Oct
14
2007

Pretty science picture of the day

Fitting that something called a "bore" would be found in Iowa: Photo by NASA.  Minnesota trash-talk by Gene
Fitting that something called a "bore" would be found in Iowa: Photo by NASA. Minnesota trash-talk by Gene

Colliding masses of air over Des Moines, Iowa on October 3 formed waves of clouds known as an undular bore. (Time-lapse video at the link.)

What happened was an approaching thunderstorm plowed into a mass of stable, cold air, like the prow of a ship plowing through the water. This set up huge waves in the air, which rippled over Des Moines. Winds would whip around 180° as the waves rolled by.

Scientists think these types of waves may be more common than we know, and may play a big role in violent weather.

Your Comments, Thoughts, Questions, Ideas

nancyphetsamone's picture
nancyphetsamone says:

interesting that bore are found in Iowa and play a big role in violent weather!!!!!!!

posted on Tue, 11/18/2008 - 11:25am

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