000 AGXX40 KNHC 080458 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 130 AM EDT SAT APR 08 2006 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. TWO STRONG SHORTWAVES DROPPING SWD OVER THE UPPER MIDWEST AND CENTRAL PLAINS TONIGHT. THESE TWO ARE EXPECTED TO PHASE TOGETHER LATER TODAY. UPPER RIDGE FROM W CARIB NE TO 40N60W. ON THE SURFACE AN OLD COLD FRONT WAS OVER MID OCEAN NEAR 50W WITH A POLAR HIGH 1022 MB FOLLOWING NEAR 30N60W. A COLD FRONT WAS APPROACHING THE TEXAS COAST. BOTH SHORTWAVES PHASE TOGETHER DAY 1 AND MARCH TOWARD THE E COAST OF THE U.S. AN OPEN UPPER RIDGE HOLDS FIRM FROM THE NE CARIB NEWD. AND A LARGE UPPER TROUGH LIES OVER THE ERN ATLC. ON THE SURFACE THE GULF COLD FRONT WILL MOVE TO THE CENTRAL GULF WITH NLY WINDS 20 TO 25 KT BEHIND IT. THE OLD POLAR HIGH MOVES TO 30N50W MAINTAINING ELY TRADES OVER THE CARIB TO 20 KT AND SLY WINDS W OF 75W INCREASING TO 20 TO 25 KT. A FULL LATITUDE UPPER TROUGH MOVES OFF THE EASTERN SEABOARD DAY 2. THE AXIS OF THE TROUGH EXTENDS BACK ACROSS THE SE GULF. THE UPPER RIDGE HOLDS FROM THE NE CARIB NEWD WHILE THE UPPER TROUGH DIGS IN OVER THE ERN ATLC. THE GULF COLD FRONT MOVES ACROSS CENTRAL FL DAY 2. NLY WINDS TO 20 KT CONTINUE OVER THE GULF DAY 2 AND SLY WINDS AHEAD OF THE FRONT TO 20 KT W OF 70W. CARIB WINDS DECREASE SOME AS PRESSURE GRADIENT RELAXES. ATLC RIDGE MOVES TO MID OCEAN. OUTLOOK PERIOD... DAY 3 FINDS ENERGY SEPARATING IN THE MAJOR TROUGH ALONG THE E COAST. FOR OUR REGION THE SRN PORTION MOVES INTO THE WRN BAHAMAS DAY 3. UPPER RIDGING BUILDS OVER THE WRN GULF WHILE THE MID OCEAN RIDGE MOVES TO 60W. THE LARGE UPPER TROUGH OVER THE ERN ATLC REMAINS STATIONARY E OF 50W. THE COLD FRONT MOVES OFF THE SE FL COAST DAY 3. NE WINDS 25 KT AND GUSTY BEHIND THE FRONT OVER THE ATLC AS WEAK LOW PRES DEVELOPS OVER THE WRN BAHAMAS. GULF WINDS REMAIN GUSTY E OF 90W DAY 3. CARIB WINDS LIGHT TO MODERATE. UPPER TROUGHING CONTINUES OVER THE WRN BAHAMAS DAY 4 WITH LITTLE CHANGE TO THE OVERALL UPPER PATTERN. ON THE SURFACE THE WEAK LOW MOVES NE TO NEAR 30N70W DAY 4 WITH GUSTY NE WINDS CONTINUING W OF THE FRONT. LITTLE CHANGE ELSEWHERE. UPPER TROUGHING MOVES TO THE CENTRAL BAHAMAS DAY 5 AS STRONG SHORTWAVES MOVE EWD N OF 35N. UPPER RIDGE HOLDS ON OVER THE WRN GULF AS UPPER TROUGHING REMAINS OVER THE ERN ATLC E OF 45W. A CONTINUATION OF GUSTY NE WINDS W OF 70W DAY 5 AS THE COLD FRONT MOVES SLOWLY E. SURFACE RIDGE HOLDS FIRM ALONG THE ERN SEABOARD BACK TO THE WRN GULF. CARIB WINDS MOSTLY LIGHT TO MODERATE DAY 5. ATLC RIDGE OVER MID OCEAN WITH ELY TRADES 20 KT E OF 60W. WARNINGS... ATLANTIC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER RRG