Right now
The most recent data we hold from NOAA arrived 23 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 21:15 UTC. It is kept here as a record.
It is the 4th strongest of the 6 detections recorded within 20 km of this point since 23 May 2026. The last comparable one was on 23 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 4:26PM EDT until June 18 at 5:15PM EDT by NWS Charleston SC
Nearby, since 23 May 2026
- May 23, 2026 · score 34 · 8.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.58/1 |
| Coordinates | 33.1455, -82.6678 |
| Nearest City | Milledgeville (53 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-18T20:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6dd70514f06f7db418e50b9232de0339 |
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: 2026-06-18T20:26:00.000Z.
First archived: 2026-06-18T20:28:52.292Z. 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 | Beaufort, SC; Colleton, SC; Hampton, SC; Jasper, SC; Chatham, GA; Effingham, GA; Beaufort, SC; Hampton, SC; Jasper, SC; Kershaw, SC; Richland, SC; Sumter, SC and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 18 at 4:26PM EDT until June 18 at 5:15PM EDT by NWS Charleston SC |
| Expires | 2026-06-18T17:15:00-04:00 |
| SenderName | NWS Charleston SC |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6dd70514f06f7db418e50b9232de033973a9f6a7.001.1","noaa_urn:oid:2.49.0.1.840.0.c7fcc89ca8f92f4cb5d59b6921f043e1e75c2a4b.001.1","noaa_urn:oid:2.49.0.1.840.0.6e1d15b01d38164289b02e6329a6d50ffc2fb18e.001.1","noaa_urn:oid:2.49.0.1.840.0.131da266f015dbd2b488acd890512d9add49edd0.001.1","noaa_urn:oid:2.49.0.1.840.0.9bc3a2795c30aa93aaaeec0a7320350c4973f02c.001.1","noaa_urn:oid:2.49.0.1.840.0.10853ee82403d8988ab559107502f106588c68a5.002.1","noaa_urn:oid:2.49.0.1.840.0.bda03849474c8ec8a71a009a5e0c900328e2c741.001.1","noaa_urn:oid:2.49.0.1.840.0.b51d88a9335d1951cdc6760427d33ceb61add335.001.1"] |
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.
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