We are delaying the onset of the bitterly cold air 2-3 days as the polar jet shifts north a bit north allowing the southern jet (active all winter) to gain some influence. This also means that another system seems to be developing around Valentine’s Day! (see my Jan 28 tweet) pic.twitter.com/imndvW7TDr

— Scott Sabol, Meteorologist CBM/CCM (@ScottSabolFOX8) February 4, 2021