This alert expired on 11 August 2026 at 00:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 23 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 10 at 7:50PM EDT until August 10 at 8:30PM EDT by NWS Burlington VT
An estimated 19,806 people live within 50 km of this point.
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 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) | 34 / 100 |
| Our confidence | 84% |
| Coordinates | 44.8321, -73.7200 |
| Nearest City | Plattsburgh (26 km) |
| Population Exposed | 19.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T23:50:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.22693824088ab7a964069589f6595566 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Chittenden, VT; Franklin, VT; Lamoille, VT; Orleans, VT; Franklin, NY; St. Lawrence, NY |
| Headline | Severe Thunderstorm Warning issued August 10 at 7:50PM EDT until August 10 at 8:30PM EDT by NWS Burlington VT |
| Expires | 2026-08-10T20:30:00-04:00 |
| SenderName | NWS Burlington VT |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.22693824088ab7a964069589f6595566d200f354.002.1","noaa_urn:oid:2.49.0.1.840.0.44f7c3c8d549a8e68db33e04a6de0b6895b168bf.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 42 |
| Iem Unit | MPH |
| Iem City | 1 WNW Alburgh Center |
| Iem County | Grand Isle |
| Iem State | VT |
| Iem Wfo | BTV |
| MergedSources | [{"id":"iem_G_44.960_-73.290_1786404060000","source":"iem","severity":"low","severityValue":25,"timestamp":1786404060000,"latitude":44.96,"longitude":-73.29}] |
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 34/100, near Plattsburgh (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.