Right now
The most recent data we hold from NOAA arrived 29 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 02:49 UTC. It is kept here as a record.
It is the 2nd strongest of the 23 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 10:39PM EDT until July 3 at 10:45PM EDT by NWS Jackson KY
Nearby, since 16 March 2026
- August 7, 2026 · score 22 · 8.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 36.8533, -83.9317 |
| Nearest City | Morristown (92 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-04T02:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a5d1859d260a8e5323573b607ea9999e0171bf56.001.1 |
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: 2026-07-04T02:39:00.000Z.
First archived: 2026-07-04T02:45:51.881Z. 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 | Knox, KY |
| Headline | Severe Thunderstorm Warning issued July 3 at 10:39PM EDT until July 3 at 10:45PM EDT by NWS Jackson KY |
| Expires | 2026-07-03T22:49:00-04:00 |
| SenderName | NWS Jackson KY |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | Lake City |
| Iem County | Anderson |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | WVLT Facebook commenter reported very large tree branch down in backyard near Rocky Top. |
| MergedSources | [{"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_36.220_-84.160_1783125900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125900000,"latitude":36.22,"longitude":-84.16}] |
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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