000 AXNT20 KNHC 200604 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 205 AM EDT THU JUN 20 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. ...SPECIAL FEATURE... THE CENTER OF TROPICAL STORM BARRY AT 20/0600 UTC IS NEAR 19.6N 96.1W...MOVING WESTWARD 5 KNOTS. THE POSITION OF THE TROPICAL DEPRESSION IS ABOUT 24 NM TO THE NORTH-NORTHEAST OF VERACRUZ MEXICO. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1004 MB. THE MAXIMUM SUSTAINED WIND SPEEDS ARE 40 KNOTS WITH GUSTS TO 50 KNOTS. PLEASE READ THE LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO HEADERS MIATCMAT2/WTNT22 KNHC AND THE PUBLIC ADVISORY UNDER MIATCPAT2/WTNT32 KNHC FOR MORE DETAILS. PLEASE REMEMBER ALSO THAT FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE...AND INTENSITY. BROKEN TO OVERCAST MULTILAYERED CLOUDS COVER THE GULF OF MEXICO TO THE SOUTH OF 26N TO THE WEST OF 85W... INCLUDING IN MEXICO AND CENTRAL AMERICA TO THE NORTH OF NICARAGUA. CONVECTIVE PRECIPITATION...NUMEROUS STRONG IN THE GULF OF MEXICO FROM 19N TO 21N BETWEEN 94W AND 96W. WIDELY SCATTERED TO SCATTERED MODERATE TO ISOLATED STRONG ELSEWHERE FROM GUATEMALA TO 23N BETWEEN 85W IN THE NORTHWESTERN CARIBBEAN SEA AND 100W. NUMEROUS STRONG IS ALONG THE EASTERN PACIFIC OCEAN COAST OF MEXICO BETWEEN 99W AND 100W. THE 24-HOUR RAINFALL TOTAL FOR THE PERIOD ENDING AT 19/0000 UTC FOR TEGUCIGALPA HONDURAS WAS 0.37 OF AN INCH...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND PRECIPITATION TABLE. ...TROPICAL WAVES... AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 15N32W 12N33W 8N34W MOVING WESTWARD 15 KNOTS. ANY NEARBY CONVECTIVE PRECIPITATION IS PART OF THE ITCZ PRECIPITATION. AN ATLANTIC OCEAN-TO-CARIBBEAN SEA TROPICAL WAVE IS ALONG 66W/67W TO THE SOUTH OF 22N...MOVING WESTWARD 10 TO 15 KNOTS. THE WAVE IS MOVING THROUGH THE EASTERN EDGE OF THE MIDDLE LEVEL TO UPPER LEVEL TROUGH WHOSE CYCLONIC WIND FLOW SPANS THE ATLANTIC OCEAN AND THE CARIBBEAN SEA BETWEEN 60W AND 80W. CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG FROM 12N TO 22N BETWEEN 56W AND 70W. RAINSHOWERS ARE POSSIBLE ALSO FROM 17N TO 20N BETWEEN 70W AND 80W. THE 24-HOUR RAINFALL TOTAL FOR THE PERIOD ENDING AT 20/0000 UTC FOR GUADELOUPE WAS 0.60 OF AN INCH...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND PRECIPITATION TABLE. ...THE ITCZ/THE MONSOON TROUGH... THE MONSOON TROUGH PASSES THROUGH THE SOUTHWESTERN COASTAL SENEGAL NEAR 12N17W...TO 9N20W AND 8N24W. THE ITCZ CONTINUES FROM 8N24W TO 8N32W 8N35W 7N44W... TO NORTHWESTERN FRENCH GUIANA NEAR 5N54W. CONVECTIVE PRECIPITATION...SCATTERED STRONG FROM 6N TO 9N BETWEEN 13W AND 16W. SCATTERED MODERATE TO ISOLATED STRONG FROM 4N TO 6N BETWEEN 16W AND 19W. ISOLATED MODERATE TO LOCALLY STRONG ELSEWHERE TO THE SOUTH OF 10N TO THE EAST OF 60W. ...DISCUSSION... THE REST OF THE GULF OF MEXICO... MIDDLE LEVEL TO UPPER LEVEL NORTHWESTERLY WIND FLOW MOVES ACROSS THE UPPER TEXAS GULF COAST...ACROSS THE NORTHERN SECTIONS OF THE GULF OF MEXICO. IT EVENTUALLY PASSES THROUGH THE SOUTHEASTERN CORNER OF THE AREA... INTO THE CARIBBEAN SEA. UPPER LEVEL ANTICYCLONIC OUTFLOW SPIRALS AWAY FROM THE AREA OF T.S. BARRY. SOME OF THIS WIND FLOW MERGES WITH THE NORTHWESTERLY WIND FLOW FROM TEXAS. COMPARATIVELY DRIER AIR IN SUBSIDENCE...APPEARING IN WATER VAPOR IMAGERY... COVERS MUCH OF THE REST OF THE GULF OF MEXICO... AWAY FROM T.S. BARRY. A SURFACE RIDGE PASSES THROUGH 32N53W IN THE ATLANTIC OCEAN...TO 30N63W 28N72W...CROSSING FLORIDA ALONG 27N/28N...TO A 1017 MB HIGH PRESSURE CENTER THAT IS NEAR 28N87W 27N91W...AND 25N97W IN THE WEST CENTRAL GULF OF MEXICO. FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE BEING REPORTED ALONG THE U.S.A. GULF OF MEXICO COASTAL PLAINS. FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N TO THE WEST OF 88W... FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE REPORTED ELSEWHERE ACROSS THE AREA. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2... AND THE OFFSHORE FORECAST...MIAOFFNT4...FOR MORE DETAILS ABOUT TROPICAL STORM BARRY. EXPECT TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER...EXCEPT WITHIN 70 NM OF THE CENTER IN THE NORTHEASTERN QUADRANT. SEA HEIGHTS 12 FEET OR GREATER WILL BE WITHIN 90 NM IN THE NORTHERN SEMICIRCLE...AND WITHIN 30 NM IN THE SOUTH SEMICIRCLE...WITH SEAS TO 15 FT. EXPECT WIND SPEEDS RANGING FROM 20 KNOTS TO 33 KNOTS AND SEA HEIGHTS FROM 8 TO 12 FEET ELSEWHERE OVER FORECAST WATERS WITHIN 180 NM OF CENTER. THE CARIBBEAN SEA... THE CYCLONIC WIND FLOW THAT IS MOVING AROUND THE BERMUDA-TO-HISPANIOLA-TO-NORTHERN COLOMBIA TROUGH COVERS THAT PART OF THE CARIBBEAN SEA THAT IS TO THE EAST OF 80W. SOME OF THE WIND FLOW THAT IS MOVING FROM THE YUCATAN PENINSULA SOUTHEASTWARD IS PART OF THE ANTICYCLONIC OUTFLOW THAT IS SPIRALLING AWAY FROM T.S. BARRY. MIDDLE LEVEL EASTERLY WIND FLOW COVERS THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA FROM 15N TO 19N TO THE WEST OF 80W. THE MONSOON TROUGH PASSES THROUGH NORTHERN COLOMBIA... PANAMA...AND COSTA RICA...ALONG 9N/10N...BETWEEN 75W AND 86W...INTO THE EASTERN PACIFIC OCEAN. CONVECTIVE PRECIPITATION...WIDELY SCATTERED MODERATE TO ISOLATED STRONG TO THE SOUTH OF 11N TO THE WEST OF 75W IN THE SOUTHWESTERN CORNER OF THE CARIBBEAN SEA...AND ACROSS COLOMBIA TO THE NORTH OF 8N TO THE WEST OF 74W...AND IN PANAMA AND COSTA RICA. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2... AND THE OFFSHORE FORECAST...MIAOFFNT3...FOR MORE DETAILS ABOUT THE 20 TO 25 KNOT NORTHEAST TO EAST WINDS AND 11 FOOT SEA HEIGHTS FROM 11.5N TO 18N BETWEEN 70W AND 82W. EXPECT 20 KNOT OR LESS WINDS AND 9 FOOT SEA HEIGHTS FROM 10N TO 18N BETWEEN 75W AND 83W. EXPECT ALSO EAST WINDS 20 TO 25 KNOTS AND 8 FOOT SEA HEIGHTS TO THE SOUTH OF 18N TO THE WEST OF 85W...INCLUDING IN THE GULF OF HONDURAS. HISPANIOLA... A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH BERMUDA...TO A 25N68W CYCLONIC CIRCULATION CENTER... ACROSS HISPANIOLA...TO 15N72W IN THE CARIBBEAN SEA... TOWARD NORTHERN COLOMBIA. CONVECTIVE PRECIPITATION... SCATTERED MODERATE TO ISOLATED STRONG FROM 12N TO 22N BETWEEN 56W AND 70W. ISOLATED MODERATE FROM 22N TO 32N BETWEEN 59W AND 72W. RAINSHOWERS ARE POSSIBLE ALSO FROM 17N TO 20N BETWEEN 70W AND 80W. THE 24-HOUR RAINFALL TOTAL FOR THE PERIOD ENDING AT 20/0000 UTC FOR GUADELOUPE WAS 0.60 OF AN INCH...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND PRECIPITATION TABLE. THE GFS MODEL FOR 700 MB SHOWS THAT AN INVERTED TROUGH WILL MOVE ACROSS HISPANIOLA AND IT WILL COVER HISPANIOLA FOR AT LEAST THE FIRST 24 TO 30 HOURS OF THE NEXT 48 HOUR PERIOD. THE TROUGH IS FORECAST TO MOVE WESTWARD...REPLACED BY A RIDGE. THE 500 MB GFS FORECAST SHOWS THAT AN INVERTED TROUGH WILL COVER HISPANIOLA FOR THE FIRST 36 HOURS OF THE NEXT 48 HOUR TIME PERIOD. THE TROUGH MOVES WESTWARD...REPLACED BY SOUTHERLY WIND FLOW. THE GFS MODEL FOR 250 MB SHOWS THAT A TROUGH WILL COVER HISPANIOLA DURING THE NEXT 48 HOURS. BROAD SURFACE CYCLONIC WIND FLOW AND SUFFICIENT MOISTURE FOR CONVECTIVE PRECIPITATION ARE FORECAST NEAR HISPANIOLA DURING THE NEXT FEW DAYS. THE REST OF THE ATLANTIC OCEAN... A MIDDLE LEVEL TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 27N44W. CYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN FROM 24N TO 34N BETWEEN 33W AND 53W. A SURFACE TROUGH IS ALONG 46W/47W FROM 24N TO 30N. RAINSHOWERS ARE POSSIBLE FROM 26N TO 29N BETWEEN 42W AND 44W. A MIDDLE LEVEL TO UPPER LEVEL TROUGH IS ALONG 32N23W TO A 24N24W CYCLONIC CIRCULATION CENTER...TO 18N29W AND 13N31W. NO SIGNIFICANT DEEP CONVECTIVE PRECIPITATION IS APPARENT IN SATELLITE IMAGERY ALONE. A SURFACE RIDGE PASSES THROUGH 32N53W IN THE ATLANTIC OCEAN...TO 30N63W 28N72W...CROSSING FLORIDA ALONG 27N/28N...TO A 1017 MB HIGH PRESSURE CENTER THAT IS NEAR 28N87W 27N91W...AND 25N97W IN THE WEST CENTRAL GULF OF MEXICO. A SURFACE RIDGE PASSES THROUGH 32N31W...TO 27N30W... 23N28W...TO THE CAPE VERDE ISLANDS. PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2...FOR MORE DETAILS ABOUT THE EAST WINDS 20 TO 25 KNOTS AND 10 FOOT SEA HEIGHTS FROM 13N TO 21N BETWEEN 59W AND 73W. EXPECT 20 KNOTS OR LESS WIND AND 8 FOOT SEA HEIGHTS FROM 10N TO 20N BETWEEN 55W AND 60W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT