This alert expired on 13 August 2026 at 22:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 28 detections recorded within 20 km of this point since 11 May 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 August 13 at 6:05PM EDT until August 13 at 6:30PM EDT by NWS Charleston SC
An estimated 94,339 people live within 50 km of this point.
Nearby, since 11 May 2026
- July 5, 2026 · score 43 · 16.0 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 88% |
| Coordinates | 32.5768, -80.8287 |
| Nearest City | Bluffton (38 km) |
| Population Exposed | 94.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T22:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.20e62faaca3539242eaa4728d0a46d6b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Chatham, GA; Beaufort, SC; Colleton, SC; Hampton, SC; Jasper, SC; Bamberg, SC; Barnwell, SC; Orangeburg, SC; Bryan, GA; Chatham, GA; Liberty, GA; Long, GA; McIntosh, GA; Jasper, SC and 1 more areas |
| Headline | Severe Thunderstorm Warning issued August 13 at 6:05PM EDT until August 13 at 6:30PM EDT by NWS Charleston SC |
| Expires | 2026-08-13T18:30:00-04:00 |
| SenderName | NWS Charleston SC |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.20e62faaca3539242eaa4728d0a46d6bdaff3367.002.1","noaa_urn:oid:2.49.0.1.840.0.060fb22758fcd062253331498fbdd3d32554f2aa.001.1","noaa_urn:oid:2.49.0.1.840.0.10a1ae6d9d9dac898511262136a8f400301720ac.001.1","noaa_urn:oid:2.49.0.1.840.0.44bcc300ee29af8a96060c5e110ab5d18805a403.001.1"] |
| Iem TypeSummary | D |
| Iem City | Egypt |
| Iem County | Effingham |
| Iem State | GA |
| Iem Wfo | CHS |
| Iem Remark | 911 call center reported a tree down along Hwy 17 near Shearwood Rd. |
| MergedSources | [{"id":"iem_I_32.500_-80.990_1786639500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786639500000,"latitude":32.5,"longitude":-80.99},{"id":"iem_I_32.680_-80.710_1786639740000","source":"iem","severity":"low","severityValue":25,"timestamp":1786639740000,"latitude":32.68,"longitude":-80.71},{"id":"iem_I_32.560_-80.460_1786646700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786646700000,"latitude":32.56,"longitude":-80.46},{"id":"iem_D_32.460_-81.470_1786654800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786654800000,"latitude":32.46,"longitude":-81.47}] |
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 10 February 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 in this area?
Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.