Troutdale, OR Severe Weather Alertstar_ratehome

...FLOOD WARNING NOW IN EFFECT FROM TUESDAY MORNING TO EARLY
WEDNESDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Johnson Creek at Sycamore.

* WHEN...From Tuesday morning to early Wednesday morning.

* IMPACTS...Above 11.0 feet, minor flooding begins along Johnson
Creek between SE 92nd Street to SE 122nd Street and between
Johnson Creek and SE Harold Street.

* ADDITIONAL DETAILS...
- At 3:30 PM PST Monday the stage was 4.7 feet.
- Bankfull stage is 10.0 feet.
- Forecast...The river will rise above flood stage late
tonight, then crest near 12 feet early Tuesday morning before
falling below flood stage by late Tuesday evening. There is a
25% chance the river will crest above Moderate flood stage
(13.0 feet) and a 10% chance of cresting above Major flood
stage (14.0 feet) this week.
- Flood stage is 11.0 feet.
- http://www.weather.gov/safety/flood

&&

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY...

* WHAT...Southwest winds 15 to 25 mph with peak gusts up to 35 to 45
mph expected. Winds will be strongest west of the Willamette
Valley, along the Coast Range.

* WHERE...Greater Portland/Vancouver Metro, Northern and Central
Coast Range Valleys and Mountains of Oregon, Willapa Hills and
Adjacent River Valleys of Pacific and Wahkiakum Counties, Lower
Columbia River and Cowlitz River Valleys, Central Willamette
Valley, Clackamas County Cascade Foothills, and South Washington
Cascade Foothills.

* WHEN...Until 4 AM PST Tuesday.

* IMPACTS...Gusty winds combined with very saturated soils will
increase the chances for downed trees and possible power outages.

* ADDITIONAL DETAILS...Winds are not expected to gust at peak
intensity for the entire duration of the advisory. Impacts are
more likely where the highest wind gusts occur. Confidence in the
extent and exact location of impacts is low but confidence in at
least isolated to scattered impacts is high.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects such as garbage cans and
other objects that can easily blow around.

&&

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE THURSDAY NIGHT...

* 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...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. This weather system will
result in an increased risk for flooding. Additional forecast
rain amounts from 4 PM Monday through 4 AM Thursday range
from 2.5 to 5 inches in the Cowlitz Valley, Lower Columbia,
Portland/Vancouver metro and northern Willamette Valley, 1.5
to 2.5 inches in the central Willamette Valley, and 0.75-1.5
inches in the southern Willamette Valley. Forecast rain
amounts reach 6 to 12 inches in the Cascades, Cascade
foothills, Coast Range and the coast, except 1.5-3.5 inches
from Florence to Newport and in areas of higher terrain in
Lane County. Rivers draining the coastal mountains and
several Willamette Tributaries have a 50 to 70% chance of
reaching minor flood stage or higher. The Pudding River at
Aurora and Johnson Creek at Sycamore have an 80% chance of
reaching minor flood stage or higher. Chances for flooding
along the Willamette mainstem remains low at 5-15%. Urban
flooding is possible and water on roadways will increase the
risk of hydroplaning and car accidents. Landslides in areas
of steep terrain will be possible due to saturated soils, as
well as debris flows over recently burned areas.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&