Light PillarsJanuary 22nd, 2013 at 8:23 pm by Bill Steffen under Bill's Blog, Weather
Click the picture to enlarge. I’ve had a couple of emails and calls this evening about people seeing light pillars. These are caused by ice crystals in the air that refract or bend the light from a point source on Earth upward. These seldom occur if the temperature is above +15 (it’s below +10 now) It usually helps to have clear to variably cloudy skies instead of being totally solid overcast all night. Sometimes the clouds are thin and the moon shines right through them. Here’s more images of light pillars. The last day with a high temperature in G.R. as cold as today (10) was 1/15/09 and the last day with a high temperature colder than today was 2/4/07. Also, according to Andy, the climate guru, the high of 10 on Monday made it one of the 151 coldest days (high temperatures) in Grand Rapids since records began in the late 1800s.