This Day in Weather History: June 20th

On This Day In

Weather History

June 20th

Local and Regional Events:

June 20, 1957:

An F2 tornado moved ENE from near Rockham to near Athol and Ashton. One person was killed as a mobile home was destroyed near the start of the path. Four barns were destroyed, and one home was unroofed.

Also on this day, an F5 tornado cut a swath through Fargo, North Dakota killing 10 and injuring at least 103 people. This tornado was the northernmost confirmed F5 tornado until the Elie, Manitoba tornado on June 22, 2007. Click HERE for more information from NDSU University Archives. Click HERE to read the detailed analysis of the Fargo tornadoes.

June 20, 1989:

A meteorological "hot flash" hit Pierre. Descending air from collapsing thunderstorms caused the temperature in Pierre to warm from 86 degrees at midnight to 96 at one a.m. and to 104 at 2 a.m. Pierre's record high for the date of 105 degrees in 1974.

Local Climate Information:

Click HERE for daily climate information for Aberdeen, Mobridge, Pierre, Sisseton, and Watertown.

Click HERE for daily climate information for Sioux Falls, Huron, Mitchell, and Sioux City.

U.S.A and Global Events for June 20th:

1970: Nesbyen, Norway reached 96 degrees on this day, becoming the warmest temperature recorded in Norway.

The Record of Climatological Observations above is courtesy of the National Centers for Environmental Information.

Nesbyen is located in the upper left corner of the map. Oslo is located on the bottom right corner of the map.

2001: Large hail driven by strong thunderstorm winds raked Denver International and front-range airports. Wind gusting to 54 mph along with hail as large 2 inches in diameter punched at least 14 thousand holes and cracks in the flat roofs of several buildings at Denver International Airport. Also, 93 planes and hundreds of cars were damaged. About 100 flights had to be canceled stranding 1500 travelers. The Airport was completely shut down for about 20 minutes. The storm also damaged ground avoidance radar used to track planes on the ground to prevent collisions. Damage was estimated at 10 million dollars not counting the damage to the 93 airliners. The storm moved south and struck Watkins Colorado with hail as large as 2 1/2 inches in diameter and winds gusting to 60 mph.

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