This alert expired on 8 August 2026 at 21:00 UTC. It is kept here as a record.
No stronger detection stands among the 56 recorded within 20 km of this point since 9 March 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 8 at 4:31PM EDT until August 8 at 5:00PM EDT by NWS Burlington VT
An estimated 98,035 people live within 50 km of this point.
Nearby, since 9 March 2026
- March 9, 2026 · score 22 · 12.4 km
- July 1, 2026 · score 39 · 12.9 km
- March 10, 2026 · score 39 · 15.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 85 % 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) | 39 / 100 |
| Our confidence | 85% |
| Coordinates | 44.6540, -73.2660 |
| Nearest City | Plattsburgh (15 km) |
| Population Exposed | 98.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T20:31:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clinton, NY; Chittenden, VT; Franklin, VT; Grand Isle, VT |
| Headline | Severe Thunderstorm Warning issued August 8 at 4:31PM EDT until August 8 at 5:00PM EDT by NWS Burlington VT |
| Expires | 2026-08-08T17:00:00-04:00 |
| SenderName | NWS Burlington VT |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | 3 N Valcour |
| Iem County | Clinton |
| Iem State | NY |
| Iem Wfo | BTV |
| Iem Remark | Seeing a few almost golf ball sized. |
| MergedSources | [{"id":"iem_H_44.640_-73.440_1786220100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786220100000,"latitude":44.64,"longitude":-73.44}] |
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 39/100, near Plattsburgh (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.