Slideshow: Cold Air Funnel on Flathead Lake
POSTED: 3:34 PM Nov 04 2013 UPDATED: 5:07 PM Nov 04 2013
Cold air funnels are not the same as thunderstorm produced funnels and tornadoes. Cold air funnels develop in a shallow cold air mass. Winds from different directions at various levels can produce the spin in the funnel.