Tornado

Tornado Map(Requires Adobe©Acrobat)

The link above is a national map of tornado zones indicating that Virginia has 1-5 reported tornados per 1,000 sq. miles.

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Wind Zones(Requires Adobe©Acrobat)

National map of wind zones indicates that most of Virginia is in Zone III (200 mph winds), while the rest of the state is in a hurricane-susceptible region within Zone II (160 mph winds).  The planning district seems to be in Zone III, but is fairly close to the line.

Table indicates that areas with 1-5 tornadoes per 1,000 sq. miles that are also in Zone II have a moderate risk of tornadoes.  In moderate risk areas, "shelter should be considered for protection from high winds."  Since this Zone II area is also a hurricane-susceptible zone, "shelter is preferred method of protection from high winds."  In areas with 1-5 tornadoes per 1,000 sq. miles that are also in Zone III, there is a high risk of tornadoes.  This means that "shelter is preferred method of protection from high winds." 

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NOAA website on Tornadoes in Virginia