Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 17 July 2026 at 20:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 100 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: Severe Thunderstorm Warning issued July 17 at 4:07PM EDT until July 17 at 4:45PM EDT by NWS Peachtree City GA
Urban PEI: 1,714,363 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 17, 2026 · score 52 · 1.9 km
- March 16, 2026 · score 76 · 3.7 km
- September 5, 2026 · score 46 · 7.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 33.6977, -84.1453 |
| Nearest City | Stonecrest (2 km) |
| Urban exposure index (PEI) | 1.7M within 50 km |
| Impact Tier | significant |
| Date | 2026-07-17 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.df5233efe105930872966153a4028f5c |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-17 — time not reported.
First archived: 2026-07-17T20:07:43.489Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | DeKalb, GA; Henry, GA; Rockdale, GA; DeKalb, GA; Gwinnett, GA |
| Headline | Severe Thunderstorm Warning issued July 17 at 4:07PM EDT until July 17 at 4:45PM EDT by NWS Peachtree City GA |
| Expires | 2026-07-17T16:45:00-04:00 |
| SenderName | NWS Peachtree City GA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.df5233efe105930872966153a4028f5c9c077930.001.1","noaa_urn:oid:2.49.0.1.840.0.0d4db9e141f93a6179501241c86a7a9852a561f4.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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