Right now
The most recent data we hold from NOAA arrived 78 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 18 June 2026 at 21:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 43 detections recorded within 20 km of this point since 12 March 2026. 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 June 18 at 5:20PM EDT until June 18 at 5:30PM EDT by NWS Peachtree City GA
Urban PEI: 130,787 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- March 12, 2026 · score 67 · 11.1 km
- March 13, 2026 · score 43 · 11.4 km
- June 30, 2026 · score 43 · 15.3 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.83/1 |
| Coordinates | 33.3246, -82.3862 |
| Nearest City | Evans (33 km) |
| Urban exposure index (PEI) | 130.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T21:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f9cafb563aa5a668182667d1e6d0ed6a |
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: 2026-06-18T21:20:00.000Z.
First archived: 2026-06-18T21:26:44.295Z. 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; Fulton, GA; Gwinnett, GA; Jasper, GA; Morgan, GA; Newton, GA; Putnam, GA; Rockdale, GA; Walton, GA; Emanuel, GA; Glascock, GA; Jefferson, GA; Warren, GA; Columbia, GA; Lincoln, GA; McDuffie, GA; McCormick, SC and 3 more areas |
| Headline | Severe Thunderstorm Warning issued June 18 at 5:20PM EDT until June 18 at 5:30PM EDT by NWS Peachtree City GA |
| Expires | 2026-06-18T17:30:00-04:00 |
| SenderName | NWS Peachtree City GA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f9cafb563aa5a668182667d1e6d0ed6a76306464.002.1","noaa_urn:oid:2.49.0.1.840.0.9faa07da5dad428e35078dbeed4fc189648de2ae.001.1","noaa_urn:oid:2.49.0.1.840.0.cf76e487f2a03fb4c32c53ea01c7472e60ee4c86.001.1","noaa_urn:oid:2.49.0.1.840.0.9a0d4815b8233beac8ca730c9943a5f0d819d463.002.1","noaa_urn:oid:2.49.0.1.840.0.73083322787af7fa2bd2d8730bcb121cf111bf00.001.1","noaa_urn:oid:2.49.0.1.840.0.40e8afed1396f80141d82e3b23ec9af6f9e9ab94.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 E Aiken |
| Iem County | Aiken |
| Iem State | SC |
| Iem Wfo | CAE |
| Iem Remark | Aiken EM reported tree fell and downed power lines near the entrance to Citizens Park at Woodvale Ln. |
| MergedSources | [{"id":"iem_D_33.540_-81.700_1781810400000","source":"iem","severity":"low","severityValue":25,"timestamp":1781810400000,"latitude":33.54,"longitude":-81.7}] |
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.
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