Environment & Climate · World & National · North America

Extreme Heat Warning issued September 11 at 2:11AM AST until September 11 at 5:00PM AST by NWS San Juan PR

* WHAT...This level of heat can affect anyone without effective cooling and/or adequate hydration. * WHERE...Portions of Puerto Rico, particularly across coastal and urban areas and lower-elevation valleys. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...Heat-related illnesses increase signific