Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
This alert is in force until 7 September 2026, 20:15 UTC.
It is the 2nd strongest of the 24 detections recorded within 20 km of this point since 18 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 7 at 1:43PM AST until September 7 at 4:15PM AST by NWS San Juan PR
An estimated 1,284,946 people live within 50 km of this point.
Nearby, since 18 March 2026
- June 29, 2026 · score 48 · 13.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 86 % 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) | 46 / 100 |
| Our confidence | 86% |
| Coordinates | 18.4272, -66.3933 |
| Nearest City | Vega Baja (1 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-07T17:43:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a9ddd130fe7c4912f1032bd07a7f608321f5c6fe.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Vega Baja, PR |
| Headline | Flash Flood Warning issued September 7 at 1:43PM AST until September 7 at 4:15PM AST by NWS San Juan PR |
| Expires | 2026-09-07T16:15:00-04:00 |
| SenderName | NWS San Juan PR |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 1 WNW Vega Baja |
| Iem County | Vega Baja |
| Iem State | PR |
| Iem Wfo | JSJ |
| Iem Remark | Broadcast media reported flooding along PR-2 in Barrio Algarrobo, Vega Baja. Runoff flowing from PR-155 crosses the area near Fuente de Luz Cemetery before reaching PR-2, resulting in floodwaters on t |
| MergedSources | [{"id":"iem_F_18.450_-66.410_1788804000000","source":"iem","severity":"low","severityValue":25,"timestamp":1788804000000,"latitude":18.45,"longitude":-66.41}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 Vega Baja?
Calamity.live data shows a weather event with CalamityScore 46/100, near Vega Baja (Puerto Rico), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.