The Shenandoah Valley forecast for Thursday and Friday shows the chance for more measurable snow Thursday evening through Friday morning...with the possibility of another 3-4" of snow for Harrisonburg and the surrounding areas. From the NWS:
Thursday
A chance of rain and snow after 2pm. Partly sunny, with a high near 42. Light and variable wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.
Thursday night
A chance of rain and snow before 8pm, then snow. Low around 18. Chance of precipitation is 80%.
Friday
A chance of snow before 8am. Mostly sunny, with a high near 30. Chance of precipitation is 40%.