Right now
The most recent data we hold from NOAA arrived 15 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 4 July 2026 at 22:21 UTC. It is kept here as a record.
No stronger detection stands among the 29 recorded within 20 km of this point since 16 March 2026 — 24 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 5:11PM CDT until July 4 at 5:15PM CDT by NWS Memphis TN
An estimated 143,524 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 1, 2026 · score 43 · 18.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 78 % 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) | 43 / 100 |
| Our confidence | 78% |
| Coordinates | 35.3337, -89.3219 |
| Nearest City | Collierville (45 km) |
| Population Exposed | 143.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T22:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.11a3de036695c676bb99e55da9a72da2 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Alcorn, MS; Tippah, MS; Hardeman, TN; McNairy, TN; Mississippi, AR; Lauderdale, TN |
| Headline | Severe Thunderstorm Warning issued July 4 at 5:11PM CDT until July 4 at 5:15PM CDT by NWS Memphis TN |
| Expires | 2026-07-04T17:21:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.11a3de036695c676bb99e55da9a72da2ba8f5b05.001.1","noaa_urn:oid:2.49.0.1.840.0.452107576ec0274d4f58995b522558ff69081506.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 in this area?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.