National Weather Service United States Department of Commerce

Tracking Storms with Impacts in the Northwest and Northeast U.S.

A Pacific storm will move across the Northwest U.S. through Thursday with low elevation rainfall, gusty winds, and mountain snows. A storm crossing the Northeast U.S. will continue gusty to high winds, scattered rain showers and limited snow showers into Thursday. Read More >

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.