National Weather Service Announces Heat Alerts Across USVI, Puerto Rico

The National Weather Service in San Juan, Puerto Rico, has issued heat warnings and advisories for Puerto Rico and the U.S. Virgin Islands, citing dangerously high temperatures. Additionally, showers and thunderstorms are possible as a tropical wave moves through the region.

Excessive Heat Alerts in Effect

An “Extreme Heat Warning” is in effect for all lower-elevation and urban areas of Puerto Rico, and a “Heat Advisory” is in effect for Vieques, Culebra, and the U.S. Virgin Islands on Monday from 10 a.m. to 4 p.m., according to an update from the NWS.

According to information from the National Integrated Heat Health Information System, “an Extreme Heat Warning is issued when extremely dangerous heat conditions are expected or occurring, and a Heat Advisory is issued for dangerous heat conditions that are not expected to reach warning criteria.”

The temperature alerts are based on factors including the “heat index,” which is a measure of how hot it feels to the human body when relative humidity is combined with the actual air temperature.

Residents and visitors across the region are encouraged to remain hydrated and as cool as possible to prevent heat-related illnesses.

“This level of heat can affect those without adequate cooling or hydration, impacting vulnerable populations and infrastructure,” the NWS warned.