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Weather History Archive

On This Day In

                   Weather History

August 7th

Local and Regional Events:

August 7, 1968:

From 9 miles north of Isabel, hail up to golf ball size was observed with a severe thunderstorm. This storm continued moving in a southeast direction, causing extensive damage to crops, trees, utility lines, and structures. A radio tower was blown over near Huron, and a wind gust of 115 mph was reported at Huron. A woman was swept from a roof in Huron and was critically injured.

 

August 7, 2009:

A supercell thunderstorm developed across the northern Black Hills and moved eastward across the Sturgis area, southern Meade County, northeastern Pennington County, Haakon County, and northeastern Jackson County. The storm produced baseball sized near Sturgis, then high winds and hail larger than baseball sized developed as the storm moved across the plains. The storm hit Sturgis during the annual motorcycle rally and caused extensive damage to motorcycles, vehicles, and property. Minor injuries from the hail were also reported.

 

August 7, 2010:

An EF4 tornado touched down south of Tyler in Richland County North Dakota and tracked to the northeast for roughly 2.5 miles before crossing the Bois de Sioux River into Wilkin County, Minnesota. In Wilkin County, the tornado continued for another 2.5 miles and lifted about 650 pm CDT. The total track length was about 5 miles, and peak winds were estimated at 175 mph. Click HERE for a YouTube video of the tornado by Andy Gabrielson.

The tornado track map above is courtesy of the Midwestern Regional Climate Center’s Tornado Track Map accessed on 07/08/2016.

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We often think of tornado tracks being a straight line when in fact they are not. The image above shows the tornado curving and bending through farm land. 

The images above are courtesy of the Richland County Emergency Manager and the NWS Office in Grand Forks, North Dakota.

 

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 August 7th:

1924: A tornado caused estimated F4 damage moved southeast from south of Osseo, WI to Black River Falls, WI. One person was killed as a home was leveled and a boy was killed running to the storm cellar near the start of the path. Two people died as farm homes were swept away near the northeast edge of Black River Falls. Damage totaled $200,000 as 50 farms were hit and buildings were unroofed in the town of Northfield. The tornado followed the present route of Interstate 94. Click HERE for storm damage from the Wisconsin Historical Society.

 

1980: Hurricane Allen bottomed out at 899 millibars (26.55 inches of mercury) while moving through the Yucatan Channel in the southeastern part of the Gulf of Mexico. Allen was the second lowest pressure ever recorded in the Western Hemisphere up to that time. Allen's winds at the time were sustained at 190 mph.

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Hurricane Allen on August 7th, 1980. The image is courtesy of NOAA.

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