000
AGXX40 KNHC 230500
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EDT SAT JUN 23 2007

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

A STRONG WESTERLY INFLUENCE STILL PERSISTS WITH A NWLY FLOW 
ALOFT DIVING SE OFF THE MID ATLC COAST TONIGHT. A STUBBORN 
CUTOFF LOW WAS LOCATED OFF THE NEW ENGLAND COAST MOVING SLOWLY 
E. MID LEVEL RIDGING CONTINUES TONIGHT FROM THE MID CONUS OVER 
OUR REGION TO THE ERN ATLC. EMBEDDED WEAK SHORTWAVES ARE IN THE 
RIDGE OVER THE PLAINS WORKING THEIR WAY SLOWLY SE. ON THE 
SURFACE TONIGHT TRPL WAVES REMAIN WEAK WITH ONE OVER MID OCEAN 
NEAR 43W ANOTHER NEAR 60W AND A THIRD NEAR 87W. ENVIRONMENTAL 
CONDITIONS ARE NOT CONDUCIVE TO DEVELOPMENT OF ANY OF THESE 
WAVES. A WEAK LOW 1012 MB WAS OFF THE NE FL COAST MOVING SLOWLY 
E WITH ONLY ISOLATED CONVECTION AND LIGHT WINDS. OTHERWISE A 
1026 MB HIGH ANCHORS THE ATLC RIDGE OVER MID OCEAN WITH THE AXIS 
EXTENDING WSW TO 24N70W. 

LATER DAY 1 STRONG ANTICYCLONIC SHEAR ALOFT FAVORS DEVELOPMENT 
OF THE RIDGE OVER THE PLAINS AND WEAKENING OF THE TROUGH OFF THE 
NEW ENGLAND COAST. LITTLE CHANGE ELSEWHERE. ON THE SURFACE LATER 
DAY 1 THE WEAK LOW MOVES TO NEAR 28N72W WITH LIGHT WINDS. GULF 
WINDS REMAIN LIGHT WHILE CARIB WINDS DIMINISH SOME. LITTLE 
CHANGE TO THE ATLC RIDGE WITH ATLC TRADES MOSTLY 15 TO 20 KT. 

FOR DAY 2 DECREASING AMPLITUDE IN THE MID LEVELS AS THE STRONG 
CUTOFF LOW OFF THE NEW ENGLAND COAST LIFTS NWD. STRENGTHENING 
MID LEVEL RIDGE NEAR 35N40W FAVORS STRONGER ATLC RIDGE AT 
SURFACE. EMBEDDED VORTICITY CENTERS IN PLAINS RIDGE TRYING TO 
CONSOLIDATE INTO A LARGE TROUGH OVER THE NW GULF. ON THE SURFACE 
DAY 2 THE ATLC RIDGE BUILDS TO 1030 MB CENTER OVER MID OCEAN BUT 
THE RIDGE AXIS REMAINS E OF 70W. ATLC TRADES INCREASE SOME E OF 
60W AND BUILD NWD E OF 50W. CARIB WINDS REMAIN 20 TO 25 KT OVER 
THE S CENTRAL SECTION WHILE WRN GULF WINDS INCREASE TO 20 KT.

OUTLOOK PERIOD...

FOR DAY 3 THE MID LEVEL RIDGE OVER THE CENTRAL CONUS BEGINS TO 
MOVE EWD TO 85W WHILE TROUGHING SLOWLY STRENGTHENS OVER THE 
PLAINS. A STRONG MID LEVEL RIDGE SETS UP OVER THE E CENTRAL ATLC 
BUT REMAINS E OF 65W. INVERTED TROUGHING DEVELOPS ON THE S SIDE 
OF THE RIDGE ALONG 45W. ON THE SURFACE DAY 3 THE ATLC RIDGE 
BEGINS TO EXTEND WWD OVER THE REGION BUT WITH IT'S AXIS ALONG 
30N. THIS INCREASES TRADES TO 25N AND MAINTAINS SELY WINDS TO 20 
KT W OF 90W. 

FOR DAY 4 MID LEVEL HIGH PRES BEGINS TO DOMINATE THE WRN 
HEMISPHERE WITH ONE CENTER NEAR 38N80W AND THE OTHER NEAR 
35N40W. THE WESTERLIES ARE CONFINED TO 40N AND N. INVERTED 
TROUGHING ALONG 50W AT MID LEVELS DRIFTING SLOWLY WWD. ON THE 
SURFACE DAY 4 A SLIGHT BENDING CYCLONICALLY OF THE ISOBARS ALONG 
50W OTHERWISE LITTLE AFFECT OF THE MID LEVEL TROUGH. SIMILAR 
CONDITION ALONG 75W. LITTLE CHANGE TO OVERALL WIND PATTERN WITH 
MODERATE WINDS ALL SECTIONS AND STRONGEST WINDS OVER THE CARIB E 
OF 80W. 

FOR DAY 5 MID LEVEL RIDGING SHOWING SIGNS OF WEAKENING AND 
REPOSITIONING CENTERS. THE ERN ATLC CENTER WEAKENS WHILE A NEW 
CENTER FORMS FURTHER W NEAR 33N67W. INVERTED TROUGHING ALONG 50W 
WEAKENS SOME WHILE NEW TROUGHING SETS UP OVER THE ERN GULF WHERE 
SOME OF THE WEAK VORT CENTERS FINALLY ESCAPE THE MID LEVEL 
RIDGE. ON THE SURFACE DAY 5 THE REGION DOMINATED BY THE ATLC 
RIDGE AS WOULD BE EXPECTED THIS TIME OF YEAR. A 1029 MB CENTER 
LOCATED NEAR 33N49W ANCHORS THE RIDGE WITH THE AXIS N OF THE 
AREA ALONG 33N. SOME HINT OF TRPL WAVES ALONG 60W AND 82W WITH 
LITTLE CHANGE TO THE OVERALL WIND PATTERN.

WARNINGS...

ATLANTIC...NONE.

CARIBBEAN...NONE.

GULF OF MEXICO...NONE.

FORECASTER RRG