This alert expired on 12 March 2026 at 03:30 UTC. It is kept here as a record.
It is the 55th strongest of the 186 detections recorded within 20 km of this point since 12 March 2026.
What the source measured
NOAA reported: Flood Warning issued March 10 at 10:17AM CDT until March 13 at 2:05PM CDT by NWS Memphis TN
An estimated 1,672,124 people live within 50 km of this point.
Nearby, since 12 March 2026
- April 28, 2026 · score 52 · 2.3 km
- June 12, 2026 · score 52 · 3.5 km
- March 16, 2026 · score 52 · 3.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 81 % 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) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 34.9018, -90.0809 |
| Nearest City | Horn Lake (8 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T12:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood-Warning_noaa_urn-oid-2_49_0_1_840_0_2c3f610a2964f67f9ff3b56017816f8a |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Monroe, MS; Lafayette, MS; Marshall, MS; Union, MS; Jackson, AR; Woodruff, AR and 1 more areas |
| Headline | Flood Warning issued March 10 at 10:17AM CDT until March 13 at 2:05PM CDT by NWS Memphis TN |
| Expires | 2026-03-11T22:30:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2c3f610a2964f67f9ff3b56017816f8ad6a13310.001.1","noaa_urn:oid:2.49.0.1.840.0.971ed8625e3362d8590f8ea63bd1ee17848a5038.001.1","noaa_urn:oid:2.49.0.1.840.0.205b8da75431338d946ccc90dc71f6b125965a80.002.1","noaa_urn:oid:2.49.0.1.840.0.205b8da75431338d946ccc90dc71f6b125965a80.001.1"] |
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 52/100, near Horn Lake (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.