Right now
The most recent data we hold from NOAA arrived 1 minute 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 3 July 2026 at 02:00 UTC. It is kept here as a record.
It is the 12th strongest of the 55 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 2 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued July 2 at 7:59PM CDT until July 2 at 9:00PM CDT by NWS Memphis TN
Urban PEI: 278,730 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 28, 2026 · score 43 · 0.0 km
- July 27, 2026 · score 43 · 0.0 km
- July 22, 2026 · score 43 · 0.0 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 35.5000, -86.6000 |
| Nearest City | Shelbyville (13 km) |
| Urban exposure index (PEI) | 278.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T00:59:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9a5b7ad42d7af3198ddbc53cc34704b41e88d9c2.002.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-03T00:59:00.000Z.
First archived: 2026-07-03T01:33:00.472Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Carroll, TN; Gibson, TN; Henderson, TN; Madison, TN; Weakley, TN |
| Headline | Severe Thunderstorm Watch issued July 2 at 7:59PM CDT until July 2 at 9:00PM CDT by NWS Memphis TN |
| Expires | 2026-07-02T21:00:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | false |
| Iem TypeSummary | D |
| Iem City | 1 WSW Nolensville |
| Iem County | Williamson |
| Iem State | TN |
| Iem Wfo | OHX |
| Iem Remark | Two power poles were blown over on Nolensville Rd north of York Rd. |
| MergedSources | [{"id":"iem_D_35.860_-86.580_1783027620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783027620000,"latitude":35.86,"longitude":-86.58},{"id":"iem_D_35.940_-86.660_1783024800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783024800000,"latitude":35.94,"longitude":-86.66}] |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens near Shelbyville?