Update for 3 pm, Sept. 15
The suspect was arrested at 2:11 pm and the matter was resolved peacefully.

Please click the photo above for a slideshow of the standoff.

A Seattle Police negotiator, partially obscured from the suspect's view behind a SWAT vehicle with armed SWAT members behind him, spent over an hour speaking with the standoff suspect who was located on the upper porch of his two story home.

At times the negotiator talked to the suspect about sports and favorite teams in an attempt to calm the man who could often be heard yelling about problems he was having with his brother.

While the negotiator and suspect talked a separate SWAT team gained access to the rear of the home from an alleyway and were able to subdue the suspect on the porch, according to SW Precinct Captain Steve Paulsen.

The suspect was taken to Harborview Medical Center for a mental evaluation.

This story will be updated as more information comes in.

Original post
Two brothers, with one that threatened another in a domestic disturbance, brought two Seattle Police SWAT vehicles to the 7900 block of 18th s.w. around 1:00 pm on Thursday. One brother left the scene but the remaining brother, in emotional distress, in the house and according to Captain Stephen Paulsen, "It started out as a disturbance with a possible weapon involved and right now we have people talking to him and hopefully we can gain a peaceful resolution to this with nobody getting hurt. We have all the resources we need to insure that happens and taking baby steps as we work through it."