Right now
The most recent data we hold from NOAA arrived 3 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 3 July 2026 at 03:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 35 detections recorded within 20 km of this point since 1 April 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 10:34PM EDT until July 2 at 11:15PM EDT by NWS Boston/Norton MA
Urban PEI: 704,611 within a heuristic 50 km radius; not unique people.
Nearby, since 1 April 2026
- July 3, 2026 · score 48 · 2.5 km
- July 3, 2026 · score 48 · 5.6 km
- June 30, 2026 · score 48 · 12.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 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) | 48 / 100 |
| Legacy data-support index | 0.78/1 |
| Coordinates | 42.2497, -73.0367 |
| Nearest City | Westfield (27 km) |
| Urban exposure index (PEI) | 704.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T02:34:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1c3ffbe8560ef2cbacd45e5b2161a358 |
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: 2026-07-03T02:34:00.000Z.
First archived: 2026-07-03T02:41:54.137Z. 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 | Hampden, MA; Hampshire, MA; Berkshire, MA |
| Headline | Severe Thunderstorm Warning issued July 2 at 10:34PM EDT until July 2 at 11:15PM EDT by NWS Boston/Norton MA |
| Expires | 2026-07-02T23:15:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1c3ffbe8560ef2cbacd45e5b2161a35886272044.001.1","noaa_urn:oid:2.49.0.1.840.0.228b7a953415c2fa9ea93c07dbfda44c391c7058.002.1"] |
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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