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
Early Taste of Summer Heat Expands Across the East Coast

Early Taste of Summer Heat Expands Across the East Coast

A big warmup is expected to take hold across

16 May 2026 8:05 PM
Saturday Severe Storms; Midwest to the Ohio Valley

Saturday Severe Storms; Midwest to the Ohio Valley

Scattered severe storms have been moving thro

16 May 2026 7:20 PM
Severe to Snow for the Rockies and Front Range

Severe to Snow for the Rockies and Front Range

Welcome to May in Colorado. This weekend fore

16 May 2026 7:20 PM
Dangerous Multi-day Severe Weather Threat Targets Central U.S. Into Early Next Week

Dangerous Multi-day Severe Weather Threat Targets Central U.S. Into Early Next Week

A widespread severe weather outbreak is expec

16 May 2026 7:10 PM
Hurricane Season Begins in the Eastern Pacific, Atlantic Soon To Follow

Hurricane Season Begins in the Eastern Pacific, Atlantic Soon To Follow

Ready for hurricane season? As a reminder, wa

16 May 2026 1:30 AM
Stormy and Wet Weather Continues for the Northeast

Stormy and Wet Weather Continues for the Northeast

A low-pressure system will linger in New Engl

14 May 2026 8:00 PM
Heat & Front Fuels Thunderstorms In The Northwest

Heat & Front Fuels Thunderstorms In The Northwest

WHAT TO EXPECTThe SPC has issued a slight ris

13 May 2026 9:25 PM