A note from Robert asks what hoar frost is. True frost, also known as hoar frost, occurs when a thin layer of moist air near the ground cools to below freezing and immediately forms ice crystals ...

PORTLAND, Ore. (KOIN) — Unusual-shaped ice with an even more unique name has been spotted around Portland after sub-freezing mornings. Portland’s clear and chilly mornings are leaving behind some ...

Frost is closely to radiational cooling, which is the cooling of the earth’s surface at night. Sources estimate the final frost date based NOAA climate data. The National Weather Service’s Climate ...

Frost in the Mining City Hoar frost covered most trees and fences on the Montana Tech campus and Butte’s West Side Thursday night leaving a frosty wonderland that melted by late Friday afternoon.

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Newspaper photo of snowy tree with ...

Dear Science Mine: What is hoar frost, and how does it form? — Kris Douglass, Butte White frost or hoar frost is an amazing weather event that occurs in the cooler months of the year. Around Butte we ...