Winchester area received a series of thunderstorms from around 11PM last night.  It accounted for a 11 hours of estimated leaf wetness event with an average temperature of 60F.  It was risk event for Phomopsis Black rot, downy mildew, and Botrytis infection.

Also, we are having several warm humid nights in a row due to rains.  Downy mildew pathogen prefers this type of condition for production of spores.