This alert expired on 22 May 2026 at 18:45 UTC. It is kept here as a record.
It is the 8th strongest of the 76 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 May 22 at 12:55PM CDT until May 22 at 1:45PM CDT by NWS New Orleans LA
An estimated 262,709 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 18, 2026 · score 43 · 3.2 km
- July 10, 2026 · score 43 · 5.3 km
- June 8, 2026 · score 43 · 11.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 85 % 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 | 85% |
| Coordinates | 30.3712, -89.0487 |
| Nearest City | Gulfport (4 km) |
| Population Exposed | 262.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-22T17:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8d4c924d8ba860afa1122790c414d101a3f43056.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Mississippi Sound |
| Headline | Special Marine Warning issued May 22 at 12:55PM CDT until May 22 at 1:45PM CDT by NWS New Orleans LA |
| Expires | 2026-05-22T13:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 41 |
| Iem Unit | MPH |
| Iem City | 3 E Long Beach |
| Iem County | Harrison |
| Iem State | MS |
| Iem Wfo | LIX |
| Iem Remark | The Weatherflow mesonet XGPT in Gulfport on Highway 90 measured a thunderstorm wind gusts of 41 mph or 36 knots. |
| MergedSources | [{"id":"iem_M_30.360_-89.120_1779466200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779466200000,"latitude":30.36,"longitude":-89.12}] |
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 Gulfport (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.