One product issued by NWS for: 42NM SW Mayaguez PR
Hazardous Weather Outlook
Hazardous Weather Outlook National Weather Service San Juan PR 336 AM AST Sun May 19 2024 AMZ711>745-PRZ001>013-200745- San Juan and Vicinity-Northeast-Southeast-Eastern Interior- North Central-Central Interior-Ponce and Vicinity-Northwest- Western Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques- The nearshore and off shore Atlantic and Caribbean Coastal Waters- 336 AM AST Sun May 19 2024 This Hazardous Weather Outlook is for portions of Puerto Rico. .DAY ONE...Today and Tonight .Lightning...Isolated thunderstorms possible across central and west Puerto Rico. Be aware of thunderstorms in your area and be prepared to take shelter. .Excessive Rainfall...Flooding of urban areas, roads,streams, and washes across central and west Puerto Rico. Isolated flash floods possible. .Excessive Heat...Heat index 108-111 degrees across southwest to northeast Puerto Rico. Heat exhaustion likely with prolonged exposure. Heat stroke possible.The rest of the coastal areas, the risk will remain limited with heat indices in the 102-107 Fahrenheit degrees. Heat exhaustion likely with prolonged exposure. Heat stroke possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday The heat threat will remain for at least Monday. An increase in the flooding and the lightning threat is forecast from Tuesday through Thursday. Therefore, ponding of waters and urban flooding is expected for that period. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$