Environment & Climate · World & National · North America

Extreme Heat Warning issued September 11 at 10:13AM 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...A portion of Puerto Rico. * WHEN...Until 5 PM AST this afternoon. * IMPACTS...Heat-related illnesses increase significantly during periods of very high heat indices or high temperatures. This extreme heat event