This alert expired on 4 August 2026 at 19:45 UTC. It is kept here as a record.
No stronger detection stands among the 38 recorded within 20 km of this point since 16 March 2026 — 19 others scored the same. The last comparable one was on 29 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 4 at 12:50PM EDT until August 4 at 3:45PM EDT by NWS Peachtree City GA
An estimated 2,000,227 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 24, 2026 · score 52 · 0.3 km
- May 29, 2026 · score 52 · 3.7 km
- May 24, 2026 · score 52 · 5.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 86 % 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) | 52 / 100 |
| Our confidence | 86% |
| Coordinates | 33.8473, -84.4436 |
| Nearest City | Smyrna (7 km) |
| Population Exposed | 2.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-04T16:50:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.500c32d474e5b3807177a4ec571bf890cf9ddcf2.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Cobb, GA; Fulton, GA |
| Headline | Flash Flood Warning issued August 4 at 12:50PM EDT until August 4 at 3:45PM EDT by NWS Peachtree City GA |
| Expires | 2026-08-04T15:45:00-04:00 |
| SenderName | NWS Peachtree City GA |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 2 ESE Vinings |
| Iem County | Fulton |
| Iem State | GA |
| Iem Wfo | FFC |
| Iem Remark | Video showed water covering and blocking half of the roadway on Northside Pkwy NW just before West Paces Ferry Rd NW. |
| MergedSources | [{"id":"iem_F_33.850_-84.430_1785864000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785864000000,"latitude":33.85,"longitude":-84.43}] |
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 Smyrna?
Calamity.live data shows a weather event with CalamityScore 52/100, near Smyrna (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.