FNUS74 KMOB 171231 FWSMOB SPOT FORECAST FOR 304C...E.N.R. NATIONAL WEATHER SERVICE MOBILE AL 731 AM CDT WED APR 17 2013 FORECAST IS BASED ON IGNITION TIME OF 0900 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 (65-75 PERCENT). PATCHY FOG EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 82. MIN HUMIDITY........59 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING EAST AROUND 9 MPH EARLY IN THE MORNING...THEN INCREASING TO SOUTHEAST IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......200 FT AGL INCREASING TO 700 FT AGL EARLY IN THE MORNING...THEN INCREASING TO 2900 FT AGL LATE IN THE MORNING INCREASING TO 4000 FT AGL EARLY IN THE AFTERNOON DECREASING TO 3700 FT AGL. MIXING WINDS........EAST AROUND 3 MPH INCREASING TO SOUTHEAST 12 TO 16 MPH. DISPERSION INDEX....10 INCREASING TO 38 IN THE LATE MORNING AND AFTERNOON. LVORI...............8 DECREASING TO 1. TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%)...........73 82 69 69 69 WEATHER COV....... WEATHER TYPE......NONE NONE NONE NONE NONE TEMP..............74 79 80 81 79 RH................76 65 62 59 61 20 FT WIND DIR....E SE SE SE SE 20 FT WIND SPD....8 11 12 12 11 20 FT WIND GUST... 21 21 21 20 MIX HGT (FT)......700 2900 4000 4000 3700 MIX HGT (M).......210 880 1220 1220 1130 TRANSP WIND DIR...E SE SE SE SE TRANSP WIND SPD...12 16 15 15 13 TRANS SPD (M/S)...5 7 7 7 6 DISPERSION........13 38 41 41 34 LVORI.............4 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 65. MAX HUMIDITY........92 PERCENT. WIND (20 FT)........SOUTH WINDS 10 TO 12 MPH SHIFTING TO THE SOUTHEAST 7 TO 9 MPH IN THE LATE EVENING AND OVERNIGHT. MIXING HEIGHT.......3700 FT AGL DECREASING TO 200 FT AGL. MIXING WINDS........SOUTH 10 TO 13 MPH SHIFTING TO THE SOUTHEAST 7 TO 8 MPH IN THE LATE EVENING AND OVERNIGHT. DISPERSION INDEX....34 DECREASING TO 8. LVORI...............1 INCREASING TO 6. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)...........69 57 57 57 45 45 WEATHER COV....... PATCHY PATCHY WEATHER TYPE......NONE NONE NONE NONE FOG FOG TEMP..............78 74 70 68 67 67 RH................64 73 83 87 90 92 20 FT WIND DIR....SE S SE SE SE SE 20 FT WIND SPD....11 9 7 7 6 8 20 FT WIND GUST...20 MIX HGT (FT)......3700 1100 500 500 400 200 MIX HGT (M).......1130 340 150 150 120 60 TRANSP WIND DIR...SE S SE SE SE SE TRANSP WIND SPD...13 10 8 8 7 7 TRANS SPD (M/S)...6 4 4 4 3 3 DISPERSION........34 9 7 7 6 6 LVORI.............1 3 4 4 5 6 CWR...............10 0 0 0 0 0 .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). PATCHY FOG EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 80. MIN HUMIDITY........67 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 9 TO 12 MPH INCREASING TO 13 TO 15 MPH IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......200 FT AGL INCREASING TO 1000 FT AGL EARLY IN THE MORNING...THEN INCREASING TO 3400 FT AGL LATE IN THE MORNING INCREASING TO 4200 FT AGL EARLY IN THE AFTERNOON DECREASING TO 2900 FT AGL. MIXING WINDS........SOUTHEAST AROUND 7 MPH INCREASING TO AROUND 17 MPH EARLY IN THE MORNING...THEN INCREASING TO SOUTH 21 TO 23 MPH IN THE LATE MORNING AND EARLY AFTERNOON DECREASING TO AROUND 17 MPH LATE IN THE AFTERNOON. DISPERSION INDEX....6 INCREASING TO 23 EARLY IN THE MORNING...THEN INCREASING TO 59 IN THE LATE MORNING AND EARLY AFTERNOON DECREASING TO 40 LATE IN THE AFTERNOON. LVORI...............6 DECREASING TO 4 EARLY IN THE MORNING...THEN DECREASING TO 3 LATE IN THE MORNING DECREASING TO 1 EARLY IN THE AFTERNOON INCREASING TO 3. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%)...........45 61 61 61 51 51 WEATHER COV.......PATCHY WEATHER TYPE......FOG NONE NONE NONE NONE NONE TEMP..............67 70 75 78 79 78 RH................92 86 73 68 68 71 20 FT WIND DIR....SE SE SE SE SE SE 20 FT WIND SPD....8 11 12 12 14 11 20 FT WIND GUST... 20 21 21 21 18 MIX HGT (FT)......200 1000 3400 3400 4200 2900 MIX HGT (M).......60 300 1040 1040 1280 880 TRANSP WIND DIR...SE SE SE SE S S TRANSP WIND SPD...7 17 23 23 21 17 TRANS SPD (M/S)...3 8 10 10 9 8 DISPERSION........6 23 58 58 59 40 LVORI.............6 4 3 3 1 3 CWR...............0 10 10 10 20 20 $$ FORECASTER...32 REQUESTED BY...DISPATCH TYPE OF REQUEST...PRESCRIBED .TAG 20130417.304C_.01/MOB