This alert expired on 4 September 2026 at 14:15 UTC. It is kept here as a record.
It is the 67th strongest of the 139 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 4 at 7:39AM CDT until September 4 at 9:15AM CDT by NWS New Orleans LA
An estimated 868,450 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 11, 2026 · score 48 · 4.0 km
- June 18, 2026 · score 72 · 4.7 km
- July 5, 2026 · score 48 · 5.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 81 % 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 | 81% |
| Coordinates | 29.9920, -90.2070 |
| Nearest City | Kenner (3 km) |
| Population Exposed | 868.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T12:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1be321bc63c7ac504199a61008955f236afecce4.002.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Jefferson, LA |
| Headline | Flash Flood Warning issued September 4 at 7:39AM CDT until September 4 at 9:15AM CDT by NWS New Orleans LA |
| Expires | 2026-09-04T09:15:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
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 Kenner?
Calamity.live data shows a weather event with CalamityScore 41/100, near Kenner (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.