This alert is in force until 3 September 2026, 00:00 UTC.
It is the 23rd strongest of the 36 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 19 August 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 105 expected. Overnight low temperatures between 75 and 80 offer limited relief. * WHERE...Portions of southwest Iowa and east central and southeast Nebraska. * WHEN...From 1 PM Wednesday to 7 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may ...
An estimated 91,941 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 6, 2026 · score 48 · 5.8 km
- June 11, 2026 · score 72 · 12.5 km
- May 16, 2026 · score 48 · 14.1 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100, at 69 % 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) | 32 / 100 |
| Our confidence | 69% |
| Coordinates | 40.7966, -95.9175 |
| Nearest City | Bellevue (38 km) |
| Population Exposed | 91.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T18:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-02T13:00:00-05:00 |
| Expires | 2026-09-02T19:00:00-05:00 |
| AreaDesc | Pottawattamie; Mills; Montgomery; Fremont; Page; Saunders; Douglas; Sarpy; Lancaster; Cass; Otoe; Gage; Johnson; Nemaha; Pawnee; Richardson |
| SenderName | NWS Omaha/Valley NE |
| ZonesUsedForCentroid | 8 |
| ZoneCount | 16 |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 32/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.