A cold snap gave us roadside views of frosty landscapes from Portland to Seattle. Was that snow? I think not. But closer examination the following days showed we had a good variety of frozen precipitation.
![](http://c2.com/wiki/precip/frost.jpg)
Frost. Saturday. Bothell Landing City Park.
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![](http://c2.com/wiki/precip/snow.jpg)
Snow. Sunday. Dupont Starbucks.
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![](http://c2.com/wiki/precip/ice.jpg)
Ice. Monday. Home in Beaverton.
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Our weekend of driving has us considering how we might recognize these frozen variations on tree branches from a moving car. Would my casual understanding of the meteorology involved offer any safety guidance? No, not really. But close inspections proved invaluable.