* WHAT...Visibility as low as one-quarter mile in freezing fog.
* WHERE...Yakima Valley.
* WHEN...Until 1 PM PST this afternoon.
* IMPACTS...Low visibility could make driving conditions hazardous.
ESFOTX
Where: Spokane, Whitman, Asotin, and Garfield Counties in
Washington. Kootenai, Shoshone, Benewah, Latah, Nez Perce, and Lewis
Counties in Idaho.
What: An atmospheric river will deliver warm, rainy, and breezy
weather to the region this weekend into early next week. High
temperatures Sunday and Monday will warm into the upper 40s to low
50s. Additionally, rainfall amounts of 0.60 to 1.25 inches in the
lowlands and 1 to 2 inches in the mountains are currently
forecasted. Rapid lowland snowmelt will lead to rises on area
creeks, streams, and rivers.
Paradise Creek in Moscow is currently forecasted to reach Minor
Flood Stage Sunday morning. Hangman Creek in Spokane, Little Spokane
River at Dartford, and South Fork Palouse River at Pullman are
forecasted to rise to near bankfull conditions on Sunday. Minor
field flooding and ponding of water in areas of poor or clogged
drainage will also be a concern.
When: Beginning Saturday evening and continuing through Monday.
Heaviest rainfall will occur in two rounds: Saturday night into
Sunday morning and Sunday afternoon into early Monday.
Monitor the latest weather and river forecasts from the National
Weather Service at weather.gov/Spokane or water.noaa.gov/wfo/otx.
ESFOTX
Where: Spokane, Whitman, Asotin, and Garfield Counties in
Washington. Kootenai, Shoshone, Benewah, Latah, Nez Perce, and Lewis
Counties in Idaho.
What: An atmospheric river will deliver warm, rainy, and breezy
weather to the region this weekend into early next week. High
temperatures Sunday and Monday will warm into the upper 40s to low
50s. Additionally, rainfall amounts of 0.60 to 1.25 inches in the
lowlands and 1 to 2 inches in the mountains are currently
forecasted. Rapid lowland snowmelt will lead to rises on area
creeks, streams, and rivers.
Paradise Creek in Moscow is currently forecasted to reach Minor
Flood Stage by Saturday afternoon. Hangman Creek in Spokane, Little
Spokane River at Dartford, and South Fork Palouse River at Pullman
are forecasted to rise to near bankfull conditions on Sunday. Minor
field flooding and ponding of water in areas of poor or clogged
drainage will also be a concern.
When: Beginning Saturday evening and continuing through Monday.
Heaviest rainfall will occur in two rounds: Saturday night into
Sunday morning and Sunday afternoon into early Monday.
Monitor the latest weather and river forecasts from the National
Weather Service at weather.gov/Spokane or water.noaa.gov/wfo/otx.
* WHAT...Snow. Additional snow accumulations up to 3 inches. Winds
gusting as high as 35 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions.
ESFPDT
Synopsis: Rain and high mountain snow in the last 24 hours and
multiple systems this weekend and early next week will lead to
rising water levels on area streams and rivers. Rainfall amounts of
2 to 4 inches are expected in the Cascades and 1 to 2 inches in the
eastern Oregon mountains. In addition, temperatures will be rising
to the 40s and even lower 50s in the mountains which will lead to
snow melt adding even more water to rivers and streams. At this
point, the Naches River at Cliffdell is expected to barely reach
action stage for several hours early Monday before receding. Other
rivers in the Cascades and eastern Oregon mountains are forecast to
approach but stay below action stage. Rises will also be possible on
smaller streams and creeks.
Where: The Upper and Lower East Slopes of the Washington and Oregon
Cascades, The Simcoe Highlands, The Northern and Southern Blue
Mountains, The Blue Mountain Foothills of Washington and Oregon,
Wallowa County and the Grande Ronde Valley.
When: Rain will be ending tonight though more systems will bring
rain Friday night through Monday.
What: The precipitation and snow melt will lead to rises on area
creeks, streams and rivers. Rivers are low enough that only the
Naches River at Cliffdell is expected to exceed bankfull early
Monday for a few hours and only by a few inches. However, with the
heavier periods of rain and snow melt, rapid rises will be possible
on smaller streams and creeks as well. The Morrow County Sheriff's
Office reported earlier today that the Upper Hinton Creek near
Heppner is out of its banks in a few places though any flooding is
minor and not a problem at this point. However, further rises on
streams and creeks will be a concern through the weekend into early
next week.
This Hydrologic Outlook will be updated as needed due to changing
conditions.
* WHAT...Snow at or above elevations greater than 3000 ft.
Additional snow accumulations up to 4 inches.
* WHERE...West Slopes North Central Cascades and Passes.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Snow at or above elevations greater than 3500 ft.
Additional snow accumulations up to 4 inches.
* WHERE...West Slopes South Central Cascades and Passes.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Plan on slippery road conditions.
Rainfall over the last 24 hours combined with snowmelt has resulted
in a rapid rise on the Skokomish river. The river is expected to
approach minor flood stage later tonight.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...Through Thursday morning.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
...CONTINUED SNOW OVER THE CASCADES...
.Showery conditions remain behind a frontal band that has produced
widespread snow over the Cascades today. Snow will begin to lighten
with areas of rain through the day as the main front shifts
eastward, then transition back to snow overnight.
* WHAT...Snow Above 3500 feet. Additional snow accumulations up to 3
inches.
* WHERE...South Washington Cascades.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...Snow will be showery so accumulation amounts
will vary based on location and elevation. For elevations between
4000 to 5000 feet, rain may be the dominate precipitation type and
thus accumulation will be less. As temperatures cool overnight,
rain will transition back to snow.
* WHAT...Snow. Additional snow accumulations up to 5 inches.
* WHERE...Stevens Pass and Holden Village.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Travel could be difficult. Expect winter driving
conditions.
* WHAT...Snow above 3500 feet. Additional snow accumulations up to 7
inches. Winds gusting as high as 35 mph.
* WHERE...Upper and Lower Slopes of the Eastern Washington Cascades
Crest.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Snow expected. Additional snow accumulations between 5 to
10 inches. Winds gusting as high as 40 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Periods of moderate and heavy
snow will combine with low visibilities to create difficult
driving conditions.
* WHAT...Snow. Additional snow accumulations between 4 and 8 inches.
* WHERE...Holden Village and Stevens Pass.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Travel could be difficult. Expect winter driving
conditions.
* WHAT...Snow. Additional snow accumulations between 1 and 3 inches.
* WHERE...Entiat, Chelan, Mazama, Winthrop, Number 1 Canyon,
Conconully, Waterville, Cashmere, Badger Mountain Road, Mansfield,
Leavenworth, Loup Loup Pass, Wenatchee, Number 2 Canyon, Pangborn
Airport, Methow, Plain, and Twisp.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Total snow accumulations up to an inch along
the Columbia River.
* WHAT...Snow. Additional snow accumulations up to 2 inches north of
I-90.
* WHERE...Creston, Coulee City, Moses Lake, Wilbur, Ephrata, Odessa,
Harrington, Grand Coulee, and Quincy.
* WHEN...Until 1 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Snow expected. Additional snow accumulations between 5 to
10 inches. Winds gusting as high as 40 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Periods of moderate and heavy
snow will combine with low visibilities to create difficult
driving conditions.
* WHAT...Snow above 3500 feet. Additional snow accumulations up to 7
inches. Winds gusting as high as 35 mph.
* WHERE...Upper and Lower Slopes of the Eastern Washington Cascades
Crest.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Mixed precipitation. Additional snow accumulations up to
one inch and ice accumulations around a light glaze.
* WHERE...In Oregon, Foothills of the Southern Blue Mountains of
Oregon and North Central Oregon. In Washington, Simcoe Highlands.
* WHEN...Until noon PST today.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Mixed precipitation. Additional snow accumulations up to
one inch and ice accumulations around a light glaze.
* WHERE...Lower Columbia Basin of Oregon and Washington, Foothills
of the Northern Blue Mountains of Oregon, Yakima Valley, and
Foothills of the Blue Mountains of Washington.
* WHEN...Until noon PST today.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Wet snow. Additional snow accumulations up to two inches.
* WHERE...Kittitas Valley.
* WHEN...Until noon PST today.
* IMPACTS...Even light snowfall amounts can accumulate on roads and
cause dangerous driving conditions due to slippery and
snow-covered roads. The hazardous conditions could impact the
Wednesday morning commute.
