Calamity
MediumSevere WeatherCS: 34 · v1

Severe Weather in United States

United StatesNOAA

Right now

The most recent data we hold from NOAA arrived 42 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 20 June 2026 at 19:45 UTC. It is kept here as a record.

No stronger detection stands among the 67 recorded within 20 km of this point since 8 May 2026 — 26 others scored the same. Another comparable one was recorded here earlier the same day. 31 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued June 20 at 11:51AM CDT until June 20 at 2:45PM CDT by NWS Shreveport LA

Urban PEI: 20,480 within a heuristic 50 km radius; not unique people.

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 34 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

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
Legacy data-support index0.80/1
Coordinates30.9308, -90.4216
Nearest CityHammond (48 km)
Urban exposure index (PEI)20.5K within 50 km
Impact Tiersignificant
Timestamp2026-06-22T05:27:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.39feb1b18257db5c709e255f020c4326

Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: noaa. Occurrence: 2026-06-22T05:27:00.000Z.

First archived: 2026-06-20T17:26:59.573Z. Material modification: not recorded.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

Score Breakdown

35
intensity
40
Urban PEI term
0
Scenario weight
80
Recorded reference / batch anomaly

Technical Details

EventFlood Warning
UrgencyExpected
CertaintyLikely
AreaDescBienville, LA; Caldwell, LA; Jackson, LA; La Salle, LA; Natchitoches, LA; Ouachita, LA; Winn, LA; De Soto, LA; Grant, LA; Natchitoches, LA; Red River, LA; Sabine, LA; Allen, LA and 41 more areas
HeadlineFlood Warning issued June 20 at 11:51AM CDT until June 20 at 2:45PM CDT by NWS Shreveport LA
Expires2026-06-20T14:45:00-05:00
SenderNameNWS Shreveport LA
HasExactCoordstrue
MergedCount52
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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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