FNUS74 KLIX 211542 FWSLIX SPOT FORECAST FOR CPT O-17...U.S. FISH AND WILDLIFE SERVICE NATIONAL WEATHER SERVICE NEW ORLEANS LA 1042 AM CDT TUE APR 21 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...WEAK HIGH PRESSURE OVER THE WESTERN GULF OF MEXICO WILL SLOWLY SLIDE EAST OVER THE CENTRAL GULF OF MEXICO THROUGH TONIGHT. A WEAK COLD FRONT WILL SLOWLY PUSH INTO COASTAL SOUTHERN MISSISSIPPI TONIGHT CAUSING WINDS TO GO LIGHT AND VARIABLE IF NOT CALM DURING THE EARLY MORNING HOURS. THE SURFACE HIGH OVER THE CENTRAL GULF WILL EVENTUALLY SLIDE OVER THE EASTERN GULF OF MEXICO WEDNESDAY NIGHT WITH SOUTHWESTERLY FLOW RETURNING LATE TOMORROW AFTERNOON AND SOUTHERLY FLOW TAKING HOLD FROM WEDNESDAY NIGHT THROUGH MONDAY. PATCHY FOG IS POSSIBLE TONIGHT BUT WE ARE NOT EXPECTING SIGNIFICANT ISSUES. .TODAY... TIME (CDT) 10 AM NOON 2 PM 4 PM SKY (%).........34 34 44 36 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............66 73 74 75 RH..............40 36 34 34 20 FT WIND......W 6 WSW 7 WSW 7 WSW 6 20 FT WIND GUST.10 15 15 10 MIX HGT (FT-AGL)6100 6100 8300 6200 MIX HGT (M-AGL).1860 1860 2530 1890 TRAN WIND (MPH).W 24 W 24 W 26 W 26 TRAN WIND (M/S).W 11 W 11 W 12 W 12 CHC OF PCPN (%).0 0 0 0 .TONIGHT... TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........36 27 20 20 12 9 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............73 66 60 58 56 55 RH..............55 73 84 86 90 93 20 FT WIND......W 5 NW 4 N 2 VRB VRB VRB 20 FT WIND GUST.10 5 5 MIX HGT (FT-AGL)6200 2800 400 400 400 500 MIX HGT (M-AGL).1890 850 120 120 120 150 TRAN WIND (MPH).W 26 NW 25 NW 18 NW 18 NW 13 W 13 TRAN WIND (M/S).W 12 NW 11 NW 8 NW 8 NW 6 W 6 CHC OF PCPN (%).0 0 0 0 0 0 .WEDNESDAY... TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........9 5 12 12 5 12 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............54 59 68 75 77 77 RH..............90 75 57 48 48 52 20 FT WIND......S 1 S 2 S 3 SW 5 SW 5 SW 6 20 FT WIND GUST. 5 5 10 10 10 MIX HGT (FT-AGL)500 2300 4900 4900 7200 6900 MIX HGT (M-AGL).150 700 1490 1490 2190 2100 TRAN WIND (MPH).W 13 W 15 W 15 W 15 W 15 W 16 TRAN WIND (M/S).W 6 W 7 W 7 W 7 W 7 W 7 CHC OF PCPN (%).0 0 0 0 0 0 .REMARKS...DRIER AIR AND WARMER TEMPS WILL LEAD TO LOWER RH VALUES TODAY BUT WE SHOULD REMAIN ABOVE 30% THROUGHOUT THE DAY. AS FOR FOG TONIGHT...WITH THE APPROACH OF WEAK FRONT WINDS SHOW GO AT LEAST LIGHT AND VARIABLE IF NOT CALM AFTER MIDNIGHT. THIS ALONG WITH LOWS DROPPING TO NEAR 50 AND SMOKE PARTICULATES IN THE AIR SHOULD ALLOW PATCHY LIGHT FOG BUT AGAIN WE ARE NOT EXPECTING MUCH WORSE THAN 3-5 SM. AS MENTIONED ALREADY THERE IS A VERY GOOD CHANCE THAT THE WINDS WILL GO CALM BUT IT WILL AT LEAST DROP TO LIGHT AND VARIABLE. MAX RH VALUES SHOULD RECOVER PRETTY GOOD TOPPING OUT JUST UNDER 95%. YOUR WINDS SHOULD NEVER BE OUTSIDE OF YOUR ALLOWABLE RANGE THROUGH TODAY AND THIS EVENING BUT SURFACE WINDS WILL BECOME MORE NORTHERLY AFTER MIDNIGHT BECOMING MORE NORTHEASTERLY DURING THE EARLY MORNING HOURS...THAT SAID WINDS WILL BE RATHER LIGHT AND LIKELY SHOW MORE OF A CHAOTIC DIRECTION. SHORTLY AFTER SUNRISE THE SURFACE WINDS WILL PICK UP AND BE OUT OF THE EAST. TRANSPORT WINDS WILL REMAIN OUT OF THE WEST TO NORTHWEST THROUGHOUT THIS TIME FRAME. AS FOR A SEABREEZE TODAY THERE REALLY SHOULDN'T BE MUCH OF A CONCERN WITH THIS. WINDS WILL JUST HAVE TOO MUCH OF A WESTERLY COMPONENT TODAY AND AT BEST A SOUTHWEST SURFACE WIND MAY DEVELOP. ALSO WINDS JUST OFF THE DECK WILL BE OUT OF THE WEST AND NORTHWEST AND THIS WILL HURT ANY CHANCE OF GETTING SEABREEZE. $$ FORECASTER...BANNAN REQUESTED BY...SAMI GRAY TYPE OF REQUEST...PRESCRIBED .TAG 20090421.CPTO1.01/LIX