Right now
The most recent data we hold from NOAA arrived 11 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 18 June 2026 at 13:30 UTC. It is kept here as a record.
It is the 30th strongest of the 31 detections recorded within 20 km of this point since 8 May 2026. The last comparable one was on 16 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 18 at 5:30AM CDT until June 18 at 8:30AM CDT by NWS Lake Charles LA
Urban PEI: 142,257 within a heuristic 50 km radius; not unique people.
Nearby, since 8 May 2026
- May 12, 2026 · score 67 · 5.8 km
- July 21, 2026 · score 41 · 11.8 km
- July 22, 2026 · score 43 · 14.8 km
How we know
7 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 30.0687, -90.6845 |
| Nearest City | Laplace (20 km) |
| Urban exposure index (PEI) | 142.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T10:30:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.d328790f9be7fd0caf76c4fb233f1307 |
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: 2026-06-18T10:30:00.000Z.
First archived: 2026-06-18T10:47:30.048Z. 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 | Avoyelles, LA; Evangeline, LA; St. Landry, LA; Assumption, LA; Lafourche, LA; Terrebonne, LA; St. Tammany, LA and 3 more areas |
| Headline | Flash Flood Warning issued June 18 at 5:30AM CDT until June 18 at 8:30AM CDT by NWS Lake Charles LA |
| Expires | 2026-06-18T08:30:00-05:00 |
| SenderName | NWS Lake Charles LA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d328790f9be7fd0caf76c4fb233f13079ccabe7c.001.1","noaa_urn:oid:2.49.0.1.840.0.f7c4cab1dffceec910200fa2f33f7b5b1e2bceae.001.1","noaa_urn:oid:2.49.0.1.840.0.6b01a5a35ecef6fb09604aa726f2ccb1043f9a61.001.1","noaa_urn:oid:2.49.0.1.840.0.b34abe625e3d6164f574d7b12943eec85f765f15.001.1","noaa_urn:oid:2.49.0.1.840.0.53f1b5da3f1193597d5bb1f9af9fbc433926d344.001.1","noaa_urn:oid:2.49.0.1.840.0.7dd551aa8905166d18c94cb8e206aa7ca8dcff54.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 NNW Bayou Cane |
| Iem County | Terrebonne |
| Iem State | LA |
| Iem Wfo | LIX |
| Iem Remark | Streets and yards flooded on Oakshire Dr. in Houma. |
| MergedSources | [{"id":"iem_F_29.690_-90.790_1781772480000","source":"iem","severity":"low","severityValue":25,"timestamp":1781772480000,"latitude":29.69,"longitude":-90.79},{"id":"iem_F_29.620_-90.750_1781773200000","source":"iem","severity":"low","severityValue":25,"timestamp":1781773200000,"latitude":29.62,"longitude":-90.75},{"id":"iem_F_29.600_-90.700_1781773980000","source":"iem","severity":"low","severityValue":25,"timestamp":1781773980000,"latitude":29.6,"longitude":-90.7},{"id":"iem_F_29.590_-90.710_1781773200000","source":"iem","severity":"low","severityValue":25,"timestamp":1781773200000,"latitude":29.59,"longitude":-90.71},{"id":"iem_F_29.590_-90.730_1781774100000","source":"iem","severity":"low","severityValue":25,"timestamp":1781774100000,"latitude":29.59,"longitude":-90.73},{"id":"iem_F_29.650_-90.760_1781773620000","source":"iem","severity":"low","severityValue":25,"timestamp":1781773620000,"latitude":29.65,"longitude":-90.76}] |
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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