Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. 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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Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

South Dakota Tornadoes - 2013