000
AGXX40 KNHC 190559
MIMATS

MARINE WEATHER DISCUSSION   
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
200 AM EDT WED APR 19 2006

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

UPPER LEVEL...
DEEP LAYER CYCLONIC CIRCULATION WELL N OF FORECAST WATERS HAS 
LONGWAVE TROUGH DIG S JUST E OF 65W AND INTO TROPICAL ATLC ALONG 
58W.  AIRMASS REMAIN VERY DRY IN SPITE OF THIN SWATH OF TROPICAL 
MOISTURE ADVECTED E-SE BY WEAK 80 KT JET JUST E OF NRN BAHAMAS.  
DRYNESS EXTEND INTO ENTIRE CARIBBEAN SEA AND TROPICAL ATLC.  

BROAD RIDGE OVER GULF OF MEXICO EXTEND DRY CONDITIONS THROUGH 
ENTIRE GULF ALTHOUGH UPSTREAM UPPER TROUGH AND WEAK COLD FRONT 
OVER CENTRAL PLAINS BRINGING SOME MOISTURE ACROSS CENTRAL TEXAS 
JUST E OF BIG BEND.  CONVECTION TO BE EXPECTED WHEN COLD FRONT 
APPROACH TEXAS COASTLINE.

AT THE SURFACE...
COLD FRONT FROM NEAR 29N65W 27N75W 29N81W MOVE S AND WEAKEN LATE 
TODAY AS ASSOCIATED UPPER SUPPORT HEADS MORE NE.  STRONG WINDS N 
OF 27N AHEAD OF FRONT QUICKLY LOSE ENERGY AND WEAK PRES GRADIENT 
BEHIND DOES NOT FORCE WINDS S OF 31N.  WEAK COLD FRONT MOVE OFF 
SE U.S. COAST SUN AND EXTEND ACROSS FAR NW PART OF ATLC AREA 
LATE SUN.  

TRADES WEAKER THAN NORMAL THROUGH WED THEN STRENGTHEN THU  
THROUGH SAT WITH STRONG WINDS BY LATE SAT...UP TO 30 KT...ALONG 
N COAST OF COLOMBIA.
      
WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER WALLY BARNES