FNUS74 KMOB 232020 FWSMOB SPOT FORECAST FOR DE SOTO 0921...USDA FOREST SERVICE NATIONAL WEATHER SERVICE MOBILE AL...UPDATED TO ADD FOG TO DISCUSSION 306 PM CDT THU APR 23 2009 FORECAST IS BASED ON IGNITION TIME OF 1515 CDT ON APRIL 23. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE WILL CONTINUE TO RIDGE INTO THE SOUTHEASTERN UNITED STATES AND OVER THE NORTHEASTERN GULF OF MEXICO THROUGH THE WEEKEND. THIS WILL RESULT IN A GRADUALLY MOISTENING AIRMASS OVER THE REGION BY THE WEEKEND. DRY AIR IN THE MID LEVELS OF THE ATMOSPHERE WILL REMAIN OVER THE REGION THROUGH FRIDAY AND WITH DAYTIME HEATING AND A SLIGHT MIXING PROCESS...AFTERNOON RELATIVE HUMIDITY VALUES WILL AGAIN FALL INTO THE LOWER 40S ACROSS THE ENTIRE AREA...AND MAY AGAIN FALL INTO THE MID 30S ONCE AGAIN ACROSS INLAND PORTIONS OF SOUTHEAST MISSISSIPPI. AS WAS THE CASE THIS MORNING... SOME PATCHY FOG WILL AGAIN BE POSSBILE AFTER MIDNIGHT TONIGHT AND EARLY FRIDAY MORNING. IN MOST LOCATIONS THE FOG IS EXPECTED TO BE LIGHT...BUT ISOLATED PATCHES OF DENSE FOG WILL BE POSSIBLE AS WELL. ANY FOG THAT DOES DEVELOP LATE TONIGHT WILL DISSIPATE BY AROUND 9 AM FRIDAY. .TONIGHT... TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........7 21 21 21 21 21 WEATHER COV..... PATCHY PATCHY WEATHER TYPE....NONE NONE NONE NONE FOG FOG TEMP............82 74 66 63 61 59 RH..............43 61 82 92 97 100 20 FT WIND DIR..S S S S S S 20 FT WIND SPD..6 4 3 3 5 5 MIX HGT (FT)....4300 2000 1300 600 200 200 MIX HGT (M).....1310 610 400 180 60 60 TRANSP WIND DIR.S S S S S S TRANSP WIND SPD.10 7 5 5 7 8 TRANS SPD (M/S).4 3 2 2 3 4 DISPERSION......53 3 2 2 3 4 LVORI...........1 3 5 6 9 9 CWR.............0 0 0 0 0 0 .FRIDAY... TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........21 13 13 13 13 13 WEATHER COV.....PATCHY PATCHY WEATHER TYPE....FOG FOG NONE NONE NONE NONE TEMP............59 64 78 83 85 85 RH..............100 87 58 46 43 43 20 FT WIND DIR..SE SE S S S S 20 FT WIND SPD..5 6 9 12 12 10 MIX HGT (FT)....200 1200 3400 5600 6200 5100 MIX HGT (M).....60 370 1040 1710 1890 1550 TRANSP WIND DIR.SE SE S S S S TRANSP WIND SPD.8 10 15 18 20 17 TRANS SPD (M/S).4 4 7 8 9 8 DISPERSION......3 16 52 61 64 70 LVORI...........9 4 1 1 1 1 CWR.............0 10 10 10 10 10 $$ FORECASTER...MOB FORECASTER REQUESTED BY...BUZZ WILLIAMS TYPE OF REQUEST...PRESCRIBED .TAG 20090423.DESOT.02/MOB