Right now
The most recent data we hold from NOAA arrived 4 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 10 July 2026 at 02:00 UTC. It is kept here as a record.
It is the 79th strongest of the 294 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 6 July 2026. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued July 9 at 2:31PM EDT until July 9 at 10:00PM EDT by NWS Wakefield VA
Urban PEI: 683,111 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- July 9, 2026 · score 48 · 0.0 km
- June 6, 2026 · score 48 · 0.0 km
- June 23, 2026 · score 52 · 2.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.80/1 |
| Coordinates | 39.0000, -76.1600 |
| Nearest City | Easton (26 km) |
| Urban exposure index (PEI) | 683.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-09T18:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.51046ec97f539940cff3eb2b4f89bfc5 |
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: 2026-07-09T18:31:00.000Z.
First archived: 2026-07-09T21:46:02.530Z. 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 | Dorchester, MD; Somerset, MD; Wicomico, MD; Worcester, MD; Accomack, VA; Caroline, VA; Essex, VA; Fluvanna, VA; Goochland, VA; Hanover, VA; Henrico, VA; King and Queen, VA; King William, VA; Lancaster, VA; Louisa, VA; Middlesex, VA; New Kent, VA; Northumberland, VA; Richmond, VA; Westmoreland, VA; City of Richmond, VA; District of Columbia, DC; Anne Arundel, MD; Baltimore, MD; Calvert, MD; Carroll, MD; Cecil, MD; Charles, MD; Frederick, MD; Harford, MD; Howard, MD; Montgomery, MD; Prince Georges, MD; St. Marys, MD; Washington, MD; Baltimore City, MD; Arlington, VA; Clarke, VA; Culpeper, VA; Fairfax, VA; Fauquier, VA; Frederick, VA; Greene, VA; King George, VA; Loudoun, VA; Madison, VA; Orange, VA; Page, VA; Prince William, VA; Rappahannock, VA; Rockingham, VA; Shenandoah, VA; Spotsylvania, VA; Stafford, VA; Warren, VA; City of Alexandria, VA; City of Fairfax, VA; City of Falls Church, VA; City of Fredericksburg, VA; City of Harrisonburg, VA; City of Manassas, VA; City of Manassas Park, VA; City of Winchester, VA; Berkeley, WV; Jefferson, WV; Morgan, WV; Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE and 2 more areas |
| Headline | Severe Thunderstorm Watch issued July 9 at 2:31PM EDT until July 9 at 10:00PM EDT by NWS Wakefield VA |
| Expires | 2026-07-09T22:00:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | false |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.51046ec97f539940cff3eb2b4f89bfc5b5f12368.001.1","noaa_urn:oid:2.49.0.1.840.0.682efa435d788afe830df0757e698a6a7d8da551.001.1","noaa_urn:oid:2.49.0.1.840.0.e45d2e407135920f116b7f05f1947e15b2556429.002.1","noaa_urn:oid:2.49.0.1.840.0.e45d2e407135920f116b7f05f1947e15b2556429.001.1","noaa_urn:oid:2.49.0.1.840.0.682efa435d788afe830df0757e698a6a7d8da551.002.1"] |
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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