* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...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 4 AM to 10 AM PST Sunday.
* 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.
Colder air moving into the area behind a cold front will lower snow
levels in the Cascades to near 2000 feet Sunday morning. Snow levels
remaining near 2000 feet into Monday morning.
* WHAT...Heavy snow expected at or above elevations greater than
2000 ft. Total snow accumulations between 6 and 18 inches.
Heaviest accumulations likely near Stevens Pass with a convergence
zone.
* WHERE...West Slopes North Cascades and Passes, West Slopes North
Central Cascades and Passes, and West Slopes South Central
Cascades and Passes.
* WHEN...From 5 AM Sunday to 10 AM PST Monday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult.
...WINTER WEATHER HIGHLIGHTS...
.An upper level trough will push a warm front across the region
overnight followed by a cold frontal passage late Sunday. Snow
levels will start out low and then rise overnight through Sunday
before lowering again late Sunday. This will produce some initial
mountain snow tonight, with some freezing rain also possible, before
turning to rain then returning to snow late Sunday through Monday.
* WHAT...Heavy mixed precipitation Above 4000 ft. Additional snow
accumulations between 8 and 11 inches...and ice accumulations
around one tenth of an inch tonight through Sunday morning. Total
snow accumulations 3 to 6 inches below 4000 feet. 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.
...WINTER WEATHER HIGHLIGHTS...
.An upper level trough will push a warm front across the region
overnight followed by a cold frontal passage late Sunday. Snow
levels will start out low and then rise overnight through Sunday
before lowering again late Sunday. This will produce some initial
mountain snow tonight, with some freezing rain also possible, before
turning to rain then returning to snow late Sunday through Monday.
* WHAT...Heavy mixed precipitation above 2500 ft. Additional snow
accumulations around 10 inches at pass level and up to 15 inches
over the higher mountains. Ice accumulations around a light glaze
tonight. 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.
...WINTER WEATHER HIGHLIGHTS...
.An upper level trough will push a warm front across the region
overnight followed by a cold frontal passage late Sunday. Snow
levels will start out low and then rise overnight through Sunday
before lowering again late Sunday. This will produce some initial
mountain snow tonight, with some freezing rain also possible, before
turning to rain then returning to snow late Sunday through Monday.
* WHAT...Heavy mixed precipitation Above 4000 ft. Additional snow
accumulations between 8 and 11 inches...and ice accumulations
around one tenth of an inch tonight through Sunday morning. Total
snow accumulations 3 to 6 inches below 4000 feet. 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.
...WINTER WEATHER HIGHLIGHTS...
.An upper level trough will push a warm front across the region
overnight followed by a cold frontal passage late Sunday. Snow
levels will start out low and then rise overnight through Sunday
before lowering again late Sunday. This will produce some initial
mountain snow tonight, with some freezing rain also possible, before
turning to rain then returning to snow late Sunday through Monday.
* WHAT...Heavy snow expected mainly along the Cascade crest with
total snow accumulations between 8 and 15 inches. Lower elevations
including LaPine, Sunriver, Sisters and Camp Sherman will see
lesser amounts of snow on the order of 3 to 8 inches. Winds
gusting as high as 35 mph may cause some blowing snow mainly along
the Cascade crest.
* WHERE...East Slopes of the Oregon Cascades.
* WHEN...From 10 AM Sunday to 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 expected. Total snow accumulations of 12 to 24
inches above 4000 feet and 1 to 6 inches in the valleys.
* WHERE...Twisp, Holden Village, Conconully, Stehekin, Stevens Pass,
Mazama, Winthrop, Loup Loup Pass, and Methow.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Travel could be very difficult over mountain passes.
* ADDITIONAL DETAILS...Snow will briefly transition to rain over
Stevens Pass Sunday morning before changing back to snow Sunday
afternoon. Slushy conditions are possible where rain occurs.
* WHAT...Snow expected. Total snow accumulations of 3 to 8 inches
above 2500 feet with 1 to 4 inches below 2500 feet.
* WHERE...Plain, Leavenworth, and Blewett Pass.
* WHEN...Until 10 PM PST Sunday.
* IMPACTS...Travel could be difficult.
* ADDITIONAL DETAILS...Most of the expected accumulations will occur
this evening before snow levels rise.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...Through Sunday morning.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded.
* ADDITIONAL DETAILS...
- Two to three and half inches of rain is forecast for the
Olympics Mountains through late Sunday afternoon. With the
Skokomish River running high this amount of precipitation
will likely push the river over flood stage late tonight or
Sunday morning.
- http://www.weather.gov/safety/flood
ESFPQR
It is shaping up to be a wet week ahead. 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.
Current projections of the most likely amounts for storm total
precipitation range from 5 to 8 inches for the Coast, Coast Range,
and Cascades, with 2.5 to 4 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 11 inches
for the Coast, Coast Range, and Cascades, with 5 to 7 inches for
inland valleys. Snowmelt in the Cascades from 2000 to 4000 feet
elevation could add runoff, although the main cause for flooding
would be the heavy rain.
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.
ESFPQR
It is shaping up to be a wet week ahead. 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.
Current projections of the most likely amounts for storm total
precipitation range from 5 to 8 inches for the Coast, Coast Range,
and Cascades, with 2.5 to 4 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 11 inches
for the Coast, Coast Range, and Cascades, with 5 to 7 inches for
inland valleys. Snowmelt in the Cascades from 2000 to 4000 feet
elevation could add runoff, although the main cause for flooding
would be the heavy rain.
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.
Heavy snow in the Cascades at or above 2000 feet Sunday morning
through Monday morning.
* WHAT...Heavy snow expected at or above elevations greater than
2000 ft. Total snow accumulations between 6 and 18 inches.
Heaviest accumulations likely near Stevens Pass with a convergence
zone.
* WHERE...West Slopes North Cascades and Passes, West Slopes North
Central Cascades and Passes, and West Slopes South Central
Cascades and Passes.
* WHEN...From 5 AM Sunday to 10 AM PST Monday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult
to impossible.
* ADDITIONAL DETAILS...The heaviest snowfall will occur Sunday once
snow levels drop below pass level.
* WHAT...Heavy snow expected. Total snow accumulations between 6 and
12 inches possible for the Siskiyou Mountains and the Southern
Oregon Cascades from Lake of the Woods southward. 12 to 18 inches
possible north of Lake of the Woods. Winds could gust as high as
35 mph.
* WHERE...The Southern Oregon Cascades and Siskiyou Mountains. This
includes portions of highways 58, 230, 138, 62, 140, and 66. It
also includes the areas of Willamette Pass, Crater Lake, Diamond
Lake, Union Creek, Lake of the Woods, and Mount Ashland.
* WHEN...From 4 PM Sunday to 10 PM PST Monday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult
to impossible. The hazardous conditions could impact the Monday
morning and evening commutes.
* WHAT...Heavy snow expected. Total snow accumulations between 4 and
12 inches. Winds gusting as high as 40 mph.
* WHERE...Northern and Eastern Klamath County and Western Lake
County County. This includes the cities of Crescent and Chemult,
portions of Highway 97 and Highway 31, and the higher terrain.
* WHEN...From 4 PM Sunday to 10 PM PST Monday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Monday morning and evening commutes.
* WHAT...Heavy snow expected Above 2500 Feet. Total snow
accumulations between 7 and 15 inches.
* WHERE...Eastern Douglas County Foothills County. This includes
Toketee Falls.
* WHEN...From 4 PM Sunday to 10 PM PST Monday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Monday morning and evening
commutes.
* ADDITIONAL DETAILS...Snow levels will be around 6000 feet early
Sunday afternoon then fall rapidly during Sunday evening. Snow
levels will remain around 2500 to 3000 feet in Eastern Douglas
County Sunday evening through Monday evening.
* 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...For the first Coastal Flood Advisory, until 5 PM PST
this afternoon. For the second Coastal Flood Advisory, from 10
AM to 5 PM PST Sunday.
* 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...From 9 AM to 4 PM PST Sunday.
* IMPACTS...Coastal flooding due to tidal overflow is expected
around high tide. This may lead to flooding of parking lots,
parks, and roads, with 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...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 4 AM to 10 AM PST Sunday.
* 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...San Juan County zone.
* WHEN...From 4 AM to 10 AM PST Sunday.
* 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.