629  
FNUS74 KMOB 291233  
FWSMOB  
 
SPOT FORECAST FOR BANSA A-77...USAF EGLIN  
NATIONAL WEATHER SERVICE MOBILE AL  
733 AM CDT SAT APR 29 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 CDT ON APRIL 29.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
..WIND ADVISORY IN EFFECT UNTIL MIDNIGHT CDT SUNDAY NIGHT
 
 
   
DISCUSSION
 
A STRONG MIXED LAYER SOUTHEAST FLOW TODAY WILL BE OF  
MOST IMPACT TODAY DUE TO THE DIFFERENCE IN PRESSURE BETWEEN A  
RIDGE OF HIGH PRESSURE TO THE EAST AND AN INTENSIFYING STORM  
SYSTEM OVER THE PLAINS. DISPERSION WILL BE GOOD WITH FREQUENT WIND  
GUSTS LIKELY NEAR 35 MPH. THESE CONDITIONS LIKELY TO CONTINUE  
INTO THE DAY SUNDAY. STORMS LOOK TO BE ISOLATED IN COVERAGE.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).  
CHANCE OF PCPN......10 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 81.  
MIN HUMIDITY........74 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 15 TO 20 MPH. FREQUENT  
GUSTS UP TO 35 MPH.  
MIXING HEIGHT.......1400-2500 FT AGL.  
MIXING HEIGHT (M)...427-762 METERS AGL.  
TRANSPORT WINDS.....SOUTHEAST 21 TO 24 MPH.  
TRANSPORT WINDS M/S.SOUTHEAST 9 TO 11 METERS/SECOND.  
DISPERSION INDEX....INCREASING TO 51.  
LVORI...............3.  
STABILITY CLASS.....4.  
 
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........70 69 68 66 65 65 64 63 62 60  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10  
LAL.............1 1 1 1 1 1 1 1 1 1  
TEMP............76 78 79 80 80 81 81 81 80 79  
RH..............87 82 79 77 77 74 74 74 77 79  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..14 15 16 17 18 19 19 19 19 18  
20 FT WIND GUST.20 25 25 30 30 35 35 35 35 30  
MIX HGT (KFT)...1.4 1.6 1.9 2.1 2.3 2.5 2.4 2.4 2.3 2.3  
MIX HGT (KM)....0.4 0.5 0.6 0.6 0.7 0.8 0.7 0.7 0.7 0.7  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE  
TRANSP WIND SPD.21 22 23 23 24 24 24 23 23 22  
TRANS WIND DIR..SE SE SE SE SE SE SE SE SE SE  
TRANS SPD (M/S).9 10 10 10 11 11 11 10 10 10  
DISPERSION IDX..35 40 45 48 50 51 50 49 48 47  
LVORI...........4 3 3 3 3 3 3 3 3 3  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT).  
CHANCE OF PCPN......10 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 73.  
MAX HUMIDITY........97 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 13 TO 18 MPH.  
MIXING HEIGHT.......900 FT AGL.  
MIXING HEIGHT (M)...274 METERS AGL.  
TRANSPORT WINDS.....SOUTHEAST 14 TO 22 MPH.  
TRANSPORT WINDS M/S.SOUTHEAST 6 TO 10 METERS/SECOND.  
DISPERSION INDEX....DECREASING TO 14.  
LVORI...............4 TO 5.  
STABILITY CLASS.....4.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........59 59 58 57 56 55 54 53 54 58 61 64  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............77 76 75 75 75 75 75 75 74 74 74 73  
RH..............85 87 90 90 90 90 90 90 93 93 93 97  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..18 17 16 15 15 14 13 13 13 13 14 15  
20 FT WIND GUST.25 25 20 20 20 20 20 20 20 20 20 20  
MIX HGT (KFT)...2.3 1.6 1.2 1.2 1.2 1.1 1.0 0.9 0.9 1.0 1.0 1.2  
MIX HGT (KM)....0.7 0.5 0.4 0.4 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.4  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE SE SE  
TRANSP WIND SPD.22 21 20 18 17 15 14 14 14 15 17 21  
TRANS WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
TRANS SPD (M/S).10 9 9 8 8 7 6 6 6 7 8 9  
DISPERSION IDX..47 26 21 20 19 16 14 14 15 16 20 23  
LVORI...........3 4 4 4 4 4 5 5 5 5 5 5  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 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 80.  
MIN HUMIDITY........74 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 16 TO 23 MPH. GUSTS UP TO 35  
MPH INCREASING TO 40 MPH IN THE AFTERNOON.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......1400-2500 FT AGL.  
MIXING HEIGHT (M)...427-762 METERS AGL.  
TRANSPORT WINDS.....SOUTH 23 TO 30 MPH.  
TRANSPORT WINDS M/S.SOUTH 10 TO 13 METERS/SECOND.  
DISPERSION INDEX....INCREASING TO 65.  
LVORI...............3.  
STABILITY CLASS.....4.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........67 68 68 68 67 67 66 66 68 71 75 78  
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 10 20 20 20 20 20  
LAL.............1 1 1 1 1 1 1 2 2 2 2 2  
TEMP............73 74 76 78 79 80 80 80 79 79 79 77  
RH..............93 90 85 79 77 74 74 74 77 77 77 82  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..16 17 18 19 20 21 22 23 22 21 20 20  
20 FT WIND GUST.20 25 25 30 30 35 40 40 40 35 35 30  
MIX HGT (KFT)...1.4 1.6 1.9 2.2 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4  
MIX HGT (KM)....0.4 0.5 0.6 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.7  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE S S S  
TRANSP WIND SPD.23 26 28 29 30 29 28 26 28 29 29 28  
TRANS WIND DIR..SE SE SE SE SE SE SE SE SE S S S  
TRANS SPD (M/S).10 12 13 13 13 13 13 12 13 13 13 13  
DISPERSION IDX..28 47 54 60 65 65 63 61 60 59 58 55  
LVORI...........4 4 4 3 3 3 3 3 3 3 3 3  
 

 
FORECASTER...10  
REQUESTED BY...JERRY COON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1708005.0/MOB  
.EMAIL JERRY.COON@US.AF.MIL  
 
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