Right now
The most recent data we hold from NOAA arrived 4 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 22 May 2026 at 23:30 UTC. It is kept here as a record.
No stronger detection stands among the 72 recorded within 20 km of this point since 22 May 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 22 at 7:14PM EDT until May 22 at 7:30PM EDT by NWS Columbia SC
Urban PEI: 23,260 within a heuristic 50 km radius; not unique people.
Nearby, since 22 May 2026
- August 6, 2026 · score 28 · 7.8 km
- September 6, 2026 · score 32 · 11.2 km
- May 28, 2026 · score 34 · 11.3 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 34.0719, -81.8688 |
| Nearest City | Greenwood (30 km) |
| Urban exposure index (PEI) | 23.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-22T23:14:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ccd32371fe9230e3d77bf07fed4a150c7b2697a3.001.1 |
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: 2026-05-22T23:14:00.000Z.
First archived: 2026-05-22T23:28:06.995Z. 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 | Edgefield, SC; Newberry, SC; Saluda, SC |
| Headline | Severe Thunderstorm Warning issued May 22 at 7:14PM EDT until May 22 at 7:30PM EDT by NWS Columbia SC |
| Expires | 2026-05-22T19:30:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 68 |
| Iem Unit | MPH |
| Iem City | 3 WSW Coronaca |
| Iem County | Greenwood |
| Iem State | SC |
| Iem Wfo | GSP |
| Iem Remark | Greenwood County Airport (KGRD) ASOS recorded a 68 mph wind gust associated with a thunderstorm. |
| MergedSources | [{"id":"iem_G_34.250_-82.150_1779478020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779478020000,"latitude":34.25,"longitude":-82.15}] |
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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