000
AGXX40 KNHC 200608
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT WED OCT 20 2010

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA 
AND TROPICAL N ATLC...AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

A 1018 MB HIGH PRES NEAR THE SE LOUISIANA COAST AT 28N88W WITH
A VERY WEAK PRES PATTERN ACROSS THE GULF OF MEXICO. LIGHT WINDS 
ACROSS THE ENTIRE AREA. THE WEAK PRES PATTERN WILL CONTINUE 
THROUGH THE WEEK...HOWEVER SLY WINDS INCREASE TO 15 KT OVER THE 
FAR NW GULF THU AND TO 20 KT ON FRI AND SAT AS THE RIDGE OVER 
THE SE U.S. STRENGTHENS SOME. ELY WINDS WILL ALSO INCREASE OVER 
THE SOUTHERN PERIPHERY OF THE RIDGE OVER THE SOUTHERN GULF.

HIGH PRES BUILDING ACROSS THE NORTHERN PORTION OF THE ATLC ZONE 
ALONG 29N/30N. THE HIGH WILL SHIFT E AS A WEAK COLD FRONT MOVES 
OFF THE SE U.S. COAST LATER TODAY. THE FRONT  WILL EXTEND FROM 
31N74W TO NORTHERN BAHAMAS THIS AFTERNOON AND FROM 31N68W TO SE 
BAHAMAS THU THEN MOVE TO 28N65W TO HISPANIOLA AND WEAKEN FRI 
THEN E OF THE AREA SAT. MOSTLY LIGHT WINDS WITH THE FRONT. HIGH 
PRES BUILDS INTO THE N PORTION OF THE AREA SUN AND ELY WINDS 
INCREASE TO 15-20 KT ALONG THE SOUTHERN PERIPHERY OF THE 
HIGH...S OF AROUND 25N. 

WINDS GENERALLY 10-15 KT ACROSS THE CARIBBEAN. A 1009 MB LOW N 
OF HONDURAS NEAR 17N83W. THE LOW WILL MEANDER ALONG THE COAST OF 
CENTRAL AMERICA THE NEXT COUPLE OF DAYS AND EVENTUALLY DRIFT TO 
THE SSW. THE LOW HAS THE POSSIBILITY OF DEVELOPING INTO A 
TROPICAL CYCLONE.

WARNINGS...

ATLC...
.NONE.

CARIBBEAN...
.NONE.
  
GULF OF MEXICO...
.NONE.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORECASTER DGS