FNUS74 KLIX 142321 FWSLIX SPOT FORECAST FOR CPT O-10...U.S. FISH AND WILDLIFE SERVICE NATIONAL WEATHER SERVICE NEW ORLEANS LA 521 PM CST TUE FEB 14 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...WEAK HIGH PRESSURE WILL BE OVER THE REGION THROUGH TONIGHT. A COLD FRONT WILL APPROACH FROM THE WEST LATE WEDNESDAY...AND THEN MOVE THROUGH THE AREA WEDNESDAY NIGHT AND EARLY THURSDAY. AN AREA OF LOW PRESSURE IS FORECAST TO MOVE EAST ALONG THE COAST ON SATURDAY. 1 WHAT IS THE FOG POTENTIAL FOR WEDNESDAY NIGHT INTO THURSDAY MORNING IF FOG IS POSSIBLE, WHEN IS IT LIKELY TO OCCUR, WHAT IS THE EXPECTED AREAL COVERAGE AND DENSITY. IF RAIN DOES NOT OCCUR, HOW WILL THAT AFFECT THE FOG POTENTIAL. SURFACE HIGH OVER WEST TENNESSEE IS EXPECTED TO SLIDE EAST TOWARD THE EASTERN SEABOARD BY WEDNESDAY NIGHT. WINDS WILL QUICKLY BECOME EAST-SOUTHEAST AS EARLY AS WEDNESDAY MORNING. THE NEXT SURFACE LOW WILL DRAG A COLD FRONT ACROSS THE COASTAL MISSISSIPPI EARLY THURSDAY MORNING. DUE TO THE QUICK MOVEMENT OF THESE SYSTEMS...WINDS WILL REMAIN ABOVE 5 KNOTS WEDNESDAY NIGHT. MOISTURE WILL BE IN PLACE. HOWEVER...LIGHT WINDS AND OVERCAST SKY WILL IMPEDE DEVELOPMENT OF WIDESPREAD DENSE FOG. THEREFORE...PATCHY FOG CAN BE EXPECTED WEDNESDAY NIGHT...OCCASIONAL DENSE AT TIMES BUT NOT BE PREVAILING THROUGH THE NIGHT. 2 WHAT ARE THE CHANCES OF THE WIND GOING CALM DURING THE OVERNIGHT HOURS WEDNESDAY NIGHT/THURSDAY MORNING WINDS SHOULD NOT BECOME CALM AS THE THESE SYSTEM ARE MOVING QUICKLY FROM WEST TO EAST. 3 WHAT WILL BE THE MAXIMUM WIND GUST WE SHOULD EXPECT WEDNESDAY AND WHAT WILL BE THE TIME FRAME OF OCCURRENCE OCCASIONAL GUSTS UP TO 17 KNOTS MAY OCCUR 10 AM AND 5 PM WEDNESDAY. 4 WHAT ARE THE CHANCES OF LIGHTNING AFFECTING OUR OPERATIONS WEDNESDAY LIGHTNING MAY NO AFFECT YOUR OPERATIONS UNTIL WEDNESDAY NIGHT BUT AFTER MIDNIGHT INTO THURSDAY MORNING. THEREFORE...CHANCES ARE LOW LIGHTNING AFFECTING YOUR OPERATIONS WEDNESDAY AND WEDNESDAY EVENING. 5 ALLOWABLE WIND DIRECTIONS ARE W, SW, S, AND SE. WHAT ARE THE CHANCES OF WIND DIRECTION BEING OUTSIDE OF ALLOWABLE. ON WEDNESDAY...WINDS WILL VEER FROM EAST TO SOUTHEAST WEDNESDAY MORNING THROUGH EARLY THURSDAY MORNING. WITH WIND SUSTAINED SPEEDS REMAINING BETWEEN 7 TO 12 KNOTS FROM 9 AM WEDNESDAY THROUGH 4 AM THURSDAY...CHANCES ARE LOW FOR THE WIND DIRECTION OUTSIDE OF THIS RANGE. 6 WHAT TIME IS RAIN EXPECTED TO BEGIN, AND HOW MUCH RAIN IS EXPECTED BETTER RAIN CHANCES WILL OCCUR BETWEEN 12 AM THURSDAY AND 6 AM THURSDAY. RAINFALL AMOUNTS BETWEEN 0.5 AND 1 INCH CAN BE EXPECTED WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING. HOWEVER...RAIN CHANCES MAY OCCUR WEDNESDAY EVENING. .TONIGHT... TIME (CST) 6 PM 8 PM 10 PM MIDNIGHT 2 AM 4 AM SKY (%).........21 21 21 38 38 38 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............65 60 57 55 52 50 RH..............57 68 68 70 85 87 20 FT WIND......NW 2 N 2 NE 2 NE 2 NE 2 E 2 20 FT WIND GUST.5 5 5 5 5 5 MIX HGT (FT)....2300 2300 900 600 600 500 MIX HGT (M).....700 700 270 180 180 150 TRANSPORT WIND..NW 7 NE 7 NE 6 E 8 E 9 E 9 TRAN WIND (M/S).NW 3 NE 3 NE 3 E 4 E 4 E 4 DISPERSION......25 25 7 4 4 4 CHC OF PCPN (%).10 10 10 10 10 10 .WEDNESDAY... TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........73 73 73 73 73 73 71 71 71 71 71 71 WEATHER COV..... CHC CHC CHC CHC CHC CHC WEATHER TYPE.... TSM TSM TSM TSM TSM TSM TEMP............49 49 51 54 59 64 68 70 71 70 69 66 RH..............85 92 92 89 77 65 59 57 57 61 67 73 20 FT WIND DIR..E E E E E SE SE SE SE SE SE SE 20 FT WIND SPD..3 4 5 6 6 7 7 7 8 8 8 9 20 FT WIND GUST.5 5 10 10 10 15 15 15 15 15 15 20 MIX HGT (KFT)...0.3 0.3 0.3 0.8 0.8 0.8 1.5 1.5 1.5 1.1 1.1 1.1 MIX HGT (KM)....0.1 0.1 0.1 0.2 0.2 0.2 0.5 0.5 0.5 0.3 0.3 0.3 TRANSP WIND DIR.E E E SE SE SE SE SE SE SE SE SE TRANSP WIND SPD.7 7 7 10 10 10 13 13 13 13 13 13 TRANS SPD (M/S).3 3 3 4 4 4 6 6 6 6 6 6 DISPERSION......5 5 6 9 9 9 27 27 27 19 19 18 CHC OF PCPN (%).10 10 10 10 10 10 40 40 40 40 40 40 .WEDNESDAY NIGHT... TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM SKY (%).........93 93 93 93 93 93 99 99 99 99 99 99 WEATHER COV.....LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY WEATHER TYPE....TSM TSM TSM TSM TSM TSM TSM TSM TSM TSM TSM TSM TEMP............65 63 61 60 59 58 58 59 60 61 62 63 RH..............80 89 93 91 88 85 85 87 90 93 93 90 20 FT WIND DIR..SE SE SE SE SE S S S S S S S 20 FT WIND SPD..9 9 10 10 10 9 9 8 7 6 6 6 20 FT WIND GUST.20 20 20 20 20 20 20 15 15 10 10 10 MIX HGT (KFT)...0.7 0.7 0.7 0.7 0.7 0.7 1.0 1.0 1.0 0.9 0.9 0.9 MIX HGT (KM)....0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3 0.3 TRANSP WIND DIR.SE SE SE S S S S S S S S S TRANSP WIND SPD.13 13 13 15 15 15 17 17 17 14 14 14 TRANS SPD (M/S).6 6 6 7 7 7 8 8 8 6 6 6 DISPERSION......14 14 14 16 16 16 15 15 15 12 12 12 CHC OF PCPN (%).80 80 80 80 80 80 70 70 70 70 70 70 .FORECAST DAYS 3 THROUGH 5... .THURSDAY... MOSTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S. NORTHWEST WINDS AROUND 6 MPH. .FRIDAY... MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS AROUND 50. HIGHS IN THE UPPER 60S. NORTHEAST WINDS AROUND 7 MPH. .SATURDAY... CLOUDY WITH RAIN LIKELY. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. NORTHEAST WINDS AROUND 10 MPH. $$ FORECASTER...NWS NEW ORLEANS REQUESTED BY...SCOTT SAUCIER TYPE OF REQUEST...PRESCRIBED .TAG 20120214.CPTO1.01/LIX