000 AXNT20 KNHC 300605 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 205 AM EDT TUE APR 30 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 GUINEA- BISSAU NEAR 12N16W TO 8N17W AND 4N22W. THE ITCZ CONTINUES FROM 4N22W TO 1N31W AND 1N35W...CROSSING THE EQUATOR ALONG 40W...TO 1N47W AND INTO NORTH- EASTERN BRAZIL NEAR 1N51W. CONVECTIVE PRECIPITATION... WIDELY SCATTERED TO SCATTERED MODERATE AND ISOLATED STRONG TO THE SOUTH OF 2N ALONG THE PRIME MERIDIAN... 2N6W 6N11W 5N20W 4N34W 7N41W 9N53W 10N60W. ...DISCUSSION... THE GULF OF MEXICO... THE MIDDLE LEVEL TO UPPER LEVEL WIND FLOW SITUATION HAS BECOME COMPARATIVELY MORE DEVELOPED THAN IT WAS 24 HOURS AGO. A SHORTWAVE TROUGH HAS BEEN REPLACED BY A CYCLONIC CIRCULATION CENTER IN CENTRAL TEXAS. SCATTERED MODERATE TO ISOLATED STRONG CONVECTIVE PRECIPITATION COVERS TEXAS AND ITS COASTAL WATERS FROM 27N TO 30N BETWEEN 94W AND 99W. SIMILAR STYLE PRECIPITATION IS JUST TO THE SOUTH IN MEXICO FROM 23N TO 25N BETWEEN 96W AND 100W. A MIDDLE LEVEL TO UPPER LEVEL SHORTWAVE TROUGH IS MOVING THROUGH THE AREA FROM SOUTHEASTERN ALABAMA NEAR 32N85W TO THE NORTHEASTERN CORNER OF THE GULF OF MEXICO NEAR 27N87W. A SURFACE TROUGH IS ALONG 29N84W 29N86W 25N91W. CONVECTIVE PRECIPITATION... WIDELY SCATTERED MODERATE TO ISOLATED STRONG IN THE GULF OF MEXICO FROM 27N TO 30N BETWEEN THE FLORIDA WEST COAST AND 88W. NUMEROUS STRONG IS IN THE ATLANTIC OCEAN FROM 28N TO 32N BETWEEN 78W AND 80W. OTHER RAINSHOWERS HAVE BEEN OCCURRING ACROSS FLORIDA AND IN THE FLORIDA STRAITS DURING THE LAST 24 HOURS OR SO. LOW LEVEL AND MIDDLE LEVEL CLOUD CEILINGS COVER THE COASTAL SECTIONS OF TEXAS. A FEW STATIONS IN TEXAS ARE REPORTING SOME CLEARING SKIES AT OR LOWER THAN 12000 FEET. FAIR SKIES AT OR LOWER THAN 12000 FEET ARE REPORTED IN COASTAL LOUISIANA. PASCAGOULA MISSISSIPPI IS REPORTING A VISIBILITY OF LESS THAN ONE MILE WITH FOG. SCATTERED LOW LEVEL TO MIDDLE LEVEL CLOUDS COVER THE AREA ELSEWHERE IN MISSISSIPPI. VISIBILITIES RANGING FROM 1 MILE TO 3 MILES ARE BEING REPORTED IN THE WESTERN PART OF THE FLORIDA PANHANDLE. TALLAHASSEE FLORIDA IS REPORTING A VISIBILITY OF ONE MILE OR LESS WITH FOG. FAIR SKIES AT OR LOWER THAN 12000 FEET ARE OBSERVED TO THE SOUTH OF SARASOTA IN FLORIDA. LOW LEVEL TO MIDDLE LEVEL CLOUD CEILINGS ARE IN THE WEST CENTRAL FLORIDA WEST COAST AREA. FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N TO THE WEST OF 88W... LOW LEVEL AND MIDDLE LEVEL CLOUD CEILINGS COVER SOME OF THE ICAO STATIONS THAT ARE TO THE WEST OF 92W. FROM THE ATLANTIC OCEAN INTO THE CARIBBEAN SEA... A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM A 34N51W CYCLONIC CIRCULATION CENTER...THROUGH 32N52W TO 24N57W...ACROSS THE NORTHEASTERN CARIBBEAN SEA ISLANDS...TO 16N65W IN THE EASTERN CARIBBEAN SEA. A 1009 MB LOW PRESSURE CENTER IS NEAR 33N51W. AN OCCLUDED FRONT SPIRALS AWAY FROM THE LOW CENTER TO 32N49W. A COLD FRONT CONTINUES FROM 32N49W TO 29N50W AND 27N52W. A DISSIPATING COLD FRONT CONTINUES FROM 27N52W TO 24N59W. RAINSHOWERS ARE POSSIBLE IN THE ATLANTIC OCEAN WITHIN 120 NM ON EITHER SIDE OF THE LINE THAT PASSES THROUGH 32N45W TO 29N46W 27N50W 25N55W 24N60W TO 22N69W. RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA TO THE SOUTH OF 17N BETWEEN 60W AND 70W. THE REST OF THE CARIBBEAN SEA... NUMEROUS STRONG CONVECTIVE PRECIPITATION WAS OCCURRING IN CENTRAL AMERICA FROM PARTS OF WESTERN HONDURAS...INTO SOUTHERN GUATEMALA... AND THE EASTERN ISTHMUS OF TEHUANTEPEC OF SOUTHERN MEXICO...AND INTO THE SOUTHERN HALF OF BELIZE...ROUGHLY FROM 29/2115 UTC UNTIL 30/0115 UTC. SOME REMNANT PRECIPITATION STILL IS ACTIVE BETWEEN HONDURAS AND THE ISTHMUS OF TEHUANTEPEC. MIDDLE LEVEL TO UPPER LEVEL WESTERLY WIND FLOW MOVES FROM THE ISTHMUS OF TEHUANTEPEC OF SOUTHERN MEXICO...AND FROM THE EASTERN PACIFIC OCEAN... INTO THE WESTERN CARIBBEAN SEA. THIS WIND FLOW MERGES WITH THE BROAD UPPER LEVEL SOUTHERLY AND SOUTHWESTERLY WIND FLOW THAT IS MOVING FROM THE EASTERN PACIFIC OCEAN THAT IS TO THE EAST OF 90W... AND FROM NORTHERN SECTIONS OF SOUTH AMERICA... INTO THE CARIBBEAN SEA. THE MONSOON TROUGH IS ALONG 9N73W IN COLOMBIA... TO 9N80W IN PANAMA...BEYOND 9N84W IN SOUTHERN COSTA RICA...INTO THE EASTERN PACIFIC OCEAN. CONVECTIVE PRECIPITATION...CONVECTIVE DEBRIS CLOUDS FROM EARLIER PRECIPITATION...AND STILL POSSIBLY LINGERING PRECIPITATION...ARE IN COLOMBIA TO THE NORTH OF 3N. THE REST OF THE ATLANTIC OCEAN... A MIDDLE LEVEL TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 40N42W. THIS FEATURE EVENTUALLY SUPPORTS A DISSIPATING COLD FRONT THAT PASSES THROUGH 32N26W TO 31N26W. BROKEN MULTILAYERED CLOUDS AND POSSIBLE PRECIPITATION ARE TO THE NORTH OF 24N BETWEEN 20W AND 44W. A 1023 MB HIGH PRESSURE CENTER IS NEAR 33N69W. SURFACE ANTICYCLONIC WIND FLOW COVERS THE AREA TO THE NORTH OF 20N BETWEEN 60W AND 80W. A 1019 MB HIGH PRESSURE CENTER IS NEAR 25N38W. SURFACE ANTICYCLONIC WIND FLOW COVERS THE AREA TO THE NORTH OF 14N BETWEEN 26W AND 49W. UPPER LEVEL WIND FLOW IS PUSHING HIGH CLOUDS TOWARD THE NORTHEAST. THE HIGH LEVEL MOISTURE IS WITHIN 180 NM TO 240 NM ON EITHER SIDE OF 13N61W 17N50W 21N41W 22N31W...BEYOND 21N25W... TOWARD AFRICA. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2... FOR MORE DETAILS ABOUT THE COLD FRONT 31N51W 25N58W. EXPECT 20 KNOT WINDS OR LESS AND 8 TO 10 FOOT SEA HEIGHTS IN THE AREA THAT IS BOUNDED BY 31N67W 26N72W 22N70W 27N50W 31N49W. EXPECT ALSO 20 KNOT WINDS OR LESS AND 8 TO 9 FOOT SEA HEIGHTS TO THE SOUTH OF THE LINE 19N61W 13N37W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT