FNUS74 KMOB 171146 FWSMOB SPOT FORECAST FOR C9...U.S. FOREST SERVICE NATIONAL WEATHER SERVICE MOBILE AL 646 AM CDT WED APR 17 2013 FORECAST IS BASED ON IGNITION TIME OF 0930 CDT ON APRIL 17. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A MOIST SOUTHEASTERLY FLOW WILL CONTINUE OVER THE AREA THROUGH THURSDAY. SHOWERS AND THUNDERSTORMS WILL BE LIKELY THURSDAY NIGHT AND FRIDAY AS A COLD FRONT MOVES ACROSS THE REGION. COOLER AND DRIER AIR WILL MOVE INTO THE REGION THIS WEEKEND IN THE WAKE OF THE FRONTAL PASSAGE. AFTERNOON RELATIVE HUMIDITY VALUES WILL REMAIN WELL ABOVE CRITICAL LEVELS THROUGH FRIDAY...BUT MAY FALL TO THE 30-40 PERCENT RANGE BY SATURDAY AFTERNOON. AFTERNOON DISPERSIONS LOOK TO BE MOSTLY GOOD TODAY AND THURSDAY. FOG POTENTIAL AND OTHER REMARKS...PATCHY FOG WILL CONTINUE TO BE POSSIBLE DURING THE LATE NIGHT AND EARLY MORNING HOURS THROUGH THURSDAY MORNING. FOG MAY BE LOCALLY DENSE...ESPECIALLY IN LOW LYING AREAS. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). PATCHY FOG EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 87. MIN HUMIDITY........51 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 6 TO 9 MPH. MIXING HEIGHT.......200 FT AGL INCREASING TO 6600 FT AGL. MIXING WINDS........EAST AROUND 2 MPH INCREASING TO SOUTHEAST 10 TO 12 MPH. DISPERSION INDEX....7 INCREASING TO 37. LVORI...............9 DECREASING TO 1. TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%)...........75 82 67 67 67 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE TEMP..............69 77 83 85 83 RH................88 68 55 51 53 20 FT WIND DIR....E SE SE SE S 20 FT WIND SPD....5 7 8 8 8 20 FT WIND GUST... MIX HGT (FT)......600 3100 5900 5900 6600 MIX HGT (M).......180 940 1800 1800 2010 TRANSP WIND DIR...E SE SE SE SE TRANSP WIND SPD...10 12 12 12 10 TRANS SPD (M/S)...4 5 5 5 4 DISPERSION........11 28 38 38 36 LVORI.............6 3 1 1 1 CWR...............10 10 10 10 10 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING PARTLY CLOUDY (40-50 PERCENT). PATCHY FOG AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 62. MAX HUMIDITY........97 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 9 MPH SHIFTING TO THE SOUTHEAST 5 TO 6 MPH AFTER MIDNIGHT. MIXING HEIGHT.......6600 FT AGL DECREASING TO 300-400 FT AGL. MIXING WINDS........SOUTHEAST 6 TO 10 MPH DECREASING TO AROUND 5 MPH EARLY IN THE MORNING. DISPERSION INDEX....36 DECREASING TO 7. LVORI...............1 INCREASING TO 8. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)...........67 59 59 59 45 45 WEATHER COV....... PATCHY PATCHY WEATHER TYPE......NONE NONE NONE NONE FOG FOG TEMP..............81 75 67 64 63 63 RH................57 69 85 93 96 95 20 FT WIND DIR....S S S S SE SE 20 FT WIND SPD....8 7 5 5 5 5 20 FT WIND GUST... MIX HGT (FT)......6600 2600 1200 1200 400 300 MIX HGT (M).......2010 790 370 370 120 90 TRANSP WIND DIR...SE SE SE SE SE SE TRANSP WIND SPD...10 8 6 6 6 5 TRANS SPD (M/S)...4 4 3 3 3 2 DISPERSION........36 11 4 4 4 3 LVORI.............1 3 6 6 8 8 CWR...............10 10 10 10 0 0 .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). PATCHY FOG EARLY IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS AND SHOWERS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 84. MIN HUMIDITY........52 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 6 TO 7 MPH INCREASING TO SOUTH 13 TO 14 MPH IN THE LATE MORNING AND AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. MIXING HEIGHT.......300 FT AGL INCREASING TO 5700-5900 FT AGL. MIXING WINDS........SOUTHEAST AROUND 5 MPH INCREASING TO AROUND 13 MPH EARLY IN THE MORNING...THEN INCREASING TO SOUTH 20 TO 21 MPH IN THE LATE MORNING AND AFTERNOON. DISPERSION INDEX....3 INCREASING TO 62. LVORI...............8 DECREASING TO 1. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........45 66 66 66 56 56 WEATHER COV.......PATCHY S CHC S CHC WEATHER TYPE......FOG NONE NONE NONE TSTORM TSTORM TEMP..............63 66 74 80 83 83 RH................97 92 72 58 53 53 20 FT WIND DIR....SE SE SE SE S S 20 FT WIND SPD....5 6 11 11 11 14 20 FT WIND GUST... 18 18 20 21 MIX HGT (FT)......300 600 4200 4200 5900 5700 MIX HGT (M).......90 180 1280 1280 1800 1740 TRANSP WIND DIR...SE SE S S S S TRANSP WIND SPD...5 13 21 21 20 20 TRANS SPD (M/S)...2 6 9 9 9 9 DISPERSION........3 14 59 59 64 63 LVORI.............8 5 1 1 1 1 CWR...............0 10 10 10 20 20 $$ FORECASTER...32 REQUESTED BY...BRAD HALL TYPE OF REQUEST...PRESCRIBED .TAG 20130417.C9___.01/MOB