This alert expired on 2 August 2026 at 18:00 UTC. It is kept here as a record.
It is the 4th strongest of the 48 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued August 2 at 7:20AM EDT until August 2 at 2:00PM EDT by NWS Blacksburg VA
An estimated 39,346 people live within 50 km of this point.
Nearby, since 16 March 2026
- March 17, 2026 · score 22 · 6.0 km
- March 16, 2026 · score 22 · 6.0 km
- July 8, 2026 · score 22 · 16.6 km
How we know
Confirmed by 16 independent sources, including NOAA.
Our own score for this event is 34 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) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 36.7122, -80.5122 |
| Nearest City | Radford (47 km) |
| Population Exposed | 39.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-02T11:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.3da2e3dcaaf9fb05fb3f1cf61b70f8d36b0bc382.002.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Surry, NC; Carroll, VA; Patrick, VA |
| Headline | Flood Warning issued August 2 at 7:20AM EDT until August 2 at 2:00PM EDT by NWS Blacksburg VA |
| Expires | 2026-08-02T14:00:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 4.2 |
| Iem Unit | Inch |
| Iem City | 2 SE Willis |
| Iem County | Floyd |
| Iem State | VA |
| Iem Wfo | RNK |
| MergedSources | [{"id":"iem_F_36.540_-80.570_1785650400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785650400000,"latitude":36.54,"longitude":-80.57},{"id":"iem_R_36.540_-80.630_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":36.54,"longitude":-80.63},{"id":"iem_F_36.500_-80.420_1785648300000","source":"iem","severity":"low","severityValue":25,"timestamp":1785648300000,"latitude":36.5,"longitude":-80.42},{"id":"iem_F_36.500_-80.600_1785654000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785654000000,"latitude":36.5,"longitude":-80.6},{"id":"iem_R_36.630_-80.360_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":36.63,"longitude":-80.36},{"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_36.510_-80.490_1785651300000","source":"iem","severity":"low","severityValue":25,"timestamp":1785651300000,"latitude":36.51,"longitude":-80.49},{"id":"iem_E_36.730_-80.600_1785670200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785670200000,"latitude":36.73,"longitude":-80.6},{"id":"iem_F_36.510_-80.460_1785649800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785649800000,"latitude":36.51,"longitude":-80.46},{"id":"iem_E_36.500_-80.590_1785662400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785662400000,"latitude":36.5,"longitude":-80.59},{"id":"iem_R_36.720_-80.580_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":36.72,"longitude":-80.58},{"id":"iem_E_36.500_-80.600_1785677400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785677400000,"latitude":36.5,"longitude":-80.6},{"id":"iem_E_36.480_-80.600_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":36.48,"longitude":-80.6},{"id":"iem_F_36.550_-80.480_1785655800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785655800000,"latitude":36.55,"longitude":-80.48},{"id":"iem_R_36.830_-80.460_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":36.83,"longitude":-80.46}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.