Right now
The most recent data we hold from NOAA arrived 2 hours 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 12 August 2026 at 00:15 UTC. It is kept here as a record.
It is the 5th strongest of the 33 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 August 11 at 7:23PM EDT until August 11 at 8:15PM EDT by NWS Morristown TN
An estimated 716,568 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 26, 2026 · score 63 · 20.1 km
- August 2, 2026 · score 39 · 20.7 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 90 % 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) | 48 / 100 |
| Our confidence | 90% |
| Coordinates | 37.8811, -84.0102 |
| Nearest City | Winchester (19 km) |
| Population Exposed | 716.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T23:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d9ab10605a366d0f494af340c8b28579 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Russell, VA; Washington, VA; Bell, KY; Clay, KY; Harlan, KY; Knott, KY; Knox, KY; Leslie, KY; Letcher, KY; Perry, KY; Lee, VA; Russell, VA; Scott, VA; Washington, VA; Wise, VA; City of Norton, VA and 13 more areas |
| Headline | Severe Thunderstorm Warning issued August 11 at 7:23PM EDT until August 11 at 8:15PM EDT by NWS Morristown TN |
| Expires | 2026-08-11T20:15:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d9ab10605a366d0f494af340c8b285793551bcd1.001.1","noaa_urn:oid:2.49.0.1.840.0.152119c2ea9f8c286e59bc070d40b33d5e5b0091.001.1","noaa_urn:oid:2.49.0.1.840.0.b56d1c19197f37590575a01802202d2ec3e2da55.001.1","noaa_urn:oid:2.49.0.1.840.0.ab0541622d4d168a9e0dc330c07c5183768f37cd.001.1","noaa_urn:oid:2.49.0.1.840.0.967fb8796895f01c595d44d8936b938c9642ff79.001.1","noaa_urn:oid:2.49.0.1.840.0.80a921250f9a1149e9f6d9d0ad44b8f089bf2e4a.001.1","noaa_urn:oid:2.49.0.1.840.0.df69148bfe667dac606e472c28c5ae318ae54dac.001.1","noaa_urn:oid:2.49.0.1.840.0.3527dbc22c11c3d17d9bbd12bb353775bc5673ff.002.1","noaa_urn:oid:2.49.0.1.840.0.6439a531129594d9061141be8c4d4e34328bbbb6.001.1","noaa_urn:oid:2.49.0.1.840.0.7e74c2c01e51e2a57272bd8ddb7727c54db4b90b.001.1","noaa_urn:oid:2.49.0.1.840.0.b9cee7c8e6cf7ec9fb1d78816064d93aeef4e7f0.001.1","noaa_urn:oid:2.49.0.1.840.0.04d3de440e06208dfe390e2f1ec54141d7f51217.001.1","noaa_urn:oid:2.49.0.1.840.0.ef2cf427f57be933e1e08ee4450407095e6c0e96.001.1","noaa_urn:oid:2.49.0.1.840.0.425336f76c2e07ff74a9ba026314f4a7758c0c7f.002.1","noaa_urn:oid:2.49.0.1.840.0.011f98db77bd4334b11640d176535b982584a939.001.1","noaa_urn:oid:2.49.0.1.840.0.46114a9c3b33fad3ca2b88843a7efdaf7301074e.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 81 |
| Iem Unit | MPH |
| Iem City | Carlisle |
| Iem County | Nicholas |
| Iem State | KY |
| Iem Wfo | LMK |
| Iem Remark | Nicholas County Kentucky Mesonet. |
| MergedSources | [{"id":"iem_G_38.500_-84.350_1786479900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786479900000,"latitude":38.5,"longitude":-84.35},{"id":"iem_G_38.320_-84.040_1786481400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786481400000,"latitude":38.32,"longitude":-84.04}] |
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 near Winchester?