This alert expired on 30 May 2026 at 03:45 UTC. It is kept here as a record.
No stronger detection stands among the 45 recorded within 20 km of this point since 16 March 2026 — 35 others scored the same. The last comparable one was on 28 April 2026.
What the source measured
NOAA reported: Flash Flood Warning issued May 29 at 8:44PM CDT until May 29 at 10:45PM CDT by NWS Memphis TN
An estimated 66,975 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 11, 2026 · score 39 · 5.3 km
- July 20, 2026 · score 39 · 8.8 km
- June 13, 2026 · score 39 · 11.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 84 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 39 / 100 |
| Our confidence | 84% |
| Coordinates | 35.6743, -88.9171 |
| Nearest City | Jackson (12 km) |
| Population Exposed | 67.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T01:44:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.93444818164d33b44cddc10df7130626dd567b83.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Madison, TN |
| Headline | Flash Flood Warning issued May 29 at 8:44PM CDT until May 29 at 10:45PM CDT by NWS Memphis TN |
| Expires | 2026-05-29T22:45:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 2 E Jackson |
| Iem County | Madison |
| Iem State | TN |
| Iem Wfo | MEG |
| Iem Remark | water rescues reported in north Jackson, including Roosevelt Pkwy at Lincoln St where the water is up to the windows of a sedan in a low lying spot. Many other locations in this area have stalled vehi |
| MergedSources | [{"id":"iem_F_35.630_-88.800_1780106220000","source":"iem","severity":"low","severityValue":25,"timestamp":1780106220000,"latitude":35.63,"longitude":-88.8}] |
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.
Want to know when something happens near Jackson?
Calamity.live data shows a weather event with CalamityScore 39/100, near Jackson (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.