bitten by backdoors

Block that metaphor!

This just in (a couple weeks ago, when I forgot to post it) from the National Weather Service forecast (which always uses all-caps):

A MODERATION TREND IS EXPECTED TO TAKE HOLD THE LATTER PART OF NEXT WEEK. WE SOMETIMES GET BITTEN BY BACKDOORS FROM NEW ENG WHICH MIGHT BE THE ONLY FLY IN THAT OINTMENT.

Thanks to Melissa R for passing that along.