FNUS74 KLIX 261241 FWSLIX SPOT FORECAST FOR CPT O-19...U.S. FWS NATIONAL WEATHER SERVICE NEW ORLEANS LA 741 AM CDT MON APR 26 2010 FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON APRIL 26. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A WEAK FRONT HAS PUSHED THROUGH THE AREA OVERNIGHT. WINDS WILL REMAIN FAIRLY CONSISTENT BETWEEN WNW AND WEST BUT LIKELY INCREASE INTO THE 10-15 MPH RANGE. LOWER TD/S AND HIGHS IN THE LOW 80S WILL RESULT IN MIN RH/S UPPER 20S TO LOWER 30S. ANOTHER WEAK FRONT WILL SLIDE THROUGH THE AREA TUESDAY BUT RAIN POTENTIAL IS EXPECTED TO BE QUITE LOW. HIGH PRESSURE BEHIND THAT FRONT WITH QUICKLY TRACK TOWARDS THE WESTERN ATLANTIC WHICH WILL BRING ONSHORE FLOW OF MOISTURE TO THE AREA BEGINNING WEDNESDAY NIGHT. THIS SETUP WILL PERSIST THROUGH MUCH OF THE WEEKEND...SO SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE. .REMARKS... 1. FOG POTENTIAL IS FAIRLY LOW BUT POSSIBLE. SHOULD BE AT LEAST A FEW DEGREE SPREAD IN T/TD OVERNIGHT. WOULD BE MORE SURPRISED TO SEE FOG THAN NOT. 2. MODERATE TO HIGH PROBABILITY OF WINDS BECOMING CALM OVERNIGHT. 3. CURRENT FORECAST HAS MIN RH OF OF AROUND 35 PCT. IT IS PLAUSIBLE FOR RH TO DROP BELOW 28 PCT IF TEMPS RISE AND TD/S FALL A FEW DEGREES FROM FORECAST. 4. SUBSIDENCE IS EXPECTED BEHIND THE FRONT THAT MOVED THROUGH THE AREA LAST NIGHT. NOT EXCEPTED TO BE TERRIBLY STRONG THOUGH AS THE RIDGE IS FAIRLY WEAK AND LOCATED OVER THE WESTERN GULF. THIS COULD DROP TD/S SLIGHTLY MORE THAT FORECAST. 5. WINDS SHOULD NOT BE AFFECTED TOO MUCH BY SEABREEZE AS WINDS ARE MOSTLY SYNOPTIC DRIVEN TODAY. .TODAY... SKY/WEATHER.........SUNNY (0-10 PERCENT). TEMPERATURE.........67 AT IGNITION...MAX 81. MIN HUMIDITY........59 PERCENT AT IGNITION...MIN 35 PERCENT. CHANCE OF PCPN......0 PERCENT. MIXING HEIGHT.......600 FT AGL AT IGNITION...OTHERWISE 400-600 FT AGL INCREASING TO 5600-7200 FT AGL IN THE LATE MORNING AND AFTERNOON. MIXING WINDS........NORTHWEST 10 TO 12 MPH INCREASING TO 21 TO 24 MPH IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........WINDS WEST AT 7 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING WEST 6 TO 12 MPH EARLY IN THE MORNING. TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........0 6 6 6 13 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............67 75 80 81 80 RH..............59 45 36 37 39 20 FT WIND......WNW 6 WNW 8 W 9 W 8 W 6 20 FT WIND GUST.10 15 15 15 10 MIX HGT (FT-AGL)600 5600 6100 6100 7200 MIX HGT (M-AGL).180 1710 1860 1860 2190 TRAN WIND (MPH).NW 10 NW 22 W 21 W 21 NW 24 TRAN WIND (M/S).NW 4 NW 10 W 9 W 9 NW 11 CHC OF PCPN (%).0 0 0 0 0 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING MOSTLY CLOUDY (65-75 PERCENT). MIN TEMPERATURE.....56. MAX HUMIDITY........83 PERCENT. CHANCE OF PCPN......10 PERCENT. MIXING HEIGHT.......7200 FT AGL DECREASING TO 500-2100 FT AGL. MIXING WINDS........NORTHWEST 18 TO 24 MPH BECOMING NORTH 8 TO 9 MPH IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........WEST WINDS 5 TO 8 MPH EARLY IN THE EVENING BECOMING LIGHT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........13 15 26 26 48 71 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............78 72 65 63 60 58 RH..............42 53 68 72 81 83 20 FT WIND......W 6 W 5 W 3 W 2 W 1 W 1 20 FT WIND GUST.10 10 5 5 MIX HGT (FT-AGL)7200 2100 500 500 500 500 MIX HGT (M-AGL).2190 640 150 150 150 150 TRAN WIND (MPH).NW 24 NW 18 NW 9 NW 9 N 9 N 8 TRAN WIND (M/S).NW 11 NW 8 NW 4 NW 4 N 4 N 4 CHC OF PCPN (%).0 10 10 10 10 10 .TUESDAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....75. MIN HUMIDITY........38 PERCENT. CHANCE OF PCPN......20 PERCENT. MIXING HEIGHT.......500 FT AGL INCREASING TO 4600-4800 FT AGL IN THE LATE MORNING AND AFTERNOON. MIXING WINDS........NORTHWEST 6 TO 15 MPH SHIFTING TO THE WEST AROUND 8 MPH LATE IN THE AFTERNOON. WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 12 MPH IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........71 75 68 68 59 43 WEATHER COV..... S CHC S CHC S CHC WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR NONE NONE TEMP............57 60 68 72 74 74 RH..............83 69 51 42 40 40 20 FT WIND......NW 1 NW 3 NW 5 NW 8 NW 9 NW 9 20 FT WIND GUST. 5 10 15 15 15 MIX HGT (FT-AGL)500 500 4600 4600 4800 4600 MIX HGT (M-AGL).150 150 1400 1400 1460 1400 TRAN WIND (MPH).N 8 NE 6 N 15 N 15 NW 6 W 8 TRAN WIND (M/S).N 4 NE 3 N 7 N 7 NW 3 W 4 CHC OF PCPN (%).10 20 20 20 10 10 $$ FORECASTER...MIKE EFFERSON REQUESTED BY...SAMI GRAY TYPE OF REQUEST...PRESCRIBED .TAG 20100426.CPTO1.01/LIX