Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

WashingtonUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 4 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 10 May 2026 at 12:15 UTC. It is kept here as a record.

No stronger detection stands among the 155 recorded within 20 km of this point since 9 May 2026 — 101 others scored the same. The last comparable one was on 9 May 2026. 17 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 9 at 3:03PM CDT until May 12 at 1:00PM CDT by NWS New Orleans LA

An estimated 20,480 people live within 50 km of this point.

Nearby, since 9 May 2026

How we know

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

Our own score for this event is 34 out of 100, at 79 % 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 confidence79%
Coordinates30.7125, -90.2050
Nearest CityHammond (34 km)
Population Exposed20.5K within 50 km
Impact Tiersignificant
Timestamp2026-05-12T00:00:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.345c392c0d712527aa5800a3ebb9afcf

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyImmediate
CertaintyObserved
AreaDescSt. Tammany, LA; Pearl River, MS; Washington, LA; Pearl River, MS and 10 more areas
HeadlineFlood Warning issued May 9 at 3:03PM CDT until May 12 at 1:00PM CDT by NWS New Orleans LA
Expires2026-05-10T07:15:00-05:00
SenderNameNWS New Orleans LA
HasExactCoordstrue
MergedCount16
MergedIds["noaa_urn:oid:2.49.0.1.840.0.345c392c0d712527aa5800a3ebb9afcfaf415722.001.1","noaa_urn:oid:2.49.0.1.840.0.1e39afc202ceb32faf8a8985fbc8bc16a8d635da.001.1","noaa_urn:oid:2.49.0.1.840.0.152da2e7d13c193521c8474645b5a12971e23436.001.1","noaa_urn:oid:2.49.0.1.840.0.ffc9e11486c810ba000b68b55c54a2e0a5b99afd.001.1","noaa_urn:oid:2.49.0.1.840.0.cf986740cc35388f42135fe53805214e32eb4a47.001.1","noaa_urn:oid:2.49.0.1.840.0.aa31c39fc8b208136af0c5e698c5d9d72c76358c.001.1","noaa_urn:oid:2.49.0.1.840.0.efaf3d03ed91bcb760212750c60ea33aee7bb296.001.1","noaa_urn:oid:2.49.0.1.840.0.d3f0f8de2d009129b652c96fb433aa2af03568f3.001.1","noaa_urn:oid:2.49.0.1.840.0.355728ff191af8e74b03b06166d387346f372922.001.1","noaa_urn:oid:2.49.0.1.840.0.e09682f37525e1c3f9feb064eadee37c86d138d3.001.1","noaa_urn:oid:2.49.0.1.840.0.5a9c5f5744e99662a66052267573d2ae4a5d0b6f.001.1","noaa_urn:oid:2.49.0.1.840.0.40ea75df579feca9251533b767c503de48e6da86.001.1","noaa_urn:oid:2.49.0.1.840.0.82e7050f3888b95e21f097b1189748f78acb84c6.001.1","noaa_urn:oid:2.49.0.1.840.0.974d6fe6cec48037c7f75831634a5e3e5cfaa5e3.001.1","noaa_urn:oid:2.49.0.1.840.0.179e6764b8ebce345ce3ff1ce971a312253faecc.001.1","noaa_urn:oid:2.49.0.1.840.0.950e83d45abbba5a14d6bf63e8a1ffc4484507a8.002.1"]

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