DCist reader Damian Bednarz sends in this image, from Woodley Place and Cathedral Drive in Woodley Park, of a once mighty tree felled by the unforgiving weight of 20 inches of frozen water. Downed trees are just one more hazard we need to be mindful of as we wait out the rest of this potentially historic storm.

If you come across or notice a tree has fallen down, the city is asking you to call 311 to report it. Try to provide as much specific information about the tree’s location as you can, including a street address whenever possible. DDOT’s Urban Forestry crews will be out moving fallen trees during and after the storm.

Of course, with fallen trees sometimes come downed power lines. If you come across any live wires, it’s best to a) don’t go near them, obviously, and b) call 911 or Pepco’s emergency number at 1-877-PEPCO-62 (1-877-737-2662).