Right now
The most recent data we hold from NOAA arrived 1 minute 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 2 August 2026 at 09:30 UTC. It is kept here as a record.
It is the 102nd strongest of the 196 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 August 1 at 11:26PM EDT until August 2 at 5:30AM EDT by NWS Blacksburg VA
Nearby, since 16 March 2026
- July 8, 2026 · score 22 · 4.3 km
- June 13, 2026 · score 43 · 6.6 km
- June 12, 2026 · score 43 · 6.6 km
How we know
13 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.71/1 |
| Coordinates | 36.5385, -80.4285 |
| Nearest City | Winston-Salem (52 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-08-02T03:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.8027ad01915638bd8ca1b9f15c540bde |
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: 2026-08-02T03:26:00.000Z.
First archived: 2026-08-02T04:31:41.457Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Stokes, NC; Surry, NC; Patrick, VA; Surry, NC; Carroll, VA; Floyd, VA; Franklin, VA; Henry, VA; Patrick, VA; Stokes, NC; Surry, NC; Yadkin, NC; Patrick, VA |
| Headline | Flash Flood Warning issued August 1 at 11:26PM EDT until August 2 at 5:30AM EDT by NWS Blacksburg VA |
| Expires | 2026-08-02T05:30:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8027ad01915638bd8ca1b9f15c540bde6817bbd4.001.1","noaa_urn:oid:2.49.0.1.840.0.38f8aa18f3bee3d763d04b3b2cf9ca184587960e.001.1","noaa_urn:oid:2.49.0.1.840.0.7f689831a7c79383de83bb908b35cf345f1cca29.001.1"] |
| Iem TypeSummary | F |
| Iem City | Pilot Mountain |
| Iem County | Surry |
| Iem State | NC |
| Iem Wfo | RNK |
| Iem Remark | Several vehicle water rescues ongoing in and around town, including East Pine Street, Foothill Farm Lane, Cleo Cain Road. |
| MergedSources | [{"id":"iem_F_36.350_-80.510_1785639120000","source":"iem","severity":"low","severityValue":25,"timestamp":1785639120000,"latitude":36.35,"longitude":-80.51},{"id":"iem_F_36.540_-80.510_1785644100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785644100000,"latitude":36.54,"longitude":-80.51},{"id":"iem_F_36.520_-80.600_1785642180000","source":"iem","severity":"low","severityValue":25,"timestamp":1785642180000,"latitude":36.52,"longitude":-80.6},{"id":"iem_F_36.540_-80.580_1785637560000","source":"iem","severity":"low","severityValue":25,"timestamp":1785637560000,"latitude":36.54,"longitude":-80.58},{"id":"iem_F_36.330_-80.500_1785636000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785636000000,"latitude":36.33,"longitude":-80.5},{"id":"iem_F_36.490_-80.500_1785640920000","source":"iem","severity":"low","severityValue":25,"timestamp":1785640920000,"latitude":36.49,"longitude":-80.5},{"id":"iem_F_36.390_-80.470_1785641100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785641100000,"latitude":36.39,"longitude":-80.47},{"id":"iem_F_36.480_-80.560_1785644040000","source":"iem","severity":"low","severityValue":25,"timestamp":1785644040000,"latitude":36.48,"longitude":-80.56},{"id":"iem_F_36.500_-80.610_1785641400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785641400000,"latitude":36.5,"longitude":-80.61},{"id":"iem_F_36.510_-80.570_1785640800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785640800000,"latitude":36.51,"longitude":-80.57},{"id":"iem_F_36.510_-80.570_1785638760000","source":"iem","severity":"low","severityValue":25,"timestamp":1785638760000,"latitude":36.51,"longitude":-80.57},{"id":"iem_F_36.380_-80.470_1785642960000","source":"iem","severity":"low","severityValue":25,"timestamp":1785642960000,"latitude":36.38,"longitude":-80.47}] |
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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