This alert expired on 8 August 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 64 recorded within 20 km of this point since 16 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 44 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 8 at 5:37PM EDT until August 8 at 6:15PM EDT by NWS Boston/Norton MA
An estimated 1,277,596 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 30, 2026 · score 52 · 8.3 km
- July 3, 2026 · score 48 · 16.1 km
- June 30, 2026 · score 52 · 18.2 km
How we know
Confirmed by 14 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 90 % 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 | 90% |
| Coordinates | 42.1026, -72.9068 |
| Nearest City | Westfield (13 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T21:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3a6d481bb1bb021f5db9550c7c000f6c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hartford, CT; Hampden, MA; Hampden, MA; Hampshire, MA |
| Headline | Severe Thunderstorm Warning issued August 8 at 5:37PM EDT until August 8 at 6:15PM EDT by NWS Boston/Norton MA |
| Expires | 2026-08-08T18:15:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3a6d481bb1bb021f5db9550c7c000f6cb49a3990.002.1","noaa_urn:oid:2.49.0.1.840.0.36c901b5111a50cafea7ea8e3456d6dff347ee53.002.1"] |
| Iem TypeSummary | D |
| Iem City | 4 E Livingston |
| Iem County | Columbia |
| Iem State | NY |
| Iem Wfo | ALY |
| Iem Remark | Tree down on the Taconic State Parkway northbound traffic at mile marker 82.2 in the town Taghkanic NY. |
| MergedSources | [{"id":"iem_D_42.340_-73.280_1786220940000","source":"iem","severity":"low","severityValue":25,"timestamp":1786220940000,"latitude":42.34,"longitude":-73.28},{"id":"iem_D_42.390_-73.620_1786219920000","source":"iem","severity":"low","severityValue":25,"timestamp":1786219920000,"latitude":42.39,"longitude":-73.62},{"id":"iem_D_42.120_-73.560_1786221720000","source":"iem","severity":"low","severityValue":25,"timestamp":1786221720000,"latitude":42.12,"longitude":-73.56},{"id":"iem_D_42.340_-73.630_1786219560000","source":"iem","severity":"low","severityValue":25,"timestamp":1786219560000,"latitude":42.34,"longitude":-73.63},{"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_42.320_-73.750_1786219320000","source":"iem","severity":"low","severityValue":25,"timestamp":1786219320000,"latitude":42.32,"longitude":-73.75},{"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_42.130_-73.650_1786222020000","source":"iem","severity":"low","severityValue":25,"timestamp":1786222020000,"latitude":42.13,"longitude":-73.65},{"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_42.310_-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_42.350_-73.300_1786220820000","source":"iem","severity":"low","severityValue":25,"timestamp":1786220820000,"latitude":42.35,"longitude":-73.3},{"id":"iem_D_42.150_-73.700_1786221840000","source":"iem","severity":"low","severityValue":25,"timestamp":1786221840000,"latitude":42.15,"longitude":-73.7}] |
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 Westfield (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.