Right now
The most recent data we hold from NOAA arrived 2 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 7 September 2026 at 16:15 UTC. It is kept here as a record.
It is the 12th strongest of the 13 detections recorded within 20 km of this point since 8 May 2026. The last comparable one was on 7 July 2026.
What the source measured
NOAA reported: Special Marine Warning issued September 7 at 10:16AM CDT until September 7 at 11:15AM CDT by NWS New Orleans LA
Nearby, since 8 May 2026
- June 25, 2026 · score 39 · 14.5 km
- September 7, 2026 · score 28 · 17.8 km
- July 7, 2026 · score 22 · 19.3 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 66 % 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) | 16 / 100 |
| Our confidence | 66% |
| Coordinates | 29.6540, -89.5060 |
| Nearest City | Chalmette (55 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-07T15:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b7840e85bd47ab3a08f81917e0d71da7946f75f8.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Breton Sound; Chandeleur Sound; Coastal Waters from Boothville LA to Southwest Pass of the Mississippi River out 20 nm |
| Headline | Special Marine Warning issued September 7 at 10:16AM CDT until September 7 at 11:15AM CDT by NWS New Orleans LA |
| Expires | 2026-09-07T11:15:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| Heat Gov Event | Heat Advisory |
| Heat Gov Urgency | Expected |
| Heat Gov Certainty | Likely |
| Heat Gov Onset | 2026-09-07T11:00:00-05:00 |
| Heat Gov Expires | 2026-09-07T19:00:00-05:00 |
| Heat Gov AreaDesc | Lower St. Bernard |
| Heat Gov SenderName | NWS New Orleans LA |
| Heat Gov ZonesUsedForCentroid | 1 |
| Heat Gov ZoneCount | 1 |
| MergedSources | [{"id":"heat_gov_29.8_-89.5_heat_advisory_2026-09-07","source":"heat_gov","severity":"medium","severityValue":50,"timestamp":1788796800000,"latitude":29.813771915613806,"longitude":-89.49147034702158}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.