This alert expired on 12 May 2026 at 06:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 145 detections recorded within 20 km of this point since 8 March 2026. Another comparable one was recorded here earlier the same day. 58 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 11 at 9:26AM CDT until May 14 at 1:00PM CDT by NWS New Orleans LA
An estimated 20,480 people live within 50 km of this point.
Nearby, since 8 March 2026
- May 12, 2026 · score 34 · 4.4 km
- May 22, 2026 · score 34 · 20.8 km
- July 5, 2026 · score 22 · 22.0 km
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 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 80% |
| Coordinates | 30.6597, -90.1642 |
| Nearest City | Hammond (33 km) |
| Population Exposed | 20.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T15:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.2290a4aa4ed07087bfbeb17ddc9bf58d |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | St. Tammany, LA; Tangipahoa, LA; Lafayette, LA; Vermilion, LA and 8 more areas |
| Headline | Flood Warning issued May 11 at 9:26AM CDT until May 14 at 1:00PM CDT by NWS New Orleans LA |
| Expires | 2026-05-12T01:30:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2290a4aa4ed07087bfbeb17ddc9bf58da75d471a.001.1","noaa_urn:oid:2.49.0.1.840.0.2290a4aa4ed07087bfbeb17ddc9bf58da75d471a.002.1","noaa_urn:oid:2.49.0.1.840.0.be1d12efd78f39cae5468a0f82e4334dd7c5ff26.001.1","noaa_urn:oid:2.49.0.1.840.0.be1d12efd78f39cae5468a0f82e4334dd7c5ff26.003.1","noaa_urn:oid:2.49.0.1.840.0.be1d12efd78f39cae5468a0f82e4334dd7c5ff26.002.1","noaa_urn:oid:2.49.0.1.840.0.5edf6a96c846d39e5fcace7ebfc805652aa88de0.003.1","noaa_urn:oid:2.49.0.1.840.0.5edf6a96c846d39e5fcace7ebfc805652aa88de0.002.1","noaa_urn:oid:2.49.0.1.840.0.96c8c7e88436a9919b62c100e76b29ba78989f5e.001.1","noaa_urn:oid:2.49.0.1.840.0.a9d4f2afed9ecd6e1e9d61d071a5ea1588779e9e.001.1","noaa_urn:oid:2.49.0.1.840.0.83b3402d8f4f7ae015627577e883a55c21c4c3b1.001.1","noaa_urn:oid:2.49.0.1.840.0.aaacf583f2ea57e06f34496545731132ddfd0b20.001.1","noaa_urn:oid:2.49.0.1.840.0.1e98eb16bf1ce7bce7beaaca20bd63a8e3fe0722.001.1"] |
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 10 February 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.
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 188 scientific monitoring sources.