Right now
The most recent data we hold from NOAA arrived 10 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 04:00 UTC. It is kept here as a record.
No stronger detection stands among the 45 recorded within 20 km of this point since 17 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 11:09PM EDT until July 3 at 12:00AM EDT by NWS Boston/Norton MA
Urban PEI: 1,099,216 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- July 3, 2026 · score 52 · 9.1 km
- June 30, 2026 · score 52 · 10.8 km
- May 19, 2026 · score 52 · 16.0 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 | 42.1860, -72.2820 |
| Nearest City | Palmer (5 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T03:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.555fc396b2970438cc40837529c49d67c8f580cf.001.1 |
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: 2026-07-03T03:09:00.000Z.
First archived: 2026-07-03T03:24:08.590Z. 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 | Franklin, MA; Hampden, MA; Hampshire, MA; Worcester, MA |
| Headline | Severe Thunderstorm Warning issued July 2 at 11:09PM EDT until July 3 at 12:00AM EDT by NWS Boston/Norton MA |
| Expires | 2026-07-03T00:00:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | Southampton |
| Iem County | Hampshire |
| Iem State | MA |
| Iem Wfo | BOX |
| Iem Remark | Tree down on wires. |
| MergedSources | [{"id":"iem_D_42.230_-72.730_1783046700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783046700000,"latitude":42.23,"longitude":-72.73}] |
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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