The High Plains and portions of Texas will become the targets of spotty, but violent storms Friday evening.
Another plunge of chilly air will set the stage for the risk of a frost and freeze centered Michigan, Ohio, West Virginia and other nearby states this weekend.
During Sunday's race, the skies will be variably cloud with the risk of a few showers.
Severe weather and drenching downpours will affect parts of the Plains and Midwest over the Memorial Day Weekend.
With one day remaining before Memorial Day weekend, the Sandy-battered Jersey coastline is hustling to finish last-minute preparations.
The Memorial Day weekend will begin nasty with wind, rain and chill in New England and part of the mid-Atlantic.
Knoxville, TN (1807)
Hail 10" in circumference hail; a tornado went over the river, sucking fish out of the water.
West Coast (1982)
Heat wave: San Francisco, CA 91 degrees, (new record; previous record 79 in 1975) San Jose, CA 84 degrees Portland, OR 85 degrees (tied record)
Snowstorm across state; daytime accumulation of 4-6".