National Weather Service United States Department of Commerce

Expanding Heat Wave; Heavy Rainfall Across the Upper Midwest and Gulf Coast; Snow for the Northern Rockies; Critical Fire Weather for Southwest

Diverse pattern across the country with accumulating heavy wet snow across the northern Rockies into the new week. Meanwhile, deep tropical moisture is expected to move ashore across the Gulf Coast States with the threat of heavy rainfall. This threat extends into the upper Midwest where flash flooding and a few severe storms. In addition, a heat wave is building from the Plains into Northeast. Read More >


2013 South Dakota Tornadoes

Below is a plot of the tornadoes which occurred in South Dakota in 2013 (click to enlarge):

Below is a brief summary of the 2013 tornado season:

·         2013 was a relatively quiet year with only 14 tornadoes reported across the State

·         Here is the breakdown of 2013 tornadoes by EF-Scale:

o   EF0 = 11

o   EF1 = 3

o   EF2 = 0

o   EF3 = 0

o   EF4 = 0

o   EF5 = 0

·         South Dakota averages about 35 tornadoes per year (based on 2001-2010 data)

·         South Dakota has now seen a below average number of tornadoes since 2010 (click to enlarge)


Below is the 10 year total of tornado fatalities by state (2001-2010):


Fortunately – South Dakota has not had a directly related tornado death since 1999!  Hopefully that trend continues for years to come!