This alert expired on 8 August 2026 at 22:45 UTC. It is kept here as a record.
No stronger detection stands among the 72 recorded within 20 km of this point since 19 May 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 56 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 8 at 6:06PM EDT until August 8 at 6:45PM EDT by NWS Boston/Norton MA
An estimated 1,194,105 people live within 50 km of this point.
Nearby, since 19 May 2026
- May 19, 2026 · score 52 · 15.8 km
- August 8, 2026 · score 52 · 16.3 km
- May 19, 2026 · score 52 · 16.7 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 91 % 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 | 91% |
| Coordinates | 42.0765, -72.4378 |
| Nearest City | East Longmeadow (6 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T22:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.995c333d23580ef2e1eeeb719c74d6e8 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Tolland, CT; Franklin, MA; Hampden, MA; Hampshire, MA; Worcester, MA; Hartford, CT; Hampden, MA |
| Headline | Severe Thunderstorm Warning issued August 8 at 6:06PM EDT until August 8 at 6:45PM EDT by NWS Boston/Norton MA |
| Expires | 2026-08-08T18:45:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.995c333d23580ef2e1eeeb719c74d6e802153332.002.1","noaa_urn:oid:2.49.0.1.840.0.95241573903048d0ec402f1ace4aa754d951adeb.001.1"] |
| Iem TypeSummary | D |
| Iem City | Blandford |
| Iem County | Hampden |
| Iem State | MA |
| Iem Wfo | BOX |
| Iem Remark | Tree down on wires, blandford Turnpike (Rte 23). |
| MergedSources | [{"id":"iem_D_42.320_-73.270_1786221060000","source":"iem","severity":"low","severityValue":25,"timestamp":1786221060000,"latitude":42.32,"longitude":-73.27},{"id":"iem_D_42.300_-73.240_1786221420000","source":"iem","severity":"low","severityValue":25,"timestamp":1786221420000,"latitude":42.3,"longitude":-73.24},{"id":"iem_D_42.330_-73.230_1786221240000","source":"iem","severity":"low","severityValue":25,"timestamp":1786221240000,"latitude":42.33,"longitude":-73.23},{"id":"iem_D_42.300_-72.770_1786223940000","source":"iem","severity":"low","severityValue":25,"timestamp":1786223940000,"latitude":42.3,"longitude":-72.77},{"id":"iem_D_42.310_-73.230_1786221300000","source":"iem","severity":"low","severityValue":25,"timestamp":1786221300000,"latitude":42.31,"longitude":-73.23},{"id":"iem_D_42.140_-73.070_1786223160000","source":"iem","severity":"low","severityValue":25,"timestamp":1786223160000,"latitude":42.14,"longitude":-73.07},{"id":"iem_D_42.180_-72.930_1786224180000","source":"iem","severity":"low","severityValue":25,"timestamp":1786224180000,"latitude":42.18,"longitude":-72.93}] |
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 52/100, near East Longmeadow (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.