This alert expired on 4 September 2026 at 05:30 UTC. It is kept here as a record.
It is the only one we have recorded within 20 km of this point since 4 September 2026.
What the source measured
HEAT GOV reported: * WHAT...Temperatures up to 80 expected. * WHERE...Prince of Wales Island. * WHEN...From noon to 7 PM AKDT Friday. * IMPACTS...Individuals not accustomed to these unusually hot temperatures for this region may experience heat related illnesses. * ADDITIONAL DETAILS...Temperatures will be the ...
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 50 % 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) | 16 / 100 |
| Our confidence | 50% |
| Coordinates | 56.3576, -133.6189 |
| Nearest City | Juneau (221 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-04T20:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-04T12:00:00-08:00 |
| Expires | 2026-09-03T21:30:00-08:00 |
| AreaDesc | Prince of Wales Island |
| SenderName | NWS Juneau AK |
| ZonesUsedForCentroid | 1 |
| ZoneCount | 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.