South West City, Missouri

... EF-1 tornado confirmed in Barry into stone counties...

* date... 05/20/2013
* begin location... 2.3 miles northeast of Shell Knob
* end location... 3.7 miles northeast of Shell Knob
* estimated begin time... 750 PM CDT
* estimated end time... 752 PM CDT
* maximum ef-scale rating... EF-1
* estimated maximum wind speed... 110 mph
* estimated path width... 200 yards
* path length... 1.4 miles
* fatalities... 0
* injuries... 0
* begin lat/Lon... 36.6293 N / -93.5842 W
* end lat/Lon... 36.6423 N / -93.5670 W

* this preliminary information was determined by a National
Weather Service survey team and is subject to change pending
final review of the event and publication in National Weather
Service storm data.

Additional information...

A tornado rated EF-0 initially touched down 2.3 miles northeast of
Shell Knob and became an EF-1 tornado about 2.75 miles northeast
of Shell Knob and then became an EF-0 tornado for the duration of
its path. This tornado uprooted and damaged trees along its 1.4
mile long path with maximum estimated wind speeds of 110 mph.


This information can also be found on our website at
weather.Gov/sgf.

For reference... the Enhanced Fujita scale classifies tornadoes
into the following categories:

EF0... wind speeds 65 to 85 mph.
EF1... wind speeds 86 to 110 mph.
EF2... wind speeds 111 to 135 mph.
EF3... wind speeds 136 to 165 mph.
EF4... wind speeds 166 to 200 mph.
EF5... wind speeds greater than 200 mph.


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