6/25/2009 - NIU Mammatus

Severe thunderstorms over Stephenson and Winnebago Counties threw a delightful anvil atop NIU Thursday afternoon. Mammatus routinely punched downward from the anvil making for a spooky skyscape on campus. Below are a few images of Davis Hall -- home of NIU Geography and Meteorology -- silhouetted with mammatus. As an extra bonus, I've thrown in a short time lapse of towering cu and orphaned anvil/virga shower over the Kane County region, as viewed from NIU.