This alert expired on 12 June 2026 at 20:00 UTC. It is kept here as a record.
No stronger detection stands among the 111 recorded within 20 km of this point since 12 March 2026 — 84 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 12 at 2:20PM CDT until June 12 at 3:00PM CDT by NWS Memphis TN
An estimated 1,672,124 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 6, 2026 · score 52 · 5.4 km
- March 16, 2026 · score 52 · 7.6 km
- June 13, 2026 · score 46 · 8.4 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 | 35.0473, -89.9868 |
| Nearest City | Southaven (7 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T19:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.2bb715b48cfef213f6754c598868467d |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Shelby, TN; DeSoto, MS; Marshall, MS; Fayette, TN; Shelby, TN |
| Headline | Flash Flood Warning issued June 12 at 2:20PM CDT until June 12 at 3:00PM CDT by NWS Memphis TN |
| Expires | 2026-06-12T15:00:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2bb715b48cfef213f6754c598868467d486a36f9.001.1","noaa_urn:oid:2.49.0.1.840.0.9e5ddf6041e9809e1a38033237b2b98123bf060f.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 Southaven (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.