Drones To Study Hurricanes

NASA will begin flying drones into hurricanes in order to study their structure and the environment in which they form.

How To Track Severe Weather: The SPC

A primer on how to use the Storm Prediction Center's website to keep track of severe weather.

What is a derecho?

A post explaining the dangerous (and common) type of convection called a "derecho."

Remembering April 27, 2011

A discussion about the worst tornado outbreak in recorded American history.

Explaining Heat Bursts

Explaining the relatively uncommon phenomenon known as "heat bursts."

Sunday, July 25, 2010

Pileus Clouds

We had a round of severe weather come through Central North Carolina this afternoon, and I saw a phenomenon I'd never seen before. What I saw was called a pileus cloud. This is a cloud that sort of looks like a cap over another cloud, and it occurs when warm, moist air rises so fast in a thunderstorm's updraft that it pushes against the cooler, drier air above the storm. When the two air masses meet, it created a thin, cap-like cloud over the storm's cumulonimbus.

Here are a few of the pics I took:



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