Home / Weather News /

The science behind hole-punch clouds and why you might see them near airports

07:00 PM
August 14, 2023

Hole-punch clouds
The science behind the strange formation

Have you ever looked up at the sky and spotted a curious gap in the clouds? These fascinating formations are known as fallstreak holes or "hole-punch" clouds.

Typically, these are circular or elliptical in shape. They form in middle-altitude clouds such as cirrocumulus or altocumulus. While these clouds are filled with supercooled water droplets that are below freezing, they don't become ice due to the lack of particles. But when particles do show up, they initiate the creation of ice crystals. This sets off a chain reaction where nearby droplets evaporate, leading to the large gaps we see.

What's more, these clouds can also form at lower altitudes, especially due to the movement of jets and airplanes. Andrew Heymsfield from the National Center for Atmospheric Research found an interesting cause.

As airplanes fly through these clouds, the sudden air expansion and cooling makes water droplets freeze and drop. This results in a widening fallstreak hole. While these occurrences are somewhat rare, keep an eye out for them near airports!

More on the topic
Summer brings the heat and the water activities with it!
Monday, June 2, 2025

Bye, spring!

Meteorological summer is here!
Saturday, April 26, 2025

Off the coast of Sardinia

Waterspout seen from cruise ship
Stonehenge during the June 2020 summer solstice.
Friday, June 20, 2025

Longest day of the year

Today marks the summer solstice
All weather news
This might also interest you
Wednesday, June 25, 2025

Lightning safety

Group of 20 hit by lightning in S.C.
Monday, June 30, 2025

Daily briefing

Summer in full swing
Wednesday, June 25, 2025

Daily briefing

Eastern heat wanes slightly
All articles
Weather & Radar

www.weatherandradar.com

instagramfacebookthreadsContact uslinkList
Privacy policy | Legal info | Accessibility statement