Atmospheric and oceanic conditions appear favorable for additional rapid strengthening for the next 24 h and possibly longer. This is reflected in the intensity forecast, which now calls for Maria to become a category 4 hurricane in 12 h and reach a possibly conservative peak intensity of 130 kt in about 36 h. From 72-120 h, land interaction and less favorable upper-level winds are expected to cause some weakening. On top of these general trends, there is also the possibility that eyewall replacement cycles could occur that would affect the intensity. However, Maria is likely to maintain category 3 to 4 intensity through the forecast period. KEY MESSAGES: 1. Maria will affect portions of the Leeward Islands and the British and U.S. Virgin Islands as an extremely dangerous major hurricane during the next couple of days, and hurricane warnings are in effect for many of these islands. 2. Maria is likely to affect Puerto Rico as an extremely dangerous major hurricane, and a hurricane watch is in effect for that island. A hurricane warning will likely be issued later today. 3. The potential for a life-threatening storm surge, accompanied by large and destructive waves, has increased for the Leeward Islands, the Virgin Islands, and Puerto Rico. 4. Life-threatening flash floods and mudslides from heavy rainfall are expected across the Leeward Islands, including Puerto Rico and the U.S. and British Virgin Islands. FORECAST POSITIONS AND MAX WINDS INIT 18/1500Z 14.7N 60.1W 105 KT 120 MPH 12H 19/0000Z 15.1N 61.2W 115 KT 130 MPH 24H 19/1200Z 15.9N 62.6W 125 KT 145 MPH 36H 20/0000Z 16.8N 64.1W 130 KT 150 MPH 48H 20/1200Z 17.6N 65.5W 130 KT 150 MPH 72H 21/1200Z 19.5N 68.5W 125 KT 145 MPH 96H 22/1200Z 21.5N 71.0W 120 KT 140 MPH 120H 23/1200Z 24.0N 72.5W 110 KT 125 MPH
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