This alert expired on 9 May 2026 at 15:00 UTC. It is kept here as a record.
It is the 7th strongest of the 26 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 May 9 at 9:51AM CDT until May 9 at 10:00AM CDT by NWS New Orleans LA
An estimated 58,094 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 23, 2026 · score 39 · 4.8 km
- May 25, 2026 · score 34 · 10.2 km
- August 13, 2026 · score 43 · 15.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 86 % 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) | 39 / 100 |
| Our confidence | 86% |
| Coordinates | 30.1811, -88.2535 |
| Nearest City | Pascagoula (36 km) |
| Population Exposed | 58.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T14:51:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.a9369f52ec771ede21a1460590a21724 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Mississippi Sound; Chandeleur Sound; Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM; Coastal waters from Pascagoula Mississippi to Stake Island Louisiana out 20 to 60 NM; South Mobile Bay; Mississippi Sound; Perdido Bay Area; Coastal waters from Pensacola FL to Pascagoula MS out 20 NM; Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM |
| Headline | Special Marine Warning issued May 9 at 9:51AM CDT until May 9 at 10:00AM CDT by NWS New Orleans LA |
| Expires | 2026-05-09T10:00:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a9369f52ec771ede21a1460590a21724e1162f6b.001.1","noaa_urn:oid:2.49.0.1.840.0.216f1347f079459b5a262a485b7ca0f686403a5d.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 52 |
| 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_1778334600000","source":"iem","severity":"low","severityValue":25,"timestamp":1778334600000,"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 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 39/100, near Pascagoula (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.