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.
This alert expired on 5 July 2026 at 02:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued July 4 at 5:58PM EDT until July 4 at 10:00PM EDT by NWS Blacksburg VA
Urban PEI: 145,329 within a heuristic 50 km radius; not unique people.
How we know
12 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 37.4000, -78.7000 |
| Nearest City | Lynchburg (39 km) |
| Urban exposure index (PEI) | 145.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T21:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.a15075a34c27d48c6b1286b474896b96 |
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: 2026-07-04T21:58:00.000Z.
First archived: 2026-07-04T23:00:29.418Z. 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 | Amherst, VA; Appomattox, VA; Bedford, VA; Buckingham, VA; Campbell, VA; Carroll, VA; Charlotte, VA; Floyd, VA; Franklin, VA; Halifax, VA; Henry, VA; Patrick, VA; Pittsylvania, VA; City of Danville, VA; City of Galax, VA; City of Lynchburg, VA; City of Martinsville, VA; Amelia, VA; Brunswick, VA; Caroline, VA; Charles City, VA; Chesterfield, VA; Cumberland, VA; Dinwiddie, VA; Essex, VA; Fluvanna, VA; Gloucester, VA; Goochland, VA; Greensville, VA; Hanover, VA; Henrico, VA; James City, VA; King and Queen, VA; King William, VA; Lancaster, VA; Louisa, VA; Lunenburg, VA; Mathews, VA; Mecklenburg, VA; Middlesex, VA; New Kent, VA; Northumberland, VA; Nottoway, VA; Powhatan, VA; Prince Edward, VA; Prince George, VA; Richmond, VA; Surry, VA; Sussex, VA; Westmoreland, VA; York, VA; City of Colonial Heights, VA; City of Emporia, VA; City of Hopewell, VA; City of Petersburg, VA; City of Poquoson, VA; City of Richmond, VA; City of Williamsburg, VA |
| Headline | Severe Thunderstorm Watch issued July 4 at 5:58PM EDT until July 4 at 10:00PM EDT by NWS Blacksburg VA |
| Expires | 2026-07-04T22:00:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a15075a34c27d48c6b1286b474896b96430d1763.002.1","noaa_urn:oid:2.49.0.1.840.0.cb47b98572f9e735448561b6179f42ae450a4853.003.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 46 |
| Iem Unit | MPH |
| Iem City | Rustburg |
| Iem County | Campbell |
| Iem State | VA |
| Iem Wfo | RNK |
| Iem Remark | Mesonet station FW3585 Rustburg. |
| MergedSources | [{"id":"iem_D_37.870_-78.860_1783201020000","source":"iem","severity":"low","severityValue":25,"timestamp":1783201020000,"latitude":37.87,"longitude":-78.86},{"id":"iem_D_37.510_-79.050_1783199160000","source":"iem","severity":"low","severityValue":25,"timestamp":1783199160000,"latitude":37.51,"longitude":-79.05},{"id":"iem_D_37.990_-78.320_1783198800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198800000,"latitude":37.99,"longitude":-78.32},{"id":"iem_H_37.120_-79.300_1783200360000","source":"iem","severity":"low","severityValue":25,"timestamp":1783200360000,"latitude":37.12,"longitude":-79.3},{"id":"iem_D_37.990_-78.360_1783196100000","source":"iem","severity":"low","severityValue":25,"timestamp":1783196100000,"latitude":37.99,"longitude":-78.36},{"id":"iem_D_37.870_-78.860_1783198620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198620000,"latitude":37.87,"longitude":-78.86},{"id":"iem_H_37.100_-79.290_1783199580000","source":"iem","severity":"low","severityValue":25,"timestamp":1783199580000,"latitude":37.1,"longitude":-79.29},{"id":"iem_D_37.220_-79.150_1783200480000","source":"iem","severity":"low","severityValue":25,"timestamp":1783200480000,"latitude":37.22,"longitude":-79.15},{"id":"iem_D_37.660_-79.160_1783200120000","source":"iem","severity":"low","severityValue":25,"timestamp":1783200120000,"latitude":37.66,"longitude":-79.16},{"id":"iem_D_37.580_-79.050_1783199700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783199700000,"latitude":37.58,"longitude":-79.05},{"id":"iem_G_37.280_-79.100_1783199700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783199700000,"latitude":37.28,"longitude":-79.1}] |
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.
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