FNUS74 KMOB 131246 FWSMOB SPOT FORECAST FOR 100A...E.N.R. NATIONAL WEATHER SERVICE MOBILE AL 746 AM CDT WED MAR 13 2013 FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON MARCH 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING... .DISCUSSION...HIGH PRESSURE BUILDING FROM THE CENTRAL PLAINS TO THE LOWER MISSISSIPPI VALLEY WILL BRING A MUCH DRIER AIRMASS AND INCREASED NORTHWESTERLY WINDS TO THE REGION TODAY. CRITICALLY LOW RELATIVE HUMIDITY FOR AROUND 4 HOURS IS EXPECTED ACROSS SOUTHWEST AND SOUTH CENTRAL ALABAMA...WHILE CRITICALLY LOW RELATIVE HUMIDITY COMBINED WITH BREEZY NORTHWESTERLY WINDS AND ERC VALUES AROUND 30 IS EXPECTED ACROSS THE WESTERN FLORIDA PANHANDLE. THESE CONDITIONS WILL BRING CRITICAL FIRE WEATHER CONDITIONS TO THESE LOCATIONS THIS AFTERNOON. RELATIVE HUMIDITY MAY FALL TO JUST BELOW CRITICAL LEVELS OVER SOUTHEAST MISSISSIPPI THIS AFTERNOON...BUT 20 FOOT WIND SPEEDS MAY BE JUST SHY OF CRITICAL FIRE WEATHER CRITERIA THERE. DISPERSIONS ARE EXPECTED TO INCREASE ABOVE 75 ACROSS A GOOD PORTION OF THE REGION THIS AFTERNOON GIVEN INCREASED NORTHWEST FLOW THROUGH THE MIXED LAYER. A LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY WILL BE POSSIBLE OVER PORTIONS OF SOUTH CENTRAL ALABAMA AGAIN THURSDAY AFTERNOON. FOG POTENTIAL AND OTHER REMARKS...FOG IS NOT EXPECTED. .TODAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). MAX TEMPERATURE.....AROUND 68. MIN HUMIDITY........22 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 13 TO 16 MPH. MIXING HEIGHT.......200-300 FT AGL INCREASING TO 5600-5700 FT AGL. MIXING WINDS........NORTHWEST AROUND 3 MPH INCREASING TO 20 TO 22 MPH. DISPERSION INDEX....8 INCREASING TO 67 IN THE LATE MORNING AND AFTERNOON. LVORI...............4 DECREASING TO 1. TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%)...........0 0 0 0 0 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE TEMP..............51 61 66 68 65 RH................54 35 24 22 24 20 FT WIND DIR....N N NW NW NW 20 FT WIND SPD....2 8 11 11 15 20 FT WIND GUST... 15 18 18 25 MIX HGT (FT)......300 3000 5700 5700 5600 MIX HGT (M).......90 910 1740 1740 1710 TRANSP WIND DIR...N N NW NW NW TRANSP WIND SPD...9 20 21 21 22 TRANS SPD (M/S)...4 9 9 9 10 DISPERSION........10 63 67 67 70 LVORI.............3 1 1 1 1 CWR...............0 0 0 0 0 .TONIGHT... SKY/WEATHER.........CLEAR (0-10 PERCENT). MIN TEMPERATURE.....AROUND 31. MAX HUMIDITY........75 PERCENT. WIND (20 FT)........NORTHWEST WINDS AROUND 16 MPH BECOMING NORTH 6 TO 7 MPH. MIXING HEIGHT.......5600 FT AGL DECREASING TO 500 FT AGL. MIXING WINDS........NORTH 20 TO 22 MPH DECREASING TO 13 TO 16 MPH IN THE LATE EVENING AND OVERNIGHT. DISPERSION INDEX....70 DECREASING TO 7. LVORI...............1 INCREASING TO 3. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)...........0 6 6 6 6 6 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............61 52 44 39 36 34 RH................28 42 57 65 70 71 20 FT WIND DIR....NW NW NW NW N N 20 FT WIND SPD....15 10 5 5 5 5 20 FT WIND GUST...25 12 MIX HGT (FT)......5600 2800 1200 1200 800 500 MIX HGT (M).......1710 850 370 370 240 150 TRANSP WIND DIR...NW N N N N N TRANSP WIND SPD...22 20 16 16 14 13 TRANS SPD (M/S)...10 9 7 7 6 6 DISPERSION........70 26 7 7 6 6 LVORI.............1 2 3 3 3 3 CWR...............0 0 0 0 0 0 .THURSDAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 61. MIN HUMIDITY........22 PERCENT. WIND (20 FT)........NORTH WINDS AROUND 7 MPH EARLY IN THE MORNING BECOMING LIGHT...THEN BECOMING NORTH 7 TO 9 MPH IN THE LATE MORNING AND EARLY AFTERNOON SHIFTING TO THE WEST AROUND 7 MPH. MIXING HEIGHT.......500-600 FT AGL INCREASING TO 4800 FT AGL. MIXING WINDS........NORTH 10 TO 13 MPH INCREASING TO AROUND 18 MPH LATE IN THE MORNING...THEN DECREASING TO AROUND 12 MPH IN THE AFTERNOON. DISPERSION INDEX....9 INCREASING TO 64. LVORI...............3 DECREASING TO 1. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........6 10 10 10 10 10 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............32 35 48 57 61 61 RH................75 63 36 26 23 23 20 FT WIND DIR....N N N N N W 20 FT WIND SPD....5 4 8 8 6 6 20 FT WIND GUST...12 15 15 13 13 MIX HGT (FT)......500 600 3000 3000 3700 4800 MIX HGT (M).......150 180 910 910 1130 1460 TRANSP WIND DIR...N N N N N N TRANSP WIND SPD...13 10 18 18 12 12 TRANS SPD (M/S)...6 4 8 8 5 5 DISPERSION........6 11 59 59 51 64 LVORI.............3 2 1 1 1 1 CWR...............0 0 0 0 0 0 $$ FORECASTER...32 REQUESTED BY...DISPATCH TYPE OF REQUEST...PRESCRIBED .TAG 20130313.100A_.01/MOB