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 15 June 2026 at 02:00 UTC. It is kept here as a record.
It is the 47th strongest of the 129 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 11 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 14 at 9:04PM EDT until June 14 at 10:00PM EDT by NWS Mount Holly NJ
Urban PEI: 179,048 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- August 7, 2026 · score 37 · 6.6 km
- July 10, 2026 · score 43 · 8.6 km
- August 27, 2026 · score 43 · 10.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 40.0898, -76.4779 |
| Nearest City | Lancaster (15 km) |
| Urban exposure index (PEI) | 179.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-15T01:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8b74c909207232c3f06d134b9da17d60 |
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: 2026-06-15T01:04:00.000Z.
First archived: 2026-06-15T01:05:39.208Z. 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 | Sussex, DE; Caroline, MD; Baltimore, MD; Carroll, MD; Harford, MD; Baltimore City, MD; Luzerne, PA and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 14 at 9:04PM EDT until June 14 at 10:00PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-14T22:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8b74c909207232c3f06d134b9da17d6009ff491f.001.1","noaa_urn:oid:2.49.0.1.840.0.8f08f52bc1388b19e6fac39890892e2aa44829aa.001.1","noaa_urn:oid:2.49.0.1.840.0.c297dd0de7dcdf878ba0bdc60db208d65654d374.001.1","noaa_urn:oid:2.49.0.1.840.0.30200878ff7a0c2777e75425dffd832cc0dfaf22.002.1","noaa_urn:oid:2.49.0.1.840.0.4051ff2b8a0c2e5f40123a0125c0ba5b85c443dc.001.1","noaa_urn:oid:2.49.0.1.840.0.bf9ef66dfa988bda98d62a3161e8e033b852bcfd.001.1","noaa_urn:oid:2.49.0.1.840.0.db6148ef5b1f1a0d37b6a0f095035feed7c46750.001.1","noaa_urn:oid:2.49.0.1.840.0.481823e6122433c16c68b45d15e8519a5024e3bc.001.1"] |
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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