This alert expired on 4 July 2026 at 22:16 UTC. It is kept here as a record.
No stronger detection stands among the 25 recorded within 20 km of this point since 4 July 2026 — 17 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 6:09PM EDT until July 4 at 6:15PM EDT by NWS Peachtree City GA
An estimated 1,623,108 people live within 50 km of this point.
Nearby, since 4 July 2026
- July 4, 2026 · score 52 · 6.2 km
- July 24, 2026 · score 52 · 14.6 km
- July 17, 2026 · score 52 · 15.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 83 % 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 | 83% |
| Coordinates | 33.9823, -84.0262 |
| Nearest City | Lawrenceville (4 km) |
| Population Exposed | 1.6M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T22:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7758e71c83ee8e56c73ba41d7cb3306320f0e079.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Barrow, GA; Gwinnett, GA; Walton, GA |
| Headline | Severe Thunderstorm Warning issued July 4 at 6:09PM EDT until July 4 at 6:15PM EDT by NWS Peachtree City GA |
| Expires | 2026-07-04T18:16:00-04:00 |
| SenderName | NWS Peachtree City GA |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Dacula |
| Iem County | Gwinnett |
| Iem State | GA |
| Iem Wfo | FFC |
| MergedSources | [{"id":"iem_H_33.990_-83.900_1783200720000","source":"iem","severity":"low","severityValue":25,"timestamp":1783200720000,"latitude":33.99,"longitude":-83.9}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 Lawrenceville?
Calamity.live data shows a weather event with CalamityScore 52/100, near Lawrenceville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.