Right now
The most recent data we hold from NOAA arrived 58 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 13 July 2026 at 18:30 UTC. It is kept here as a record.
No stronger detection stands among the 6 recorded within 20 km of this point since 1 July 2026 — 5 others scored the same. The last comparable one was on 12 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 13 at 11:22AM CDT until July 13 at 1:30PM CDT by NWS New Orleans LA
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 22 / 100 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 28.8646, -89.9705 |
| Nearest City | Houma (109 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-13T16:22:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.e5ef3c9eaf46fe0704ea548f0b75291e |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-13T16:22:00.000Z.
First archived: 2026-07-13T16:41:21.536Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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 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 |
| Headline | Special Marine Warning issued July 13 at 11:22AM CDT until July 13 at 1:30PM CDT by NWS New Orleans LA |
| Expires | 2026-07-13T13:30:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e5ef3c9eaf46fe0704ea548f0b75291e2dc1a62e.001.1","noaa_urn:oid:2.49.0.1.840.0.6fc0409ef3d3f3ed6780a65a7f3acf9ce0aa5bca.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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