Sorry to say that there have been 2 isolated confirmed reports of late 
blight in the Northeast, one in locally grown greenhouse tomato 
transplants in the Northwest region of Pennsylvania and the other in a 
southern MD high tunnel on tomatoes started from seed. It is not yet 
clear where the inoculum came from.

I will be compiling more information for growers in coming newsletters 
but this is a reminder to be vigilant for the disease on tomato 
transplants and on potato tubers early in the season, and to be prepared 
to prevent it if. A good summary with many useful links is at UMass 
Extension:  
http://www.umassvegetable.org/LateBlightAlertforTomatoandPotato.html

Hopefully weather will stay mostly dry and hot as this will limit spread 
of the disease.

Vern