This alert expired on 26 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 107 recorded within 20 km of this point since 17 March 2026 — 11 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 June 26 at 5:52PM EDT until June 26 at 6:15PM EDT by NWS Boston/Norton MA
An estimated 4,220,054 people live within 50 km of this point.
Nearby, since 17 March 2026
- March 17, 2026 · score 52 · 4.2 km
- July 16, 2026 · score 52 · 5.9 km
- June 26, 2026 · score 52 · 8.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 82 % 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) | 52 / 100 |
| Our confidence | 82% |
| Coordinates | 42.7057, -71.3468 |
| Nearest City | Dracut (6 km) |
| Population Exposed | 4.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-26T21:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.70ed9d6381c0d4b0983694436ec14dbe |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hampden, MA; Worcester, MA; Essex, MA; Rockingham, NH and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 26 at 5:52PM EDT until June 26 at 6:15PM EDT by NWS Boston/Norton MA |
| Expires | 2026-06-26T18:15:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.70ed9d6381c0d4b0983694436ec14dbe6c50d3cf.001.1","noaa_urn:oid:2.49.0.1.840.0.9ccabb0fbd3b455ceb93c3dfc0b45285f2c7bf36.001.1","noaa_urn:oid:2.49.0.1.840.0.3a5e73cdd0f843a4242306526a50f5489d02671f.001.1","noaa_urn:oid:2.49.0.1.840.0.b34608bcc872ba15bccd6ca8abbc20ab32cc4f9a.001.1"] |
| Google News RssFeed | weather |
| Google News SourceName | NBC Boston |
| MergedSources | [{"id":"gnews_weather_495137_162","source":"google_news","severity":"medium","severityValue":40,"timestamp":1782493473000,"latitude":42.36,"longitude":-71.06}] |
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.
Want to know when something happens near Dracut?
Calamity.live data shows a weather event with CalamityScore 52/100, near Dracut (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.