000 AXNT20 KNHC 070605 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 205 AM EDT SUN APR 07 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 11N16W TO 5N18W...CROSSING THE EQUATOR ALONG 27W... TO 1S29W. THE ITCZ CONTINUES FROM 1S29W..TO 2S34W...INTO NORTHEASTERN BRAZIL NEAR 5S40W AND 6S44W. CONVECTIVE PRECIPITATION...SCATTERED STRONG FROM 3N TO 6N BETWEEN 4W AND 13W...AND FROM 3N TO 4N BETWEEN 19W AND 23W. SCATTERED MODERATE TO STRONG TO THE SOUTH OF 4N BETWEEN 25W AND 31W. RAINSHOWERS ARE POSSIBLE ELSEWHERE TO THE SOUTH OF 12N BETWEEN 20W AND 47W. NUMEROUS STRONG FROM 1N TO 1S BETWEEN 48W AND 49W ALONG THE BRAZIL COAST. ...DISCUSSION... FROM THE ATLANTIC OCEAN INTO THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N68W TO 25N71W...ACROSS SOUTHEASTERN CUBA TO JAMAICA... TO NORTH CENTRAL HONDURAS. THE TROUGH SUPPORTS A FRONTAL BOUNDARY THAT CONSISTS OF...A STATIONARY FRONT PASSES THROUGH 32N64W TO A 1012 MB LOW PRESSURE CENTER THAT IS NEAR 31N65W. AN OCCLUDED FRONT EXTENDS FROM THE 1012 MB LOW CENTER TO A 1014 MB LOW PRESSURE CENTER THAT IS NEAR 31N71W. A SURFACE TROUGH EXTENDS FROM THE 1014 MB LOW CENTER TO 28N71W AND 26N73W. A COLD FRONT EXTENDS FROM THE 31N65W LOW PRESSURE CENTER TO 24N70W...ACROSS THE SOUTHEASTERN BAHAMAS TO SOUTHEASTERN CUBA NEAR 21N75W. THE FRONT BECOMES STATIONARY FROM 21N75W TO 18N80W... CURVING THROUGH NORTHEASTERN NICARAGUA...TO EASTERN COASTAL NICARAGUA NEAR 12N84W. A PRE-FRONTAL TROUGH IS WITHIN 120 NM TO THE EAST OF THE COLD FRONT...FROM 22N TO 30N. CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO STRONG TO THE NORTH OF 26N BETWEEN 58W AND 63W IN THE ATLANTIC OCEAN. BROKEN TO OVERCAST MULTILAYERED CLOUDS AND POSSIBLE RAINSHOWERS ARE ELSEWHERE IN THE ATLANTIC OCEAN TO THE NORTH OF 20N BETWEEN THE LINE 22N77W BEYOND 32N70W AND THE LINE 20N65W 26N55W BEYOND 32N52W. RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA WITHIN 120 NM TO 180 NM TO THE WEST OF THE LINE THAT PASSES THROUGH THE WINDWARD PASSAGE TO 16N80W TO SOUTHEASTERN NICARAGUA. THE GULF OF MEXICO... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH CENTRAL LOUISIANA TO 28N93W IN THE NORTHWESTERN CORNER OF THE GULF...TO 25N97W ALONG THE COAST OF NORTHEASTERN MEXICO. MIDDLE LEVEL TO UPPER LEVEL WESTERLY WIND FLOW COVERS THE REST OF THE AREA. A SURFACE RIDGE PASSES THROUGH 32N81W ALONG THE SOUTHEASTERN COAST OF SOUTH CAROLINA...TO 29N84W IN THE NORTHEASTERN CORNER OF THE GULF OF MEXICO... TO 24N92W...INTO THE SOUTHWESTERN CORNER OF THE AREA NEAR 19N96W ALONG THE MEXICO COAST. FAIR SKIES COVER THE TEXAS COASTAL PLAINS. FALFURRIAS TEXAS IS REPORTING SCATTERED CLOUDS AT 9500 FEET. PALACIOS REPORTS A LOW CLOUD CEILING AT 2900 FEET. LOW CLOUD CEILINGS COVER THE TEXAS GULF COASTAL AREAS FROM THE METROPOLITAN AREA OF HOUSTON TO GALVESTON AND SOUTHWESTERN LOUISIANA. FAIR SKIES COVER THE U.S.A. GULF COASTAL PLAINS FROM SOUTHEASTERN LOUISIANA TO SOUTHWESTERN FLORIDA. LOW CLOUD CEILINGS ARE REPORTED IN THE FLORIDA KEYS. FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N TO THE WEST OF 88W... THE TEXAS COASTAL REPORTS...ICAO STATION KGVX LOW CLOUD CEILING AT 3400 FEET...SCATTERED LOW CLOUDS ARE AT KMZG AND AT KBBF... ICAO STATION KHQI LOW CLOUD CEILING AT 3200 FEET. KEHC LOW CLOUD CEILING 3300 FEET. SCATTERED LOW CLOUDS COVER THE REST OF THE AREA. THE REST OF THE CARIBBEAN SEA... A MIDDLE LEVEL TO UPPER LEVEL RIDGE EXTENDS FROM LAKE MARACAIBO IN EXTREME NORTHWESTERN VENEZUELA...THROUGH 15N64W IN THE CARIBBEAN SEA...TO 21N60W IN THE ATLANTIC OCEAN...TO 26N55W BEYOND 32N49W. THE MONSOON TROUGH EXTENDS FROM 6N74W IN COLOMBIA... TO THE COLOMBIA COAST ALONG 5N/6N...TO THE PANAMA/ COSTA RICA BORDER NEAR 9N83W...AND BEYOND 7N87W IN THE EASTERN PACIFIC OCEAN. CONVECTIVE PRECIPITATION...ISOLATED MODERATE IN COLOMBIA TO THE NORTH OF 3N TO THE WEST OF 73W...AND IN THE EASTERN PACIFIC OCEAN TO THE NORTH OF 4N BETWEEN 81W AND 87W. RAINSHOWERS ARE POSSIBLE ELSEWHERE TO THE NORTHEAST OF 13N57W IN THE ATLANTIC OCEAN...15N66W AND 17N71W IN THE CARIBBEAN SEA. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2...AND THE OFFSHORE FORECAST...MIAOFFNT3...FOR MORE DETAILS ABOUT THE 24 HOUR FORECAST OF 20 TO 25 KNOT WINDS AND SEA HEIGHTS REACHING 8 FEET FROM 10.5N TO 13N BETWEEN 70W AND 77W. A SECOND POINT OF INTEREST IS A 48 HOUR FORECAST OF 20 TO 25 KNOT WINDS AND SEA HEIGHTS LOWER THAN 8 FEET TO THE SOUTH OF 17N BETWEEN 85W AND 87W INCLUDING IN THE GULF OF HONDURAS. THE REST OF THE ATLANTIC OCEAN... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N22W TO 27N23W 21N27W 17N35W AND 12N43W. THE TROUGH SUPPORTS A COLD FRONT THAT PASSES THROUGH 32N22W TO 30N25W. THE FRONT IS DISSIPATING FROM 30N25W TO 28N29W AND 27N34W. RAINSHOWERS ARE POSSIBLE TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES THROUGH 32N16W TO 28N22W 25N30W AND 25N43W. A SURFACE RIDGE PASSES THROUGH 32N42W TO 28N49W... AND TO 25N57W 21N64W...AND TO THE CENTER OF THE DOMINICAN REPUBLIC. BROAD SURFACE ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN...AND AWAY FROM THE DISSIPATING COLD FRONT. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2... FOR MORE DETAILS ABOUT THE 1012 MB LOW PRESSURE CENTER THAT IS NEAR 31N66W...AND THE ASSOCIATED FRONTAL BOUNDARIES AND TROUGHS. EXPECT NORTH TO NORTHEAST 20 TO 30 KNOT WINDS AND SEA HEIGHTS RANGING FROM 8 TO 11 FEET TO THE NORTH OF 29N TO THE NORTHWEST OF THE LOW CENTER AND FRONTS TO 78W. EXPECT SOUTH TO SOUTHWEST 20 TO 30 KNOT WINDS AND 8 TO 10 FOOT SEA HEIGHTS TO THE NORTH OF 26N TO THE EAST OF THE TROUGH TO 62W. A SECOND AREA OF INTEREST IS TO THE EAST AND SOUTH OF A LINE FROM 17N35W TO 22N48W TO 21N60W TO 16N60W TO 07N52W...EXPECT 20 KNOT OR LESS WINDS AND 8 TO 10 FOOT SEA HEIGHTS. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT