FNUS74 KLIX 272223 FWSLIX SPOT FORECAST FOR DEEPWATER HORIZON...NWS NATIONAL WEATHER SERVICE NEW ORLEANS LA 523 PM CDT TUE APR 27 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A COLD FRONT PASSED THROUGH THE COASTAL WATERS THIS MORNING. NORTHWEST TO NORTH WINDS IN THE WAKE OF THE FRONT WILL CONTINUE AT 15-20KTS THIS EVENING THROUGH MIDNIGHT BEFORE DIMINISHING TOWARDS DAYBREAK. SEAS WILL ALSO BUILD TO 3-4 FEET TONIGHT. SURFACE HIGH PRESSURE WILL QUICKLY TRACK ACROSS THE AREA WEDNESDAY WHICH WILL SUPPRESS WINDS AND FLATTEN SEAS. AS THIS RIDGE CONTINUES EASTWARD WEDNESDAY NIGHT, WINDS WILL THEN SHIFT BACK TO THE SOUTHEAST. THIS HIGH WILL SETTLE IN THE WESTERN ATLANTIC THROUGH THE WEEKEND. MEANWHILE, A SERIES OF SURFACE LOWS WILL DEVELOP AND MOVE THROUGH THE SOUTHERN PLAINS. THE RESULTING WINDS BETWEEN THESE 2 FEATURES, SPOT AREA, WILL BE STRONG PERSISTENT SOUTHEAST WINDS OF AT LEAST 20KTS FROM THURSDAY NIGHT THROUGH SATURDAY NIGHT. IN ADDITION, EXPECT SEAS TO BUILD TO A PEAK OF 8-11 FEET DURING THIS PERIOD. ALTHOUGH A FRONT IS EXPECTED TO APPROACH THE COASTAL WATERS LATE THIS WEEKEND, AT THIS TIME IT DOES NOT APPEAR THAT IT WILL PUSH THROUGH UNTIL POSSIBLY EARLY TO MIDDLE OF NEXT WEEK. THUS, SOUTH WINDS WILL CONTINUE INTO EARLY NEXT WEEK. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). MIN TEMPERATURE.....AROUND 58. MAX HUMIDITY........80 PERCENT. CHANCE OF PCPN......10 PERCENT. MIXING HEIGHT.......3400 EARLY DECREASING TO 2600 FT AGL. MIXING WINDS........NORTHWEST AROUND 18 MPH. WIND (20 FT)........NORTHWEST WINDS 13 TO 16 MPH. SEA STATE...........CHOPPY. AVERAGE PRESSURE....1016. SEAS................3 FEET. RAINFALL AMOUNT.....0.00 INCHES. .WEDNESDAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 71. MIN HUMIDITY........46 PERCENT. CHANCE OF PCPN......0 PERCENT. MIXING HEIGHT.......2600 TO 2800 FT AGL DECREASING TO 2400 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........NORTHEAST AROUND 10 MPH. WIND (20 FT)........NORTHEAST WINDS 5 TO 12 MPH. SEA STATE...........LIGHT CHOP. AVERAGE PRESSURE....1018. SEAS................1 TO 3 FEET. RAINFALL AMOUNT.....0.00 INCHES. .WEDNESDAY NIGHT... SKY/WEATHER.........CLEAR (0-10 PERCENT). MIN TEMPERATURE.....AROUND 62. MAX HUMIDITY........87 PERCENT. CHANCE OF PCPN......0 PERCENT. MIXING HEIGHT.......2400 EARLY FALLING TO 1900 FT AGL BEFORE SUNRISE. MIXING WINDS........SOUTHEAST AROUND 7 MPH. WIND (20 FT)........SOUTHEAST WINDS 5 TO 9 MPH. SEA STATE...........LIGHT CHOP. AVERAGE PRESSURE....1017. SEAS................2 FEET OR LESS. RAINFALL AMOUNT.....0.00 INCHES. .THURSDAY... SKY/WEATHER.........CLEAR EARLY THEN BECOMING PARTLY CLOUDY. MAX TEMPERATURE.....AROUND 75. MIN HUMIDITY........60 PERCENT. CHANCE OF PCPN......10 PERCENT. MIXING HEIGHT.......1900 TO 2400 FT AGL. MIXING WINDS........SOUTHEAST AROUND 20 TO 25 MPH. WIND (20 FT)........SOUTHEAST WINDS 15 TO 20 MPH. SEA STATE...........ROUGH. AVERAGE PRESSURE....1015. SEAS................2 FEET OR LESS. RAINFALL AMOUNT.....0.00 INCHES. .THURSDAY NIGHT... SKY/WEATHER.........MOSTLY CLOUDY (50-65 PERCENT). MIN TEMPERATURE.....AROUND 69. MAX HUMIDITY........95 PERCENT. CHANCE OF PCPN......10 PERCENT. MIXING HEIGHT.......2200 FT AGL IN THE EVENING FALLING TO 1600 FT AGL BEFORE SUNRISE. MIXING WINDS........SOUTHEAST AROUND 25 TO 35 MPH. WIND (20 FT)........SOUTHEAST WINDS 18 TO 23 MPH. SEA STATE...........ROUGH. AVERAGE PRESSURE....1013. SEAS................2 FEET OR LESS. RAINFALL AMOUNT.....0.00 INCHES. && FORECAST FOR THE COASTAL WATERS FROM PASCAGOULA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER ...SMALL CRAFT EXERCISE CAUTION IN EFFECT TONIGHT... .TONIGHT...NORTHWEST WINDS 15 TO 20 KNOTS BECOMING NORTH AROUND 15 KNOTS AFTER 3 AM. SEAS 3 TO 4 FEET. .WEDNESDAY...NORTHEAST WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST LATE IN THE AFTERNOON. SEAS 2 FEET OR LESS. .WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 2 FEET. .THURSDAY...SOUTHEAST WINDS RISING TO 15 TO 20 KNOTS. SEAS 2 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE AFTERNOON. .THURSDAY NIGHT...SOUTHEAST WINDS AROUND 20 KNOTS. SEAS 6 TO 7 FEET. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. .FRIDAY...SOUTHEAST WINDS 20 TO 25 KNOTS. SEAS 7 TO 9 FEET. CHANCE OF SHOWERS AND THUNDERSTORMS. .FRIDAY NIGHT...SOUTHEAST WINDS 20 TO 25 KNOTS. SEAS 8 TO 10 FEET. CHANCE OF SHOWERS AND THUNDERSTORMS. .SATURDAY...SOUTHEAST WINDS 20 TO 25 KNOTS. SEAS 9 TO 11 FEET. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. .SATURDAY NIGHT...SOUTHEAST WINDS AROUND 20 KNOTS. SEAS 8 TO 10 FEET. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. .SUNDAY...SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 7 TO 9 FEET. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. .SUNDAY NIGHT...SOUTHEAST WINDS EASING TO 10 TO 15 KNOTS. 6 TO 8 FEET. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. HAZARDOUS WEATHER OUTLOOK .DAY ONE...TODAY AND TONIGHT NORTHWEST WINDS OF 15 TO 20 KNOTS WILL PERSIST TONIGHT. SMALL CRAFT SHOULD EXERCISE CAUTION. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS... SCATTERED THUNDERSTORMS WILL BE POSSIBLE EACH DAY FROM FRIDAY THROUGH MONDAY. ALTHOUGH A FEW STORMS MAY BE STRONG...ORGANIZED SEVERE THUNDERSTORM DEVELOPMENT IS NOT EXPECTED. COASTAL FLOODING... A PERSISTENT MODERATE TO STRONG ONSHORE FLOW IS EXPECTED TO DEVELOP THURSDAY AND CONTINUE UNTIL THE MIDDLE OF NEXT WEEK. ADDITIONALLY... THE ASTRONOMICAL TIDE CYCLE WILL BE AT LARGE SPRING TIDE RANGES THIS WEEKEND. THESE CONDITIONS WILL COMBINE TO PRODUCE UNUSUALLY HIGH WATER LEVELS THAT WILL RESULT IN THE POTENTIAL FOR COASTAL FLOODING OUTSIDE THE HURRICANE PROTECTION LEVEE SYSTEMS. MARINE... SMALL CRAFT ADVISORY CONDITIONS ARE LIKELY FOR THE GULF COASTAL WATERS FROM LATE THURSDAY THROUGH SUNDAY AS A RESULT OF STRONG ONSHORE WINDS AND BUILDING SEAS DUE TO WAVES AND SWELLS. $$ FORECASTER...NWS NEW ORLEANS TYPE OF REQUEST...HAZMAT .TAG 20100427.DEEPW.01/LIX