On Halloween, in 1991 the Sioux Falls area was hit with over 15 inches of snow and several days of cold.

In 2012, Meteorologist Shawn Cable from KSFY-TV did this great recap of the storm. Complete with some awesome video of Sioux Falls in 1991.

The storm was part of a bigger system that dumped snow all over the Upper Midwest. Duluth, Minnesota ended up with over 35 inches of snow!

In fact, this storm was set up, in part, by the weather patterns that caused the "Perfect Storm" that struck the East Coast of the United States, and was famously depicted in Sebastian Junger's book. Moreover, the "Perfect Storm" was beginning to wind down in the Northeast on Halloween, around the same time that Minnesota was starting to see heavy snow creeping in. To have two exceptional storms impacting the continental United States at the same time is quite rare. -NWS Duluth