Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 30 June 2026 at 23:06 UTC. It is kept here as a record.
No stronger detection stands among the 42 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. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 30 at 6:57PM EDT until June 30 at 7:00PM EDT by NWS Boston/Norton MA
Urban PEI: 1,305,121 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- August 8, 2026 · score 52 · 8.3 km
- June 30, 2026 · score 52 · 15.9 km
- June 30, 2026 · score 48 · 18.0 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 52 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Legacy data-support index | 0.84/1 |
| Coordinates | 42.0523, -72.9812 |
| Nearest City | Westfield (21 km) |
| Urban exposure index (PEI) | 1.3M within 50 km |
| Impact Tier | significant |
| Date | 2026-06-30 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0df33f72e3e1637acb6b47c83ec90404 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-30 — time not reported.
First archived: 2026-06-30T22:58:15.989Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hartford, CT; Hampden, MA; Hampshire, MA; Hartford, CT; Tolland, CT; Hampden, MA; Hampshire, MA; Litchfield, CT; Berkshire, MA |
| Headline | Severe Thunderstorm Warning issued June 30 at 6:57PM EDT until June 30 at 7:00PM EDT by NWS Boston/Norton MA |
| Expires | 2026-06-30T19:06:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0df33f72e3e1637acb6b47c83ec90404000c4a5d.001.1","noaa_urn:oid:2.49.0.1.840.0.f1cd87ea6fe9a95df1eafdc72e7ef40cedefce05.001.1","noaa_urn:oid:2.49.0.1.840.0.95d49107326c99772671fdae2f0f317de2296bd5.001.1"] |
| Iem TypeSummary | D |
| Iem City | 4 NNE Pittsfield |
| Iem County | Berkshire |
| Iem State | MA |
| Iem Wfo | ALY |
| Iem Remark | Tree down on wires along Miner Road in Lanesborough. Time estimated from radar. |
| MergedSources | [{"id":"iem_D_42.510_-73.240_1782855600000","source":"iem","severity":"low","severityValue":25,"timestamp":1782855600000,"latitude":42.51,"longitude":-73.24}] |
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 8 March 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.
Review the area, threshold and delivery channel in your account.
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