572  
FNUS74 KMOB 151951  
FWSMOB  
 
SPOT FORECAST FOR CHICK 377 378...USFS  
NATIONAL WEATHER SERVICE MOBILE AL  
151 PM CST SAT FEB 15 2020  
 
FORECAST IS BASED ON IGNITION TIME OF 1400 CST ON FEBRUARY 15.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
...LOW DISPERSION INDEX AROUND 18 EXPECTED SUNDAY OVER THE BURN AREA...  
   
DISCUSSION
 
DRY CONDITIONS THIS AFTERNOON AND EARLY EVENING WILL BE  
FOLLOWED BY SCATTERED SHOWERS DEVELOPING LATER TONIGHT. SCATTERED  
SHOWERS ARE EXPECTED TO CONTINUE ON SUNDAY. RELATIVE HUMIDITY VALUES  
THIS AFTERNOON WILL BE DOWN TO 20 PERCENT, THEN MUCH HIGHER RELATIVE  
HUMIDITY VALUES ARE EXPECTED ON SUNDAY WITH MINIMUM VALUES NEAR 70  
PERCENT. DISPERSION VALUES WILL BE GENERALLY GOOD THIS AFTERNOON AND  
GENERALLY POOR ON SUNDAY. TRANSPORT WINDS WILL BE SOUTHEASTERLY THIS  
AFTERNOON AND SUNDAY.  
 
FOG POTENTIAL AND OTHER REMARKS...FOG DEVELOPMENT IS NOT EXPECTED  
TONIGHT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
CHANCE OF PCPN......10 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........20 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS AROUND 7 MPH  
BECOMING LIGHT.  
MIXING HEIGHT.......4000 FT AGL.  
MIXING HEIGHT (M)...1128-1219 METERS AGL.  
TRANSPORT WINDS.....SOUTHEAST 9 TO 12 MPH.  
TRANSPORT WINDS M/S.SOUTHEAST 4 TO 5 METERS/SECOND.  
DISPERSION INDEX....50.  
LVORI...............1.  
STABILITY CLASS.....2.  
 
TIME (CST) 2PM 3PM 4PM 5PM  
SKY (%).........6 8 19 29  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 10  
LAL.............1 1 1 1  
TEMP............64 65 64 60  
RH..............23 21 22 26  
20 FT WIND DIR..ESE SE SE SE  
20 FT WIND SPD..7 7 6 5  
20 FT WIND GUST.10 10 10 8  
MIX HGT (KFT)...3.7 4.0 4.0 4.0  
MIX HGT (KM)....1.1 1.2 1.2 1.2  
TRANSP WIND DIR.SE SE SE SE  
TRANSP WIND SPD.10 10 10 12  
TRANS WIND DIR..SE SE SE SE  
TRANS SPD (M/S).4 4 4 5  
DISPERSION IDX..47 46 49 54  
LVORI...........1 1 1 1  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS IN THE EVENING, THEN RAIN SHOWERS  
LIKELY OVERNIGHT.  
CHANCE OF PCPN......60 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 45.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......300 FT AGL.  
MIXING HEIGHT (M)...91-396 METERS AGL.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 14 MPH SHIFTING TO THE EAST  
AROUND 3 MPH EARLY IN THE MORNING.  
TRANSPORT WINDS M/S.SOUTHEAST 2 TO 6 METERS/SECOND SHIFTING TO THE  
EAST EARLY IN THE MORNING.  
DISPERSION INDEX....4.  
LVORI...............4.  
STABILITY CLASS.....4.  
 
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........39 43 48 52 60 68 76 80 85 90 91 91  
WEATHER COV..... SCH SCH SCH CHC CHC LKY CHC CHC  
WEATHER TYPE.... RW RW RW RW RW RW RW RW  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 20 20 20 30 40 60 50 50  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............54 51 50 49 49 48 48 48 48 48 47 46  
RH..............46 56 56 63 68 68 71 74 76 74 83 86  
20 FT WIND DIR..SE SSE SSE SSE SSE SE SE SE E E E E  
20 FT WIND SPD..4 4 3 3 3 2 2 1 1 1 2 3  
20 FT WIND GUST.5 5 6 6 6 5 5 5 4 4 4 6  
MIX HGT (KFT)...1.3 0.8 0.8 0.8 0.7 0.6 0.5 0.5 0.5 0.4 0.4 0.3  
MIX HGT (KM)....0.4 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.1 0.1 0.1  
TRANSP WIND DIR.SSE SSE SSE SSE SSE S S SSE SE SE ESE E  
TRANSP WIND SPD.13 14 14 13 12 9 7 6 5 5 5 3  
TRANS WIND DIR..SSE SSE SSE SSE SSE S S SSE SE SE ESE E  
TRANS SPD (M/S).6 6 6 6 5 4 3 3 2 2 2 1  
DISPERSION IDX..5 6 6 5 5 4 3 3 2 2 2 2  
LVORI...........2 3 3 3 3 3 3 3 4 4 5 5  
   
SUNDAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF RAIN SHOWERS,  
THEN SLIGHT CHANCE OF RAIN SHOWERS LATE IN THE  
AFTERNOON.  
CHANCE OF PCPN......50 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 62.  
MIN HUMIDITY........67 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......1600 FT AGL.  
MIXING HEIGHT (M)...91-488 METERS AGL.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
TRANSPORT WINDS M/S.SOUTHEAST 2 TO 4 METERS/SECOND.  
DISPERSION INDEX....9 INCREASING TO 15 LATE IN THE AFTERNOON.  
LVORI...............5.  
STABILITY CLASS.....2.  
 
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........92 93 93 94 95 95 96 93 90 87 84 81  
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC SCH  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........  
CHC OF PCPN (%).40 40 40 50 40 40 40 40 40 30 30 20  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............45 45 46 49 52 54 56 59 60 62 61 60  
RH..............93 96 100 93 86 89 80 77 72 70 67 80  
20 FT WIND DIR..E E ESE ESE ESE ESE ESE SE SE SE SE ESE  
20 FT WIND SPD..4 4 4 4 4 4 4 4 3 3 3 3  
20 FT WIND GUST.6 6 6 7 7 6 6 7 6 6 6 5  
MIX HGT (KFT)...0.3 0.3 0.4 0.4 0.7 0.9 1.2 1.3 1.5 1.6 1.6 1.6  
MIX HGT (KM)....0.1 0.1 0.1 0.1 0.2 0.3 0.4 0.4 0.5 0.5 0.5 0.5  
TRANSP WIND DIR.E E E ESE ESE SE SSE SSE SSE SSE SSE SE  
TRANSP WIND SPD.5 7 9 10 10 10 9 9 8 8 7 6  
TRANS WIND DIR..E E E ESE ESE SE SSE SSE SSE SSE SSE SE  
TRANS SPD (M/S).2 3 4 4 4 4 4 4 4 4 3 3  
DISPERSION IDX..4 4 6 7 7 9 11 13 15 16 15 13  
LVORI...........6 6 6 5 4 4 4 4 3 3 3 4  
 

 
FORECASTER...29  
REQUESTED BY...RODNEY LANDRUM  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2002346.1/MOB  
.DELDT 02/15/20  
.FORMATTERVERSION 1.0.26  
.EMAIL RODNEY.LANDRUM@USDA.GOV  
 
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