Wall cloud in Sterling Friday June 1, 2012 Posted on June 4, 2012 By Mid Atlantic Weather No Comments on Wall cloud in Sterling Friday June 1, 2012 This was taken when a Tornado warning was issued for Sterling VA on 6/1/2012 – My comments during the video are reflective of the fact that I stepped out of a conference call meeting at the time when I looked and saw this storm coming. Video Outlook Tags:Storm, Thunder, Tornado