4:49 PM: If you’re heading toward the southbound Alaskan Way Viaduct downtown – you’ll want to avoid the Columbia entrance. Seattle Police report that they’re talking with “an armed man in crisis, currently barricaded in the 800 block of Post Ave” and @jhewiz points out via this Instagram image that this is happening right alongside the Columbia onramp [map].
5:11 PM: Police confirmed via Twitter the man was taken into custody “peacefully.”
P.S. Here’s a recap via SPD Blotter.