National Weather Service United States Department of Commerce

Atmospheric River Continues to Impact the Northwest U.S.; Gusty to High Winds in the Northeast U.S.

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. Wednesday into Thursday with gusty to high winds and areas of rain and high elevation snow showers. 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):

http://www.spc.noaa.gov/wcm/ustormaps/2001-2010-fatals.png

 

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