* WHAT...Heavy snow possible. Total snow accumulations between 10
and 20 inches possible. Winds could gust as high as 50 mph on the
ridgetops.
* WHERE...Plain and Leavenworth.
* WHEN...From Tuesday afternoon through Wednesday evening.
* IMPACTS...Travel could be very difficult. Light snow will develop
during the Tuesday evening commute with heavy snow by the
Wednesday morning commute. Gusty winds could bring down tree
branches.
* ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour will
be possible at times.
* WHAT...Heavy snow possible. Total snow accumulations between 4 and
10 inches possible with local amounts near a foot. Winds could
gust as high as 45 mph on the Waterville Plateau.
* WHERE...Waterville, Number 2 Canyon, Entiat, Number 1 Canyon,
Badger Mountain Road, Mansfield, Chelan, Wenatchee, Pangborn
Airport, and Cashmere.
* WHEN...From Tuesday afternoon through Wednesday evening.
* IMPACTS...Travel could be very difficult. Light snow will develop
during the Tuesday evening and heavy snow will be possible by the
Wednesday morning commute. Gusty winds could bring down tree
branches and create blowing snow over the Waterville Plateau.
* ADDITIONAL DETAILS...Snowfall rates of 1 inch per hour will be
possible at times.
* WHAT...For the Winter Storm Warning, heavy snow. Additional snow
accumulations up to 5 inches. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 10 and 20 inches
possible. Winds could gust as high as 50 mph on the ridgetops and
through the passes.
* WHERE...Stehekin, Stevens Pass, and Holden Village.
* WHEN...For the Winter Storm Warning, until 4 PM PST this
afternoon. For the Winter Storm Watch, from Tuesday afternoon
through Wednesday evening.
* IMPACTS...Travel could be very difficult. Be sure to have a
vehicle emergency supply kit when traveling. Areas of blowing
snow could significantly reduce visibility. Strong winds could
cause damage to trees and power lines.
* ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour will
be possible at times.
* WHAT...Heavy snow above 2000 feet. Additional snow accumulations
of 10 to 15 inches, locally higher near the crest line. Winds
gusting as high as 35 mph.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Monday morning and evening
commutes.
* ADDITIONAL DETAILS...Light snow accumulations will continue after
the warning expires into Tuesday morning with limited additional
impacts.
* WHAT...Heavy snow Above 4000 ft. Additional snow accumulations of
4 to 7 inches. Winds gusting as high as 40 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
* WHAT...Heavy snow above 2500 ft. Additional snow accumulations of
4 to 8 inches at pass level and 8 to 12 inches over the Cascade
crest. Winds gusting as high as 35 mph.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Significant snowfall with periods of heavy snowfall
rates will combine with low visibility to create very difficult
driving conditions.
* WHAT...Sneaker waves possible.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Through Monday evening.
* IMPACTS...Waves can run up significantly farther on a beach than
normal, including over rocks and jetties. Sneaker waves can
suddenly knock people off of their feet and quickly pull them
into the frigid ocean which may lead to serious injury or
drowning.
* WHAT...Heavy snow at or above elevations greater than 2000 ft.
Additional snow accumulations between 6 and 12 inches.
* WHERE...West Slopes North Cascades and Passes, West Slopes North
Central Cascades and Passes, and West Slopes South Central
Cascades and Passes.
* WHEN...Until 10 AM PST Monday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult.
* WHAT...Sneaker waves possible.
* WHERE...Clatsop and Tillamook Coast, and South Washington
Coast.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Waves can run up significantly farther on a beach than
normal, including over rocks and jetties. Sneaker waves can
suddenly knock people off of their feet and quickly pull them
into the frigid ocean which may lead to serious injury or
drowning.
* WHAT...Heavy snow above 2500 ft. Additional snow accumulations of
5 to 10 inches at pass level and 1 to 2 feet over the Cascade
crest. Winds gusting as high as 35 mph.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Significant snowfall with periods of heavy snowfall
rates will combine with low visibility to create very difficult
driving conditions.
* WHAT...Heavy snow above 4000 feet. Additional snow accumulations
up to 8 inches. Winds gusting as high as 40 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
* WHAT...Heavy snow expected above 2500 feet. Total snow
accumulations up to 10 to 20 inches, locally higher near the crest
line. Winds gusting as high as 35 mph.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Travel could be very difficult.
* WHAT...Heavy snow expected. Additional snow accumulations of 4 to
12 inches above 4000 feet.
* WHERE...Stevens Pass, Holden Village, Washington Pass, and Loup
Loup Pass.
* WHEN...Until 4 PM PST Monday.
* IMPACTS...Travel could be very difficult over mountain passes.
ESFPQR
A series of storms will bring ample precipitation to Northwest
Oregon and Southwest Washington this week. Of particular concern is
the potential for heavy rain Tuesday night through Friday morning,
which could result in some flooding for area creeks and rivers.
The latest projections of the most likely amounts for storm total
precipitation are a little lower today than yesterday's forecasts.
Amounts range from 3.5 to 6 inches for the Coast, Coast Range, and
Cascades, with 1.5 to 3 inches for inland valley locations,
including Portland, Salem, and Eugene. Upper end projections, with
about a 10 percent chance of occurring, range from 6 to 10 inches
for the Coast, Coast Range, and Cascades, and 2.5 to 3.5 inches for
inland valleys. Snowmelt in the Cascades from 2000 to 4000 feet
elevation could add runoff, although runoff from heavy rain would be
the main driver for any flooding that occurs.
Rivers will rise starting Wednesday. Small streams and
fast-responding rivers could see flooding as early as Wednesday
night or Thursday, with slow-responding rivers potentially flooding
by this weekend. Heavy rainfall will also cause water ponding in low
lying areas and other areas of poor drainage.
Monitor weather.gov/portland for the latest updates and any watches,
warnings, or advisories that may be issued for this event.
* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...San Juan County, Western Whatcom County, Southwest
Interior, Western Skagit County, Everett and Vicinity, Tacoma
Area, Admiralty Inlet Area, Hood Canal Area, Seattle and
Vicinity and Bremerton and Vicinity zones.
* WHEN...From 5 AM to 10 AM PST Monday.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...Eastern Strait of Juan de Fuca and Western Strait of
Juan De Fuca zones.
* WHEN...Until 5 PM PST this afternoon.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
* WHAT...Significant coastal flooding expected. Inundation of
around 2.5 feet above ground level is possible along shorelines
and low-lying coastal areas.
* WHERE...North Coast and Central Coast zones.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Significant coastal flooding due to high tides and
storm surge is expected. This is expected to lead to numerous
road closures. Low lying property including homes, businesses,
and some critical infrastructure may be inundated. Shoreline
erosion or damage may occur.
Heavy rainfall in the Olympics will force sharp rises on the
Skokomish River in Mason County Tuesday night and Wednesday with
flooding possible.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...From late Tuesday night through Wednesday afternoon.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Two to three inches of rain in the Olympics will force sharp
rises on the Skokomish River with flooding possible.
- http://www.weather.gov/safety/flood
* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...Eastern Strait of Juan de Fuca and Western Strait of
Juan De Fuca zones.
* WHEN...Until 5 PM PST this afternoon.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
* WHAT...Significant coastal flooding expected. Inundation of
around 2.5 feet above ground level is possible along shorelines
and low-lying coastal areas.
* WHERE...North Coast and Central Coast zones.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Significant coastal flooding due to high tides and
storm surge is expected. This is expected to lead to numerous
road closures. Low lying property including homes, businesses,
and some critical infrastructure may be inundated. Shorline
erosion or damage may occur.
