This alert expired on 18 July 2026 at 21:06 UTC. It is kept here as a record.
It is the 19th strongest of the 143 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 18 at 4:56PM EDT until July 18 at 5:00PM EDT by NWS Blacksburg VA
An estimated 284,873 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 27, 2026 · score 43 · 4.1 km
- July 18, 2026 · score 43 · 6.0 km
- May 27, 2026 · score 43 · 15.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % 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) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 36.2293, -80.5366 |
| Nearest City | Clemmons (27 km) |
| Population Exposed | 284.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-18T20:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2759ac05b457e32a23556a85dbe29d03 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Surry, NC; Wilkes, NC; Yadkin, NC; Forsyth, NC; Stokes, NC; Surry, NC and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 18 at 4:56PM EDT until July 18 at 5:00PM EDT by NWS Blacksburg VA |
| Expires | 2026-07-18T17:06:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2759ac05b457e32a23556a85dbe29d03bcbfb89c.001.1","noaa_urn:oid:2.49.0.1.840.0.f74c381f8bab7a4a9c96b70a5fa8e211bc780045.001.1","noaa_urn:oid:2.49.0.1.840.0.ff848ddc2d78cd64292fd933fe911cc599e7fd1c.001.1","noaa_urn:oid:2.49.0.1.840.0.ccdf5fcc61598f64bf5a8dd2490a96b920cff01b.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.
Want to know when something happens near Clemmons?
Calamity.live data shows a weather event with CalamityScore 43/100, near Clemmons (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.