The press release sort of speaks for itself, read on for precautions due to Tropical Storm Hanna:

       Due to the impending arrival of Tropical Storm Hanna and its
potential impact on the area, County Manager Virgil R. Hazelett, P.E.
has authorized a declaration of local emergency for Henrico County.
Residents are advised to take the following measures and precautions:

*       During the storm, stay indoors and away from windows.
*       Secure or bring indoors lawn furniture, garbage cans or other
items   that may be affected by strong winds.
*       If a tornado warning is issued, move quickly to an interior room
of      your home or building.
*       Avoid using candles during a power outage; use flashlights
instead. Do     not cook with open flames indoors.
*       Generators should only be operated outdoors in a
well-ventilated, dry    area; never operate a generator indoors or in an
attached garage.
*       Watch for downed power lines and weakened structures.
*       Never attempt to drive through standing water. If you cannot see
the     lines on the roadway, do not drive in the water.