FNUS74 KMOB 121247 FWSMOB SPOT FORECAST FOR 103 S3 4...E.N.R. NATIONAL WEATHER SERVICE MOBILE AL 747 AM CDT TUE MAR 12 2013 FORECAST IS BASED ON IGNITION TIME OF 0805 CDT ON MARCH 12. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...SURFACE HIGH PRESSURE WILL BUILD FROM THE CENTRAL PLAINS TO THE GULF COAST THROUGH WEDNESDAY...WHICH WILL RESULT IN A NORTHERLY FLOW PATTERN ACROSS THE REGION. A DRY AIRMASS WILL CONTINUE TO SPREAD INTO THE REGION THROUGH WEDNESDAY...RESULTING IN MINIMUM RELATIVE HUMIDITY VALUES IN THE 30-40 PERCENT RANGE TODAY... FALLING TO THE 20-30 PERCENT RANGE ACROSS MOST LOCATIONS BY WEDNESDAY AFTERNOON. THOUGH RELATIVE HUMIDITY WILL FALL TO CRITICAL LEVELS WEDNESDAY...DURATION AND OTHER REQUIREMENTS DO NOT LOOK TO BE MET FOR A FIRE WEATHER WATCH. DISPERSIONS LOOK TO BE GENERALLY GOOD TO GOOD TODAY AND WEDNESDAY. FOG POTENTIAL AND OTHER REMARKS...NO FOG IS EXPECTED. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). MAX TEMPERATURE.....AROUND 64. MIN HUMIDITY........33 PERCENT. WIND (20 FT)........NORTH WINDS 9 TO 12 MPH. GUSTS UP TO 21 MPH EARLY IN THE MORNING. MIXING HEIGHT.......2400 FT AGL DECREASING TO 1300 FT AGL EARLY IN THE MORNING...THEN INCREASING TO 2300 FT AGL LATE IN THE MORNING INCREASING TO 3100-3300 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTH 17 TO 18 MPH. DISPERSION INDEX....11 INCREASING TO 63. LVORI...............7 DECREASING TO 1. TIME (CDT) 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........38 38 38 38 38 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE TEMP..............44 50 59 63 64 RH................76 59 41 35 33 20 FT WIND DIR....N N N N N 20 FT WIND SPD....8 9 9 10 9 20 FT WIND GUST... MIX HGT (FT)......1300 2300 2300 3100 3300 MIX HGT (M).......400 700 700 940 1010 TRANSP WIND DIR...N N N N N TRANSP WIND SPD...17 18 18 17 18 TRANS SPD (M/S)...8 8 8 8 8 DISPERSION........28 50 50 56 63 LVORI.............3 1 1 1 1 CWR...............0 0 0 0 0 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....AROUND 39. MAX HUMIDITY........82 PERCENT. WIND (20 FT)........NORTH WINDS 7 TO 10 MPH DECREASING TO AROUND 6 MPH AFTER MIDNIGHT. MIXING HEIGHT.......3300 FT AGL DECREASING TO 300-400 FT AGL. MIXING WINDS........NORTH AROUND 18 MPH BECOMING NORTHWEST 7 TO 8 MPH. DISPERSION INDEX....63 DECREASING TO 6. LVORI...............1 INCREASING TO 4. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)...........38 23 23 23 23 23 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............60 54 49 46 43 41 RH................41 52 67 72 76 78 20 FT WIND DIR....N N N N N N 20 FT WIND SPD....9 7 6 6 5 5 20 FT WIND GUST... MIX HGT (FT)......3300 1200 400 400 400 200 MIX HGT (M).......1010 370 120 120 120 60 TRANSP WIND DIR...N N N N NW NW TRANSP WIND SPD...18 13 8 8 8 7 TRANS SPD (M/S)...8 6 4 4 4 3 DISPERSION........63 9 5 5 4 3 LVORI.............1 2 3 3 4 4 CWR...............0 0 0 0 0 0 .WEDNESDAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........23 PERCENT. WIND (20 FT)........NORTHWEST WINDS AROUND 6 MPH INCREASING TO AROUND 14 MPH. MIXING HEIGHT.......200-300 FT AGL INCREASING TO 5200 FT AGL. MIXING WINDS........NORTH 7 TO 8 MPH INCREASING TO NORTHWEST 17 TO 21 MPH IN THE LATE MORNING AND AFTERNOON. DISPERSION INDEX....6 INCREASING TO 53 LATE IN THE MORNING...THEN INCREASING TO 85 EARLY IN THE AFTERNOON DECREASING TO 61 LATE IN THE AFTERNOON. LVORI...............4 DECREASING TO 1. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........23 2 2 2 2 2 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE NONE TEMP..............39 43 56 62 64 65 RH................80 71 42 30 25 23 20 FT WIND DIR....N NW N N NW NW 20 FT WIND SPD....5 5 10 10 11 12 20 FT WIND GUST... MIX HGT (FT)......200 300 2800 2800 5200 5200 MIX HGT (M).......60 90 850 850 1580 1580 TRANSP WIND DIR...NW N N N NW NW TRANSP WIND SPD...7 8 17 17 21 20 TRANS SPD (M/S)...3 4 8 8 9 9 DISPERSION........3 8 53 53 85 61 LVORI.............4 3 1 1 1 1 CWR...............0 0 0 0 0 0 $$ FORECASTER...32 REQUESTED BY...DISPATCH TYPE OF REQUEST...PRESCRIBED .TAG 20130312.103S3.01/MOB