This alert expired on 2 August 2026 at 12:30 UTC. It is kept here as a record.
No stronger detection stands among the 176 recorded within 20 km of this point since 16 March 2026 — 66 others scored the same. Another comparable one was recorded here earlier the same day. 44 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 2 at 4:10AM EDT until August 2 at 8:30AM EDT by NWS Blacksburg VA
An estimated 241,218 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 10, 2026 · score 16 · 4.4 km
- June 11, 2026 · score 16 · 7.0 km
- June 13, 2026 · score 43 · 10.2 km
How we know
Confirmed by 30 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 91% |
| Coordinates | 36.4583, -80.5533 |
| Nearest City | Winston-Salem (49 km) |
| Population Exposed | 241.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-02T08:10:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f501a7a5991c4b12af41373497be6b254ac4b30b.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Surry, NC |
| Headline | Flash Flood Warning issued August 2 at 4:10AM EDT until August 2 at 8:30AM EDT by NWS Blacksburg VA |
| Expires | 2026-08-02T08:30:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| 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_36.720_-80.520_1785646800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785646800000,"latitude":36.72,"longitude":-80.52},{"id":"iem_F_36.510_-80.590_1785647100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785647100000,"latitude":36.51,"longitude":-80.59},{"id":"iem_F_36.520_-80.440_1785644100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785644100000,"latitude":36.52,"longitude":-80.44},{"id":"iem_F_36.520_-80.480_1785644100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785644100000,"latitude":36.52,"longitude":-80.48},{"id":"iem_F_36.500_-80.590_1785646800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785646800000,"latitude":36.5,"longitude":-80.59},{"id":"iem_F_36.500_-80.600_1785645300000","source":"iem","severity":"low","severityValue":25,"timestamp":1785645300000,"latitude":36.5,"longitude":-80.6},{"id":"iem_F_36.510_-80.470_1785645600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785645600000,"latitude":36.51,"longitude":-80.47},{"id":"iem_F_36.500_-80.600_1785654000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785654000000,"latitude":36.5,"longitude":-80.6},{"id":"iem_F_36.500_-80.540_1785646800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785646800000,"latitude":36.5,"longitude":-80.54},{"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_36.500_-80.460_1785645900000","source":"iem","severity":"low","severityValue":25,"timestamp":1785645900000,"latitude":36.5,"longitude":-80.46},{"id":"iem_F_36.400_-80.560_1785648600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785648600000,"latitude":36.4,"longitude":-80.56},{"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_36.680_-80.500_1785646800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785646800000,"latitude":36.68,"longitude":-80.5},{"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_36.490_-80.400_1785645900000","source":"iem","severity":"low","severityValue":25,"timestamp":1785645900000,"latitude":36.49,"longitude":-80.4},{"id":"iem_E_36.500_-80.590_1785662400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785662400000,"latitude":36.5,"longitude":-80.59},{"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_-80.410_1785646800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785646800000,"latitude":36.5,"longitude":-80.41},{"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_36.500_-80.600_1785645000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785645000000,"latitude":36.5,"longitude":-80.6},{"id":"iem_F_36.480_-80.550_1785647100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785647100000,"latitude":36.48,"longitude":-80.55},{"id":"iem_F_36.490_-80.540_1785644700000","source":"iem","severity":"low","severityValue":25,"timestamp":1785644700000,"latitude":36.49,"longitude":-80.54},{"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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.