000
AGXX40 KNHC 221659
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
100 PM EDT THU MAR 22 2007

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

UPPER LEVELS...
BROAD WEAK TROUGH EAST OF 90W AND MODERATE RIDGE WEST OF 90W.
THE RIDGE WILL EXPAND NORTHEASTWARD AND BY TUESDAY THE RIDGE
WILL BE A BROAD WEAK RIDGE WEST OF 70W.  THE TROUGH WILL EXPEND
SOUTHWARD OVER THE CARIBBEAN THROUGH SATURDAY THEN WEAKEN WEST OF
70W THROUGH TUESDAY.  ON TUESDAY A MODERATE TROUGH WILL BE EAST
OF 70W.  THE ONLY MIDDLE LATITUDE SHORTWAVES TO IMPACT THE AREA
WILL BE ON MONDAY AND TUESDAY.  A WEAK SHORTWAVE WILL PASS OVER
THE NORTHWEST GULF OF MEXICO COAST MONDAY THEN MOVE NORTH OF THE
AREA TUESDAY. A STRONG SHORTWAVE WILL DROP SOUTH OF 31N EAST OF
67W LATE MONDAY AND TUESDAY.

SURFACE...
STRONG RIDGE NORTH OF THE AREA WILL WEAKEN TONIGHT THEN CHANGE
LITTLE SATURDAY AND WEAKEN FURTHER SUNDAY.  RIDGE WILL BE
REINFORCED FROM THE NORTH ON MONDAY AND TUESDAY WITH A STRONG
RIDGE NORTH OF THE ATLANTIC AREA ON TUESDAY.  THE RIDGE NORTH OF
THE GULF OF MEXICO WILL REMAIN MODERATE UNTIL WEAKENING SOME
MONDAY AND TUESDAY.  THE TROUGH THAT HAS BEEN FORECAST TO AFFECT
THE SOUTHEAST PART OF THE ATLANTIC AREA IS NOW FORECAST TO
DEVELOP A LITTLE FURTHER EAST AND WILL IMPACT THE AREA EAST OF
60W NORTH OF 22N MAINLY ON TUESDAY.  THE ATLANTIC TROUGH AND THE
REINFORCING RIDGE ARE BOTH RELATED TO THE STRONG UPPER LEVEL
SHORTWAVE IMPACTING THE ATLANTIC AREA MONDAY AND TUESDAY.

WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL