...LIGHT FREEZING RAIN, MOUNTAIN SNOW EXPECTED THIS WEEKEND...
.A system moving across our region will bring areas of rain and some
light freezing rain to portions of the lower slopes of the eastern
Washington Cascades as well as the Kittitas Valley on Saturday. Then
on Sunday, areas of moderate snowfall will begin to fall across the
Washington Cascades as well as the northern Blue Mountains of both
Washington and Oregon.
* WHAT...Freezing rain expected. Total ice accumulations around a
light glaze.
* WHERE...Kittitas Valley and Lower Slopes of the Eastern Washington
Cascades Crest.
* WHEN...From 4 AM to 4 PM PST Saturday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
A weather system moving into the region will bring a wintry mix of
freezing rain, sleet, rain and snow.
* WHAT...Mixed precipitation expected. Total ice accumulations
around one tenth of an inch and snow accumulations up to 6 inches
above 3500 feet. Localized ice accumulations of a quarter of an
inch is possible, especially in Pend Oreille county.
* WHERE...Flowery Trail Road, Kettle Falls, Springdale-Hunters Road,
Athol, Priest River, Orin-Rice Road, Metaline, Bonners Ferry,
Newport, Tiger, Ione, Eastport, Schweitzer Mountain Road,
Chewelah, Clark Fork, Northport, Deer Park, Sandpoint, Fruitland,
Colville, and Metaline Falls.
* WHEN...From 4 AM to 10 PM PST Saturday.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Additional light snow is expected in the
mountains through Sunday morning.
A weather system moving into the region will bring a wintry mix of
freezing rain, sleet, rain and snow.
* WHAT...Mixed precipitation expected. Total ice accumulations of a
tenth of an inch or less and little to no snow accumulation. Some
localized ice amounts of up to two tenths of an inch is possible
from west of Spokane towards Sprague and Creston.
* WHERE...Portions of Central, East Central, North Central, and
Northeast Washington.
* WHEN...From 4 AM to 7 PM PST Saturday.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Temperatures will slowly warm above freezing
after 10am, but there will continue to be cold pockets where
freezing rain will continue through the afternoon.
A weather system moving into the region will bring a wintry mix of
freezing rain, sleet, rain and snow.
* WHAT...Mixed precipitation expected. Total ice accumulations
around a tenth of an inch and snow accumulations up to 3 inches in
the mountains. Precipitation will start out as freezing rain or
sleet and then transition to rain in the valleys through the day
and to snow in the mountains. There could be localized ice
accumulations up to two tenths of an inch.
* WHERE...Mazama, Twisp, Stevens Pass, Methow, Holden Village, Loup
Loup Pass, Plain, Stehekin, Conconully, Leavenworth, and Winthrop.
* WHEN...From 1 AM to 7 PM PST Saturday.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Mountain snow will continue Saturday night
with additional light to moderate accumulations forecast.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...From Saturday afternoon through Sunday evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- A stronger storm system will bring 2 to 3 inches of rain,
possibly more to the Olympic mountains Friday night into
Sunday morning. With snow levels above 7000 feet for the bulk
of the precipitation, most of that will be rain and that
could be enough to drive the Skokomish River above flood
stage. The current river forecast has it cresting just below
flood stage.
- http://www.weather.gov/safety/flood
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
ESFSEW
A stronger storm system will move though the area over much of the
weekend that could produce enough rainfall to drive the Skokomish
River above flood stage. There is still a fair amount of uncertainty
regarding flooding since the precipitation forecasts have been quite
variable. On the low end, it would not produce a flood, but on the
high end minor flooding would be likely. Snow levels will remain
quite high during the bulk of the heavy precipitation, ranging
between 7000 and 9000 feet.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
ESFSEW
A stronger storm system will bring heavier rainfall to the northern
and central portions of the Cascades in Washington this weekend.
While uncertainty with respect to flood potential at individual
river points remains high, confidence in heavier rainfall setting up
across the mountains of Whatcom, Skagit, and Snohomish counties has
increased. If the middle to high end forecast rainfall amounts
occur, minor flooding is possible on rivers draining from the
Cascades in these areas. Snow levels will remain quite high during
the bulk of the heavy precipitation, ranging between 7000 and 9000
feet.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast
Portland Metro, West Central Willamette Valley, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Visibility one quarter to one half mile in areas of dense
fog.
* WHERE...Admiralty Inlet Area, Hood Canal Area, Western Skagit
County, Western Whatcom County, and Bremerton and Vicinity.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Areas of low visibility could make driving conditions
hazardous.
