Right now
The most recent data we hold from NOAA arrived 11 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 21 July 2026 at 05:15 UTC. It is kept here as a record.
It is one of only 2 we have recorded within 20 km of this point since 25 May 2026. The last comparable one was on 25 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued July 20 at 10:17PM CDT until July 21 at 12:15AM CDT by NWS New Orleans LA
Nearby, since 25 May 2026
- May 25, 2026 · score 22 · 18.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 28.4294, -89.3226 |
| Nearest City | Estelle (175 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-21T03:17:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.bc596ea7b73504dd4ee2f5ac987b823c |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Barataria Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm; Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM; Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM; Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM; Coastal Waters from Stake Island LA to Southwest Pass of the Mississippi River from 20 to 60 nm |
| Headline | Special Marine Warning issued July 20 at 10:17PM CDT until July 21 at 12:15AM CDT by NWS New Orleans LA |
| Expires | 2026-07-21T00:15:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bc596ea7b73504dd4ee2f5ac987b823c4e19dc0d.001.1","noaa_urn:oid:2.49.0.1.840.0.8fa9da0cf571f9fb71f2bc34a2342d36a487177c.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.
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