000
AGXX40 KNHC 220627
MIMATS

MARINE WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
245 AM EDT FRI APR 22 2011

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

GULF OF MEXICO...
SE WINDS OF 20 KT ARE NOTED PER SURFACE DATA AND THE MOST RECENT 
ASCAT PASS ACROSS THE CENTRAL AND WESTERN PORTIONS OF THE GULF. 
HIGH PRES REMAINS IN CONTROL OF THE WEATHER PATTERN ACROSS THE 
REGION. THE PRES GRADIENT BETWEEN THIS HIGH CURRENTLY CENTERED 
OVER THE NE PART OF THE GULF AND TROUGHING OVER THE PLAINS AND 
NE MEXICO WILL RESULT IN 20 TO OCCASIONALLY 25 KT SE RETURN FLOW 
OVER THE GULF THROUGH THE FORECAST PERIOD. WINDS INCREASE ACROSS 
MOST OF THE AREA OVER THE WEEKEND AS HIGH PRES STRENGTHENS ALONG 
THE EASTERN U.S. AND THE WESTERN ATLC. SEAS WILL BUILD TO 8 FT 
OVER THE WESTERN GULF LATE SAT.

SOUTHWEST N ATLC...
LOW PRES SYSTEM E OF THE AREA COMBINED WITH A RIDGE ACROSS THE N 
PORTION OF THE REGION IS PRODUCING 20-25 KT NE WINDS OVER THE 
EASTERN PORTION OF THE ZONE. A TROUGH EXTENDS FROM LOW CENTER TO 
THE MONA PASSAGE. THE 0200 ASCAT PASS VERIFIED THE EXISTENCE OF 
20-25 KT WINDS ON THE WESTERN SEMICIRCLE OF THE LOW CENTER AS 
WELL AS THE WIND SHIFT ASSOCIATED WITH THE TROUGH. A JASON PASS 
INDICATED SEAS TO 11 FT JUST WEST OF THE LOW. DISORGANIZED 
SHOWER AND TSTMS ACTIVITY IS ASSOCIATED WITH THIS SYSTEM...AND 
UPPER-LEVEL WINDS ARE EXPECTED TO BECOME LESS CONDUCIVE FOR 
DEVELOPMENT TODAY. THERE IS A LOW CHANCE OF THIS SYSTEM 
DEVELOPING INTO A SUBTROPICAL OR TROPICAL CYCLONE DURING THE 
NEXT 48 HOURS. THIS AREA OF LOW PRES CURRENTLY LOCATED NEAR 
25N63W WILL MEANDER THERE THROUGH THIS EVENING. HIGH PRES WILL 
BUILD ACROSS THE EASTERN U.S. AND THE WESTERN ATLC RESULTING IN 
A TIGHTENING PRES GRADIENT BETWEEN THE HIGH AND THE LOW PRES 
THAT WILL REMAIN JUST E OF THE SW N ATLC. AS HIGH PRES CONTINUES 
TO INTENSIFY ACROSS THE REGION...EXPECT WINDS OF 20-25 KT ACROSS 
THE EASTERN PART OF THE AREA THROUGH SUN WHILE SPREADING JUST E 
OF THE BAHAMAS. THE LOW PRES IS FORECAST TO MOVE SW REACHING 
23N67W SAT EVENING...THEN WEAKEN INTO A TROUGH NEAR HISPANIOLA 
LATE SUN. THE TROUGH WILL DISSIPATE LATE MON...WITH A RIDGE 
ALONG 31N BY TUE.

CARIBBEAN SEA AND TROPICAL ATLC W OF 55W...
RATHER TRANQUIL CONDITIONS ACROSS THE CARIBBEAN WITH THE ONLY 
EXCEPTIONS BEING THE GULF OF HONDURAS AND THE WINDWARD PASSAGE 
WHERE WINDS OF 20 KT ARE BLOWING. THESE CONDITIONS ARE EXPECTED 
TO CONTINUE ACROSS THE GULF OF HONDURAS THROUGH FRI NIGHT THEN 
DECREASE TO BELOW 20 KT OVER THE WEEKEND INTO EARLY NEXT WEEK. 
WINDS THROUGH THE WINDWARD PASSAGE WILL CONTINUE THROUGH THE 
WEEKEND THEN DECREASE TO LESS THEN 20 KT ON MON. OTHERWISE ELY 
WINDS OF 10-15 KT ACROSS THE REMAINDER OF THE CARIBBEAN WITH 
SIGNIFICANT WAVE HEIGHTS BELOW 6 FT. SEAS WILL SLIGHTLY 
INCREASE NEAR THE COAST OF COLOMBIA THROUGH THE UPCOMING WEEKEND.

WARNINGS..

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

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

$$
FORECASTER GR