000 AXNT20 KNHC 241059 RRA TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 805 AM EDT WED APR 24 2013 TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA... CENTRAL AMERICA...GULF OF MEXICO...CARIBBEAN SEA... NORTHERN SECTIONS OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL ANALYSIS. BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1015 UTC. ...THE ITCZ/THE MONSOON TROUGH... THE MONSOON TROUGH PASSES THROUGH COASTAL GUINEA NEAR 10N14W...TO 5N19W. THE ITCZ CONTINUES FROM 5N19W TO THE EQUATOR ALONG 23W...TO 1S28W...1N32W... CROSSING THE EQUATOR AGAIN ALONG 34W...TO 2S38W. CONVECTIVE PRECIPITATION...SCATTERED STRONG FROM 1N TO 6N BETWEEN 12W AND 20W...FROM 2N TO 5N BETWEEN 25W AND 28W...WITHIN 30 NM TO 60 NM OF THE BRAZIL COAST BETWEEN 36W AND 43W...AND IN THE ATLANTIC OCEAN TO THE SOUTH OF 10N BETWEEN 58W AND 60W. ...DISCUSSION... THE GULF OF MEXICO... A MIDDLE LEVEL TO UPPER LEVEL RIDGE EXTENDS FROM SOUTHERN GUATEMALA NEAR 15N91W TO 19N96W... BEYOND 29N97W IN SOUTH TEXAS. BROAD ANTICYCLONIC WIND FLOW COVERS THE GULF OF MEXICO. MIDDLE LEVEL TO UPPER LEVEL MOISTURE IS MOVING ACROSS MEXICO INTO THE GULF OF MEXICO...TO THE WEST OF THE LINE THAT RUNS FROM 30N86W 24N86W 23N91W 18N93W. A SURFACE RIDGE PASSES THROUGH 32N80W IN THE ATLANTIC OCEAN...TO 29N82W IN FLORIDA...TO 26N87W IN THE GULF OF MEXICO...TO 24N93W... AND TO 21N97W IN THE COASTAL PLAINS OF MEXICO. LOW CLOUD CEILINGS COVER THE TEXAS COASTAL PLAINS FROM THE DEEP SOUTH TO THE BEAUMONT/ PORT ARTHUR AREA...INTO LOUISIANA...AND MISSISSIPPI. A VISIBILITY OF ONE MILE WITH FOG IS BEING REPORTED AT THE AIRPORT IN GULF SHORES ALABAMA. THE NAVAL AIR STATION THAT IS NEAR MILTON FLORIDA IS REPORTING A VISIBILITY OF LESS THAN ONE MILE WITH FOG. CRESTVIEW FLORIDA ALSO IS REPORTING A VISIBILITY OF LESS THAN ONE MILE WITH FOG. FAIR SKIES AT OR BELOW 12000 FEET COVER THE REST OF FLORIDA. FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N TO THE WEST OF 88W... ICAO STATION KHQI IS REPORTING A VISIBILITY OF 1 MILE OR LESS WITH FOG. A LOW LEVEL CLOUD CEILING IS AT THE ICAO STATIONS KGVX...KGBK... AND KVBS. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2... AND THE OFFSHORE FORECAST...MIAOFFNT4...FOR MORE DETAILS ABOUT THE 12-HOUR FORECAST COLD FRONT 29N91W 25N97W. EXPECT 20 TO 25 KNOT NORTHEAST WINDS AND SEA HEIGHTS LOWER THAN 8 FEET TO THE SOUTH OF 28N TO THE WEST OF THE FRONT. THE CARIBBEAN SEA... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 17N51W IN THE ATLANTIC OCEAN...TO 15N56W...TO THE EAST OF THE EASTERN CARIBBEAN SEA ISLANDS. RAINSHOWERS ARE POSSIBLE TO THE SOUTH OF 17N BETWEEN 60W AND 70W. THE 24-HOUR RAINFALL TOTAL FOR GUADELOUPE...FOR THE TIME PERIOD ENDING AT 24/0000 UTC...IS 0.28 OF AN INCH...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND PRECIPITATION TABLE... MIATPTPAN. MIDDLE LEVEL TO UPPER LEVEL NORTHWESTERLY WIND FLOW MOVES FROM THE GULF OF MEXICO INTO AND ACROSS THE CARIBBEAN SEA. THE WIND FLOW REMAINS NORTHWESTERLY EVERYWHERE ELSE...AND IT EVENTUALLY MERGES WITH THE UPPER LEVEL WIND FLOW THAT HAS BEEN ORIGINATING IN SOUTH AMERICA. BROAD UPPER LEVEL SOUTHWESTERLY WIND FLOW THAT ORIGINATES IN SOUTH AMERICA...IS TO THE SOUTH OF 17N60W 15N70W 13N77W AND 12N80W. THE MONSOON TROUGH IS ALONG 5N75W IN COLOMBIA... BEYOND 4N84W IN THE EASTERN PACIFIC OCEAN. CONVECTIVE PRECIPITATION...SCATTERED STRONG FROM 5N TO 6N BETWEEN 74W AND 75W...AND FROM 5N TO 6N BETWEEN 77W AND 78W IN COLOMBIA AND AT THE COLOMBIA COAST. THE ATLANTIC OCEAN... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N71W TO 25N68W 23N64W AND TO 20N60W. THE TROUGH SUPPORTS A COLD FRONT THAT PASSES THROUGH 32N70W TO 28N72W AND 24N73W. A SURFACE TROUGH IS ALONG 24N74W...ACROSS THE BAHAMAS... TO CUBA NEAR 20N75W. CONVECTIVE PRECIPITATION... SCATTERED MODERATE TO STRONG FROM 23N TO 27N BETWEEN 66W AND 70W. RAINSHOWERS ARE POSSIBLE ELSEWHERE ALSO FROM 17N...ACROSS THE DOMINICAN REPUBLIC AND PUERTO RICO BEYOND 32N BETWEEN 60W AND 70W. A SURFACE RIDGE PASSES THROUGH 32N55W TO 24N56W TO 16N47W. A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N29W TO 25N32W 20N40W TO 17N51W... TO 15N56W. A COLD FRONT PASSES THROUGH 32N29W TO 27N35W AND 24N45W. THE SOUTHERN END OF A WARM FRONT REACHES 31N25W. CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO STRONG TO THE NORTH OF 30N BETWEEN 23W AND 26W. ISOLATED MODERATE ELSEWHERE TO THE NORTH OF 28N BETWEEN 23W AND 30W. RAINSHOWERS ARE POSSIBLE ALSO ELSEWHERE TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES THROUGH 32N23W 24N30W 18N40W 17N50W 18N60W 21N70W. PLEASE READ THE HIGH SEAS FORECAST... MIAHSFAT2...FOR MORE DETAILS ABOUT 20 TO 25 KNOT NORTH AND NORTHEAST WINDS AND 9 TO 11 FOOT SEA HEIGHTS TO THE NORTH OF 27N TO THE EAST OF 41W. EXPECT ALSO NORTH TO NORTHEAST WINDS 20 TO 25 KNOTS AND 9 TO 10 FOOT SEA HEIGHTS TO THE NORTH OF 27N BETWEEN 41W AND 48W. EXPECT ALSO WIND SPEEDS 20 KNOTS OR LESS AND SEA HEIGHTS REACHING 9 FEET ELSEWHERE TO THE NORTH OF 23N TO THE EAST OF 52W. A COLD FRONT IS ALONG 31N69W 24N71W. EXPECT WIND SPEEDS 20 KNOTS OR LESS AND SEA HEIGHTS REACHING 8 FEET TO THE NORTH OF 30N TO THE EAST OF THE FRONT TO 62W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT