Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro 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!

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Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

South Dakota Tornadoes - 2013