000 AGXX40 KNHC 050604 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 130 AM EST FRI JAN 05 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. REMNANTS OF STRONG UPPER TROUGH EXITING QUICKLY OVER MID ATLC TONIGHT AS MID LEVEL FLOW BECOMES STRONGLY ZONAL. WEAK EMBEDDED SHORTWAVES ALONG 78W AND BACK OVER CENTRAL PLAINS ALONG 95W. ON THE SURFACE TONIGHT AN OLD COLD FRONT EXTENDS FROM 31N48W TO PUERTO RICO THEN A DISSIPATING STATIONARY FRONT OVER THE CENTRAL CARIB. OLD ARCTIC AIRMASS MOVING TO SE COAST TONIGHT STILL RESPONSIBLE FOR STRONG NE WINDS W OF FRONT WWD TO 90W AND OVER CARIB. LATER DAY 1 WEAK SHORTWAVE MOVES TO 70W WHILE NEXT ONE MOVES TO 90W. ON THE SURFACE LATER DAY 1 ARCTIC AIRMASS WEAKENING AS IT MOVES OVER ATLC WATERS BUT STILL PRODUCING NE TO E WINDS 20 TO 25 KT. GULF WINDS DECREASE TO 15 TO 20 KT. CARIB WINDS REMAIN STRONG. FOR DAY 2 FIRST SHORTWAVE MOVES SE TO 58W WHILE SECOND ONE MOVES OFF SE COAST TO 72W. MID LEVEL RIDGING BUILDING ALONG 88W WHILE MID LEVEL FLOW BECOMES SWLY W OF 90W IN ADVANCE OF STRONG TROUGH OVER W COAST. ON THE SURFACE DAY 2 OLD ARCTIC AIRMASS CONTINUES EWD OVER ATLC WITH WINDS DECREASING TO 20 KT S OF 25N AND OVER CARIB. RETURN FLOW SETS UP W OF 90W OVER GULF. OUTLOOK PERIOD... FOR DAY 3 FIRST SHORTWAVE MOVES TO 48W WHILE SECOND ONE AMPLIFIES SOME WITH ADDITIONAL COLD AIR ALONG 65W. MID LEVEL RIDGING ALONG ERN SEABOARD AS STRONG SWLY FLOW AT MID LEVELS SETS UP OVER PLAINS. ON THE SURFACE DAY 3 RETURN FLOW STRENGTHENING AS PRESSURES FALL OVER PLAINS. SE TO S WINDS 20 KT W OF 90W. CARIB WINDS MOSTLY 15 TO 20 KT. ATLC WINDS 20 TO 25 KT N OF 28N BETWEEN 40W AND 60W WHERE GRADIENT TIGHTENS. FOR DAY 4 FIRST SHORTWAVE WEAKENING E OF 50W WHILE SECOND SHORTWAVE CLOSES OFF ALONG 60W NEAR 24N. MID LEVEL RIDGING SHIFTS OFF SE COAST AS STRONG UPPER TROUGH MOVES INTO CENTRAL PLAINS. ON THE SURFACE DAY 4 WEAK TROUGHING SETS UP OVER MID ATLC IN RESPONSE TO SECOND SHORTWAVE. GRADIENT OVER ATLC ENOUGH FOR 20 TO 25 KT WINDS BETWEEN TROUGH AND OLD RIDGE OVER BAHAMAS AND N OF 28N. NEXT COLD FRONT MOVES TO TX GULF COAST WITH WINDS TO 20 KT. FOR DAY 5 CLOSED OFF MID LEVEL LOW CENTER EMBEDDED IN LARGE MID LEVEL RIDGE DRIFTING E TO NEAR 24N55W. STRONG MID LEVEL TROUGH OVER PLAINS MOVES ENE TO MID ATLC AREA WITH WEAKENING MID LEVEL RIDGE HOLDING FIRM OVER SRN GULF AND BAHAMAS. ON THE SURFACE DAY 5 WEAK COLD FRONT MOVES TO SE GULF WITH 1023 MB HIGH FOLLOWING OVER N GULF COAST. WINDS OVER GULF 15 KT. CARIB WINDS WEAKEN TO 10 TO 15 KT AS GRADIENT DECREASES. TROUGHING OVER ATLC CONTINUES FROM 28N50W SW TO 22N62W. ELY WINDS 20 TO 30 KT CONTINUE N OF 28N BETWEEN 48W AND 65W. REMAINDER OF ATLC 10 TO 15 KT. WARNINGS... ATLANTIC... NONE. CARIBBEAN... GALE WARNING... GULF OF MEXICO... NONE. FORECASTER RRG