The 00z EPS shows a very cold looking pattern emerging during the day 11-15 time frame. This the day 15 500mb Hght/Anomaly looks. Notice very cold vortex over Canada. -EPO. Last 3/4 of February looking cold for the US. pic.twitter.com/bJmHfTRCI7

— Allan Huffman (@RaleighWx) January 21, 2018