A Heat Burst Happened Sunday Morning: What Is It??

news image
Top Stories
23 Jun 2025 8:50 AM

Sounds like something out of science fiction, right? These are relatively rare, but sometimes, the temperature can jump rapidly in the early morning hours, like it did this morning in Perham, MN. So, how does it happen? What do you need to see the thermometer jump almost 20° without much warning? There are two big ingredients you'll need: a dying storm and some warm air just off the surface.

As that storm falls apart, the rain-cooled air will shove the warmer, drier air down to the surface. The temperature shot from about 80 all the way up to 97 in a matter of 30 minutes between 7:00 and 8:00 AM.

Usually, these happen in the morning hours, when an inversion will displace the warmer air aloft as we cool off overnight.

All Weather News
More
Record Heat Fuels Severe Storms in the Northeast

Record Heat Fuels Severe Storms in the Northeast

Summer heat has been building around the East

12 Jun 2026 10:40 PM
Numerous Tornadoes Tear Across the Midwest

Numerous Tornadoes Tear Across the Midwest

The Midwest has been dealing with several rou

12 Jun 2026 10:30 PM
Tropical Moisture to Raise Flooding and Severe Concerns Across Central U.S.

Tropical Moisture to Raise Flooding and Severe Concerns Across Central U.S.

A surge of tropical moisture streaming north

12 Jun 2026 10:00 PM
El Niño Forms, Very Strong El Niño Likely Late 2026

El Niño Forms, Very Strong El Niño Likely Late 2026

El Niño has arrived! It didn't take long for

12 Jun 2026 9:30 PM
First Disturbance of the 2026 Atlantic Hurricane Season Identified in the Gulf

First Disturbance of the 2026 Atlantic Hurricane Season Identified in the Gulf

AtlanticThe first disturbance out into the At

12 Jun 2026 7:35 PM
East & West Coast Weekend Heat

East & West Coast Weekend Heat

Heat advisories have been expanding across th

12 Jun 2026 10:00 AM
Tropical Moisture Brings Increased Flood Risk

Tropical Moisture Brings Increased Flood Risk

With multiple rounds of heavy downpours acros

9 Jun 2026 10:40 AM