Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

St. TammanyUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 1 minute 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 22 May 2026 at 22:30 UTC. It is kept here as a record.

It is the 5th strongest of the 86 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 27 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued May 22 at 5:03PM CDT until May 22 at 5:30PM CDT by NWS New Orleans LA

An estimated 27,942 people live within 50 km of this point.

Nearby, since 12 March 2026

How we know

Confirmed by 3 independent sources, including NOAA.

Our own score for this event is 34 out of 100, at 89 % 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)34 / 100
Our confidence89%
Coordinates30.6531, -89.9046
Nearest CitySlidell (43 km)
Population Exposed27.9K within 50 km
Impact Tiersignificant
Timestamp2026-05-22T22:03:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.612c20bb202484d58bfcf97b73b09b14

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescSt. Tammany, LA; Tangipahoa, LA; Washington, LA; Jefferson, LA; St. Charles, LA; Forrest, MS; Jones, MS
HeadlineSevere Thunderstorm Warning issued May 22 at 5:03PM CDT until May 22 at 5:30PM CDT by NWS New Orleans LA
Expires2026-05-22T17:30:00-05:00
SenderNameNWS New Orleans LA
HasExactCoordstrue
MergedCount3
MergedIds["noaa_urn:oid:2.49.0.1.840.0.612c20bb202484d58bfcf97b73b09b145ecab169.001.1","noaa_urn:oid:2.49.0.1.840.0.adf9a3eef59bedaccc75d51599878390ba06523b.001.1","noaa_urn:oid:2.49.0.1.840.0.4257f2ea6458a5dfb0b00855e8a68a7eee53912d.001.1"]
Iem TypeSummaryD
Iem City1 ENE Folsom
Iem CountySt. Tammany
Iem StateLA
Iem WfoLIX
Iem RemarkTrees reported down on several streets in the Folsom and Goodbee area.
MergedSources[{"id":"iem_D_30.570_-90.240_1779480300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779480300000,"latitude":30.57,"longitude":-90.24},{"id":"iem_D_30.640_-90.190_1779480300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779480300000,"latitude":30.64,"longitude":-90.19}]

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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Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.