National Weather Service United States Department of Commerce

Severe Weather Expected for the South on Tuesday; Winter Weather Conditions for the West, Central Plains, and Upper Mississippi River Valley

Severe weather is forecast across the middle and lower Mississippi Valley Tuesday afternoon where tornadoes and damaging winds are expected. A strong cold front will track across the Intermountain West accompanied by strong winds, heavy snow and elevated fire weather conditions for portions of the western High Plains with heavy snow likely for Upper Mississippi Valley Tuesday. Read More >

Weather History - April 21st

Local and Regional Events:

April 21, 2007:

Heavy rains of 2 to 2.50 inches caused flash flooding in and around Watertown. Many streets were flooded in town, along with several roads outside of town. A warm front extending across the region was the focus for heavy rain, along with severe weather, during the evening across far northeast South Dakota. Hail up to the size of quarters, along with heavy rains of over 2 inches, caused some flooding mainly in Codington and Hamlin counties.


U.S.A and Global Events for April 21st:

1885: A tornado struck the town of Denison, Texas in 1883 that destroyed a church. The congregation rebuilt the church. On this date, a second tornado destroyed the newly rebuilt church.


1967: Severe thunderstorms spawned 48 tornadoes in the Upper Midwest. Hardest hit was northern Illinois where sixteen tornadoes touched down during the afternoon and evening hours causing fifty million dollars damage. On that Friday afternoon, tornadoes struck Belvidere IL and the Chicago suburb of Oak Lawn, killing 58 persons.


1988: After having had just twelve rainouts in the previous twenty-six years at Dodger Stadium, the third day of heavy rain in southern California rained out a doubleheader at Dodger Stadium, which had been scheduled due to rainouts the previous two days.


Click HERE for more This Day in Weather History from the Southeast Regional Climate Center.