FNUS74 KMOB 131120 FWSMOB SPOT FORECAST FOR WEST BOUNDARY...FL. FOREST SERVICE NATIONAL WEATHER SERVICE MOBILE AL 620 AM CDT WED MAR 13 2013 FORECAST IS BASED ON IGNITION TIME OF 0640 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...NO FOG IS 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 14 MPH. MIXING HEIGHT.......300 FT AGL INCREASING TO 3000 FT AGL LATE IN THE MORNING...THEN INCREASING TO 5700 FT AGL EARLY IN THE AFTERNOON DECREASING TO 5400 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........NORTH AROUND 6 MPH INCREASING TO NORTHWEST 20 TO 22 MPH IN THE LATE MORNING AND AFTERNOON. DISPERSION INDEX....5 INCREASING TO 63 LATE IN THE MORNING...THEN INCREASING TO 96 EARLY IN THE AFTERNOON DECREASING TO 70 LATE IN THE AFTERNOON. LVORI...............4 DECREASING TO 1. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........0 0 0 0 0 0 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............39 45 57 64 67 67 RH................82 68 43 30 23 22 20 FT WIND DIR....NW NW N N NW NW 20 FT WIND SPD....3 1 8 8 11 14 20 FT WIND GUST...10 15 15 18 21 MIX HGT (FT)......300 300 3000 3000 5700 5400 MIX HGT (M).......90 90 910 910 1740 1650 TRANSP WIND DIR...N N N N NW NW TRANSP WIND SPD...6 6 20 20 22 22 TRANS SPD (M/S)...3 3 9 9 10 10 DISPERSION........3 6 63 63 96 70 LVORI.............4 3 1 1 1 1 CWR...............0 0 0 0 0 0 .TONIGHT... SKY/WEATHER.........CLEAR (0-5 PERCENT). MIN TEMPERATURE.....AROUND 30. MAX HUMIDITY........78 PERCENT. WIND (20 FT)........NORTHWEST WINDS 12 TO 14 MPH BECOMING NORTH 5 TO 6 MPH IN THE LATE EVENING AND OVERNIGHT. MIXING HEIGHT.......5400 FT AGL DECREASING TO 600-700 FT AGL. MIXING WINDS........NORTHWEST AROUND 22 MPH BECOMING NORTH 13 TO 15 MPH. DISPERSION INDEX....70 DECREASING TO 6. LVORI...............1 INCREASING TO 4. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)...........0 3 3 3 3 3 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............60 51 42 38 35 33 RH................27 42 60 68 72 73 20 FT WIND DIR....NW NW NW NW NW N 20 FT WIND SPD....14 10 5 5 5 4 20 FT WIND GUST...21 17 MIX HGT (FT)......5400 2300 700 700 500 500 MIX HGT (M).......1650 700 210 210 150 150 TRANSP WIND DIR...NW N N N N N TRANSP WIND SPD...22 15 13 13 13 13 TRANS SPD (M/S)...10 7 6 6 6 6 DISPERSION........70 20 6 6 6 6 LVORI.............1 2 3 3 3 4 CWR...............0 0 0 0 0 0 .THURSDAY... SKY/WEATHER.........SUNNY (0-10 PERCENT). MAX TEMPERATURE.....AROUND 62. MIN HUMIDITY........22 PERCENT. WIND (20 FT)........NORTH WINDS AROUND 5 MPH EARLY IN THE MORNING BECOMING LIGHT...THEN BECOMING NORTH 6 TO 8 MPH IN THE LATE MORNING AND EARLY AFTERNOON SHIFTING TO THE NORTHWEST 5 TO 6 MPH. MIXING HEIGHT.......400-500 FT AGL INCREASING TO 4600 FT AGL. MIXING WINDS........NORTH AROUND 13 MPH DECREASING TO AROUND 8 MPH EARLY IN THE MORNING...THEN INCREASING TO AROUND 18 MPH LATE IN THE MORNING DECREASING TO 10 TO 12 MPH IN THE AFTERNOON. DISPERSION INDEX....8 INCREASING TO 56 IN THE LATE MORNING AND AFTERNOON. LVORI...............4 DECREASING TO 1. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........3 11 11 11 11 11 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............31 34 47 57 61 62 RH................78 67 39 27 22 22 20 FT WIND DIR....N N NE NE N NW 20 FT WIND SPD....4 3 7 7 5 5 20 FT WIND GUST... 14 14 MIX HGT (FT)......500 400 3000 3000 3700 4600 MIX HGT (M).......150 120 910 910 1130 1400 TRANSP WIND DIR...N N N N N N TRANSP WIND SPD...13 8 18 18 12 10 TRANS SPD (M/S)...6 4 8 8 5 4 DISPERSION........6 10 59 59 52 56 LVORI.............4 3 1 1 1 1 CWR...............0 0 0 0 0 0 $$ FORECASTER...32 REQUESTED BY...ASHLEY BAXLEY TYPE OF REQUEST...PRESCRIBED .TAG 20130313.WESTB.02/MOB