000
AGXX40 KNHC 250458
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EDT MON JUN 25 2007

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

ONE MID LEVEL RIDGE WEAKENS OVER THE ERN CONUS TONIGHT WHILE 
ANOTHER OVER THE ERN ATLC ALONG 40W STRENGTHENS. IN BETWEEN THE 
WESTERLIES SLOWLY RECEDE NWD AS STRONG TROUGH LIFTS NE. WEAK 
VORTICITY EMBEDDED IN THE ERN CONUS RIDGE ARE TRYING TO 
CONSOLIDATE NEAR THE NW GULF COAST. ON THE SURFACE TONIGHT TRPL 
WAVES REMAIN WEAK AND OF LOW LATITUDE WITH ONE NEAR 59W AND 
ANOTHER NEAR 75W. THE ATLC RIDGE DOMINATES THE REGION ANCHORED 
OVER MID OCEAN WITH IT'S AXIS GENERALLY ALONG 30N. THE RIDGE 
EXTENDS W INTO THE GULF WITH INCREASING SE WINDS W OF 90W. CARIB 
WINDS REMAIN STRONG IN THE S CENTRAL SECTION WHILE ATLC TRADES 
SLOWLY STRENGTHEN.

LATER DAY 1 WEAK VORTICITY AT MID LEVELS WORKING THEIR WAY IN 
AND UNDERNEATH THE OVERALL RIDGE PATTERN THAT PREVAILS OVER THE 
REGION. ONE AREA IS OVER THE TRPL ATLC ALONG 40W AND ANOTHER 
OVER THE BAHAMAS. ON THE SURFACE LATER DAY 1 THE ATLC RIDGE 
BEGINS TO TAKE ON IT'S SUMMER APPEARANCE WITH DEEPENING 
EASTERLIES. LITTLE CHANGE TO WINDS. GFS MODEL STILL DOES NOT 
DEPICT ANY WAVES.

FOR DAY 2 MID LEVEL RIDGES TAKE UP POSITIONS BETWEEN 30N AND 40W 
WITH INVERTED TROUGHS DRIFTING WWD ALONG 50W AND 80W. THE 
WESTERLIES NOW CONFINED TO N OF 40W. ON THE SURFACE DAY 2 THE 
ATLC RIDGE EXTENDS WWD WITH IT'S AXIS N OF 30N. MOSTLY MODERATE 
WINDS MOST SECTIONS EXCEPT S CENTRAL CARIB WHERE STRONG 25 TO 30 
KT WILL PREVAIL. 

OUTLOOK PERIOD...

FOR DAY 3 INVERTED TROUGHS AT MID LEVELS CONTINUE MOVING WWD BUT 
WEAKENING. ONE ALONG 54W AND THE OTHER OVER THE E CENTRAL GULF. 
SOME WEAKNESS TRYING TO DEVELOP ALONG 50W AT MID LEVELS BETWEEN 
TWO LARGE HIGH CENTERS. ON THE SURFACE DAY 3 A 1027 MB HIGH 
ANCHORS THE ATLC RIDGE NEAR 33N50W WITH THE AXIS REMAINING N OF 
30N. GULF WINDS DECRESE SOME TO 10 TO 15 KT AS DO ATLC TRADES. 
CARIB WINDS REMAIN 20 TO 25 KT.

FOR DAY 4 FLAT MID LEVEL RIDGES COVER THE AREA S OF 35N 
INDICATIVE OF GRADUAL WARMING OF THE ATMOSPHERE. WEAK SHORTWAVES 
IN THE SRN SIDE OF THE WESTERLIES BRUSHING THE NRN PORTION OF 
THE RIDGES BUT HAVING NO IMPACT ON OUR REGION. ON THE SURFACE 
DAY 4 ATLC RIDGE WITH 1026 MB CENTER NEAR 33N47W AND AXIS ALONG 
32N. LITTLE CHANGE TO WINDS WITH MOST VALUES LIGHT TO MODERATE.

FOR DAY 5 SIGNS OF NEW SURGE OF COLD AIR ALOFT OVER SE CANADA 
MOVING SE WILL BEGIN TO LOWER MID LEVEL HEIGHTS W OF 60W AND 
DEPRESSING THE MID LEVEL RIDGE SWD. ONE SHORTWAVE OVER THE MO 
VALLEY COULD BRUSH BY OUR REGION BEYOND DAY 5. ON THE SURFACE 
DAY 5 A 1027 MB HIGH ANCHORS THE ATLC RIDGE NEAR 33N44W WITH THE 
AXIS ALONG 31N. GFS MODEL HINTS AT A WAVE ALONG 52W BUT STILL AT 
LOW LATITUDE. WINDS OVER THE REGION MOSTLY LIGHT TO MODERATE 
WITH CARIB WINDS 15 TO 20 KT.

WARNINGS...
ATLANTIC...NONE.

CARIBBEAN...NONE.

GULF OF MEXICO...NONE.

FORECASTER RRG