See the current world's coldest temperatures listed here:
http://www.wx-now.com/Weather/WxExtremes.aspx
As the extreme cold pushes south from the arctic, warm moist air is moving north east from the Gulf of Mexico. This is causing havoc across much of the eastern states and into eastern Canada with ice storms from Oklahoma to southern Ontario and severe thunderstorms south and east of that line. A Moderate Risk has been issued and tornado watches have been posted for many areas including eastern Texas into Louisiana.
Current storm situation from the Storm Prediction Center:
http://www.spc.noaa.gov/
Some tweets from the ice storm in Oklahoma:
I stop to break the ice off the truck. New data has a lot of QPF from SW- NE OK over night major ice storm.#okwx pic.twitter.com/rKzhUWvz8b
— Jeff Piotrowski (@Jeff_Piotrowski) December 21, 2013
@NatalieTWN no mail today in Prince Edward County! pic.twitter.com/z29T3b8n8Z
— county country homes (@county_country) December 21, 2013
Definitely squirrelproof now RT @ChasingtheMeso A icy morning In SW Oklahoma. #ice #lawton #okwx pic.twitter.com/5DcIFpjVB9
— Jim Cantore (@JimCantore) December 21, 2013
Large, iced up limb comes crashing down while I'm taking pics of tree! Glad I was not under it. #okwx pic.twitter.com/hhvOZqNJfc
— JR Hehnly (@stormchasing) December 21, 2013
#Gemini in Norman, OK RT @okstormchaser: Large old tree split in half in Norman @tornadopayne @JedCastles @LaceySwope pic.twitter.com/nWtOxIcu8L
— TWC Breaking (@TWCBreaking) December 21, 2013