Weather Warnings for Puerto Rico

Issued by the National Weather Service

Current watches, warnings, and advisories for Puerto Rico
Alerts Updated: June 19, 2026, 1:30 pm  UTC


Heat Advisory issued June 19 at 7:14AM AST until June 19 at 6:00PM AST by NWS San Juan PR

Summary: * WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...Lower elevations of Puerto Rico and the US Virgin Islands. * WHEN...From 9 AM until 6 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Severity:  Moderate    Effective:  June 19, 2026, 7:14 am      Expires:  June 19, 2026, 6:00 pm
Area:  San Juan and Vicinity; Northeast; Southeast; Eastern Interior; North Central; Ponce and Vicinity; Northwest; Mayaguez and Vicinity; Southwest; Culebra; Vieques; St.Thomas...St. John.. and Adjacent Islands; St Croix


Red Flag Warning issued June 19 at 6:51AM AST until June 19 at 4:00PM AST by NWS San Juan PR

Summary: ...RED FLAG WARNING IN EFFECT FOR PORTIONS OF SOUTHERN AND WESTERN PUERTO RICO, VIEQUES AND ST CROIX... .A RED FLAG WARNING has been issued for today across portions of southern and western Puerto Rico, Vieques and St Croix, where the greatest fire danger is expected from late morning through the afternoon. Expect breezy east to east-southeast winds and strong gusts, as well as low relative humidities, creating a high risk of fire weather conditions. These conditions combined with critically dry fuels will promote the rapid spreading of any fire that develops. * AFFECTED AREA...The coastal plains and hills of southern and western Puerto Rico, Vieques and St Croix. * WIND...East to east-southeast at 15 to 23 mph, with stronger gusts around 30 mph. * HUMIDITY...Relative humidity values from the mid 40 to low 50s. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.
Severity:  Severe    Effective:  June 19, 2026, 6:51 am      Expires:  June 19, 2026, 4:00 pm
Area:  Southeast Coastal Plains; Southern Hills; West Coast; Vieques; Southwest Coastal Plains and Mona Island; Saint Croix