The Computer Vet Weblog

This week we’ve been caught in the grip of fog every day until late morning. And we’ve been running into pogonip - that’s where the conditions are just right for the fog to freeze, and for ice crystals to build up on all the trees. It doesn’t happen very often—even fog and snow don’t happen very often around here—but it’s pretty cool when it does.

Looking down the street, visibility is low and all the trees are white. The temperature is about 20° F.

It hasn’t snowed in two weeks, but things are as white as ever.

The trees are growing leaves again - leaves of ice.

A closeup of the tangle of branches, all coated in ice.

The tiny crystals form in all directions. Once the sun comes out, they slowly melt and fall away, creating a mini snowstorm underneath the branches. By mid-afternoon it’s all gone.

Even the icicles have ice!