000
AGXX40 KNHC 280451
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
130 AM FRI JUL 28 2006

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

A MID LEVEL RIDGE COVERS THE ATLC MARINE AREA TONIGHT CENTERED 
NEAR 32N60W WITH A SECONDARY CENTER OVER THE NE GULF. EASTERLIES 
PREDOMINATE S OF 24N FROM AFRICA WWD TO MEXICO. ON THE SURFACE A 
1030 MB HIGH WAS LOCATED NEAR 33N53W WITH AN AXIS EXTENDING WSW 
TO CENTRAL FL AND OVER THE NRN GULF. TROPICAL WAVES WERE LOCATED 
NEAR 35W..53W..71W AND 88W MOVING W APPROXIMATELY 15 KT. 

LATER DAY 1 THE MID LEVEL RIDGE OVER THE ATLC WILL MERGE WITH 
THE NE GULF CENTER AS THE WHOLE SYSTEM DRIFTS WWD BASICALLY 
ALONG 30N. THE RIDGE SEPARATES THE WESTERLIES TO THE N AND 
EASTERLIES TO THE S. ON THE SURFACE LATER DAY 1 MODERATE TRADES 
WILL PREVAIL S OF 24N E OF 80W WITH THE 1027 MB ATLC HIGH NEAR 
32N57W. MODERATE SE WINDS WILL CONTINUE OVER THE GULF W OF 95W.

ON DAY 2 LOOK FOR THE MID LEVEL RIDGE TO CONTINUE WWD WITH A NEW 
CENTER BUILDING OVER THE SRN PLAINS. A FAIRLY GOOD SHORTWAVE IN 
THE WESTERLIES WILL DROP SE OFF THE SE COAST LATE DAY 2. A WEAK 
FRONT WILL ACCOMPANY THE SHORTWAVE. THE ATLC RIDGE WEAKENS TO 
1022 MB NEAR 29N62W WITH IT'S AXIS WWD ALONG 29N. GULF WINDS 
DECREASE WHILE WINDS ELSEWHERE REMAIN ABOUT THE SAME.

OUTLOOK PERIOD...

THE SHORTWAVE MOVES OFF THE SE COAST DAY 3 AND MAKES INROADS 
INTO THE MID LEVEL RIDGE WITH TWO SEPARATE CENTERS EMERGING DAY 
3. ONE NEAR 25N65W AND THE OTHER OVER THE SRN PLAINS. ON THE 
SURFACE THE ATLC RIDGE CONTINUES TO WEAKEN WITH A 1019 MB CENTER 
LOCATED NEAR 28N60W AND THE AXIS WWD TO CENTRAL FL AND THE N 
CENTRAL GULF. WINDS OVER THE ENTIRE MARINE AREA DECREASE WITH 
ONLY MODERATE TRADES OVER THE SRN BAHAMAS EWD TO 60W.

ON DAY 4 THE SHORTWAVE GETS CUTOFF FROM THE WESTERLIES LEAVING A 
WEAKNESS IN THE PRESSURE FIELD BETWEEN 70W AND 80W. MID LEVEL 
RIDGE CENTERS REMAIN OVER THE SRN US AND NEAR 25N65W. ANOTHER 
WEAKNESS WILL EXIST BETWEEN 40W AND 60W. ON THE SURFACE THE ATLC 
RIDGE REMAINS WEAK WITH A 1021 MB CENTER NEAR 26N57W AND AN AXIS 
ALONG 27N WWD ACROSS CENTRAL FL TO THE N CENTRAL GULF. MODERATE 
E AND SE WINDS WILL BE CONFINED TO S OF 25N BETWEEN 55W AND 75W 
DAY 4.

FOR THE FIRST DAY OF AUGUST OR DAY 5 THE MID LEVEL PRESSURE 
FIELD WEAKENS OVER THE MID ATLC BETWEEN 40W AND 60W. WEAK 
IMPULSES FROM THE WESTERLIES AND THE EASTERLIES EXPLOIT THIS 
WEAKNESS WITH ONE CENTER NEAR 25N58W. THE SRN US MID LEVEL RIDGE 
HOLDS FIRM WHILE THE SECOND CENTER NEAR 27N66W WEAKENS. ON THE 
SURFACE THE ATLC RIDGE IS DEPRESSED SWD TO 25N60W WITH A 1023 MB 
CENTER. SOME WESTERLY INFLUENCE IS SEEN N OF 30N E OF 60W AS 
GRADIENT TIGHTENS AND W WINDS INCREASE TO 20 KT. SOME SLIGHT 
INCREASE IN SLY WINDS W OF 95W DAY 5 WITH LOWERING PRESSURES IN 
THE SRN PLAINS..OTHERWISE MODERATE SE WINDS WILL CONTINUE S OF 
25N BETWEEN 60W AND 75W.
   
.WARNINGS...
ATLC...NONE.
CARIBBEAN...NONE.
GULF OF MEXICO...NONE.

FORECASTER RRG