Right now
The most recent data we hold from NOAA arrived 39 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 5 July 2026 at 01:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 163 detections recorded within 20 km of this point since 17 March 2026. 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 July 4 at 8:16PM EDT until July 4 at 9:00PM EDT by NWS Boston/Norton MA
Urban PEI: 1,542,367 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- August 7, 2026 · score 52 · 3.5 km
- June 6, 2026 · score 52 · 5.9 km
- March 17, 2026 · score 52 · 6.3 km
How we know
7 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 | 0.89/1 |
| Coordinates | 40.5406, -74.8312 |
| Nearest City | Bridgewater (17 km) |
| Urban exposure index (PEI) | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T00:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.bea60d83384450ff1cceb95934423a6f |
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: 2026-07-05T00:16:00.000Z.
First archived: 2026-07-05T00:18:23.220Z. 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; Bergen, NJ; Passaic, NJ; Bronx, NY; New York, NY; Westchester, NY; Middlesex, CT; New Haven, CT; New London, CT and 8 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 8:16PM EDT until July 4 at 9:00PM EDT by NWS Boston/Norton MA |
| Expires | 2026-07-04T21:00:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bea60d83384450ff1cceb95934423a6f969d712c.001.1","noaa_urn:oid:2.49.0.1.840.0.f211bb529fde831845b6b54660352ec0bde3f052.001.1","noaa_urn:oid:2.49.0.1.840.0.a34fff077e002f7ae352a8af497d276bfbe5f623.001.1","noaa_urn:oid:2.49.0.1.840.0.52ead2af1398d445b3b62f67fdfee9fbc7987ff9.001.1","noaa_urn:oid:2.49.0.1.840.0.ece6c0fcfd9f4f292ee372d152d726db74867038.001.1","noaa_urn:oid:2.49.0.1.840.0.626f2c40d362a2b2ff151f82669d72ee73ce2d15.001.1","noaa_urn:oid:2.49.0.1.840.0.53c1d087d6c294a598416f1e935607b8b0d85ed2.002.1","noaa_urn:oid:2.49.0.1.840.0.3eb18073715885ccda440ffe6023013b931e6908.002.1","noaa_urn:oid:2.49.0.1.840.0.886c3bc2040b84a9d42f904da5bbc5d53cfe4068.001.1","noaa_urn:oid:2.49.0.1.840.0.8c93e307f36f10b21b6e8e06fcd73a162da14802.001.1","noaa_urn:oid:2.49.0.1.840.0.7baf655311625c60caa1a47bcc371afc33759425.001.1"] |
| Iem TypeSummary | D |
| Iem City | Blairstown Twp |
| Iem County | Warren |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | Several trees and wires down across Blairstown. Time estimated by radar. |
| Google News RssFeed | weather |
| Google News SourceName | CBS News |
| MergedSources | [{"id":"iem_D_41.040_-75.130_1783205520000","source":"iem","severity":"low","severityValue":25,"timestamp":1783205520000,"latitude":41.04,"longitude":-75.13},{"id":"iem_D_41.060_-75.070_1783205700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783205700000,"latitude":41.06,"longitude":-75.07},{"id":"iem_D_41.160_-74.740_1783206540000","source":"iem","severity":"low","severityValue":25,"timestamp":1783206540000,"latitude":41.16,"longitude":-74.74},{"id":"iem_D_41.050_-75.090_1783205700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783205700000,"latitude":41.05,"longitude":-75.09},{"id":"iem_D_40.980_-74.960_1783206600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783206600000,"latitude":40.98,"longitude":-74.96},{"id":"gnews_weather_495334_192","source":"google_news","severity":"medium","severityValue":40,"timestamp":1783205280000,"latitude":39.95,"longitude":-75.16}] |
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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