000 AXNT20 KNHC 271132 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 805 AM EDT SUN MAY 27 2007 TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHERN SECTIONS OF SOUTH AMERICA...AND THE ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS... WEATHER OBSERVATIONS...AND RADAR. BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1015 UTC. ...ITCZ... 10N14W 6N20W 3N30W 1N40W...CROSSING THE EQUATOR AT 43W...INTO EXTREME NORTHEASTERN BRAZIL NEAR 1S50W. SCATTERED TO NUMEROUS STRONG SHOWERS AND THUNDERSTORMS FROM 2N TO 8N BETWEEN 13W AND 17W...FROM 4N TO 5N BETWEEN 28W AND 30W...FROM 4N TO 5N BETWEEN 32W AND 33W...FROM 3N TO 5N BETWEEN 36W AND 41W...FROM 3N TO 5N BETWEEN 47W AND 50W...AND ALONG THE COAST OF EXTREME NORTHEASTERN BRAZIL JUST EAST OF FRENCH GUIANA FROM 3N TO 5N BETWEEN 50W AND 52W. THE GULF OF MEXICO AND THE ATLANTIC OCEAN WEST OF 70W... ONE MIDDLE TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS IN CENTRAL TEXAS NEAR 31N99W. THIS FEATURE ADDS TO THE ATMOSPHERIC INSTABILITY BY HELPING TO SPREAD CLOUDS AND AREAS OF PRECIPITATION NORTHWARD FROM THE SOUTHWESTERN CORNER OF THE GULF OF MEXICO BEYOND 32N BETWEEN 90W AND 110W. ALMOST ALL THE PRECIPITATION IS OVER LAND. ISOLATED MODERATE SHOWERS ARE OVER INTERIOR MEXICO. ONE AREA OF SHOWERS AND POSSIBLE THUNDERSTORMS IS IN TEXAS WITHIN A 30 TO 45 NM RADIUS OF 30N99W. BROAD CYCLONIC FLOW COVERS MEXICO FROM 18N NORTHWARD BEYOND EAST OF 90W. MIDDLE TO UPPER LEVEL CYCLONIC FLOW COVERS THE AREA FROM THE EASTERN GULF OF MEXICO TO CENTRAL CUBA. THE TROUGH HAS BEEN SHIFTING EASTWARD AND NOW RUNS FROM INTERIOR FLORIDA TO CUBA. MIDDLE TO UPPER LEVEL DRY AIR SURROUNDS THIS FLORIDA-TO-CUBA TROUGH. THE CARIBBEAN SEA... ONE SURFACE TROUGH IS ALONG 78W/79W FROM JAMAICA SOUTHWARD. A 1009 MB LOW PRESSURE CENTER IS ALONG THE TROUGH NEAR 13N. STRONG SHOWERS AND THUNDERSTORMS FROM 14N TO 15N BETWEEN 77W AND 78W. A SECOND SURFACE TROUGH IS IN THE NORTHWESTERN CORNER OF THE AREA ALONG 86W/87W...FROM THE YUCATAN CHANNEL TO THE COAST OF HONDURAS. A 1010 MB LOW PRESSURE CENTER IS ALONG THE SECOND TROUGH NEAR 19N. ISOLATED MODERATE SHOWERS ARE FROM 17N TO 21N BETWEEN 83W AND 87W. MIDDLE TO UPPER LEVEL CYCLONIC FLOW COVERS THE AREA FROM THE EASTERN GULF OF MEXICO TO CENTRAL CUBA. THE TROUGH HAS BEEN SHIFTING EASTWARD AND NOW RUNS FROM INTERIOR FLORIDA TO CUBA. MIDDLE TO UPPER LEVEL DRY AIR SURROUNDS THIS FLORIDA-TO-CUBA TROUGH. A MIDDLE TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 13N78W. SCATTERED MODERATE TO STRONG SHOWERS AND THUNDERSTORMS FROM 14N TO 17N BETWEEN 71W AND 74W... AND WITHIN A 15 TO 30 NM RADIUS OF 13N73W. OTHER CLOUDS AND POSSIBLE PRECIPITATION DOMINATE THE CENTRAL CARIBBEAN SEA UNDER AN UPPER LEVEL RIDGE. THE STRONG SHOWERS AND THUNDERSTORMS THAT WERE OCCURRING JUST OFFSHORE FOR VENEZUELA FROM 11N TO 13N BETWEEN 68W AND 70W HAVE BEEN DISSIPATING WITH TIME SINCE THE EARLIER MIDNIGHT HOURS. THE ATLANTIC OCEAN EAST OF 70W... THE PERSISTENT MIDDLE TO UPPER LEVEL TROUGH FROM THE LAST SEVERAL DAYS REMAINS IN THE CENTRAL ATLANTIC OCEAN...THROUGH 32N44W TO 23N46W. THIS MIDDLE TO UPPER LEVEL TROUGH SUPPORTS THE CONTINUED CENTRAL ATLANTIC OCEAN-TO NORTHEASTERN CARIBBEAN SEA STATIONARY FRONT/SURFACE TROUGH...THROUGH 33N50W 30N55W 26N60W 22N67W. THE TROUGH GOES FROM 22N67W TO 20N73W NEAR THE WINDWARD PASSAGE. WIDELY SCATTERED TO SCATTERED MODERATE SHOWERS/ISOLATED STRONG THUNDERSTORMS FROM 20N TO 25N BETWEEN 60W AND 72W. THE FAR-EASTERN ATLANTIC OCEAN MIDDLE TO UPPER LEVEL TROUGH GOES FROM A CYCLONIC CIRCULATION CENTER NEAR 29N26W TO 22N32W TO 16N39W TO 13N40W. SURFACE ANTICYCLONIC FLOW WITH A RIDGE COVERS THE ATLANTIC OCEAN NORTH OF 10N BETWEEN AFRICA AND THE PERSISTENT CENTRAL ATLANTIC STATIONARY FRONT. $$ MT