This alert is in force until 4 September 2026, 00:00 UTC.
It is the 13th strongest of the 24 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 6 July 2026.
What the source measured
HEAT GOV reported: * WHAT...Afternoon heat index values around 100 degrees expected. * WHERE...Portions of northern Indiana, southwest Michigan, and northwest Ohio. * WHEN...Until 8 PM EDT /7 PM CDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 32,983 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 17, 2026 · score 39 · 10.0 km
- May 18, 2026 · score 43 · 13.2 km
- June 16, 2026 · score 43 · 16.5 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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) | 28 / 100 |
| Our confidence | 69% |
| Coordinates | 41.6426, -85.3490 |
| Nearest City | Goshen (41 km) |
| Population Exposed | 33.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T05:41:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-03T01:41:00-04:00 |
| Expires | 2026-09-03T20:00:00-04:00 |
| AreaDesc | Elkhart; Lagrange; Steuben; Noble; De Kalb; Northern La Porte; Eastern St. Joseph; Southern La Porte; Western St. Joseph; Cass; St. Joseph; Branch; Hillsdale; Northern Berrien; Southern Berrien; Williams; Fulton; Defiance; Henry |
| SenderName | NWS Northern Indiana |
| ZonesUsedForCentroid | 10 |
| ZoneCount | 19 |
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 heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.