Roanoke The National Weather Service meteorologists completed the storm survey of the tornadoes in Franklin and Bedford counties.
We have taken the data points and put them into our weather computers, along with topography to show you an amazing vantage point of how the tornadoes formed, strengthened and lifted.
FRANKLIN COUNTY TORNADO
The tornado touched down as an EF1 then moved northeast. Despite popular belief, tornadoes CAN cross mountains. In fact, this one went OVER it, and when it wend down the other side, it got stronger, reaching EF2 status, then EF3 status as it crossed Route 220.
There has been local research done by former Virginia Tech Meteorology student, Kathryn Prociv, that suggests during just the right conditions, tornadoes can actually form or intensify as they go down a mountainside.. Could this have been the case this time as it crossed Brier Mountain?
BEDFORD COUNTY TORNADO
The same storm that spawned the tornado in Franklin county moved into Bedford county and split into two cells. One of them crossed Route 460 before dropping a smaller EF1 tornado. Only this time, as the tornado started going up the mountain, it began lifting and quickly dissipated.
Additional storm surveys will be conducted in Halifax county on Monday..