Right now
The most recent data we hold from NOAA arrived 7 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
9 other detections within 20 km in the last 24 hours, the nearest 3 km from here.
This alert expired on 22 September 2026 at 21:30 UTC. It is kept here as a record.
It is the 96th strongest of the 153 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 22 at 2:23PM EDT until September 22 at 5:30PM EDT by NWS Wakefield VA
Urban PEI: 1,243,285 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 8, 2026 · score 52 · 3.2 km
- May 25, 2026 · score 52 · 3.3 km
- July 22, 2026 · score 52 · 4.7 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 46 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 46 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 37.1677, -76.5008 |
| Nearest City | Hampton (20 km) |
| Urban exposure index (PEI) | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-22T18:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b6d00420379a0cd5fd434d60bd6e885aa71eb24f.001.1 |
Physical priority index · v5. 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: 2026-09-22T18:23:00.000Z.
First archived: 2026-09-22T18:29:43.910Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-22T18:51:39.778Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | City of Chesapeake, VA; City of Norfolk, VA; City of Portsmouth, VA; City of Suffolk, VA; York, VA; City of Newport News, VA; City of Poquoson, VA; Gloucester, VA; York, VA and 1 more areas |
| Headline | Flash Flood Warning issued September 22 at 2:23PM EDT until September 22 at 5:30PM EDT by NWS Wakefield VA |
| Expires | 2026-09-22T17:30:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b6d00420379a0cd5fd434d60bd6e885aa71eb24f.001.1","noaa_urn:oid:2.49.0.1.840.0.9c09135540aa71fe22a6653483a321407998b0ac.001.1","noaa_urn:oid:2.49.0.1.840.0.5b980aaccdfcba717df69264d4c9f33759ad6622.001.1","noaa_urn:oid:2.49.0.1.840.0.bc2572900533d98d80c0169e51a3b2cd757e6433.001.1"] |
| Iem TypeSummary | F |
| Iem City | Harris Grove |
| Iem County | York |
| Iem State | VA |
| Iem Wfo | AKQ |
| Iem Remark | High water on US-17 near Fort Eustis Blvd. |
| MergedSources | [{"id":"iem_F_37.230_-76.530_1790098380000","source":"iem","severity":"low","severityValue":25,"timestamp":1790098380000,"latitude":37.23,"longitude":-76.53},{"id":"iem_F_37.550_-76.490_1790093400000","source":"iem","severity":"low","severityValue":25,"timestamp":1790093400000,"latitude":37.55,"longitude":-76.49},{"id":"iem_F_37.160_-76.460_1790100840000","source":"iem","severity":"low","severityValue":25,"timestamp":1790100840000,"latitude":37.16,"longitude":-76.46},{"id":"iem_F_37.120_-76.520_1790100360000","source":"iem","severity":"low","severityValue":25,"timestamp":1790100360000,"latitude":37.12,"longitude":-76.52},{"id":"iem_F_37.600_-76.570_1790093280000","source":"iem","severity":"low","severityValue":25,"timestamp":1790093280000,"latitude":37.6,"longitude":-76.57},{"id":"iem_F_37.190_-76.490_1790100600000","source":"iem","severity":"low","severityValue":25,"timestamp":1790100600000,"latitude":37.19,"longitude":-76.49}] |
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.
Review the area, threshold and delivery channel in your account.
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