This alert expired on 9 May 2026 at 14:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 62 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 9 at 8:43AM CDT until May 9 at 9:00AM CDT by NWS New Orleans LA
An estimated 232,319 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 20, 2026 · score 43 · 5.0 km
- May 22, 2026 · score 43 · 7.4 km
- May 24, 2026 · score 43 · 7.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 30.1728, -89.3039 |
| Nearest City | Long Beach (25 km) |
| Population Exposed | 232.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T13:43:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1cb8e272130b386a31bde552e609fc5f7b636471.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Mississippi Sound; Lake Borgne; Chandeleur Sound |
| Headline | Special Marine Warning issued May 9 at 8:43AM CDT until May 9 at 9:00AM CDT by NWS New Orleans LA |
| Expires | 2026-05-09T09:00:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Long Beach (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.