Late blight has been found in a tomato greenhouse operation just across the state line near Winchester, VA. We are working to get more information and samples. In the meantime, potato and tomato growers in that part of the Commonwealth are urged to take preventative measures and scout their crops. The cool and rainy weather has provided a conducive climate for spread of this disease. For information on late blight please visit the following extension publication and please let me know if you have any questions or encounter any suspicious samples:
http://pubs.ext.vt.edu/ANR/ANR-6/ANR-6_pdf.pdf