Right now
The most recent data we hold from HEAT GOV arrived 49 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert is in force until 8 September 2026, 21:00 UTC.
It is the strongest of the 15 detections recorded within 20 km of this point since 24 March 2026. The last comparable one was on 15 August 2026.
What the source measured
HEAT GOV reported: * WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. * WHERE...Portions of Puerto Rico (particularly across coastal and urban areas and lower-elevation valleys) and the U.S. Virgin Islands. * WHEN...From 10...
An estimated 574,478 people live within 50 km of this point.
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 70 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Our confidence | 70% |
| Coordinates | 18.1446, -66.5306 |
| Nearest City | Ponce (18 km) |
| Population Exposed | 574.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-08T14:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-08T10:00:00-04:00 |
| Expires | 2026-09-08T17:00:00-04:00 |
| AreaDesc | San Juan and Vicinity; Northeast; Southeast; Eastern Interior; North Central; Central Interior; Ponce and Vicinity; Northwest; Western Interior; Mayaguez and Vicinity; Southwest; Culebra; Vieques; St.Thomas...St. John.. and Adjacent Islands; St Croix |
| SenderName | NWS San Juan PR |
| ZonesUsedForCentroid | 6 |
| ZoneCount | 15 |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens near Ponce?
Calamity.live data shows a weather event with CalamityScore 41/100, near Ponce (Puerto Rico), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.