Severe Weather in United States
Right now
The most recent data we hold from HEAT GOV arrived 25 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 7 km from here.
This alert expired on 6 September 2026 at 00:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 29 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
HEAT GOV reported: * WHAT...Heat index values up to 110. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 348,391 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 5, 2026 · score 37 · 6.6 km
- June 12, 2026 · score 22 · 7.4 km
- June 12, 2026 · score 34 · 9.0 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 69 % 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) | 37 / 100 |
| Our confidence | 69% |
| Coordinates | 32.6477, -80.3859 |
| Nearest City | North Charleston (45 km) |
| Population Exposed | 348.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-05T20:40:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-05T16:40:00-04:00 |
| Expires | 2026-09-05T20:00:00-04:00 |
| AreaDesc | Effingham; Inland Chatham; Coastal Chatham; Hampton; Inland Colleton; Dorchester; Inland Berkeley; Inland Jasper; Beaufort; Coastal Colleton; Charleston; Coastal Jasper; Tidal Berkeley |
| SenderName | NWS Charleston SC |
| ZonesUsedForCentroid | 4 |
| ZoneCount | 13 |
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 37/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.