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Weather History Archive

Weather History - July 11th

Local and Regional Events:

July 11, 1909:

A deadly, estimated F2 tornado moved ESE across the Simpson Park section of Big Stone City in South Dakota. A bus was thrown from the road, and the driver was killed. Two homes and several barns were destroyed. As the tornado crossed the foot of Big Stone Lake, it tore apart a railroad yard and killed four of the 26 Armenian laborers who were living in box cars at Ortonville, Minnesota. Nineteen were injured.


July 11, 1981:

Severe thunderstorms moved eastward across the entire length of the South Dakota along the northern portion of the state. Hail, with the largest up to nine inches in circumference, resulted in 100 percent crop loss, damage to numerous buildings and loss of livestock. Trees were stripped, and large limbs were broken. High winds also accompanied these storms. Storms lasted into the early morning hours on the 12. Thunderhawk in Corson County had estimated winds of 70 to 75 mph that destroyed a machine shop and seven metal grain storage bins. In and around Pollock, a silo was moved three feet off the foundation. Power and telephones lines were down. Rainfall measured 2.28 inches in two hours in Pollock.


U.S.A and Global Events for July 11th:

1936: From July 5-17, temperatures exceeding 111 degrees in Manitoba and Ontario claimed 1,180 lives (mostly the elderly and infants) during the most prolonged, deadliest heat wave on record. Four hundred of these deaths were caused by people who drowned seeking refuge from the heat. In fact, the heat was so intense that steel rail lines and bridge girders twisted, sidewalks buckled, crops wilted and fruit baked on trees. Some record temperatures include; 112 degrees at St. Albans and Emerson, Manitoba, 111 at Brandon, Manitoba, 108 at Atikokan, Ontario, and Winnipeg, Manitoba.


1990: The costliest hailstorm in U.S. history occurred along the Front Range of the Colorado Rockies. (Denver, Colorado): Softball-sized hail destroyed roofs and cars, causing more than $600 million in total damage.


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