000
AGXX40 KNHC 210559
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EST MON JAN 21 2008
 
MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

STRONG UPPER TROUGH EXITING THE NE CONUS TONIGHT WITH A EQUALLY 
STRONG SW AND W MID LEVEL FLOW FOLLOWING W OF 80W. MID LEVEL 
RIDGE OVER ATLC FROM CUBA TO 45W STATIONARY BUT BEING ERODED BY 
STRONG MID LEVEL FLOW ON N SIDE. ON THE SURFACE TONIGHT TWO 
LARGE HIGH PRES CENTERS DOMINATE THE REGION. ONE OVER THE ATLC 
NEAR 30N46W THE OTHER OVER THE SE CONUS. BOTH PRODUCING STRONG 
NE WINDS OVER MOST OF THE REGION.

LATER DAY 1 STRONG ZONAL MID LEVEL FLOW WILL CONTINUE. NEXT 
SHORTWAVE DROPPING S INTO NRN PLAINS. ON THE SURFACE LATER DAY 1 
COLD FRONT MOVING S OVER MID ATLC TO 30N E OF 60W WITH NLY WINDS 
20 TO 25 KT. OLD POLAR AIRMASS OVER SE COAST MOVING SLOWLY EWD. 
STRONG WINDS TO 25 KT EXCEPT FOR NEAR RIDGE CENTER N OF 25N 
BETWEEN 40W AND 60W. 

FOR DAY 2 STRONG SHORTWAVE MOVING SE OVER GREATLAKES TIGHTENING 
WLY FLOW S OF 40N TO 25N. ON THE SURFACE DAY 2 OLD POLAR AIRMASS 
CONTINUES EWD INTO ATLC TO ALONG 60W. WINDS DECREASING W OF 70W 
EXCEPT FOR CARIB WHERE 20 KT WINDS CONTINUE E OF 80W. NEXT COLD 
FRONT MOVES TO SE TX BUT RELATIVELY WEAK. 

OUTLOOK PERIOD...

FOR DAY 3 DOUBLE BARRELL SHORTWAVES MOVING SE OVER NE PORTION OF 
CONUS WITH WLY FLOW PERSISTING S OF 35N. ON THE SURFACE DAY 3 
CYCLOGENESIS ALONG 70W N OF AREA WILL INCREASE SW WINDS N OF 30N 
W OF 60W TO 20 KT. GULF WINDS MOSTLY LIGHT BUT INCREASE TO 15 KT 
BEHIND WEAK COLD FRONT THAT MOVES TO NW GULF. CARIB WINDS 15 TO 
20 KT. ATLC WINDS E OF 60W MOSTLY 20 KT SLIGHTLY HIGHER N OF 28N 
E OF 50W.

FOR DAY 4 UPPER TROUGH DIVES SE INTO MID ATLC REGION TIGHTENING 
MID LEVEL FLOW OVER SE CONUS. MID LEVEL RIDGING BUILDS ALONG 
100W OVER PLAINS. ON THE SURFACE DAY 4 NEXT POLAR AIRMASS 
STRONGER WITH NE WINDS 25 TO 30 KT OVER NRN GULF BEHIND A COLD 
FRONT THAT MOVES MOSTLY EWD IN THE STRONG ZONAL FLOW ALOFT. 
MOSTLY LIGHT TO MODERATE WINDS ELSEWHERE. ATLC WINDS DECREASE N 
OF 28N E OF 50W.

FOR DAY 5 STRONG UPPER TROUGH BARRELS IT'S WAY OFF NE COAST TO 
ALONG 65W. MID LEVEL RIDGING AMPLIFIES NWD AND MOVES TO 90W. ON 
THE SURFACE DAY 5 SURFACE RIDGE STRENGTHENS UNDER RIDGE ALOFT 
AND MAINTAINS GUSTY WINDS TO 25 KT W OF A COLD FRONT E OF 70W 
WWD TO 95W. CARIB WINDS 20 TO 25 KT. ATLC E OF 60W 10 TO 15 KT.

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER RRG