Calamity
HighSevere WeatherCS: 54 · v4 (historical)

Severe Weather near Hopewell

United StatesNOAA

Right now

The most recent data we hold from NOAA arrived 14 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 13 September 2026 at 02:15 UTC. It is kept here as a record.

It is the 4th strongest of the 120 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 37 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued September 12 at 7:53PM EDT until September 12 at 10:15PM EDT by NWS Wakefield VA

Urban PEI: 502,084 within a heuristic 50 km radius; not unique people.

Nearby, since 17 March 2026

How we know

3 recorded sources include NOAA; independence is not established by this count.

Our own score for this event is 54 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityHigh
Calamity Score (ours)54 / 100
Legacy data-support index0.91/1
Coordinates37.3148, -77.1810
Nearest CityHopewell (10 km)
Urban exposure index (PEI)502.1K within 50 km
Impact Tiersevere
Timestamp2026-09-12T23:53:00.000Z
Sourcehttps://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.fd8e4a02045ab319d029200ac0e56b56c6ac47f7.001.1

Physical priority index · v4 (historical). 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: 2026-09-12T23:53:00.000Z.

First archived: 2026-09-12T23:57:59.200Z. 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

50
intensity
85
Urban PEI term
0
Scenario weight
80
Recorded reference / batch anomaly

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescPrince George, VA; Surry, VA; Sussex, VA; Charles City, VA; Chesterfield, VA; Henrico, VA; City of Richmond, VA
HeadlineFlash Flood Warning issued September 12 at 7:53PM EDT until September 12 at 10:15PM EDT by NWS Wakefield VA
Expires2026-09-12T22:15:00-04:00
SenderNameNWS Wakefield VA
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.fd8e4a02045ab319d029200ac0e56b56c6ac47f7.001.1","noaa_urn:oid:2.49.0.1.840.0.6e90ec7a5c3dbc88a7bc2a238f1c39c76ed798e6.001.1"]
Spc ReportTypetornado
Spc SpeedUNK
Spc Location1 ESE Spring Grove
Spc CountySurry
Spc StateVA
Spc CommentsStorm survey conducted by NWS employee found tornado damage consistent with an EF-0 along VA-10 east of Spring Grove. Time is estimated based on radar. (AKQ)
Iem TypeSummaryT
Iem City1 ESE Spring Grove
Iem CountySurry
Iem StateVA

Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

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.

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