Right now
The most recent data we hold from NOAA arrived 2 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 20 June 2026 at 06:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 45 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 19 at 11:56PM CDT until June 20 at 1:30AM CDT by NWS New Orleans LA
Urban PEI: 222,013 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 3, 2026 · score 43 · 4.5 km
- July 20, 2026 · score 37 · 8.4 km
- July 21, 2026 · score 43 · 10.0 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 30.1011, -89.0758 |
| Nearest City | Long Beach (29 km) |
| Urban exposure index (PEI) | 222.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T04:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.dd2add5f27e6f4ff07c39a9c04957fee92559b69.001.1 |
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: 2026-06-20T04:56:00.000Z.
First archived: 2026-06-20T05:27:57.729Z. 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 | Mississippi Sound; Lake Borgne; Chandeleur Sound; Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM |
| Headline | Special Marine Warning issued June 19 at 11:56PM CDT until June 20 at 1:30AM CDT by NWS New Orleans LA |
| Expires | 2026-06-20T01:30:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 56 |
| Iem Unit | MPH |
| Iem City | 12 SSE Gulfport |
| Iem County | GMZ532 |
| Iem State | MS |
| Iem Wfo | LIX |
| Iem Remark | Mesonet station XSHI Ship Island. |
| MergedSources | [{"id":"iem_M_30.230_-88.980_1781928960000","source":"iem","severity":"low","severityValue":25,"timestamp":1781928960000,"latitude":30.23,"longitude":-88.98}] |
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.
Review the area, threshold and delivery channel in your account.
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