  
CHC OF PCPN (%).10 10 10 10 10 10 10 30 30 30 30 30  
LAL.............1 1 1 1 1 1 1 3 3 3 3 3  
TEMP............74 76 80 85 89 92 94 93 92 90 89 88  
RH..............100 94 82 70 61 56 54 54 56 60 64 66  
20 FT WIND DIR..NW N NW W W W SW SW S SW SW S  
20 FT WIND SPD..2 2 2 2 2 3 3 4 5 6 6 6  
20 FT WIND GUST. 4 4 5 6 7 8 8  
MIX HGT (KFT)...0.9 0.9 1.9 2.9 3.9 4.7 5.5 6.4 5.8 5.3 4.7 4.7  
MIX HGT (KM)....0.3 0.3 0.6 0.9 1.2 1.4 1.7 2.0 1.8 1.6 1.4 1.4  
TRANSP WIND DIR.NW NW NW N N NE E S S S SW SW  
TRANSP WIND SPD.5 5 5 5 5 5 5 5 5 6 7 8  
TRANS WIND DIR..NW NW NW N N NE E S S S SW SW  
TRANS SPD (M/S).2 2 2 2 2 2 2 2 2 3 3 4  
DISPERSION IDX..3 10 14 16 19 21 22 24 25 28 29 33  
LVORI...........8 6 4 3 2 2 2 2 2 2 2 3  
 

 
FORECASTER...16  
REQUESTED BY...JERRY COON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1812753.0/MOB  
.DELDT 07/13/18  
.EMAIL JERRY.COON@US.AF.MIL  
 
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