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 17:00 UTC. It is kept here as a record.
No stronger detection stands among the 63 recorded within 20 km of this point since 16 March 2026 — 53 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 20 at 10:22AM CDT until June 20 at 12:00PM CDT by NWS Shreveport LA
Urban PEI: 18,365 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 1, 2026 · score 34 · 9.8 km
- March 16, 2026 · score 34 · 14.1 km
- May 21, 2026 · score 34 · 18.3 km
How we know
5 recorded sources include NOAA; independence is not established by this count.
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
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 32.0011, -92.7843 |
| Nearest City | Natchitoches (39 km) |
| Urban exposure index (PEI) | 18.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T15:22:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5a7c83fc522296b21a94999e7a643023 |
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: 2026-06-20T15:22:00.000Z.
First archived: 2026-06-20T16:49:58.767Z. 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 | Bienville, LA; Caldwell, LA; Jackson, LA; La Salle, LA; Natchitoches, LA; Ouachita, LA; Winn, LA; Grant, LA; La Salle, LA; Natchitoches, LA; Winn, LA; Bossier, LA; Caddo, LA; De Soto, LA |
| Headline | Flash Flood Warning issued June 20 at 10:22AM CDT until June 20 at 12:00PM CDT by NWS Shreveport LA |
| Expires | 2026-06-20T12:00:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5a7c83fc522296b21a94999e7a64302399cbe47b.001.1","noaa_urn:oid:2.49.0.1.840.0.1a30dc9d87183bd754add14035cf6c75fb10e6c1.001.1","noaa_urn:oid:2.49.0.1.840.0.6adba3dbe669fbfb83f206dea39f037a404bb894.001.1"] |
| 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_32.510_-92.310_1781956800000","source":"iem","severity":"low","severityValue":25,"timestamp":1781956800000,"latitude":32.51,"longitude":-92.31},{"id":"iem_F_32.430_-92.200_1781954520000","source":"iem","severity":"low","severityValue":25,"timestamp":1781954520000,"latitude":32.43,"longitude":-92.2},{"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.
Review the area, threshold and delivery channel in your account.
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