Right now
The most recent data we hold from NOAA arrived 2 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 17 March 2026 at 03:00 UTC. It is kept here as a record.
It is the 77th strongest of the 164 detections recorded within 20 km of this point since 17 March 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 10:14PM EDT until March 16 at 11:00PM EDT by NWS Mount Holly NJ
Urban PEI: 49,516 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- June 22, 2026 · score 58 · 17.5 km
- July 19, 2026 · score 43 · 20.2 km
- July 28, 2026 · score 67 · 22.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 38.7347, -75.8854 |
| Nearest City | Easton (17 km) |
| Urban exposure index (PEI) | 49.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T02:14:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ce7636a8114046738f7840778b578ffc |
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: 2026-03-17T02:14:00.000Z.
First archived: 2026-03-17T02:16:14.201Z. 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 | Berks, PA; Chester, PA; Montgomery, PA; Kent, DE; New Castle, DE; Sussex, DE; Caroline, MD; Kent, MD; Queen Anne's, MD; Talbot, MD; New Castle, DE; Kent, MD and 5 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 10:14PM EDT until March 16 at 11:00PM EDT by NWS Mount Holly NJ |
| Expires | 2026-03-16T23:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ce7636a8114046738f7840778b578ffc8a8a758d.001.1","noaa_urn:oid:2.49.0.1.840.0.845f9e6bc5689408a41189a30b5084069f629f0a.001.1","noaa_urn:oid:2.49.0.1.840.0.27cde2316d7713ca964493d28eb8b8bc4f6d9f97.001.1","noaa_urn:oid:2.49.0.1.840.0.0cf851d3fc8e90d858c09db5990a3453e28009f6.001.1","noaa_urn:oid:2.49.0.1.840.0.89644798b2d8c92e6487fb46968e1b00ba27e203.001.1","noaa_urn:oid:2.49.0.1.840.0.94cdb5d93f54a5678c55acc4cfb55a66f2ed8304.001.1","noaa_urn:oid:2.49.0.1.840.0.8acf42f3c561725a6ed1b1e7ceabd8fdd4484fd8.001.1","noaa_urn:oid:2.49.0.1.840.0.abca594f2c442f596fdd5fa2f9bb1f050565623d.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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