Right now
The most recent data we hold from NOAA arrived 66 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 22 June 2026 at 23:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 29 detections recorded within 20 km of this point since 14 June 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 22 at 7:11PM EDT until June 22 at 7:30PM EDT by NWS Morristown TN
Urban PEI: 77,751 within a heuristic 50 km radius; not unique people.
Nearby, since 14 June 2026
- June 14, 2026 · score 43 · 21.8 km
- July 12, 2026 · score 34 · 23.5 km
- July 19, 2026 · score 22 · 25.3 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.83/1 |
| Coordinates | 35.0216, -84.5162 |
| Nearest City | Cleveland (37 km) |
| Urban exposure index (PEI) | 77.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-22T23:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b1349f308f39d30cd5a274849c990a7b |
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: 2026-06-22T23:11:00.000Z.
First archived: 2026-06-22T23:26:59.161Z. 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 | Bradley, TN; McMinn, TN; Polk, TN; Fannin, GA; Gilmer, GA; Gordon, GA; Murray, GA; Pickens, GA; Union, GA; Whitfield, GA; Cherokee, NC; Polk, TN |
| Headline | Severe Thunderstorm Warning issued June 22 at 7:11PM EDT until June 22 at 7:30PM EDT by NWS Morristown TN |
| Expires | 2026-06-22T19:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b1349f308f39d30cd5a274849c990a7bd67c5adb.002.1","noaa_urn:oid:2.49.0.1.840.0.8d54c322f84b303ab1b04d49aff9f5d2f0b2fc61.002.1","noaa_urn:oid:2.49.0.1.840.0.56d6b007bbb651fb8ebde1d8aa5ab1dc22ba6160.001.1"] |
| Iem TypeSummary | D |
| Iem City | 1 E Chattanooga |
| Iem County | Hamilton |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | Tree(s) reported down on Campbell St. Timing based on radar. |
| MergedSources | [{"id":"iem_D_35.070_-85.240_1782158220000","source":"iem","severity":"low","severityValue":25,"timestamp":1782158220000,"latitude":35.07,"longitude":-85.24}] |
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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