This alert expired on 9 August 2026 at 21:45 UTC. It is kept here as a record.
It is the 18th strongest of the 41 detections recorded within 20 km of this point since 13 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 9 at 5:14PM EDT until August 9 at 5:45PM EDT by NWS Raleigh NC
An estimated 107,090 people live within 50 km of this point.
Nearby, since 13 March 2026
- March 13, 2026 · score 48 · 4.5 km
- August 3, 2026 · score 41 · 10.0 km
- August 4, 2026 · score 48 · 13.6 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 35.3445, -78.3764 |
| Nearest City | Clayton (35 km) |
| Population Exposed | 107.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-09T21:14:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8f886d7c90ad88680e3b2b3ab0827254398f02e4.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Johnston, NC; Wayne, NC |
| Headline | Severe Thunderstorm Warning issued August 9 at 5:14PM EDT until August 9 at 5:45PM EDT by NWS Raleigh NC |
| Expires | 2026-08-09T17:45:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
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 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.