ESFSEW
Additional frontal systems will bring precipitation to Western
Washington at times through the weekend. While precipitation will be
much less with the systems beginning Friday, the lack of much of a
break will keep rivers over the Southwest Interior rising into the
weekend. The potential for the lower reaches of the Chehalis River
to flood on Saturday continues to be monitored.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
...The Flood Warning is extended for the following rivers in
Washington...
Grays River at Covered Bridge near Rosburg affecting Wahkiakum
County.
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Grays River at Covered Bridge near Rosburg.
* WHEN...Until late this evening.
* IMPACTS...Above 28.5 feet, expect some flooding of roads along and
near the Grays River, especially downstream of the gage, including
roadway approaches to the Altoona Bridge over the Grays, and
portions of Covered Bridge Road, Barr-Durrah Road, and Loop Road
near Rosburg and Hwy 4.
* ADDITIONAL DETAILS...
- At 2:15 PM PST Thursday the stage was 28.7 feet.
- Bankfull stage is 27.5 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 2:15 PM PST Thursday was 28.8 feet.
- Forecast...The river will gradually fall below flood stage
this evening.
- Flood stage is 28.5 feet.
- http://www.weather.gov/safety/flood
ESFSEW
Additional frontal systems will bring precipitation to Western
Washington at times through the weekend. While precipitation will be
much less with the systems beginning Friday, the lack of much of a
break will keep rivers over the Southwest Interior rising into the
weekend. The potential for the lower reaches of the Chehalis River
to flood on Saturday continues to be monitored.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
* WHAT...Snow expected above 3500 feet. Total snow accumulations
between 8 and 14 inches. 2 to 6 inches between 3000 and 4000 feet
with the highest snow accumulations above pass level.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...From 1 AM Friday to 4 PM PST Saturday.
* IMPACTS...Significant snowfall with periods of heavy snowfall
rates will combine with low visibility to create very difficult
driving conditions.
* WHAT...Wet snow expected above 4500 feet. Total snow accumulations
6 to 12 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 1 AM Friday to 4 AM PST Saturday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
* WHAT...For the Winter Storm Warning at or above elevations greater
than 3500 ft, heavy snow. Additional snow accumulations up to 4
inches. For the Winter Weather Advisory at or above elevations
greater than 3500 ft, snow expected. Total snow accumulations
between 6 and 22 inches. Heaviest snow above 5000 feet.
* WHERE...West Slopes North Central Cascades and Passes and West
Slopes South Central Cascades and Passes.
* WHEN...For the Winter Storm Warning, until 4 PM PST this
afternoon. For the Winter Weather Advisory, from 1 AM Friday to 4
PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. Gusty
winds could bring down tree branches.
* ADDITIONAL DETAILS...Snowfall amounts tonight through Saturday for
Snoqualmie Pass ranging 2 to 6 inches.
* WHAT...For the Winter Storm Warning at or above elevations greater
than 3500 ft, heavy snow. Additional snow accumulations of up to 5
inches. For the Winter Weather Advisory at or above elevations
greater than 3500 ft, snow expected. Total snow accumulations
between 6 and 18 inches.
* WHERE...West Slopes North Cascades and Passes.
* WHEN...For the Winter Storm Warning, until 4 PM PST this
afternoon. For the Winter Weather Advisory, from 4 PM Friday to 4
PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. Gusty
winds could bring down tree branches.
* WHAT...For the Winter Storm Warning at or above elevations greater
than 3500 ft, heavy snow. Additional snow accumulations up to 4
inches. For the Winter Weather Advisory at or above elevations
greater than 3500 ft, snow expected. Total snow accumulations
between 6 and 22 inches. Heaviest snow above 5000 feet.
* WHERE...West Slopes North Central Cascades and Passes and West
Slopes South Central Cascades and Passes.
* WHEN...For the Winter Storm Warning, until 4 PM PST this
afternoon. For the Winter Weather Advisory, from 1 AM Friday to 4
PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. Gusty
winds could bring down tree branches.
* ADDITIONAL DETAILS...Snowfall amounts tonight through Saturday for
Snoqualmie Pass ranging 2 to 6 inches.
* WHAT...For the Winter Storm Warning at or above elevations greater
than 3500 ft, heavy snow. Additional snow accumulations of up to 5
inches. For the Winter Weather Advisory at or above elevations
greater than 3500 ft, snow expected. Total snow accumulations
between 6 and 18 inches.
* WHERE...West Slopes North Cascades and Passes.
* WHEN...For the Winter Storm Warning, until 4 PM PST this
afternoon. For the Winter Weather Advisory, from 4 PM Friday to 4
PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. Gusty
winds could bring down tree branches.
* WHAT...Snow expected above 4000 feet. From 4000 feet to 5000 feet,
total snow accumulations appear most likely to range between 3 and
12 inches, with the lowest amounts near 4000 feet. Above 5000-5500
feet, total snow accumulations of 12 to 18 inches.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...Until 7 PM PST Friday.
* IMPACTS...Travel could be difficult at times. Be prepared for snow
covered roads and slick surfaces.
* ADDITIONAL DETAILS...An active storm track will continue to
produce accumulating snow across the passes in the Cascades into
this weekend. However, there are two time periods when snow levels
appear likely to rise to 5000-5500 feet and be far enough above
the passes to temporarily limit snow accumulations. The first
window where snow levels will rise above the passes appears most
likely to occur between 3 AM Friday and 9 AM Friday. Another round
of warmer air aloft will most likely push snow levels above the
passes Friday night as well.
* WHAT...Heavy snow. Additional snow accumulations between 2 and 8
inches. Winds gusting as high as 50 mph mainly on the ridgetops.
* WHERE...Holden Village, Stevens Pass, and Stehekin.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Travel could be very difficult leading up to and over
Stevens Pass. Heavy snow could lead to isolated tree damage and
power outages. Areas of blowing snow could significantly reduce
visibility where westerly winds align with the terrain.
* WHAT...Large waves and hazardous surf conditions. Breakers up to
25 to 30 feet.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Until 4 PM PST Friday.
* IMPACTS...Destructive waves may wash over beaches, jetties,
and other structures unexpectedly. People can be swept off
rocks and jetties and drown while observing high surf. Minor
beach erosion may damage coastal properties and buildings.
Higher than normal water run-up is expected on beaches and low-
lying shoreline.
* ADDITIONAL DETAILS...Sneaker waves may be possible at times.
* WHAT...Large breaking waves of 17 to 22 feet in the surf zone.
* WHERE...North Coast zone.
* WHEN...Until 10 AM PST Friday.
* IMPACTS...Large waves may wash over beaches, jetties, and other
structures unexpectedly. Localized beach erosion is possible.
People can be swept off rocks and jetties, and drown while
observing high surf.
* WHAT...Large breaking waves of 17 to 22 feet in the surf zone.
* WHERE...North Coast zone.
* WHEN...Until 10 AM PST Friday.
* IMPACTS...Large waves may wash over beaches, jetties, and
other structures unexpectedly. Localized beach erosion is
possible. People can be swept off rocks and jetties, and drown
while observing high surf.
* ADDITIONAL DETAILS...The threat for coastal flooding has
decreased this morning as the high tide as passed, so the
coastal flood advisory has been cancelled. High surf conditions
will continue through Friday morning.
* WHAT...Large breaking waves of 17 to 22 feet in the surf zone.
* WHERE...Central Coast zone.
* WHEN...Until 10 AM PST Friday.
* IMPACTS...Large waves may wash over beaches, jetties, and
other structures unexpectedly. Localized beach erosion is
possible. People can be swept off rocks and jetties, and drown
while observing high surf.
* ADDITIONAL DETAILS...The threat for coastal flooding has
decreased this morning as the high tide as passed, so the
coastal flood warning has been cancelled. High surf conditions
will continue through Friday morning.
* WHAT...Minor coastal flooding. Inundation of around 2.0 to 2.2
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 2 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...Southwest winds 15 to 30 mph with gusts 40 to 55 mph.
* WHERE...Colfax, Moscow, Airway Heights, Grand Coulee, Spokane
Valley, Genesee, Post Falls, Potlatch, Fairfield, Odessa, Fourth
Of July Pass, Oakesdale, Fernwood, La Crosse, Coulee City, Cheney,
St. Maries, Coeur d'Alene, Ritzville, Pullman, Creston, Plummer,
Uniontown, Lookout Pass, Downtown Spokane, Osburn, Mullan, Worley,
Dobson Pass, Pinehurst, Wilbur, Hayden, Davenport, Wallace,
Rockford, Rosalia, Kellogg, Tekoa, and Harrington.
* WHEN...Until 5 PM PST this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Some
tree damage is possible along with a few power outages.
* ADDITIONAL DETAILS...Peak wind gusts are expected Thursday morning
and early afternoon then slowly decreasing Thursday near sunset.
* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph. Wind
gusts near 30 mph in Clarkston.
* WHERE...Clarkston, Pomeroy, and Alpowa Summit.
* WHEN...Until 5 PM PST this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
...The National Weather Service in Portland OR has issued a Flood
Warning for the following rivers in Washington...
Grays River at Covered Bridge near Rosburg affecting Wahkiakum
County.
* WHAT...Minor flooding is occurring.
* WHERE...Grays River at Covered Bridge near Rosburg.
* WHEN...From this morning to late this afternoon.
* IMPACTS...Above 28.5 feet, expect some flooding of roads along and
near the Grays River, especially downstream of the gage, including
roadway approaches to the Altoona Bridge over the Grays, and
portions of Covered Bridge Road, Barr-Durrah Road, and Loop Road
near Rosburg and Hwy 4.
* ADDITIONAL DETAILS...
- At 9:15 AM PST Thursday the stage was 28.6 feet.
- Bankfull stage is 27.5 feet.
- Forecast...The river will crest around 28.8 feet late this
morning. It will fall below flood stage early this afternoon
and continue to drop through the rest of the day.
- Flood stage is 28.5 feet.
- http://www.weather.gov/safety/flood
* WHAT...Heavy snow above 3500 feet. Additional snow accumulations
up to 6 inches. Winds gusting as high as 45 mph.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be difficult due
to periods of moderate to heavy snow. Gusty winds could bring down
tree branches.
