Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

WalthallUnited 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 2 June 2026 at 00:45 UTC. It is kept here as a record.

It is the 9th strongest of the 62 detections recorded within 20 km of this point since 10 March 2026. The last comparable one was on 9 May 2026.

What the source measured

NOAA reported: Flash Flood Warning issued June 1 at 4:42PM CDT until June 1 at 7:45PM CDT by NWS Jackson MS

Nearby, since 10 March 2026

How we know

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

Our own score for this event is 22 out of 100, at 60 % 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)22 / 100
Our confidence60%
Coordinates31.0621, -90.0813
Nearest CityHammond (72 km)
Impact Tierminor
Timestamp2026-06-01T21:42:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.b3453a7712aabc579c26b652697ef4aa

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescLincoln, MS; St. Tammany, LA; Hancock, MS; Pearl River, MS
HeadlineFlash Flood Warning issued June 1 at 4:42PM CDT until June 1 at 7:45PM CDT by NWS Jackson MS
Expires2026-06-01T19:45:00-05:00
SenderNameNWS Jackson MS
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.b3453a7712aabc579c26b652697ef4aacd81528e.001.1","noaa_urn:oid:2.49.0.1.840.0.163aea001f6aaa9c5d242ac92a8372050e99da23.001.1"]

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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Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.