Calamity
MediumSevere WeatherCalamity Score: 39

Severe Weather in United States

United StatesNOAA

Right now

The most recent data we hold from NOAA arrived 82 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 11 May 2026 at 19:15 UTC. It is kept here as a record.

It is the 6th strongest of the 17 detections recorded within 20 km of this point since 11 May 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Special Marine Warning issued May 11 at 1:52PM EDT until May 11 at 3:15PM EDT by NWS Wilmington NC

An estimated 67,357 people live within 50 km of this point.

Nearby, since 11 May 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 39 out of 100, at 82 % 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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)39 / 100
Our confidence82%
Coordinates34.3345, -77.3950
Nearest CityJacksonville (46 km)
Population Exposed67.4K within 50 km
Impact Tiersignificant
Timestamp2026-05-11T17:52:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.081d1bd872d1f874a7ea70208961ad2b

Score Breakdown

35
intensity
55
population
0
cascading
80
historical

Technical Details

EventSpecial Marine Warning
UrgencyImmediate
CertaintyLikely
AreaDescCoastal waters from Surf City to Cape Fear NC out 20 nm; Waters from Surf City NC to Little River Inlet SC from 20 to 60 NM; S of Cape Lookout NC to Surf City NC out to 20 NM; Waters from Cape Lookout to Surf City NC from 20 to 60 NM
HeadlineSpecial Marine Warning issued May 11 at 1:52PM EDT until May 11 at 3:15PM EDT by NWS Wilmington NC
Expires2026-05-11T15:15:00-04:00
SenderNameNWS Wilmington NC
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.081d1bd872d1f874a7ea70208961ad2b3441470a.001.1","noaa_urn:oid:2.49.0.1.840.0.75a9704b1c6006bdcab9e0b66ca4f250350ea739.001.1"]

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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United States severe weather, 11 May 2026 — and the 16 before it | Calamity.live