This alert expired on 4 July 2026 at 02:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 10 detections recorded within 20 km of this point since 16 March 2026. 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 3 at 10:09PM EDT until July 3 at 10:30PM EDT by NWS Morristown TN
How we know
Confirmed by 10 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 71 % 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) | 22 / 100 |
| Our confidence | 71% |
| Coordinates | 36.5560, -83.9420 |
| Nearest City | Knoxville (66 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-04T02:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8c5123312928471fa0b915c27606a9830fe4f7c9.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Campbell, TN; Claiborne, TN |
| Headline | Severe Thunderstorm Warning issued July 3 at 10:09PM EDT until July 3 at 10:30PM EDT by NWS Morristown TN |
| Expires | 2026-07-03T22:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| 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_D_36.080_-84.200_1783121700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783121700000,"latitude":36.08,"longitude":-84.2},{"id":"iem_D_36.390_-84.100_1783127400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127400000,"latitude":36.39,"longitude":-84.1},{"id":"iem_D_36.020_-84.250_1783120800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120800000,"latitude":36.02,"longitude":-84.25},{"id":"iem_D_36.220_-84.160_1783125900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125900000,"latitude":36.22,"longitude":-84.16},{"id":"iem_H_36.110_-84.170_1783122000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783122000000,"latitude":36.11,"longitude":-84.17},{"id":"iem_H_36.080_-84.200_1783120740000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120740000,"latitude":36.08,"longitude":-84.2},{"id":"iem_D_36.030_-84.320_1783120500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120500000,"latitude":36.03,"longitude":-84.32},{"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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.