Photo posted by MWS

‼ NEW TORNADO WARNING @ 1:36 PM FOR WESTFORD, TYNGSBORO, HARVARD, AYER, GROTON, LITTLETON, PEPPERELL: radar indicated rotation over boxborough heading north. IF IN THE WARNED ZONE, GET INSIDE AND SEEK SHELTER IMMEDIATELY. IF DRIVING, DO NOT PARK IN UNDERPASS, EITHER FIND SHELTER OR STAY IN YOUR CAR