Right now
The most recent data we hold from NOAA arrived 28 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 28 July 2026 at 23:15 UTC. It is kept here as a record.
It is the 5th strongest of the 39 detections recorded within 20 km of this point since 1 April 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 28 at 6:59PM EDT until July 28 at 7:15PM EDT by NWS Morristown TN
Urban PEI: 111,748 within a heuristic 50 km radius; not unique people.
Nearby, since 1 April 2026
- June 12, 2026 · score 43 · 10.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 35.6184, -82.1291 |
| Nearest City | Asheville (38 km) |
| Urban exposure index (PEI) | 111.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-28T22:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.fe11941ecb606e801044608f393ab109 |
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: 2026-07-28T22:59:00.000Z.
First archived: 2026-07-28T23:02:54.784Z. 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 | Blount, TN; Sevier, TN; Graham, NC; Jackson, NC; Macon, NC; Swain, NC; Buncombe, NC; Henderson, NC; Polk, NC; Rutherford, NC and 5 more areas |
| Headline | Severe Thunderstorm Warning issued July 28 at 6:59PM EDT until July 28 at 7:15PM EDT by NWS Morristown TN |
| Expires | 2026-07-28T19:15:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fe11941ecb606e801044608f393ab109d9581f72.001.1","noaa_urn:oid:2.49.0.1.840.0.7c7d0419ccb307f41462c161c77f80bf5708696b.001.1","noaa_urn:oid:2.49.0.1.840.0.707ab4f5877e8415c150de2314ebfac3db4b69db.001.1","noaa_urn:oid:2.49.0.1.840.0.3663a2e3990d6d79779ed4510bf77b71adde1a80.001.1","noaa_urn:oid:2.49.0.1.840.0.649af7653b87666866b679e59eb103a9f2bd6885.002.1","noaa_urn:oid:2.49.0.1.840.0.d8b5129350913a20892461bac32cb131c2827979.001.1","noaa_urn:oid:2.49.0.1.840.0.f363b8778d32a65c72779c167bd74a8834adcf88.002.1","noaa_urn:oid:2.49.0.1.840.0.1ab3d230a89871f2e03a5a21cba07686b114a19a.001.1"] |
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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