WEST SEATTLE WEATHER: Alki slide

11:52 PM: After a day and night of almost-nonstop rain, a slide is reported – this time behind at least one building in the 1200 block of Alki Avenue SW. SFD and SPD are checking it out for starters; it’s reported to have taken out some trees.

ADDED 10:31 AM: Thanks to Lynn Hall for the photo:

Lynn explains, “Last night’s Alki slide is next door to the even larger slide that occurred last summer and is being repaired by the City of Seattle (plastic on slope is part of that restoration).”

ADDED 11:06 AM: Thanks also to Stewart L. for checking out the scene:

Note the yellow tape; a notice is posted warning people to stay out of the back yard because of the tree danger:

We will be checking with the city later today.

Laura February 2, 2021 (12:27 am)

I’m wondering if the pile driving at Terminal 5 is a good idea. Could it potentially cause slides with the ground so saturated? Thanks for any insight!

WSB February 2, 2021 (10:52 am)

A little too distant.
wscommuter February 2, 2021 (11:43 am)

No. Not possible.
geotechengineer February 2, 2021 (1:21 pm)

At that distance with the methods being used, no.

Rick February 2, 2021 (8:54 am)

Lived on Duwamish Head for 23 years and remember hearing running water from springs in the slope behind my house. Would subside some in summer. Probably not going to stop anytime soon.

CarDriver February 2, 2021 (10:58 am)

As a lifer i remember slides happening in this area back in the ’60’s.

WSB February 2, 2021 (11:05 am)

I’m sure they’ve been happening longer than that. Nonetheless, it’s news. Adding more info momentarily.

Chemist February 2, 2021 (11:28 am)

This is the slide from last spring, which turned out to involve a leak from a private water line and a 8″ combined sewer line? https://westseattleblog.com/2020/06/followup-city-finds-defect-in-sewer-line-near-alki-slide-site/

Beth February 2, 2021 (5:19 pm)

Who/what company do you use to help shore-up slopes to help prevent this…more for small hills near homes vs. large hills of greenbelts flanking homes. Asking for a friend. :)

Joe Z February 2, 2021 (11:24 pm)

The slope behind my house has a spring running out of it that turns to 3 or 4 springs after a good rain. I’ve done a lot of work to mitigate erosion by tearing out all of the invasive species and replacing with slope-stabilizing native plants. The King County Conservation District sells native plants for super cheap ($1-3 per plant). Highly recommend checking out their sale, now is the time to order!

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