Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 15 km from here.
This alert is in force until 7 September 2026, 22:00 UTC.
It is the 13th strongest of the 40 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Special Marine Warning issued September 7 at 4:00PM EDT until September 7 at 6:00PM EDT by NWS Charleston SC
An estimated 33,398 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 15, 2026 · score 43 · 12.4 km
- August 10, 2026 · score 43 · 14.1 km
- September 7, 2026 · score 28 · 15.3 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 85% |
| Coordinates | 31.5805, -81.2062 |
| Nearest City | Hinesville (48 km) |
| Population Exposed | 33.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-07T20:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.e58a262add361646d07f63c4325939e0983a66a0.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary |
| Headline | Special Marine Warning issued September 7 at 4:00PM EDT until September 7 at 6:00PM EDT by NWS Charleston SC |
| Expires | 2026-09-07T18:00:00-04:00 |
| SenderName | NWS Charleston SC |
| HasExactCoords | true |
| Iem TypeSummary | W |
| Iem City | 5 SSW Tybee Island |
| Iem County | AMZ364 |
| Iem State | GA |
| Iem Wfo | CHS |
| Iem Remark | Tybee Island Ocean Rescue lifeguards reported three waterspouts ongoing south of Tybee Island. |
| MergedSources | [{"id":"iem_W_31.940_-80.890_1788810900000","source":"iem","severity":"low","severityValue":25,"timestamp":1788810900000,"latitude":31.94,"longitude":-80.89}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.