Right now
The most recent data we hold from NOAA arrived 8 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 24 June 2026 at 00:00 UTC. It is kept here as a record.
It is the 56th strongest of the 250 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 22 June 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 23 at 11:53AM EDT until June 23 at 8:00PM EDT by NWS Mount Holly NJ
Urban PEI: 56,020 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 28, 2026 · score 51 · 0.0 km
- July 10, 2026 · score 39 · 7.9 km
- March 16, 2026 · score 51 · 7.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.78/1 |
| Coordinates | 39.0000, -75.7750 |
| Nearest City | Dover (28 km) |
| Urban exposure index (PEI) | 56.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-23T15:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.0a8fbb5ae8edd15153d4ff43572f0a09 |
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: 2026-06-23T15:53:00.000Z.
First archived: 2026-06-23T15:58:50.970Z. 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 Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM; Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM; Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM; Sussex, DE; Caroline, MD; Talbot, MD; Cape May, NJ; Dorchester, MD; Somerset, MD; Wicomico, MD; Worcester, MD; Bertie, NC; Camden, NC; Chowan, NC; Currituck, NC; Gates, NC; Hertford, NC; Northampton, NC; Pasquotank, NC; Perquimans, NC; Accomack, VA; Amelia, VA; Brunswick, VA; Caroline, VA; Charles City, VA; Chesterfield, VA; Dinwiddie, VA; Essex, VA; Gloucester, VA; Goochland, VA; Greensville, VA; Hanover, VA; Henrico, VA; Isle of Wight, VA; James City, VA; King and Queen, VA; King William, VA; Lancaster, VA; Lunenburg, VA; Mathews, VA; Mecklenburg, VA; Middlesex, VA; New Kent, VA; Northampton, VA; Northumberland, VA; Nottoway, VA; Powhatan, VA; Prince George, VA; Richmond, VA; Southampton, VA; Surry, VA; Sussex, VA; Westmoreland, VA; York, VA; City of Chesapeake, VA; City of Colonial Heights, VA; City of Emporia, VA; City of Franklin, VA; City of Hampton, VA; City of Hopewell, VA; City of Newport News, VA; City of Norfolk, VA; City of Petersburg, VA; City of Poquoson, VA; City of Portsmouth, VA; City of Richmond, VA; City of Suffolk, VA; City of Virginia Beach, VA; City of Williamsburg, VA and 1 more areas |
| Headline | Severe Thunderstorm Watch issued June 23 at 11:53AM EDT until June 23 at 8:00PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-23T20:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | false |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0a8fbb5ae8edd15153d4ff43572f0a09550e6113.002.1","noaa_urn:oid:2.49.0.1.840.0.0a8fbb5ae8edd15153d4ff43572f0a09550e6113.001.1","noaa_urn:oid:2.49.0.1.840.0.23e73df72a166ec25a0fb59705ef721f96d86cb0.001.1","noaa_urn:oid:2.49.0.1.840.0.23e73df72a166ec25a0fb59705ef721f96d86cb0.002.1"] |
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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