This alert expired on 18 June 2026 at 23:33 UTC. It is kept here as a record.
No stronger detection stands among the 35 recorded within 20 km of this point since 31 May 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 7:23PM EDT until June 18 at 7:30PM EDT by NWS Charleston SC
An estimated 219,449 people live within 50 km of this point.
Nearby, since 31 May 2026
- August 10, 2026 · score 43 · 15.4 km
- August 10, 2026 · score 43 · 16.1 km
- July 13, 2026 · score 43 · 16.9 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 89 % 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) | 43 / 100 |
| Our confidence | 89% |
| Coordinates | 31.8310, -81.3229 |
| Nearest City | Hinesville (26 km) |
| Population Exposed | 219.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T23:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.795468a0eacbc377755a78ffc880aa847ed45acc.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bryan, GA; Liberty, GA |
| Headline | Severe Thunderstorm Warning issued June 18 at 7:23PM EDT until June 18 at 7:30PM EDT by NWS Charleston SC |
| Expires | 2026-06-18T19:33:00-04:00 |
| SenderName | NWS Charleston SC |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 4 E Marlow |
| Iem County | Effingham |
| Iem State | GA |
| Iem Wfo | CHS |
| Iem Remark | Power lines down across the road near 1980 Low Ground Road. Power outages were reported in the area. Time determined from radar data. |
| MergedSources | [{"id":"iem_E_32.030_-81.090_1781818020000","source":"iem","severity":"low","severityValue":25,"timestamp":1781818020000,"latitude":32.03,"longitude":-81.09},{"id":"iem_D_32.260_-80.900_1781814420000","source":"iem","severity":"low","severityValue":25,"timestamp":1781814420000,"latitude":32.26,"longitude":-80.9},{"id":"iem_D_32.090_-81.120_1781813340000","source":"iem","severity":"low","severityValue":25,"timestamp":1781813340000,"latitude":32.09,"longitude":-81.12},{"id":"iem_M_32.110_-80.840_1781815140000","source":"iem","severity":"low","severityValue":25,"timestamp":1781815140000,"latitude":32.11,"longitude":-80.84},{"id":"iem_D_32.260_-81.330_1781812320000","source":"iem","severity":"low","severityValue":25,"timestamp":1781812320000,"latitude":32.26,"longitude":-81.33}] |
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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Hinesville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.