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NHC must be reading your posts. Just kidding. This is 13 minutes old. MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 235 PM EDT SAT JUN 23 2012 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... ELONGATED MONSOONAL LIKE CIRCULATION PERSISTING ACROSS THE GULF THIS MORNING...WITH MAJORITY OF WEATHER AND WIND CONFINED TO E SIDE OF CIRCULATION. STRONG SLY FLOW ON THIS E SIDE WAS VERIFIED BY SEVERAL SHIP OBS AND WITH BUOY 42003 FLUCTUATING MID 20'S TO BRIEF MINIMAL GALE CONDITIONS...AND SEAS UP TO 15 FT. BASED ON THIS AND VERY UNSTABLE ENVIRONMENT ACROSS THIS AREA...AND WITH GLOBAL MODELS IN AGREEMENT ON GALE FORCE WINDS IN Boundary Layer...HAVE ISSUED GALE WARNING FOR THE E SEMICIRCLE OF LOW THIS AFTERNOON...AND SPREADING ACROSS N QUADRANT THIS EVENING. AS WOULD BE EXPECTED WITH THIS MONSOONAL TYPE EVOLUTION...GALE FORCE OR STRONGEST WINDS INITIALLY WILL REMAIN ON PERIPHERY OF THE CIRCULATION...AND GRADUALLY FILL IN ACROSS N AND NW QUADS AS MOISTURE WRAPS IN TOWARD THE CENTER. LLVL SWIRL CLEARLY EVIDENT IN VIS IMAGERY THIS AFTERNOON WILL LIKELY BE SHED TO THE SW WITH ANOTHER CENTER LIKELY TO BECOME THE DOMINANT CENTER TO THE NE OF THIS SWIRL...AND CLOSER TO THE CONVECTION. ALTHOUGH ALL THE GLOBAL MODELS SHOW ELONGATED STRETCHING OF MOISTURE FIELD OF THIS SYSTEM OVER THE NEXT 48 HOURS...ONLY THE GFS REMAINS ADAMANT IN SHEARING OUT SIGNIFICANT LLVL VORTICITY TO THE NE...WITH GFS ENSEMBLE MEMBERS FROM THE 00Z RUN PRETTY EVENLY DISTRIBUTED ALL ALONG THE MOISTURE AXIS BY 96 HOURS. HAVE THUS CREATED WIND AND PRES GRIDS STRONGLY WEIGHTED ON ECMWF...AND USED A 50-50 BLEND OF ECWAVE AND WWIII FOR SEAS. IT MAY TAKE A FULL 48 HOURS FOR THIS SYSTEM TO ATTAIN A TRULY TROPICAL TC APPEARANCE...BUT GALE FORCE OR NEAR GALE WINDS...WITH SHOWERS SQUALLS AND TSTMS WILL CONTINUE TO DOMINATE THE E AND NE PORTION OF THIS SYSTEM FOR THE NEXT 24-48 HOURS AND SPREAD ACROSS THE NE AND N CENTRAL GULF COASTAL WATERS AND COASTAL ZONES. BUOY 42003 NOW REPORTING 14 FT SEAS AT 9 SECONDS WHICH WILL PROPAGATE INTO THE N CENTRAL GULF COASTLINES...AND COMBINE WITH STRONG E TO SE WIND FLOW FOR HIGH WATER LEVELS LEADING TO SOME COASTAL FLOODING AND EROSION. INTERESTS ALONG THE UNITED STATES GULF COAST SHOULD MONITOR THE PROGRESS OF THIS LOW THROUGH THE WEEKEND. |