Snow has returned and will keep whitening Chicago as the weekend comes to a close.
Heavy snow is creating hazardous travel, multiple vehicle crashes and flight delays across the Northeast.
While heavy snow and ice are not expected to fall over much of the Midwest through Monday, some slippery roads and travel disruptions are likely.
As the saying goes, no two snowflakes are exactly alike. Russian photographer Alexey Kljatov's collection of high-resolution magnified flakes makes this widely-held belief more convincing.
Travel will remain slippery around Washington, D.C., through Sunday night as snow and an icy mix persists.
A winter storm consisting of snow and an icy mix spread across the Ohio Valley, mid-Atlantic and Northeast on Sunday.
Elkton, MD (1963)
Jet liner exploded near Elkton, MD killing all 81 on board. Lightning is believed to have caused the explosion of residual fuel under one of the outboard wing tanks as plane passed through a vicious thunderstorm.
LaMesa, CA (1938)
100 degrees, warmest ever in US for Dec. Downtown LA had 91.7 degrees, only 90 degree reading in December.