Calamity
MediumSevere WeatherCS: 39 · v1

Severe Weather in United States

United StatesNOAA

Right now

The most recent data we hold from NOAA arrived 3 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 7 July 2026 at 02:00 UTC. It is kept here as a record.

It is the 26th strongest of the 116 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 6 July 2026. 5 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued July 6 at 8:09PM EDT until July 6 at 10:00PM EDT by NWS Wakefield VA

Urban PEI: 89,604 within a heuristic 50 km radius; not unique people.

Nearby, since 16 March 2026

How we know

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

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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)39 / 100
Legacy data-support index0.92/1
Coordinates37.1009, -77.8398
Nearest CityPetersburg (42 km)
Urban exposure index (PEI)89.6K within 50 km
Impact Tiersignificant
Timestamp2026-07-07T00:09:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.895373a486301be2fb5fe25a7555e391

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: 2026-07-07T00:09:00.000Z.

First archived: 2026-07-07T01:37:02.987Z. 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

35
intensity
55
Urban PEI term
0
Scenario weight
80
Recorded reference / batch anomaly

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescGoochland, VA; Henrico, VA; Amelia, VA; Chesterfield, VA; Prince George, VA; City of Colonial Heights, VA; City of Hopewell, VA; Chesterfield, VA; Henrico, VA; City of Richmond, VA and 1 more areas
HeadlineFlash Flood Warning issued July 6 at 8:09PM EDT until July 6 at 10:00PM EDT by NWS Wakefield VA
Expires2026-07-06T22:00:00-04:00
SenderNameNWS Wakefield VA
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.895373a486301be2fb5fe25a7555e391c8cae25a.001.1","noaa_urn:oid:2.49.0.1.840.0.5b92f35377cede98a14037ff5209cbf2d5c4eaa5.001.1","noaa_urn:oid:2.49.0.1.840.0.a9d455d0dcbe7a3842d6c3d6d7eb1d91f97202dd.001.1","noaa_urn:oid:2.49.0.1.840.0.6cbba9b2e2712b4491d1d9af8726643b7fe0f23c.001.1"]
Iem TypeSummaryF
Iem City1 ESE Chester
Iem CountyChesterfield
Iem StateVA
Iem WfoAKQ
Iem RemarkA caller reported flooding along Executive Drive in Chester.
MergedSources[{"id":"iem_L_37.340_-77.350_1783377900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783377900000,"latitude":37.34,"longitude":-77.35},{"id":"iem_D_37.470_-77.400_1783377600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783377600000,"latitude":37.47,"longitude":-77.4},{"id":"iem_F_37.370_-77.500_1783379400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783379400000,"latitude":37.37,"longitude":-77.5},{"id":"iem_F_37.590_-77.820_1783383600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783383600000,"latitude":37.59,"longitude":-77.82},{"id":"iem_E_37.410_-77.650_1783381320000","source":"iem","severity":"low","severityValue":25,"timestamp":1783381320000,"latitude":37.41,"longitude":-77.65},{"id":"iem_F_37.520_-77.380_1783384380000","source":"iem","severity":"low","severityValue":25,"timestamp":1783384380000,"latitude":37.52,"longitude":-77.38},{"id":"iem_D_37.450_-77.610_1783378500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783378500000,"latitude":37.45,"longitude":-77.61},{"id":"iem_D_36.660_-78.180_1783378500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783378500000,"latitude":36.66,"longitude":-78.18},{"id":"iem_F_37.380_-77.730_1783383000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783383000000,"latitude":37.38,"longitude":-77.73},{"id":"iem_F_37.340_-77.410_1783381920000","source":"iem","severity":"low","severityValue":25,"timestamp":1783381920000,"latitude":37.34,"longitude":-77.41}]

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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