Damaging Wind Event Getting Started?

Courtesy of the NWS Storm Prediction Center, there are two lines of thunderstorms that are candidates to intensify and produce damaging winds. Both are indicated by the yellow arrows.

The red lines on the map are relative probability of a derecho. Values are very high in western Pennsylvania (anything 6 or above is considered sufficient) and these values typically rise in the afternoon.

So, I think we can see the "whites of its eyes" for this event. Please see postings below for preparatory suggestions.