000 AGXX40 KNHC 270520 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 130 AM EDT SUN MAY 27 2007 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. TWO MID LEVEL RIDGES DOMINATE THE REGION TONIGHT. ONE OVER THE E CENTRAL ATLC 35N35W TO 20N55W..THE OTHER OVER THE SE CONUS. WEAK IMPULSES SLIPPING BY IN WHATS LEFT OF THE SRN BRANCH OF THE WESTERLIES. THESE LOCATED E OF THE BAHAMAS AND S FL AND BACK OVER THE NW GULF. STRONG SHORTWAVE IN NRN BRANCH DIVING SE OVER NRN PLAINS TONIGHT. ON THE SURFACE TONIGHT A 1025 MB HIGH NEAR 31N72W WITH A STATIONARY BOUNDARY FROM 31N54W TO 20N70W. WEAK LOW IN SW CARIB NEAR 12N80W. LATER DAY 1 ANOTHER SHORTWAVE MOVES TO THE SRN PLAINS IN THE SRN BRANCH WHILE WEAK IMPULSES CLUTTER THE SW ATLC NAVIGATING AROUND THE MID LEVEL RIDGES. ON THE SURFACE LATER DAY 1 PERSISTENT TROUGHING CONTINUES E OF THE BAHAMAS BACK TO THE SW CARIB WITH THE GFS HINTING AT SOME SORT OF DEVELOPMENT. OTHERWISE THE ATLC RIDGE DOMINATES E OF 60W AND A CONTINENTAL HIGH SITS OFF THE SE COAST. FOR DAY 2 THE STRONG SHORTWAVE IN THE NRN BRANCH HEADS EWD AND WILL HAVE NO INFLUENCE S OF 35N. GFS MODEL SHOWS THE WEAK IMPULSES JOINING FORCES AROUND A CENTER NEAR 30N67W. THE SHORTWAVE IN THE SRN BRANCH MOVES SLOWLY E ALONG 95W. ON THE SURFACE DAY 2 WEAK LOW PRES FORMS NEAR 27N63W WITH WINDS TO 20 KT. WEAK CARIB LOW DRIFTS WNW WITH LIGHT WINDS. STRONGEST WINDS IN ELY TRADES S OF 20N E OF 60W AT 20 KT. OUTLOOK PERIOD... FOR DAY 3 MID LEVEL LOW NEAR 30N67W FEELS AFFECT OF STRONG SHORTWAVE TO N AND LIFTS NE. SHORTWAVE ALONG 95W BEGINS TO BE INFLUENCED BY STRONG SHORTWAVE EXITING NRN ROCKIES. ON THE SURFACE DAY 3 GFS SHOWS LOW AT 31N63W DEEPENING SOME TO 1009 MB WITH WINDS TO 25 KT. NOT UNREASONABLE. CARIB LOW OPENS TO TROUGH ALONG 80W. MODERATE WINDS E OF 80W AND LIGHT W OF 80W. FOR DAY 4 STILL A PROGRESSIVE PATTERN ALOFT WITH NRN BRANCH ACTIVE WITH STRONG SHORTWAVES..ONE ALONG 50W WITH NWLY FLOW DIVING SE TO 30N..AND NEW SHORTWAVE INTERING NRN PLAINS. SRN BRANCH RE-EMERGES WITH WEAK SHORTWAVE ALONG 93W BUTTING UP AGAINST MID LEVEL RIDGE ALONG 78W. ON THE SURFACE DAY 4 ATLC LOW CHANGES LITTLE AS IT MOVES SLOWLY TO 31N58W WITH WINDS TO 25 KT. WEAK TROUGHING BACK TO SE BAHAMAS AND ANOTHER TROUGH OVER THE NW CARIB DRIFTING NW. LITTLE CHANGE TO WINDS. FOR DAY 5 SRN BRANCH PHASING IN WITH NRN BRANCH WILL GET WEAK SHORTWAVES MOVING FASTER. THUS SHORTWAVE OVER GULF MOVES TO 90W. FLAT MID LEVEL RIDGE LIES OVER REGION ALONG 20N SHOULD KEEP WIND SHEAR TO A MINIMUM FOR POSSIBLE FUTURE TROPICAL DEVELOPMENT. ON THE SURFACE DAY 5 JUST CAN'T GET RID OF ATLC LOW WHICH MOVES E TO 31N50W STILL WITH WINDS TO 25 KT. WEAK TROUGHING OVER CENTRAL BAHAMAS AND NW CARIB WITH LIGHT TO MODERATE WINDS. STRONGEST WINDS REMAIN OVER ATLC S OF 15N AND CARIB E OF 75W. GULF WINDS LIGHT TO MODERATE. WARNINGS... ATLANTIC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER RRG