000 AXNT20 KNHC 061100 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 805 AM EDT WED AUG 06 2014 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. ...SPECIAL FEATURES... THE CENTER OF TROPICAL STORM BERTHA IS TO THE NORTH OF THE AREA...NEAR 39.0N 65.4W AT 06/0900 UTC. THIS POSITION ALSO IS ABOUT 345 NM TO THE SOUTH-SOUTHWEST OF HALIFAX IN NOVA SCOTIA...AND ABOUT 710 NM TO THE SOUTHWEST OF CAPE RACE IN NEWFOUNDLAND. BERTHA IS MOVING NORTHEASTWARD...OR 55 DEGREES... 24 KNOTS. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1007 MB. THE MAXIMUM SUSTAINED WIND SPEEDS ARE 45 KNOTS WITH GUSTS TO 55 KNOTS. CONVECTIVE PRECIPITATION...NUMEROUS STRONG FROM 38N TO 41N BETWEEN 61W AND 64W. PLEASE READ THE LATEST NHC PUBLIC ADVISORY UNDER AWIPS/WMO HEADERS MIATCPAT3/WTNT33 KNHC AND THE FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMAT3/WTNT23 KNHC FOR MORE DETAILS. ...TROPICAL WAVES... AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 19N27W 10N30W...MOVING WESTWARD 15 KNOTS. CONVECTIVE PRECIPITATION...NO SIGNIFICANT DEEP CONVECTIVE PRECIPITATION IS APPARENT. AN ATLANTIC OCEAN SURFACE TROUGH IS ALONG 49W/50W FROM 16N SOUTHWARD...MOVING WESTWARD 15 KNOTS. CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO STRONG FROM 10N TO 13N BETWEEN 50W AND 58W. ISOLATED MODERATE FROM 10N TO 13N BETWEEN 40W AND 50W. A CARIBBEAN SEA SURFACE TROUGH IS ALONG 63W/64W FROM 16N SOUTHWARD...MOVING WESTWARD 20 KNOTS. CONVECTIVE PRECIPITATION...BROKEN TO OVERCAST MULTILAYERED CLOUDS AND ISOLATED MODERATE TO LOCALLY STRONG FROM 10N TO 15N BETWEEN 60W AND 68W. AN ATLANTIC OCEAN-TO-CARIBBEAN SEA TROPICAL WAVE IS ALONG 23N68W...CUTTING ACROSS THE SOUTHEASTERN CORNER OF THE DOMINICAN REPUBLIC...TO NORTHWESTERN VENEZUELA. THE WAVE IS MOVING WESTWARD 20 KNOTS. CONVECTIVE PRECIPITATION...ISOLATED MODERATE TO LOCALLY STRONG FROM 15N TO 24N BETWEEN 64W AND 72W. CONVECTIVE DEBRIS CLOUDS REMAIN ACROSS HAITI...AFTER THE EARLIER PRECIPITATION ENDED. A WESTERN CARIBBEAN SEA TROPICAL WAVE IS ALONG 21N79W 15N81W 8N81W IN PANAMA. CONVECTIVE PRECIPITATION...ISOLATED MODERATE BETWEEN 80W AND 83W. ...ITCZ/MONSOON TROUGH... THE MONSOON TROUGH PASSES THROUGH THE COASTAL SECTIONS OF SENEGAL NEAR 14N17W TO 10N24W AND 8N35W. THE ITCZ CONTINUES FROM 8N35W TO 9N44W AND 8N47W. CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG FROM 5N TO 11N BETWEEN AFRICA AND 40W...AND FROM 10N SOUTHWARD BETWEEN 40W AND 60W. ...DISCUSSION... FROM THE WESTERN ATLANTIC OCEAN...ACROSS FLORIDA...INTO THE EASTERN AND SOUTHEASTERN GULF OF MEXICO...AND IN PARTS OF THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA...AND THE REST OF THE GULF OF MEXICO... A SURFACE TROUGH EXTENDS FROM A 1010 MB ATLANTIC OCEAN LOW PRESSURE CENTER THAT IS NEAR 34N71W...THROUGH 32N73W...TO 28N77W...ACROSS SOUTH FLORIDA...TO THE GULF OF MEXICO JUST OFF THE SOUTHWESTERN FLORIDA COAST NEAR 26N82W. UPPER LEVEL ANTICYCLONIC WIND FLOW IS MOVING ACROSS THIS AREA. CONVECTIVE PRECIPITATION...NUMEROUS STRONG IN THE ATLANTIC OCEAN WITHIN 60 NM ON EITHER SIDE OF 38N64W 35N68W 31N74W. ISOLATED MODERATE IN THE ATLANTIC OCEAN FROM 26N TO 30N BETWEEN 73W AND 80W...AND OFF THE SOUTHWESTERN FLORIDA COAST FROM 25N TO 26N WITHIN 30 NM ON EITHER SIDE OF 82W. WEAK SURFACE ANTICYCLONIC WIND FLOW COVERS THE AREA...AROUND A 1018 MB HIGH PRESSURE CENTER THAT IS NEAR 27N86W. A MIDDLE LEVEL TO UPPER LEVEL INVERTED TROUGH IS ALONG THE LINE FROM THE WESTERN PARTS OF THE FLORIDA PANHANDLE INTO THE SOUTHWESTERN CORNER OF THE GULF OF MEXICO...BEYOND 22N97W ALONG THE MEXICO COAST. CONVECTIVE PRECIPITATION...ISOLATED MODERATE FROM 84W WESTWARD IN THE GULF OF MEXICO. FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N TO THE WEST OF 88W... LOW LEVEL CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO STATIONS...KHQI IS REPORTING LOW CLOUD CEILINGS AND VISIBILITIES OF 1 MILE OR LESS WITH FOG...AND KATP. MIDDLE LEVEL CLOUD CEILINGS ARE BEING REPORTED AT...KBBF AND KBQX. THE CARIBBEAN SEA... A CARIBBEAN SEA SURFACE TROUGH IS ALONG 63W/64W FROM 16N SOUTHWARD...MOVING WESTWARD 20 KNOTS. CONVECTIVE PRECIPITATION...BROKEN TO OVERCAST MULTILAYERED CLOUDS AND ISOLATED MODERATE TO LOCALLY STRONG FROM 10N TO 15N BETWEEN 60W AND 68W. AN ATLANTIC OCEAN-TO-CARIBBEAN SEA TROPICAL WAVE IS ALONG 23N68W...CUTTING ACROSS THE SOUTHEASTERN CORNER OF THE DOMINICAN REPUBLIC...TO NORTHWESTERN VENEZUELA. THE WAVE IS MOVING WESTWARD 20 KNOTS. CONVECTIVE PRECIPITATION...ISOLATED MODERATE TO LOCALLY STRONG FROM 15N TO 24N BETWEEN 64W AND 72W. CONVECTIVE DEBRIS CLOUDS REMAIN ACROSS HAITI...AFTER THE EARLIER PRECIPITATION ENDED. A WESTERN CARIBBEAN SEA TROPICAL WAVE IS ALONG 21N79W 15N81W 8N81W IN PANAMA. CONVECTIVE PRECIPITATION...ISOLATED MODERATE BETWEEN 80W AND 83W. A MIDDLE LEVEL TO UPPER LEVEL INVERTED TROUGH IS ALONG 85W/86W IN THE WESTERN PART OF THE CARIBBEAN SEA. CONVECTIVE PRECIPITATION...ISOLATED MODERATE BETWEEN 83W AND THE COASTLINE FROM MEXICO TO BELIZE TO HONDURAS. NUMEROUS STRONG IS IN THE GULF OF HONDURAS. BROAD MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS THE AREA. NORTHEASTERLY WIND FLOW IS TO THE EAST OF 75W...WHILE SOUTHEASTERLY WIND FLOW COVERS THE AREA FROM 75W WESTWARD. WINDS AND SEA HEIGHTS...EXPECT NORTHEAST WINDS 20 TO 25 KNOTS AND SEA HEIGHTS TO 8 FEET FROM 11N TO 13N BETWEEN 73W AND 76W. ...HISPANIOLA... AN ATLANTIC OCEAN-TO-CARIBBEAN SEA TROPICAL WAVE IS ALONG 23N68W...CUTTING ACROSS THE SOUTHEASTERN CORNER OF THE DOMINICAN REPUBLIC...TO NORTHWESTERN VENEZUELA. THE WAVE IS MOVING WESTWARD 20 KNOTS. CONVECTIVE PRECIPITATION...ISOLATED MODERATE TO LOCALLY STRONG FROM 15N TO 24N BETWEEN 64W AND 72W. CONVECTIVE DEBRIS CLOUDS REMAIN ACROSS HAITI...AFTER THE EARLIER PRECIPITATION ENDED. MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC WIND FLOW IS CROSSING HISPANIOLA. SOME LATE AFTERNOON AND EVENING RAINSHOWERS MAY DEVELOP ACROSS THE DOMINICAN REPUBLIC ON WEDNESDAY...ASSOCIATED WITH THE 63W/64W SURFACE TROUGH. THE ATLANTIC OCEAN... TROPICAL STORM BERTHA IS OUTSIDE THE BOUNDARY FOR THIS BULLETIN. BERTHA IS ABOUT 345 NM TO THE SOUTH-SOUTHWEST OF HALIFAX IN NOVA SCOTIA...AND ABOUT 710 NM TO THE SOUTHWEST OF CAPE RACE IN NEWFOUNDLAND. THE MINIMUM CENTRAL PRESSURE IS 1007 MB. CONVECTIVE PRECIPITATION...NUMEROUS STRONG FROM 38N TO 41N BETWEEN 61W AND 64W. A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM A 28N50W CYCLONIC CIRCULATION CENTER...TO 22N52W AND TO 18N56W. CONVECTIVE PRECIPITATION...SCATTERED MODERATE FROM 24N TO 32N BETWEEN 48W AND 54W...AND FROM 24N TO 25N BETWEEN 58W AND 62W. A SURFACE RIDGE EXTENDS FROM 36N14W TO A 1025 MB HIGH PRESSURE CENTER THAT IS NEAR 35N23W...TO A SECOND 1025 MB HIGH PRESSURE CENTER THAT IS NEAR 32N32W...THROUGH 32N40W...TO 30N53W...TO 27N70W. A 1024 MB HIGH PRESSURE CENTER ALSO IS NEAR 34N56W. SURFACE ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN FROM 24N NORTHWARD BETWEEN AFRICA AND 70W. WINDS AND SEA HEIGHTS...A SURFACE TROUGH IS ALONG 31N75W TO 27N80W. EXPECT SOUTH TO SOUTHWEST WINDS 20 TO 25 KNOTS AND SEA HEIGHTS FROM 8 TO 9 FEET WITHIN 240 NM TO THE EAST OF THE TROUGH TO THE NORTH OF 30N. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT