Right now
The most recent data we hold from NOAA arrived 6 minutes 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 24 May 2026 at 07:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 82 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 24 at 1:45AM CDT until May 24 at 2:45AM CDT by NWS New Orleans LA
An estimated 866,520 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 5, 2026 · score 48 · 9.8 km
- June 19, 2026 · score 72 · 13.3 km
- March 16, 2026 · score 48 · 13.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 29.9095, -89.8485 |
| Nearest City | Chalmette (12 km) |
| Population Exposed | 866.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-24T06:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.fe07143fa33efbf7f95c7cfe751896fd |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Lake Pontchartrain; Lake Borgne; Lake Salvador and Lake Cataouatche; Barataria Bay; Mississippi Sound; Lake Borgne; Breton Sound; Chandeleur Sound; Barataria Bay; Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM; Coastal Waters from Boothville LA to Southwest Pass of the Mississippi River out 20 nm; Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM; Coastal waters from Pascagoula Mississippi to Stake Island Louisiana out 20 to 60 NM |
| Headline | Special Marine Warning issued May 24 at 1:45AM CDT until May 24 at 2:45AM CDT by NWS New Orleans LA |
| Expires | 2026-05-24T02:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fe07143fa33efbf7f95c7cfe751896fdbeb3138d.001.1","noaa_urn:oid:2.49.0.1.840.0.b628fb0abc2e793b84d54044d48687cf73cc3b82.001.1","noaa_urn:oid:2.49.0.1.840.0.e0609d890d757aa7751ed6f51fe5612c2ad5522c.001.1"] |
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 Chalmette?
Calamity.live data shows a weather event with CalamityScore 48/100, near Chalmette (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.