Right now
The most recent data we hold from NOAA arrived 75 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 22 June 2026 at 20:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 215 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 22 at 3:23PM EDT until June 22 at 4:15PM EDT by NWS Mount Holly NJ
Urban PEI: 16,201,871 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- September 2, 2026 · score 46 · 2.7 km
- June 22, 2026 · score 52 · 3.0 km
- July 10, 2026 · score 52 · 3.1 km
How we know
4 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 | 0.87/1 |
| Coordinates | 40.3085, -74.2715 |
| Nearest City | Marlboro (2 km) |
| Urban exposure index (PEI) | 16.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-22T19:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a88809ab2082d7cab62dc3f64f831b17 |
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: 2026-06-22T19:23:00.000Z.
First archived: 2026-06-22T19:36:22.717Z. 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 | Monmouth, NJ; Ocean, NJ; Burlington, NJ; Mercer, NJ; Monmouth, NJ; Ocean, NJ; Essex, NJ; Hudson, NJ; Union, NJ; Bronx, NY; Kings, NY; New York, NY; Queens, NY; Richmond, NY |
| Headline | Severe Thunderstorm Warning issued June 22 at 3:23PM EDT until June 22 at 4:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-22T16:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a88809ab2082d7cab62dc3f64f831b17131d477d.001.1","noaa_urn:oid:2.49.0.1.840.0.8c11f7bc3a67e7decb346ca0c2421a9bfcb4d893.002.1","noaa_urn:oid:2.49.0.1.840.0.80adbadf63a216bfe3f1106e7e11723b6150fc5b.001.1"] |
| Iem TypeSummary | D |
| Iem City | Holmesburg |
| Iem County | Philadelphia |
| Iem State | PA |
| Iem Wfo | PHI |
| Iem Remark | Multiple large tree branches and a tree snapped. Time estimated from radar. |
| MergedSources | [{"id":"iem_H_40.080_-74.810_1782154080000","source":"iem","severity":"low","severityValue":25,"timestamp":1782154080000,"latitude":40.08,"longitude":-74.81},{"id":"iem_H_40.080_-74.820_1782154080000","source":"iem","severity":"low","severityValue":25,"timestamp":1782154080000,"latitude":40.08,"longitude":-74.82},{"id":"iem_D_40.040_-75.030_1782152640000","source":"iem","severity":"low","severityValue":25,"timestamp":1782152640000,"latitude":40.04,"longitude":-75.03}] |
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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