Calamity
MediumSevere WeatherCalamity Score: 39

Severe Weather in United States

StoneUnited StatesNOAA

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 28 May 2026 at 04:00 UTC. It is kept here as a record.

It is the 46th strongest of the 118 detections recorded within 20 km of this point since 8 May 2026. Another comparable one was recorded here earlier the same day. 16 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 27 at 7:00AM CDT until May 30 at 11:00AM CDT by NWS New Orleans LA

An estimated 71,329 people live within 50 km of this point.

Nearby, since 8 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 80 % 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 confidence80%
Coordinates30.8263, -89.2041
Nearest CityWest Gulfport (49 km)
Population Exposed71.3K within 50 km
Impact Tiersignificant
Timestamp2026-05-27T12:00:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.faaa2aea74bdcdc5c15fb1a3db7b9647

Score Breakdown

35
intensity
55
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyImmediate
CertaintyObserved
AreaDescHarrison, MS; St. Tammany, LA; Hancock, MS; Pearl River, MS; Pearl River, MS and 4 more areas
HeadlineFlood Warning issued May 27 at 7:00AM CDT until May 30 at 11:00AM CDT by NWS New Orleans LA
Expires2026-05-27T23:00:00-05:00
SenderNameNWS New Orleans LA
HasExactCoordstrue
MergedCount9
MergedIds["noaa_urn:oid:2.49.0.1.840.0.faaa2aea74bdcdc5c15fb1a3db7b9647923a3eca.001.1","noaa_urn:oid:2.49.0.1.840.0.e85a588edaccdba54f7ad0c16e98e9d3f8b38d16.001.1","noaa_urn:oid:2.49.0.1.840.0.1d5dfb8964f642c063a3b8b091ad569aa1be7466.001.1","noaa_urn:oid:2.49.0.1.840.0.962f90de9b902b04ca932471d808a88f25a939d7.001.1","noaa_urn:oid:2.49.0.1.840.0.2cde39f3da9515628b752a52b2cdf6744604c51f.001.1","noaa_urn:oid:2.49.0.1.840.0.6216fc7310ab650d05c63a2f3e4ead3fb000c9e9.001.1","noaa_urn:oid:2.49.0.1.840.0.436896077c1097225abf4590a93469b940b39c93.001.1","noaa_urn:oid:2.49.0.1.840.0.21ce1a5665a4e5651b9028f3c09406f33f9a5a05.001.1","noaa_urn:oid:2.49.0.1.840.0.b9eb7568986f40f857ff01e8b7dc35b66ffba24c.001.1"]

Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

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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