000 AXNT20 KNHC 090004 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 805 PM EDT WED SEP 08 2010 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...METEOROLOGICAL ANALYSIS...WEATHER OBSERVATIONS...AND RADAR. BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 2315 UTC. ...SPECIAL FEATURES... TROPICAL STORM IGOR AT 09/0000 UTC IS NEAR 13.9N 24.2W...OR ABOUT 70 MI...115 KM SSE OF SAO FILIPE IN THE CAPE VERDE ISLANDS ... MOVING MOVING W AT 5 KT. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB. MAXIMUM SUSTAINED WIND SPEED IS 40 KT WITH GUSTS TO 50 KT. PLEASE SEE LATEST NHC INTERMEDIATE PUBLIC ADVISORY UNDER AWIPS/WMO HEADERS MIATCPAT1/WTNT31 KNHC AND THE FULL FORECAST AND ADVISORY UNDER AWIPS/WMO HEADERS MIATCMAT1/WTNT21 KNHC FOR MORE DETAILS. THIS SYSTEM IS EMBEDDED WITHIN AN AREA OF DEEP LEVEL MOISTURE AS INDICATED ON TOTAL PRECIPITABLE WATER IMAGERY. BROAD AND ELONGATED SURFACE CYCLONIC FLOW SURROUNDS IGOR AND TWO MORE SURFACE LOW PRESSURE SYSTEMS. IGOR IS GENERATING SCATTERED MODERATE TO STRONG CONVECTION FROM 12N-16N BETWEEN 24W-29W. ...TROPICAL WAVES... NONE. ...ITCZ... AN ITCZ AXIS EXTENDS FROM SW OF IGOR AT 10N25W TO 9N30W 11N50W 13N60W. BESIDES THE CONVECTION MENTIONED IN THE SPECIAL FEATURES SECTION...WIDELY SCATTERED MODERATE CONVECTION IS FROM 6N-8N BETWEEN 33W-39W...AND FROM 6N-14N BETWEEN 55W-62W. ...DISCUSSION... GULF OF MEXICO... RESIDUAL SCATTERED MODERATE CONVECTION IS INLAND OVER SE TEXAS FROM 27N-31N BETWEEN 95W-98W. SURFACE RIDGING IS OVER THE GULF OF MEXICO WITH MOSTLY FAIR WEATHER OVER THE W GULF W OF 90W. CLUSTERS OF SCATTERED MODERATE CONVECTION IS INLAND OVER THE YUCATAN PENINSULA AND S MEXICO S OF 22N. A SURFACE TROUGH IS OVER FLORIDA AND THE SE GULF ALONG 30N80W 25N84W 22N85W. WIDELY SCATTERED MODERATE CONVECTION IS WITHIN 60 NM EITHER SIDE OF THE TROUGH. IN THE UPPER LEVELS... AN UPPER LEVEL HIGH IS CENTERED OVER S LOUISIANA NEAR 30N91W. A WEDGE OF STRONG SUBSIDENCE IS OVER THE CENTRAL AND WESTERN GULF W OF 88W. EXPECT...CONTINUED CONVECTION OVER THE E GULF E OF 90W...AND OVER INLAND LOUISIANA FOR THE NEXT 24 HOURS. CARIBBEAN SEA... A RATHER LAX SURFACE PRESSURE GRADIENT IS OVER THE CARIBBEAN SEA THUS TRADEWINDS ARE MOSTLY 10-15 KT. CONVECTION FROM THE REMNANTS OF GASTON HAS REACHED HISPANIOLA. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS FROM 16N-20N BETWEEN 70W-75W MOVING W. WIDELY SCATTERED MODERATE CONVECTION IS OVER CUBA BETWEEN 75W-85W. WIDELY SCATTERED MODERATE CONVECTION IS ALONG THE COAST OF N COLOMBIA FROM 10N-14N BETWEEN 75W-81W. CLUSTERS OF SCATTERED MODERATE CONVECTION ARE INLAND OVER CENTRAL AMERICA FROM PANAMA TO S MEXICO. A SURFACE TROUGH IS OVER THE WINDWARD ISLANDS AND NE VENEZUELA ALONG 14N60W 8N61W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 6N-14N BETWEEN 55W-62W. IN THE UPPER LEVELS...AN UPPER LEVEL LOW IS CENTERED S OF CUBA NEAR 20N82W MOVING W. THE REMAINDER OF THE CARIBBEAN HAS EASTERLY UPPER LEVEL FLOW. EXPECT...CONVECTION FROM THE REMNANTS OF GASTON TO MOVE W OVER THE NEXT 24 HOURS. ATLANTIC OCEAN... A 1019 MB HIGH IS OVER THE W ATLANTIC NEAR 31N69W PRODUCING FAIR WEATHER. ANOTHER 1023 MB HIGH IS CENTERED OVER THE E ATLANTIC NEAR 37N22W. ELSEWHERE...A 1010 MB LOW IS W OF THE CAPE VERDE ISLANDS NEAR 19N36W. ANOTHER 1009 MB LOW IS OVER THE THE CAPE VERDE ISLANDS NEAR 16N21W. SCATTERED SHOWERS ARE WITHIN 60 NM OF THE CENTER. OF NOTE IN THE UPPER LEVELS...AN UPPER LEVEL HIGH IS CENTERED NE OF THE LEEWARD ISLANDS NEAR 19N57W WITH STRONG SUBSIDENCE. AN UPPER LEVEL LOW IS CENTERED OVER THE CENTRAL ATLANTIC NEAR 29N48W. ANOTHER UPPER LEVEL HIGH IS CENTERED OVER W AFRICA NEAR 22N18W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORMOSA