Right now
The most recent data we hold from NOAA arrived 5 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 6 July 2026 at 02:16 UTC. It is kept here as a record.
It is the 30th strongest of the 128 detections recorded within 20 km of this point since 11 March 2026. 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 5 at 10:07PM EDT until July 5 at 10:15PM EDT by NWS Mount Holly NJ
Urban PEI: 567,553 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- August 10, 2026 · score 48 · 5.0 km
- March 12, 2026 · score 48 · 7.9 km
- August 8, 2026 · score 46 · 8.2 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 48 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) | 48 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 39.4991, -76.0024 |
| Nearest City | Aberdeen (14 km) |
| Urban exposure index (PEI) | 567.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T02:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9c76f4ee9964f923e557005a682047ab |
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: 2026-07-06T02:07:00.000Z.
First archived: 2026-07-06T02:10:43.382Z. 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 | Queen Anne's, MD; Talbot, MD; Berks, PA; Chester, PA; Montgomery, PA; New Castle, DE; Gloucester, NJ; Salem, NJ; Chester, PA; Delaware, PA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 5 at 10:07PM EDT until July 5 at 10:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-05T22:16:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9c76f4ee9964f923e557005a682047abe085ea8c.001.1","noaa_urn:oid:2.49.0.1.840.0.6599449bb24b68c8c9635ebe66384a149d82995a.001.1","noaa_urn:oid:2.49.0.1.840.0.8738f70a323c9ac705b78b95aa3105367fc15d54.001.1","noaa_urn:oid:2.49.0.1.840.0.e331e09fcbc7780b9bca8a737a3287e525a25325.002.1","noaa_urn:oid:2.49.0.1.840.0.b14b473ae0b7bd2853746fc2fcd55c48ec306570.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 0.75 |
| Iem Unit | inch |
| Iem City | Hampstead |
| Iem County | Carroll |
| Iem State | MD |
| Iem Wfo | LWX |
| MergedSources | [{"id":"iem_M_39.300_-76.360_1783299600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783299600000,"latitude":39.3,"longitude":-76.36},{"id":"iem_F_40.030_-76.320_1783301100000","source":"iem","severity":"low","severityValue":25,"timestamp":1783301100000,"latitude":40.03,"longitude":-76.32},{"id":"iem_H_39.620_-76.860_1783294080000","source":"iem","severity":"low","severityValue":25,"timestamp":1783294080000,"latitude":39.62,"longitude":-76.86}] |
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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