This alert expired on 3 August 2026 at 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 27 recorded within 20 km of this point since 17 March 2026 — 4 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 2:50PM EDT until August 3 at 3:30PM EDT by NWS Gray ME
Nearby, since 17 March 2026
- August 11, 2026 · score 22 · 15.8 km
- July 9, 2026 · score 22 · 17.9 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 60 % 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 | 60% |
| Coordinates | 44.4407, -71.6661 |
| Nearest City | Magog (100 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-03T18:50:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ad0e06a75b3e268b4e869236a70e580e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Coos, NH; Grafton, NH |
| Headline | Severe Thunderstorm Warning issued August 3 at 2:50PM EDT until August 3 at 3:30PM EDT by NWS Gray ME |
| Expires | 2026-08-03T15:30:00-04:00 |
| SenderName | NWS Gray ME |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ad0e06a75b3e268b4e869236a70e580e93a985c0.001.1","noaa_urn:oid:2.49.0.1.840.0.c082a5c4cc7dd524ade84cdd4169cf0179b5ad9e.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 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 (Canada), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.