Aaron Ross make sure you don't bid on judgements for junior liens as these would still be subject to the senior liens and may put you at a loss.

I could see someone living in Seattle buying that area with the idea to retire out of the rain one day.and you could head up river as well there are some smaller towns that might have some deals.

Another is the, shall I say "rain". ;-) Anyway, If you want to see real cash flow numbers:Average Turnkey Cash Flow Per Door In PhoenixMetro Area No Bank Financing Neededhttps://www.biggerpockets.com/forums/600/topics/584916-average-cash-flow-per-door-in-phoenix-metro-areaEven people from So Cal (CA) can see the difference in the numbers.

Like after a rain storm with thunder and lightning 

It rains 9 months out of the year here. :)

Runoff issues can be seasonal, with spikes of certain pollutants after heavy snow melt or rain events.  

I still vote to do it .It like taking an umbrella with you before you walk out the door on a cloudy day with a forecast of a  chance for rain.

Out of the liens you listed the one I would be most concerned about would be a lis pendens because that is a notification that the owner is being sued and any judgement will attach to the house as a lien.

I met an agent this side of Knoxville, and she said,She was selling homes in Gatlinburg,I climbed up in my chair all warm, nice and cozy,Thought I'd soon be hearing from her...But tears filled my eyes when I found out she was gone, Smoky Mountain rain, I keep on call'n, keep on call'n, her nameSmoky Mountain rain, it keeps fall'n, I keep on call'n.But she's somewhere in the Smoky Mountain rain."

I can tell you that the other day it rained a bunch and the canals and Chattahoochee River was literally almost overflowing over the sea walls on some waterfront property.