Tourists hitting the Las Vegas Strip this week are witnessing rare snowfall.
Las Vegas' airport measured .3 inches Thursday morning, making Feb. 21 the fifth snow day for February 2019, tying the record for number of February snow days set in 1974.
West Summerlin, located just outside Las Vegas, saw over seven inches of snow.
As a winter storm walloped the Southwest, parts of Arizona saw over 2 feet of snow, and snow also fell in the mountains outside of Los Angeles and San Diego.
Winter storm warnings continue Thursday for five southwestern states -– Nevada, Arizona, New Mexico, Utah and Colorado -- as more snow is on the way.
Friday night into Saturday morning, the central and northern Plains will see heavy snow while the southern Plains will be hit with rain.
Ongoing heavy rain and flash floods are threatening the South through the weekend, from Arkansas to Memphis to Nashville to West Virginia.
Damaging wind gusts, hail and tornadoes are all possible on Saturday across the South, lower Mississippi Valley and Tennessee Valley.
On Saturday heavy snow and whiteout conditions are expected across the upper Midwest where parts of Minnesota and Wisconsin are having their snowiest February on record.
The Northeast will get a blast of heavy rain Saturday night into Sunday morning, from Washington, D.C., to New York City to Boston.