My sister recently sent this photo of a frozen puddle, a little over a foot across. Something broke out a piece of ice in the upper right, but it’s mainly a complete glaze over the top. (The white dots are rimed snow crystals. Click to zoom in and see.)… more »
While riding my bike home the other day, I saw what appeared to be a patch of light snow. It was the only such patch around. Looking closer, I could see that it consisted not of snow, but of chunks of partly melted rime deposits. (Note how the pieces… more »
The Pacific Northwest has been foggy a lot lately, but the fog droplets have been subzero, or supercooled. When such fog droplets hit an object, they almost always freeze. The resulting frozen aggregate is called rime. Freezing fogs make rime. The… more »
David Easterling recently reported in BAMS** that the number of frost days per year is decreasing over the US. A frost day is a day in which the minimum temperature goes below the melting temperature of ice (32 F or 0 C). This doesn't sound good for a… more »
The morning after a rapid cool-down, I found hair ice on an alder log. From a distance, it looked unnaturally white, like it was a bit of discarded cotton or white paper, but the closer I got to it, the more incredible it seemed. more »
Two mornings ago, I saw this on the windshield of a parked car. The bulls-eye pattern wasn’t centered on any particular feature on the windshield, and there were similar, though less developed, patterns nearby. See them on the photo below. The dark… more »
How do snow crystals form? Are no two snow crystals alike? What's the best way to catch a snowflake? These questions and more are answered in this visually stunning exploration of the science of snow. With a blizzard of accolades to its name, including starred reviews in Booklist and The Bulletin of the Center for Children's Books, The Story of Snow continues to charm reviewers and educators: the National Science Teachers Association and Children's Book Council named it an Outstanding Science Trade Book for Students K-12 and the New York Public Library featured it in their List of 100 Titles for Reading and Sharing. Perfect for areas where snow falls, but will enhance learning about weather anywhere.