* WHAT...Flooding caused by rain and snowmelt is possible. Flooding
caused by ice jams on rivers with ice buildup is also possible.
* WHERE...Portions of Idaho, including the following counties,
Benewah, Bonner, Boundary, Kootenai, Latah, Lewis, Nez Perce and
Shoshone and Washington, including the following counties, Asotin,
Garfield, Spokane and Whitman.
* WHEN...From this evening through late Monday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas, including
basements and crawlspaces.
* ADDITIONAL DETAILS...
- An atmospheric river will produce periods of moderate
rainfall Saturday night into Monday. Rain, breezy winds, high
temperatures in the upper 40s to low 50s, and overnight
temperatures above freezing will contribute to rapid lowland
snowmelt.
- http://www.weather.gov/safety/flood
* WHAT...Southeast winds 20 to 30 mph with gusts up to 45 mph
expected.
* WHERE...Admiralty Inlet Area, San Juan County, Western Skagit
County, and Western Whatcom County.
* WHEN...From 10 AM this morning to 7 PM PST this evening.
* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...South winds 15 to 25 mph with gusts up to 45 mph expected.
* WHERE...Central Coast and North Coast.
* WHEN...From 10 AM this morning to 7 PM PST this evening.
* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...Southwest winds 35 to 45 mph with gusts up to 60 mph
possible.
* WHERE...Portions of Lake, Klamath, and Modoc counties, including
Summer Lake, Wagontire, Valley Falls, Paisley, the Warner and Hart
Mountains, Winter Rim, and portions of Highways 395, 140, and 31.
* WHEN...From Monday morning through late Monday night.
* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.
* WHAT...South winds 35 to 45 mph with gusts up to 65 mph possible.
* WHERE...The Curry, Coos, and Douglas county coasts, including
Brookings, Gold Beach, Port Orford, Bandon, North Bend, Coos Bay,
Reedsport, all capes and headlands, and exposed portions of
Highway 101.
* WHEN...From Monday morning through Monday evening.
* IMPACTS...Damaging winds could blow down trees and power lines,
and damage unsecured property. Power outages are possible. Travel
could be difficult, especially for high profile vehicles.
...Forecast flooding changed from Minor to Moderate severity for the
following rivers in Washington...
Skokomish River At Potlatch affecting Mason County.
.Heavy rain over the south slopes of the Olympics through the
weekend, with amounts of 4 to 6 inches predicted. Snow levels will
rise to near 7000 feet. This combination will drive the Skokomish
River above flood stage Saturday.
* WHAT...Moderate flooding is forecast.
* WHERE...Skokomish River at Potlatch.
* WHEN...From Saturday evening until further notice.
* IMPACTS...At 17.5 feet, the Skokomish River will cause moderate
flooding, with deep and quick flood waters inundating some
residential areas, many roads, and much of the farm land in the
Skokomish Valley. Inundated roads include the Skokomish Valley
road, Bourgault Road West, Purdy Cutoff Road, and Highway 106.
* ADDITIONAL DETAILS...
- At 9:30 PM PST Friday the stage was 14.9 feet.
- Flood stage is 16.5 feet.
- Forecast...The river is expected to rise above flood stage
tomorrow evening and continue rising to 17.7 feet early
Sunday morning. Additional rises are possible thereafter.
- Flood History...This crest compares to a previous crest of
17.6 feet on 10/20/2003.
- http://www.weather.gov/safety/flood
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, Palouse River at Potlatch, 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.
...The National Weather Service in Spokane WA has issued a Flood
Watch for the following rivers in Idaho...Washington...
Paradise Creek at Moscow affecting Latah and Whitman Counties.
.Periods of moderate to at times heavy rain will fall Saturday night
through Sunday night. Rain will come in two waves with the first
arriving Saturday night into early Sunday and the second arriving
Sunday night. Mild temperatures will also result in the melt off of
snow at lower elevations. The combination of rain with melting snow
is expected to result in rapid rises on Paradise Creek late Saturday
with flooding possible along the creek through at least Monday
before water recedes.
For the Paradise Creek ...including Moscow...flooding is possible.
* WHAT...Flooding is possible.
* WHERE...Paradise Creek at Moscow.
* WHEN...From late Saturday night to Tuesday morning.
* IMPACTS...At 9.2 feet, Water will be out of the creek at the
intersection of Bridge Street and Hillcrest Drive and may also be
flowing into the intersection at this stage. Flooding near Damen
Street.
At 10.0 feet, Water will be up to the homes near the intersection
of Bridge and Hillcrest. Intersection at 5th and Roosevelt will be
flooded. Storm drains along Main Street will be backed up and
overflowing. Mountainview Park will be flooded. Bike path along
the creek near the University will be under 6 inches of water.
* ADDITIONAL DETAILS...
- At 5:45 PM PST Friday the stage was 4.9 feet.
- Forecast...Flood stage may be reached early Sunday morning.
- Flood stage is 9.2 feet.
- http://www.weather.gov/safety/flood
AVWSEW
The following message is transmitted at the request of the
Northwest Avalanche Center.
...The Northwest Avalanche Center in Seattle has issued an Avalanche
Warning...
* WHAT...Very dangerous conditions are expected to develop
throughout the day as heavy wet snow and rain overload a dry and
weak snowpack. Very large natural avalanches will occur and may
descend into lower elevation forested areas. High avalanche danger
is likely to spread into other regions Saturday night into Sunday.
* WHERE...The Olympic Mountains and the west slopes of the Cascades
from the Canadian border to King County, including the Mt Baker
area, Hwy 542, Hwy 20 West, and the Mountain Loop Hwy.
* WHEN...In effect from Fri 18:00 PST to Sat 18:00 PST. Very
dangerous avalanche conditions are expected to continue and spread
throughout the Cascades.
* IMPACTS...Very large natural avalanches are expected. These will
be more than enough to bury, injure, or kill backcountry travelers.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Avoid all areas where
avalanches can start, run, or stop. This includes openings in the
forest well below large steep alpine slopes.
Consult https://www.nwac.us/ or www.avalanche.org for more detailed
information.
Similar avalanche danger may exist at locations outside the coverage
area of this or any avalanche center.
ESFPDT
Synopsis: Rain and high mountain snow from 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 5 inches are expected
in the Cascades and 1 to 3 inches in the eastern Oregon mountains.
In addition, temperatures will be rising to the 40s and lower 50s in
the mountains which will lead to snow melt adding even more water to
area rivers and streams. The National Water Model is highlighting
high water on numerous smaller streams and creeks, but streamflow
amounts are generally only slightly higher than high water
thresholds.
What: Precipitation fed by an atmospheric river and snow melt due to
warmer temperatures this weekend into early next week will lead to
rises on area creeks, streams and rivers. Rivers are low enough so
that most rivers will remain below bankfull. However, the Walla
Walla River at Touchet and the Naches River at Cliffdell are
expected to exceed bankfull late Sunday night before receding Monday
and Tuesday. Another concern will be rapid rises on smaller streams
and creeks due to heavier downpours and snowmelt. This could lead to
debris flows on recent burn scars and over steep terrain.
The Walla Walla River at Touchet has a 44 percent chance of
exceeding bankfull but less than a 5 percent chance of reaching
minor flood stage. It is expected to reach bankfull late Sunday
evening and remain there through Tuesday morning.
The Naches River at Cliffdell has a 29 percent chance of exceeding
bankfull but less than a 5 percent chance of reaching minor flood
stage. It is expected to reach bankfull late Sunday evening and
remain there until dropping below bankfull Monday afternoon.
The Klickitat River at Pitt is forecast remain below bankfull, but
model probabilities give it a 13 percent chance of rising above
bankfull and a 9 percent chance of reaching minor flood stage. All
other river forecast points have a less than a 10 percent chance of
exceeding bankfull.
When: Rain will begin tonight and continue through Monday with the
heaviest rain expected Saturday night and Sunday.
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.
This Hydrologic Outlook will be updated as needed due to changing
conditions.
ESFPDT
Synopsis: Rain and high mountain snow from 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 5 inches are expected
in the Cascades and 1 to 3 inches in the eastern Oregon mountains.
In addition, temperatures will be rising to the 40s and lower 50s in
the mountains which will lead to snow melt adding even more water to
area rivers and streams. The National Water Model is highlighting
high water on numerous smaller streams and creeks, but streamflow
amounts are generally only slightly higher than high water
thresholds.
What: Precipitation fed by an atmospheric river and snow melt due to
warmer temperatures this weekend into early next week will lead to
rises on area creeks, streams and rivers. Rivers are low enough so
that most rivers will remain below bankfull. However, the Walla
Walla River at Touchet and the Naches River at Cliffdell are
expected to exceed bankfull late Sunday night before receding Monday
and Tuesday. Another concern will be rapid rises on smaller streams
and creeks due to heavier downpours and snowmelt. This could lead to
debris flows on recent burn scars and over steep terrain.
The Walla Walla River at Touchet has a 44 percent chance of
exceeding bankfull but less than a 5 percent chance of reaching
minor flood stage. It is expected to reach bankfull late Sunday
evening and remain there through Tuesday morning.
The Naches River at Cliffdell has a 29 percent chance of exceeding
bankfull but less than a 5 percent chance of reaching minor flood
stage. It is expected to reach bankfull late Sunday evening and
remain there until dropping below bankfull Monday afternoon.
The Klickitat River at Pitt is forecast remain below bankfull, but
model probabilities give it a 13 percent chance of rising above
bankfull and a 9 percent chance of reaching minor flood stage. All
other river forecast points have a less than a 10 percent chance of
exceeding bankfull.
When: Rain will begin tonight and continue through Monday with the
heaviest rain expected Saturday night and Sunday.
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.
This Hydrologic Outlook will be updated as needed due to changing
conditions.
* WHAT...South winds 15 to 25 mph with gusts up to 45 mph expected.
* WHERE...Central Coast and North Coast.
* WHEN...From 10 AM to 7 PM PST Saturday.
* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...Visibility of one-quarter mile or less in freezing fog.
* WHERE...Foothills of the Blue Mountains of Washington.
* WHEN...Until 3 PM PST this afternoon.
* IMPACTS...Low visibility could make driving conditions hazardous.
ESFSEW
A series of storms will begin to impact western Washington on Friday
and continue through Tuesday. The next storm on Saturday will have
heavy rain at times as will a third storm right on its heels Sunday.
Precipitation amounts could be 3 to 5 inches storm total with
locally heavier amounts, and snow levels rising above 7000 feet.
With moderate temperatures now and warmer temperatures to come, this
will also result in some snow melt at low to mid elevations. These
factors will combine to result in a potential for river flooding.
The most likely areas for river flooding will be for rivers flowing
off of the Cascades and Olympics. Urban and small stream nuisance
flooding and rainfall-induced shallow landslides will also be
possible.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
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.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Portions of northwest and west central Washington,
including the following counties, in northwest Washington, Grays
Harbor and Skagit. In west central Washington, King, Lewis,
Pierce, Snohomish and Thurston.
* WHEN...From Sunday morning through late Tuesday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas. Area creeks
and streams are running high and could flood with more heavy rain.
Landslide risk will also increase through this period.
* ADDITIONAL DETAILS...
- A series of storms via an atmospheric river will produce
periods of rain, heavy at times, over western Washington from
Friday into Tuesday. The heaviest of the rain will be
concentrated over the Olympics and Cascades, where rain
totals through this period will range from 3 to 5 inches,
with locally higher amounts possible. Snow levels will
increase to above 7,000 feet Saturday evening. These
conditions could result in flooding in a number of rivers.
- http://www.weather.gov/safety/flood
...The National Weather Service in Seattle WA has issued a Flood
Warning for the following rivers in Washington...
Skokomish River At Potlatch affecting Mason County.
.Heavy rain over the south slopes of the Olympics through the
weekend, with amounts of 4 to 6 inches predicted. Snow levels will
rise to near 7000 feet. This combination will drive the Skokomish
River above flood stage Saturday.
* WHAT...Moderate flooding is forecast.
* WHERE...Skokomish River at Potlatch.
* WHEN...From Saturday evening until further notice.
* IMPACTS...At 16.5 feet, the Skokomish River will cause widespread
flooding of pasture lands, with water flowing quickly over West
Bourgault Road and Skokomish Valley Road.
* ADDITIONAL DETAILS...
- At 9:30 AM PST Friday the stage was 15.0 feet.
- Flood stage is 16.5 feet.
- Forecast...The river is expected to rise above flood stage
Saturday evening. The river will crest around 17.8 feet late
this weekend, and remain above flood stage well into next
week.
- http://www.weather.gov/safety/flood
* WHAT...Visibility of one-quarter mile or less in freezing fog.
* WHERE...Lower Columbia Basin of Washington and Foothills of the
Blue Mountains of Washington.
* WHEN...Until 11 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
Dense freezing fog with visibilities of a half mile or less has
developed along US 12 and is spreading through the Walla Walla
valley this morning. The dense fog is expected to persist through
this morning, with impacts expected to the morning commute.
Dense freezing fog with visibilities of a half mile or less will
continue to impact portions of the Yakima valley through this
morning. The densest fog has been observed along I-82 between
Parker and Grandview, and is expected to bring impacts to the
morning commute.