000
AGXX40 KNHC 221945
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
345 PM EDT THU JUL 22 2010

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

GULF OF MEXICO 1008 MB SURFACE LOW PRES CENTER CURRENTLY AT 
21N94W DRIFT W AND COULD POSSIBLY BECOME TROPICAL CYCLONE WITHIN 
24 HRS BEFORE COMING INLAND.  SCATTERED TO NUMEROUS TSTMS WITHIN 
240 NM NE OF CENTER.  MODERATE TO FRESH E-SE BREEZE ACROSS 
STRAITS OF FLORIDA AND EASTERN GULF S OF 26N E OF 87W.  WINDS 
ACROSS STRAITS OF FLORIDA INCREASE FRI AS TROPICAL SYSTEM 
APPROACHES FROM THE BAHAMAS.  WINDS VEER SE FRI NIGHT AND SAT 
AND DIMINISH TO A MODERATE BREEZE SUN AND MON. 

ATLC TROPICAL DEPRESSION THREE NEAR 22.7N 75.4W 1007 MB AT 
2100 UTC IS MOVING NW AT 12 KT. THE DEPRESSION IS FORECAST TO
INTENSIFY INTO A STORM AS IT MOVES W-NW THROUGH THE BAHAMA BANK 
INTO S FLORIDA AND STRAITS OF FLORIDA FRI.  MAXIMUM WINDS 40 
GUSTS TO 50 KT WITH SEAS UP TO 16 FT.

N OF 28N TIGHT PRES GRADIENT BETWEEN TROPICAL SYSTEM AND HIGH 
PRES RIDGE ALONG 31N KEEP STRONG E-SE FLOW ACROSS REMAINDER SW N 
ATLC BASIN.  WINDS DECREASE LATE FRI AND SAT AS SYSTEM MOVES W 
INTO GULF OF MEXICO.  MODERATE TO FRESH SE FLOW LINGER OVER 
BASIN REMAINDER OF FORECAST PERIOD.   

TROPICAL WAVE OVER WESTERN CARIBBEAN PREVIOUSLY ALONG 82W HAS 
WEAKENED AND MOVED INLAND INTO NICARAGUA.  SECOND TROPICAL WAVE 
ALONG 48W ENTER TROPICAL ATLC ZONE SAT AND CROSS E CARIBBEAN SUN 
AND MON.  WINDS EXPECTED TO INCREASE TO 20 KT ACROSS EASTERN 
CARIBBEAN AND TROPICAL ATLC ZONES AS PRES GRADIENT TIGHTENS  
BETWEEN ATLC RIDGE AND TROPICAL WAVE APPROACHING WINDWARD 
ISLANDS.  OTHERWISE LITTLE CHANGE IS EXPECTED.

WARNINGS...
ATLC...
.TROPICAL STORM WARNING S OF 25N W OF 75W...AMZ080.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.TROPICAL STORM WARNING S OF 27N E OF 84W...GMZ086.

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

$$
FORECASTER WALLY BARNES