Sweltering a bit after Seattle experiences its third consecutive day over 60 degrees? This ought to cool you off...
These interesting ice patterns were spotted on Ken Corkum's car Sunday morning.
The intricate patterns are caused as the water freezes onto the glass -- changes in temperature and wind can affect the progression of the water freezing into ice. The glass surface can also come into play if it's not either perfectly clean or has miniscule imperfections on the surface.
Add it all up, and you get a somewhat random freezing pattern that can turn oh, so gorgeous.
Here is a good explanation on how some of these patterns can form.
And here is another photo. Thanks Ken!