Flood Watch issued December 7 at 1:29AM PST until December 12 at 4:00AM PST by NWS Portland OR
* WHAT...River and urban flooding caused by excessive rainfall is
possible. Landslides possible in areas of steep terrain, and
debris flows possible over recently burned areas.
* WHERE...Counties in Oregon: Benton, Clackamas, Clatsop, Columbia,
Hood River, Lane, Lincoln, Linn, Marion, Multnomah, Polk,
Tillamook, Washington, and Yamhill.
Counties in Washington: Clark, Cowlitz, Pacific, Skamania, and
Wahkiakum.
* WHEN...From late tonight through late Thursday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Landslides and debris flows are possible during this flood event.
People, structures, and roads located below steep slopes, in
canyons, and near the mouths of canyons may be at serious risk
from rapidly moving landslides.
* ADDITIONAL DETAILS...
- A prolonged atmospheric river is expected to bring periods of
heavy rain to northwest Oregon and southwest Washington
Monday through Wednesday, with periods of lighter rain
continuing Thursday into Friday. Rivers draining the coastal
mountains and several Willamette Tributaries have the highest
chance of flooding at 40 to 80%. Chances for flooding along
the Willamette mainstem remains low at less than 10%. Urban
flooding is possible and water on roadways will increase the
risk of hydroplaning. Landslides in areas of steep terrain
will be possible, as well as debris flows over recently
burned areas.
- http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Varoitus voimassa ma klo 14:00 - pe klo 14:00
