000 AGXX40 KNHC 020601 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 200 AM EDT SAT JUL 02 2011 SW N ATLC... A FRONTAL TROUGH EXTENDING FROM 31N72W TO 28N79W WILL GRADUALLY WASH OUT ALLOWING AN E TO W RIDGE...ALONG 28N E OF 74W THIS MORNING...TO BUILD W TO THE E COAST OF CONUS SUN NIGHT...BUT THEN SHIFT SLIGHTLY N TO ALONG 32N EARLY NEXT WEEK. ELY WINDS WELL S OF THE RIDGE...OVER WATERS S OF 24N...WILL CONTINUE AT 20 TO 25 KT ENHANCED SLIGHTLY TO THE E OF A NORTHERN EXTENSION OF A TROPICAL WAVE...CURRENTLY OVER HISPANIOLA...WHICH IN TURN WILL BE ENHANCED BY AN UPPER CYCLONE CURRENTLY OVER THE WINDWARD PASSAGE. THIS WILL SPREAD ABUNDANT TROPICAL MOISTURE NW ACROSS THE NW BAHAMAS AND THE FL STRAITS THROUGH THE WEEKEND. GUIDANCE HANGS ON TO SOME OF THE VORTICITY FROM JUST MENTIONED WAVE AND UPPER LOW INTERACTION WITH A TROUGH FROM 29N72W TO THE NW BAHAMAS MID WEEK. CARIBBEAN AND TROPICAL N ATLC W OF 55W... YESTERDAYS ASCAT PASSES INDICATE FRESH TO STRONG EASTERLY FLOW OVER MUCH OF THE CARIBBEAN. A TROPICAL WAVE OVER THE NW CARIBBEAN IS EXPECTED TO CONTINUE W THROUGH THE YUCATAN CHANNEL TODAY. ASSOCIATED CONVECTION HAS DIMINISHED CONSIDERABLY THE PAST FEW HOURS WITH ONLY A FEW SHOWERS REMAINING. ANOTHER TROPICAL WAVE ALONG 70W IS MOVING W AT 18 KT WHICH SHOULD MOVE IT W TO ALONG 77W SUNSET TODAY AND ALONG 85W SUN NIGHT WITH THE NORTHERN EXTENSION CONTINUING W THROUGH THE SOUTHERN GULF OF MEXICO. LIKELY SEE CONTINUED ENHANCEMENT OF CONVECTION OVER THE CARIBBEAN N OF 14N ALONG THE WAVE AS IT INTERACTS WITH AN UPPER TROUGH EXTENDING N TO S ALONG 77W. THE SOUTHERN EXTENSION OF THE WAVE WILL LOSE IDENTITY TO THE W OF THE UPPER TROUGH AS IT MOVES INTO THE MONSOON GYRE OVER CENTRAL AMERICA. THE E TRADES WILL DIMINISH SOME EARLY NEXT WEEK THEN INCREASE AGAIN MID WEEK. GULF OF MEXICO... THE WESTERN EXTENSION OF A WEAKENING SURFACE TROUGH EXTENDS W ALONG 27N TO THE E OF 85W WITH THE ASSOCIATED CONVECTION IN A WEAKENING TREND THIS MORNING AND CONFINED TO THE EXTREME NEAR WATERS. JUST TO THE W...LIES A SURFACE HIGH PRES CENTER AT 27N88W WHICH IS EXPECTED TO SHIFT W AND MEANDER THROUGH 48W ALONG A RIDGE AXIS THAT WILL EXTEND NE TO SW OVER THE NORTHERN PORTION. APPROACHING SHORTWAVES ARE EXPECTED TO STALL N OF THE GULF THROUGH THE PERIOD. THE HIGH CENTER WILL SHIFT BACK E OVER THE N CENTRAL GULF WATERS MID WEEK. THE WEAK PRES GRADIENT IS MAINTAINING LIGHT WINDS AND LOW SEAS ACROSS THE GULF WITH THE EXCEPTION OF THE SW GULF ZONE...WHERE THE GRADIENT IS A LITTLE TIGHTER. THE NORTHERN EXTENSION OF TWO TROPICAL WAVES WILL MOVE THROUGH THE SW WATERS WITH THE FIRST WAVE ARRIVING TONIGHT AND THE SECOND WAVE ARRIVING TUE. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER NELSON 000 AGXX40 KNHC 020601 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 200 AM EDT SAT JUL 02 2011 SW N ATLC... A FRONTAL TROUGH EXTENDING FROM 31N72W TO 28N79W WILL GRADUALLY WASH OUT ALLOWING AN E TO W RIDGE...ALONG 28N E OF 74W THIS MORNING...TO BUILD W TO THE E COAST OF CONUS SUN NIGHT...BUT THEN SHIFT SLIGHTLY N TO ALONG 32N EARLY NEXT WEEK. ELY WINDS WELL S OF THE RIDGE...OVER WATERS S OF 24N...WILL CONTINUE AT 20 TO 25 KT ENHANCED SLIGHTLY TO THE E OF A NORTHERN EXTENSION OF A TROPICAL WAVE...CURRENTLY OVER HISPANIOLA...WHICH IN TURN WILL BE ENHANCED BY AN UPPER CYCLONE CURRENTLY OVER THE WINDWARD PASSAGE. THIS WILL SPREAD ABUNDANT TROPICAL MOISTURE NW ACROSS THE NW BAHAMAS AND THE FL STRAITS THROUGH THE WEEKEND. GUIDANCE HANGS ON TO SOME OF THE VORTICITY FROM JUST MENTIONED WAVE AND UPPER LOW INTERACTION WITH A TROUGH FROM 29N72W TO THE NW BAHAMAS MID WEEK. CARIBBEAN AND TROPICAL N ATLC W OF 55W... YESTERDAYS ASCAT PASSES INDICATE FRESH TO STRONG EASTERLY FLOW OVER MUCH OF THE CARIBBEAN. A TROPICAL WAVE OVER THE NW CARIBBEAN IS EXPECTED TO CONTINUE W THROUGH THE YUCATAN CHANNEL TODAY. ASSOCIATED CONVECTION HAS DIMINISHED CONSIDERABLY THE PAST FEW HOURS WITH ONLY A FEW SHOWERS REMAINING. ANOTHER TROPICAL WAVE ALONG 70W IS MOVING W AT 18 KT WHICH SHOULD MOVE IT W TO ALONG 77W SUNSET TODAY AND ALONG 85W SUN NIGHT WITH THE NORTHERN EXTENSION CONTINUING W THROUGH THE SOUTHERN GULF OF MEXICO. LIKELY SEE CONTINUED ENHANCEMENT OF CONVECTION OVER THE CARIBBEAN N OF 14N ALONG THE WAVE AS IT INTERACTS WITH AN UPPER TROUGH EXTENDING N TO S ALONG 77W. THE SOUTHERN EXTENSION OF THE WAVE WILL LOSE IDENTITY TO THE W OF THE UPPER TROUGH AS IT MOVES INTO THE MONSOON GYRE OVER CENTRAL AMERICA. THE E TRADES WILL DIMINISH SOME EARLY NEXT WEEK THEN INCREASE AGAIN MID WEEK. GULF OF MEXICO... THE WESTERN EXTENSION OF A WEAKENING SURFACE TROUGH EXTENDS W ALONG 27N TO THE E OF 85W WITH THE ASSOCIATED CONVECTION IN A WEAKENING TREND THIS MORNING AND CONFINED TO THE EXTREME NEAR WATERS. JUST TO THE W...LIES A SURFACE HIGH PRES CENTER AT 27N88W WHICH IS EXPECTED TO SHIFT W AND MEANDER THROUGH 48W ALONG A RIDGE AXIS THAT WILL EXTEND NE TO SW OVER THE NORTHERN PORTION. APPROACHING SHORTWAVES ARE EXPECTED TO STALL N OF THE GULF THROUGH THE PERIOD. THE HIGH CENTER WILL SHIFT BACK E OVER THE N CENTRAL GULF WATERS MID WEEK. THE WEAK PRES GRADIENT IS MAINTAINING LIGHT WINDS AND LOW SEAS ACROSS THE GULF WITH THE EXCEPTION OF THE SW GULF ZONE...WHERE THE GRADIENT IS A LITTLE TIGHTER. THE NORTHERN EXTENSION OF TWO TROPICAL WAVES WILL MOVE THROUGH THE SW WATERS WITH THE FIRST WAVE ARRIVING TONIGHT AND THE SECOND WAVE ARRIVING TUE. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER NELSON