000 ABNT20 KNHC 042335 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 800 PM EDT SUN JUL 4 2010 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A SMALL BUT WELL ORGANIZED LOW PRESSURE SYSTEM IS LOCATED ABOUT 125 MILES SOUTH-SOUTHEAST OF THE CENTRAL LOUISIANA COAST. THIS LOW IS EXPECTED TO MOVE NORTHWARD AT 5 TO 10 MPH OVER THE NEXT 12 HOURS OR SO...THEN TURN NORTHWESTWARD AFTER THAT. ENVIRONMENTAL CONDITIONS ARE ONLY MARGINALLY CONDUCIVE FOR DEVELOPMENT...AND THERE IS A LOW CHANCE...20 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE BEFORE IT MOVES INLAND BY MONDAY EVENING. A VIGOROUS TROPICAL DISTURBANCE LOCATED OVER THE NORTHWESTERN CARIBBEAN SEA IS BECOMING BETTER ORGANIZED. ALTHOUGH THERE DOES NOT APPEAR TO BE A CLOSED SURFACE CIRCULATION AT THIS TIME...NEARBY SHIP AND BUOY OBSERVATIONS INDICATED WINDS OF TROPICAL-STORM-FORCE BRIEFLY OCCURRED IN ASSOCIATION WITH THIS SYSTEM DURING THE PAST FEW HOURS. ENVIRONMENTAL CONDITIONS ARE CONDUCIVE FOR DEVELOPMENT OF THIS DISTURBANCE AS IT MOVES GENERALLY WEST-NORTHWESTWARD AT 10 TO 15 MPH...AND A TROPICAL DEPRESSION COULD DEVELOP DURING THE NEXT COUPLE OF DAYS. THERE IS A MEDIUM CHANCE...50 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS WILL BE POSSIBLE OVER GRAND CAYMAN ISLAND AND MUCH OF THE NORTHWESTERN CARIBBEAN SEA OVER THE NEXT DAY OR SO. A BROAD TROUGH OF LOW PRESSURE LOCATED ABOUT 150 MILES NORTHEAST OF THE BAHAMAS IS PRODUCING A LARGE AREA OF CLOUDINESS AND SHOWERS. THIS SYSTEM IS CURRENTLY MOVING EASTWARD AT 10 TO 15 MPH...BUT IS EXPECTED TO GRADUALLY SLOW DOWN AND POSSIBLY BECOME STATIONARY EAST OF THE BAHAMAS. UPPER-LEVEL WINDS ARE ONLY MARGINALLY CONDUCIVE FOR DEVELOPMENT AND THERE IS A LOW CHANCE...10 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. AN AREA OF DISTURBED WEATHER APPROACHING THE LESSER ANTILLES WILL BRING LOCALLY HEAVY RAINFALL AND GUSTY WINDS TO THE LEEWARD AND NORTHERN WINDWARD ISLANDS...THE VIRGIN ISLANDS...AND PUERTO RICO DURING THE NEXT COUPLE OF DAYS. ENVIRONMENTAL CONDITIONS COULD ALLOW FOR SOME SLOW DEVELOPMENT OF THIS DISTURBANCE AS IT MOVES WEST-NORTHWESTWARD AT ABOUT 15 MPH. THERE IS A LOW CHANCE...20 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER CANGIALOSI/STEWART