This Day in Weather History: April 20th

Weather History - April 20th

Local and Regional Events:

April 20th, 1966:

Canadian high pressure brought frigid air to the Rockies and northern Plains. Record lows included three below in Scottsbluff, Nebraska, two below in Cheyenne and Casper, Wyoming, two above in Rapid City, 11 above in Fargo, Williston, and Aberdeen, and 15 in Huron.

April 20th, 2007:

Severe thunderstorms moved through parts of central and northeast South Dakota during the afternoon and evening, producing large hail. The most significant hail measured 1.75 inches in diameter and fell 3 miles east of Westport in Brown County.