This alert expired on 1 August 2026 at 21:30 UTC. It is kept here as a record.
No stronger detection stands among the 48 recorded within 20 km of this point since 12 March 2026 — 24 others scored the same. The last comparable one was on 14 July 2026.
What the source measured
NOAA reported: Flash Flood Warning issued August 1 at 2:26PM EDT until August 1 at 5:30PM EDT by NWS Columbia SC
An estimated 161,391 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 25, 2026 · score 43 · 7.4 km
- May 26, 2026 · score 43 · 10.3 km
- May 23, 2026 · score 43 · 11.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 33.5135, -82.0471 |
| Nearest City | Martinez (3 km) |
| Population Exposed | 161.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-01T18:26:00.000Z |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Columbia, GA; Richmond, GA |
| Headline | Flash Flood Warning issued August 1 at 2:26PM EDT until August 1 at 5:30PM EDT by NWS Columbia SC |
| Expires | 2026-08-01T17:30:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Martinez (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.