000 AXNT20 KNHC 250605 RRA TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 205 AM EDT THU APR 25 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0515 UTC. ...THE ITCZ/THE MONSOON TROUGH... THE MONSOON TROUGH PASSES THROUGH COASTAL SIERRA LEONE NEAR 7N12W...TO THE EQUATOR ALONG 16W. THE ITCZ CONTINUES FROM THE EQUATOR ALONG 16W TO 3S20W 4S30W...INTO COASTAL NORTHEASTERN BRAZIL NEAR 5S37W...TO 6S43W AND 5S49W. CONVECTIVE PRECIPITATION...NUMEROUS STRONG TO THE SOUTH OF 3N BETWEEN 7W AND 13W...AND FROM 4N TO 5N BETWEEN 19W AND 20W. SCATTERED STRONG TO THE SOUTH OF 2N TO THE EAST OF 6W. SCATTERED MODERATE TO ISOLATED STRONG TO THE SOUTH OF 3N BETWEEN 20W AND 24W... AND TO THE SOUTH OF 10N BETWEEN 46W AND 60W. ...DISCUSSION... THE GULF OF MEXICO... A MIDDLE LEVEL TO UPPER LEVEL RIDGE EXTENDS FROM 14N95W IN THE EASTERN PACIFIC OCEAN...INTO MEXICO NEAR 22N99W...BEYOND THE TEXAS BIG BEND. BROAD ANTICYCLONIC WIND FLOW COVERS MEXICO...THE GULF OF MEXICO...AND CENTRAL AMERICA FROM NICARAGUA NORTHWARD. MIDDLE LEVEL TO UPPER LEVEL MOISTURE IS TO THE SOUTH OF 27N. A COLD FRONT PASSES THROUGH SOUTHEASTERN LOUISIANA TO 26N93W IN THE GULF OF MEXICO. A STATIONARY FRONT CONTINUES FROM 26N93W TO 22N96W 21N98W AND 24N101W. A DISSIPATING STATIONARY FRONT CONTINUES IN MEXICO FROM 24N101W TOWARD THE WESTERN PART OF THE TEXAS BIG BEND. THE MIDDLE LEVEL TO UPPER LEVEL TROUGH THAT IS ASSOCIATED WITH THIS FEATURE IS INLAND TO THE NORTH OF THE GULF OF MEXICO. A SURFACE RIDGE EXTENDS FROM A 1022 MB ATLANTIC OCEAN HIGH PRESSURE CENTER THAT IS NEAR 32N75W... CROSSING FLORIDA NEAR 29N82W...INTO THE GULF OF MEXICO NEAR 25N88W. LOW CLOUD CEILINGS COVER THE TEXAS COASTAL PLAINS FROM THE DEEP SOUTH TO THE HOUSTON METROPOLITAN AREA. MIDDLE LEVEL CLOUD CEILINGS COVER THE TEXAS COASTAL PLAINS FROM THE HOUSTON METROPOLITAN AREA NORTHEASTWARD. LOW CLOUD CEILINGS AND MIDDLE LEVEL CLOUD CEILINGS COVER THE COASTAL PLAINS OF LOUISIANA. LOW CLOUD CEILINGS COVER COASTAL MISSISSIPPI AND COASTAL ALABAMA. LOW CLOUD CEILINGS AND VISIBILITIES OF ONE MILE OR LESS WITH FOG COVER PARTS OF COASTAL ALABAMA LEADING INTO THE FLORIDA PANHANDLE. THE LOW CLOUD CEILINGS STOP TO THE EAST OF PANAMA CITY BEACH IN FLORIDA. THE TAMPA METROPOLITAN AREA HAS SOME HIGH CLOUD CEILING AT THE TAMPA INTERNATIONAL AIRPORT. A LOW CLOUD CEILING IS BEING REPORTED IN NAPLES FLORIDA. FAIR SKIES AT OR BELOW 12000 FEET COVER THE REST OF THE FLORIDA COASTAL PLAINS. FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N TO THE WEST OF 88W... ICAO STATION KATP IS REPORTING A VISIBILITY OF 2 MILES WITH FOG. A LOW LEVEL CLOUD CEILING IS AT THE ICAO STATIONS KGVX...KGUL... KHQI...KEIR...AND KSPR. ICAO STATION KGBK IS REPORTING A CLOUD CEILING AT 9000 FEET. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2... AND THE OFFSHORE FORECAST...MIAOFFNT4...FOR MORE DETAILS ABOUT THE 30N89W 27N94W 21N97W COLD FRONT/ STATIONARY FRONT. EXPECT 20 TO 30 KNOT NORTH TO NORTHEAST WINDS AND SEA HEIGHTS REACHING 8 FEET TO THE SOUTH OF 27N TO THE WEST OF THE FRONT. THE CARIBBEAN SEA... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH THE ATLANTIC OCEAN NEAR 32N66W TO 25N65W TO 23N62W AND 18N62W IN THE CARIBBEAN SEA... TO 14N64W AND 13N66W. RAINSHOWERS ARE POSSIBLE TO THE EAST OF 70W. 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 32N66W 18N62W 13N66W TROUGH...AND 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. CLUSTERS OF STRONG CONVECTIVE PRECIPITATION ARE IN COLOMBIA TO THE NORTH OF 4N...RELATED TO THE MONSOON TROUGH. THE ATLANTIC OCEAN... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N66W TO 25N65W TO 23N62W AND 18N62W. THE TROUGH SUPPORTS A DISSIPATING STATIONARY FRONT THAT PASSES THROUGH 32N68W TO 28N70W AND 26N72W. A SEPARATE SURFACE TROUGH IS ALONG 26N69W...24N70W AND 21N71W. CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG IS TO THE NORTH OF 20N BETWEEN 59W AND 67W. ONE SURFACE RIDGE EXTENDS FROM A 1022 MB ATLANTIC OCEAN HIGH PRESSURE CENTER THAT IS NEAR 32N75W...CROSSING FLORIDA NEAR 29N82W...INTO THE GULF OF MEXICO NEAR 25N88W. A SECOND SURFACE RIDGE PASSES THROUGH 32N52W TO 23N53W TO 13N41W. A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM A 34N32W CYCLONIC CIRCULATION CENTER... TO 20N47W...TO 18N54W. A 997 MB GALE CENTER IS NEAR 35N35W. A COLD FRONT EVENTUALLY PASSES THROUGH 32N26W TO 27N30W AND 24N36W. ANY SIGNIFICANT DEEP CONVECTIVE PRECIPITATION IS TO THE NORTH OF THE AREA. RAINSHOWERS ARE POSSIBLE ALSO ELSEWHERE TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES THROUGH 32N23W 24N28W 19N40W 18N48W 16N50W 20N66W. PLEASE READ THE HIGH SEAS FORECAST... MIAHSFAT2...FOR MORE DETAILS ABOUT THE NORTHWEST TO NORTH GALE-FORCE WINDS...TO THE NORTH OF 29N TO THE EAST OF 29N38W 31N40W. SEA HEIGHTS WILL RANGE FROM 21 TO 25 FEET. A DISSIPATING STATIONARY FRONT IS ALONG 21N35W 20N40W. EXPECT ALSO NORTHWEST TO NORTH WINDS 20 TO 30 KNOTS AND 13 TO 20 FOOT SEA HEIGHTS TO THE NORTHEAST OF 31N48W 27N44W 26N40W 27N35W. EXPECT ALSO WINDS 20 KNOT OR LESS AND 8 TO 12 FOOT SEA HEIGHTS TO THE NORTHEAST OF 31N59W 28N57W 24N50W 24N40W 25N35W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT