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 20 June 2026 at 17:30 UTC. It is kept here as a record.
It is the 38th strongest of the 51 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 20 at 9:26AM CDT until June 20 at 12:30PM CDT by NWS Shreveport LA
Nearby, since 16 March 2026
- July 2, 2026 · score 22 · 18.3 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 31.7601, -93.6806 |
| Nearest City | Natchitoches (56 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-20T14:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.1a30dc9d87183bd754add14035cf6c75 |
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: 2026-06-20T14:26:00.000Z.
First archived: 2026-06-20T15:19:58.467Z. 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
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Grant, LA; La Salle, LA; Natchitoches, LA; Winn, LA; Bossier, LA; Caddo, LA; De Soto, LA; Cherokee, TX and 3 more areas |
| Headline | Flash Flood Warning issued June 20 at 9:26AM CDT until June 20 at 12:30PM CDT by NWS Shreveport LA |
| Expires | 2026-06-20T12:30:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1a30dc9d87183bd754add14035cf6c75fb10e6c1.001.1","noaa_urn:oid:2.49.0.1.840.0.6adba3dbe669fbfb83f206dea39f037a404bb894.001.1","noaa_urn:oid:2.49.0.1.840.0.5b8693c64aec4ed919224ac4e485807eb555e7d6.001.1","noaa_urn:oid:2.49.0.1.840.0.3726ea6aea03f9e1d56717570ef4f546707bd3f1.001.1","noaa_urn:oid:2.49.0.1.840.0.bbb19103d3ea0f07682d5d80f2f04e060bafb021.001.1","noaa_urn:oid:2.49.0.1.840.0.2e8681f8dc6021ba3e2a6bce51e1b08c9a90b97a.001.1"] |
| Iem TypeSummary | F |
| Iem City | 4 SW Martin |
| Iem County | Red River |
| Iem State | LA |
| Iem Wfo | SHV |
| Iem Remark | water 1 foot deep over Highway 155 between Martin and Coushatta. |
| MergedSources | [{"id":"iem_F_31.970_-93.010_1781965620000","source":"iem","severity":"low","severityValue":25,"timestamp":1781965620000,"latitude":31.97,"longitude":-93.01},{"id":"iem_F_32.060_-93.270_1781957820000","source":"iem","severity":"low","severityValue":25,"timestamp":1781957820000,"latitude":32.06,"longitude":-93.27}] |
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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