This alert expired on 12 August 2026 at 00:00 UTC. It is kept here as a record.
It is the 53rd strongest of the 63 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 24 July 2026.
What the source measured
NOAA reported: Flash Flood Warning issued August 11 at 3:53PM CDT until August 11 at 7:00PM CDT by NWS Birmingham AL
An estimated 59,100 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 1, 2026 · score 34 · 13.1 km
- July 24, 2026 · score 32 · 15.8 km
- March 16, 2026 · score 43 · 25.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 85 % 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 | 85% |
| Coordinates | 33.7195, -85.2086 |
| Nearest City | Carrollton (20 km) |
| Population Exposed | 59.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T20:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.9260361fb9d38b5289850ba871559d30 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Calhoun, AL; Cherokee, AL; Cleburne, AL; Etowah, AL; Coweta, GA; Fayette, GA; Fulton, GA |
| Headline | Flash Flood Warning issued August 11 at 3:53PM CDT until August 11 at 7:00PM CDT by NWS Birmingham AL |
| Expires | 2026-08-11T19:00:00-05:00 |
| SenderName | NWS Birmingham AL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9260361fb9d38b5289850ba871559d3020923147.001.1","noaa_urn:oid:2.49.0.1.840.0.410d58e11b19162784afe8425060613c2b920fcb.001.1"] |
| Iem TypeSummary | D |
| Iem City | Gaylesville |
| Iem County | Cherokee |
| Iem State | AL |
| Iem Wfo | BMX |
| Iem Remark | Tree down reports at various parts of the county from multiple rounds of thunderstorms; sub-severe winds probable along with heavy rainfall. |
| MergedSources | [{"id":"iem_D_34.270_-85.560_1786478400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786478400000,"latitude":34.27,"longitude":-85.56}] |
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 Carrollton?
Calamity.live data shows a weather event with CalamityScore 39/100, near Carrollton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.