Storm could cause additional landslides this weekend

A mudslide in the Tillamook State Forest closed OR 6 (Wilson River Highway) on Wednesday, March 26, 2014. (KOIN)
A mudslide in the Tillamook State Forest closed OR 6 (Wilson River Highway) on Wednesday, March 26, 2014. (KOIN)

PORTLAND, Ore. (KOIN) — The National Weather Service (NWS) warned Thursday that storms for northwest Oregon and southwest Washington could cause additional landslides this weekend.

A strong, wet storm is anticipated to impact northwest Oregon and southwest Washington Thursday night, NWS announced. Saturated soil conditions could lead to additional landslides, especially in the Coast Range, Willapa Hills, North Oregon Cascades and Columbia River Gorge.

While landslides are possible, NWS said flooding is not expected. However, motorists should exercise caution while traveling.

NWS reported that people, structures and roads located below steep slopes in canyons and near the mouths of canyons may be at serious risk.

According to the Oregon Department of Geology and Mineral Industries, the most dangerous places include:

  • Canyon bottoms, stream channels, and areas of rock and soil accumulation at the outlets of canyons.
  • Bases of steep hillsides.
  • Road cuts or other areas where slopes of hills have been excavated or over-steepened.
  • Places where slides or debris flows have occurred in the past.

The additional concerns on Thursday come after a landslide shutdown OR 6 and an uphill slope movement closed roads in Longview, Washington, earlier this week.

To find out if your home is in a landslide prone area, visit the state’s oregongeology.gov website. On the site, you can type in your own address or plan out a weekend trip to see if your destination is in a dangerous path.

Stay with KOIN 6 News and KOIN.com for the latest weather developments through the weekend.

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Uphill slope movement closes Longview road

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