Right now
The most recent data we hold from NOAA arrived 9 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 5 July 2026 at 21:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 101 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 5 at 3:51PM CDT until July 5 at 4:45PM CDT by NWS New Orleans LA
An estimated 866,520 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 21, 2026 · score 48 · 6.8 km
- June 15, 2026 · score 48 · 7.2 km
- May 24, 2026 · score 48 · 9.8 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 78 % 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 | 78% |
| Coordinates | 29.9899, -89.8894 |
| Nearest City | Chalmette (10 km) |
| Population Exposed | 866.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T20:51:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.ba265daf65a86e347daaef4fafa81727 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Lake Pontchartrain; Lake Borgne; Lake Salvador and Lake Cataouatche; Mississippi Sound; Lake Borgne; Chandeleur Sound |
| Headline | Special Marine Warning issued July 5 at 3:51PM CDT until July 5 at 4:45PM CDT by NWS New Orleans LA |
| Expires | 2026-07-05T16:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ba265daf65a86e347daaef4fafa81727be9f66b8.002.1","noaa_urn:oid:2.49.0.1.840.0.daf1adf5d9e4f666ea7d4f0173fea07cef488e61.001.1","noaa_urn:oid:2.49.0.1.840.0.4a6f570c630379f031ccbc0fdfe72a7eb0b19ee0.001.1"] |
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.