This alert expired on 3 August 2026 at 19:00 UTC. It is kept here as a record.
No stronger detection stands among the 36 recorded within 20 km of this point since 17 March 2026 — 6 others scored the same. The last comparable one was on 15 July 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 3 at 2:10PM EDT until August 3 at 3:00PM EDT by NWS Gray ME
Nearby, since 17 March 2026
- July 2, 2026 · score 22 · 17.9 km
- June 19, 2026 · score 22 · 25.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 61 % 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 44.1505, -71.9248 |
| Nearest City | Laconia (78 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-03T18:10:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c082a5c4cc7dd524ade84cdd4169cf0179b5ad9e.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grafton, NH |
| Headline | Severe Thunderstorm Warning issued August 3 at 2:10PM EDT until August 3 at 3:00PM EDT by NWS Gray ME |
| Expires | 2026-08-03T15:00:00-04:00 |
| SenderName | NWS Gray ME |
| 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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.