Geos

Nice write up on the storm. http://www.weather.gov/cle/event_20160408_snow

Impressive total. Was the snow heavy enough to cause tree limbs to break or cause power outages?

Here it is: http://www.nytimes.com/1996/02/02/us/montana-journal-where-the-wind-chill-has-been-90.html

It was mentioned in a news article. I'll see if I can find it again. Hopefully I converted to the new scale correctly. - But there was mention of -90 wind chills in areas of the state that morning. Of course that would be on the old scale.

Morning of 01/30/96 north central Montana had lows as extreme -40°, even some unofficial locations approaching -50° near the Canadian border. Estimated wind chills on the new scale were pushing close to -75 - -80° with 15-20mph winds.

Sioux Falls, South Dakota. 2/9/1899: -42° (all time record low) estimated wind chill -65°. (new scale)

Lowest Iowa wind chill readings I could find. Spencer and Estherville hit -45°F (new scale) on the morning of February 10, 2008. Probably some lower ones at some time during record keeping.

So there was no wind data taken back then? What kind of temperatures were there? Graphic from GRB: National Weather Service Forecast Offices have adjusted the threshold values of Wind Chill Temperatures that trigger Wind Chill Advisories and Wind Chill Warnings, to reflect the new formula. Here's the formula: Wind Chill (F) = 35.74 + 0.6215T - 35.75(V0.16) + 0.4275T(V0.16) Where V = the wind speed value in mph and T = the temperature in �F Note: Frostbite occurs in 30 minutes or less at wind chill values of -18 or lower. Beavis - BTW, good thread idea.

That one really frigid February several years back there was wind chills around -35°F at Waukegan. For Madison, WI at least: -54°F was the lowest wind chill on January 20, 1985 between 4-5am. http://host.madison....1cc4c002e0.html