For those who want to geek out... lol. Warm air advection precip moves in waves. Looks like ripples in the water on high res satellite. Cod site has cloudtop loop so you can track the waves. Dark blues and greens are usually the best precip because of best lift. Right now around and north of winchester has a good band and one is approaching I66
Check out this link
https://weather.cod.edu/satrad/nexrad/index.php?type=LWX-EET-1-12