This alert expired on 7 August 2026 at 00:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 58 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 August 6 at 7:55PM EDT until August 6 at 8:15PM EDT by NWS Raleigh NC
An estimated 1,501,488 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 20, 2026 · score 46 · 5.3 km
- July 23, 2026 · score 52 · 7.9 km
- July 18, 2026 · score 52 · 10.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 84 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 84% |
| Coordinates | 36.0643, -78.7657 |
| Nearest City | Durham (15 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-06T23:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.59932664f8f2430fa04a941bd80bc6c662aa4dbe.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Durham, NC; Granville, NC |
| Headline | Severe Thunderstorm Warning issued August 6 at 7:55PM EDT until August 6 at 8:15PM EDT by NWS Raleigh NC |
| Expires | 2026-08-06T20:15:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 2 ESE Siler City |
| Iem County | Chatham |
| Iem State | NC |
| Iem Wfo | RAH |
| Iem Remark | Tree down. |
| MergedSources | [{"id":"iem_D_35.710_-79.420_1786056480000","source":"iem","severity":"low","severityValue":25,"timestamp":1786056480000,"latitude":35.71,"longitude":-79.42}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Durham (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.