Right now
The most recent data we hold from NOAA arrived 3 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 00:30 UTC. It is kept here as a record.
It is the 24th strongest of the 36 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 3 July 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 8:08PM EDT until July 3 at 8:30PM EDT by NWS Morristown TN
Urban PEI: 29,302 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- August 12, 2026 · score 34 · 19.1 km
How we know
5 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 36.2345, -84.5286 |
| Nearest City | Oak Ridge (34 km) |
| Urban exposure index (PEI) | 29.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T00:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0c5321f5f8e99e7b10eb8a28f2de05c4 |
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: 2026-07-04T00:08:00.000Z.
First archived: 2026-07-04T00:16:30.234Z. 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 Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anderson, TN; Campbell, TN; Fentress, TN |
| Headline | Severe Thunderstorm Warning issued July 3 at 8:08PM EDT until July 3 at 8:30PM EDT by NWS Morristown TN |
| Expires | 2026-07-03T20:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0c5321f5f8e99e7b10eb8a28f2de05c4781c2ce9.002.1","noaa_urn:oid:2.49.0.1.840.0.9edf04a6ad6f1d90d88bab53a4fcb5961b934ee9.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 0.75 |
| Iem Unit | Inch |
| Iem City | 6 NE Oak Ridge |
| Iem County | Anderson |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | Brief power loss accompanying the hail. |
| MergedSources | [{"id":"iem_H_36.080_-84.200_1783120740000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120740000,"latitude":36.08,"longitude":-84.2},{"id":"iem_H_35.980_-84.410_1783119120000","source":"iem","severity":"low","severityValue":25,"timestamp":1783119120000,"latitude":35.98,"longitude":-84.41},{"id":"iem_D_36.010_-84.270_1783120200000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120200000,"latitude":36.01,"longitude":-84.27},{"id":"iem_H_36.020_-84.220_1783118400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783118400000,"latitude":36.02,"longitude":-84.22}] |
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.
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