This alert expired on 12 August 2026 at 01:30 UTC. It is kept here as a record.
It is the 5th strongest of the 74 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 11 at 6:30PM EDT until August 11 at 9:30PM EDT by NWS Charleston WV
An estimated 95,476 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 27, 2026 · score 34 · 6.8 km
- July 21, 2026 · score 40 · 16.5 km
- July 28, 2026 · score 39 · 17.1 km
How we know
Confirmed by 31 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 89 % 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) | 39 / 100 |
| Our confidence | 89% |
| Coordinates | 38.2487, -81.9253 |
| Nearest City | Charleston (28 km) |
| Population Exposed | 95.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T22:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8974edbfc3f3ccf17d85c52d93aae4b2bcb22c61.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Boone, WV; Cabell, WV; Kanawha, WV; Lincoln, WV; Putnam, WV; Wayne, WV |
| Headline | Flash Flood Warning issued August 11 at 6:30PM EDT until August 11 at 9:30PM EDT by NWS Charleston WV |
| Expires | 2026-08-11T21:30:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 3 SE Charleston |
| Iem County | Kanawha |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | A tree was blown down along Staunton Avenue Southeast in Kanawha City. Time estimated via radar. |
| MergedSources | [{"id":"iem_D_37.840_-82.440_1786468980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786468980000,"latitude":37.84,"longitude":-82.44},{"id":"iem_F_38.350_-81.790_1786488840000","source":"iem","severity":"low","severityValue":25,"timestamp":1786488840000,"latitude":38.35,"longitude":-81.79},{"id":"iem_F_38.360_-81.640_1786468440000","source":"iem","severity":"low","severityValue":25,"timestamp":1786468440000,"latitude":38.36,"longitude":-81.64},{"id":"iem_F_38.880_-82.150_1786470120000","source":"iem","severity":"low","severityValue":25,"timestamp":1786470120000,"latitude":38.88,"longitude":-82.15},{"id":"iem_F_38.290_-81.780_1786489200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786489200000,"latitude":38.29,"longitude":-81.78},{"id":"iem_D_38.240_-82.460_1786465800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786465800000,"latitude":38.24,"longitude":-82.46},{"id":"iem_D_38.290_-82.460_1786465800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786465800000,"latitude":38.29,"longitude":-82.46},{"id":"iem_D_38.240_-81.900_1786466880000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466880000,"latitude":38.24,"longitude":-81.9},{"id":"iem_D_38.240_-82.200_1786466520000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466520000,"latitude":38.24,"longitude":-82.2},{"id":"iem_D_38.340_-82.560_1786484880000","source":"iem","severity":"low","severityValue":25,"timestamp":1786484880000,"latitude":38.34,"longitude":-82.56},{"id":"iem_F_38.140_-81.630_1786469640000","source":"iem","severity":"low","severityValue":25,"timestamp":1786469640000,"latitude":38.14,"longitude":-81.63},{"id":"iem_F_38.590_-81.330_1786469100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786469100000,"latitude":38.59,"longitude":-81.33},{"id":"iem_D_38.270_-82.320_1786485660000","source":"iem","severity":"low","severityValue":25,"timestamp":1786485660000,"latitude":38.27,"longitude":-82.32},{"id":"iem_D_38.340_-81.670_1786466400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466400000,"latitude":38.34,"longitude":-81.67},{"id":"iem_F_38.280_-82.100_1786488000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786488000000,"latitude":38.28,"longitude":-82.1},{"id":"iem_D_37.880_-82.560_1786468980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786468980000,"latitude":37.88,"longitude":-82.56},{"id":"iem_F_38.860_-82.140_1786470000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786470000000,"latitude":38.86,"longitude":-82.14},{"id":"iem_D_38.310_-82.300_1786485540000","source":"iem","severity":"low","severityValue":25,"timestamp":1786485540000,"latitude":38.31,"longitude":-82.3},{"id":"iem_D_38.350_-81.630_1786466400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466400000,"latitude":38.35,"longitude":-81.63},{"id":"iem_F_38.360_-81.650_1786468020000","source":"iem","severity":"low","severityValue":25,"timestamp":1786468020000,"latitude":38.36,"longitude":-81.65},{"id":"iem_D_38.310_-82.210_1786485660000","source":"iem","severity":"low","severityValue":25,"timestamp":1786485660000,"latitude":38.31,"longitude":-82.21},{"id":"iem_F_38.850_-82.100_1786466580000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466580000,"latitude":38.85,"longitude":-82.1},{"id":"iem_R_38.280_-81.570_1786469220000","source":"iem","severity":"low","severityValue":25,"timestamp":1786469220000,"latitude":38.28,"longitude":-81.57},{"id":"iem_D_37.870_-82.530_1786468980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786468980000,"latitude":37.87,"longitude":-82.53},{"id":"iem_F_38.330_-81.620_1786465800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786465800000,"latitude":38.33,"longitude":-81.62},{"id":"iem_D_38.240_-81.990_1786466880000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466880000,"latitude":38.24,"longitude":-81.99},{"id":"iem_D_38.040_-82.130_1786486680000","source":"iem","severity":"low","severityValue":25,"timestamp":1786486680000,"latitude":38.04,"longitude":-82.13},{"id":"iem_F_38.350_-81.640_1786467360000","source":"iem","severity":"low","severityValue":25,"timestamp":1786467360000,"latitude":38.35,"longitude":-81.64},{"id":"iem_D_37.840_-82.440_1786477800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786477800000,"latitude":37.84,"longitude":-82.44},{"id":"iem_D_38.330_-81.590_1786466640000","source":"iem","severity":"low","severityValue":25,"timestamp":1786466640000,"latitude":38.33,"longitude":-81.59}] |
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 near Charleston?
Calamity.live data shows a weather event with CalamityScore 39/100, near Charleston (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.