* WHAT...Mixed precipitation. Total snow accumulations 1 to 3 inches
and ice accumulations up to a light glaze.
* WHERE...Kittitas Valley and Yakima Valley.
* WHEN...From 10 PM this evening to 4 AM PST Wednesday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow. The hazardous conditions could impact the Tuesday
morning and evening commutes.
* WHAT...Mixed precipitation. Total snow accumulations between 3 and
8 inches, and ice accumulations from a couple hundredths to two
tenths of an inch.
* WHERE...Upper and Lower Slopes of the Eastern Washington Cascades
Crest.
* WHEN...From 10 PM this evening to 4 AM PST Wednesday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow and light freezing rain.
* WHAT...Mixed precipitation. Additional snow accumulations of 3 to
7 inches above 4000 feet, and a trace to 3 inches between 3500 and
4000 feet. Ice accumulations up to a light glaze.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 PM PST Tuesday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
...The National Weather Service in Portland OR has issued a Flood
Watch for the following rivers in Washington...
Grays River at Covered Bridge near Rosburg affecting Wahkiakum
Lowlands zone.
* WHAT...Flooding is possible. There is a 50% chance the Grays River
reaches minor flood stage of 28.5 feet.
* WHERE...Grays River at Covered Bridge near Rosburg.
* WHEN...From Tuesday morning to Wednesday morning.
* 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 1:15 PM PST Monday the stage was 24.1 feet.
- Forecast...Flood stage may be reached based on the latest
forecast information.
- Flood stage is 28.5 feet.
- http://www.weather.gov/safety/flood
* WHAT...Mixed precipitation expected. Total snow accumulations
between 4 and 8 inches and ice accumulations between 0.10 and 0.20
inches.
* WHERE...Stevens Pass, Plain, Leavenworth, Holden Village, and
Stehekin.
* WHEN...From 4 AM Tuesday to 4 AM PST Wednesday.
* IMPACTS...Expect winter travel conditions. Walking surfaces
becoming slick.
* ADDITIONAL DETAILS...Snow will switch over to freezing rain
Tuesday evening.
* WHAT...Mixed precipitation expected. Total snow accumulations 2 to
6 inches and ice accumulations around a light glaze.
* WHERE...Number 2 Canyon, Mansfield, Pangborn Airport, Number 1
Canyon, Entiat, Cashmere, Badger Mountain Road, Chelan,
Waterville, and Wenatchee.
* WHEN...From 4 AM Tuesday to 4 AM PST Wednesday.
* IMPACTS...Expect winter travel conditions for the Tuesday morning
and evening commute.
* WHAT...Snow and freezing rain expected at or above elevations
greater than 2500 ft. Total snow accumulations of 5 to 10 inches.
Ice accumulations of up to 0.10 to 0.20 inches near and east of
the crest. Winds gusting as high as 35 mph.
* WHERE...West Slopes North Cascades and Passes.
* WHEN...From 4 AM Tuesday to 4 AM PST Wednesday.
* IMPACTS...Travel could be very difficult with snow and ice on the
roadway.
* ADDITIONAL DETAILS...Periods of snow are expected Tuesday morning
through Tuesday afternoon. Snow will transition to freezing rain
by Tuesday evening, then to rain early Wednesday morning as snow
levels gradually climb from 2500 to near 8000 feet. Ice
accumulations are most likely across Snoqualmie and Stevens Passes
but cannot be ruled out at White Pass.
* WHAT...Snow and freezing rain expected at or above elevations
greater than 2500 ft. Total snow accumulations of 5 to 10 inches.
Ice accumulations of up to 0.10 to 0.20 inches near and east of
the crest. Winds gusting as high as 35 mph.
* WHERE...West Slopes North Central Cascades and Passes and West
Slopes South Central Cascades and Passes.
* WHEN...From 4 AM Tuesday to 4 AM PST Wednesday.
* IMPACTS...Travel could be very difficult with snow and ice on the
roadway.
* ADDITIONAL DETAILS...Periods of snow are expected Tuesday morning
through Tuesday afternoon. Snow will transition to freezing rain
by Tuesday evening, then to rain early Wednesday morning as snow
levels gradually climb from 2500 to near 8000 feet. Ice
accumulations are most likely across Snoqualmie and Stevens Passes
but cannot be ruled out at White Pass.
* WHAT...South winds 20 to 35 mph with gusts up to 45 mph expected.
* WHERE...Central Coast.
* WHEN...From 4 PM Tuesday to 4 AM PST Wednesday.
* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* ADDITIONAL DETAILS...The strongest winds are expected along the
coast of Grays Harbor County, including the cities of Westport,
Ocean Shores, and Taholah.
* WHAT...Snow expected. Additional snow accumulations up to 1 inch.
* WHERE...Portions of North Idaho and Northeast and Southeast
Washington.
* WHEN...Until 5 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Monday evening commute.
* ADDITIONAL DETAILS...Highest snow amounts will be north of I 90.
Most of the Spokane area will see an inch or less of snow. Snow is
also expected to turn to rain across the Palouse in the afternoon.
* WHAT...South winds 20 to 30 mph with gusts up to 65 mph possible
for beaches and headlands.
* WHERE...South Washington and North and Central Oregon Coast.
* WHEN...From Tuesday afternoon through late Tuesday 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.
* ADDITIONAL DETAILS...There is a 40-60% chance for gusts of 58 mph
or greater for the beaches and headlands. Probabilities for inland
coastal communities are much lower at 10-20%.
* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...Central Coast zone.
* WHEN...Until 4 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.
* ADDITIONAL DETAILS...Highest impacts will occur in the hours
around high tide, which will occur around 1 PM PST on Monday.
* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...Central Coast zone.
* WHEN...From 10 AM this morning to 4 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.
* ADDITIONAL DETAILS...Highest impacts will occur in the hours
around high tide, which will occur around 1 PM PST on Monday.
* 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, Western Whatcom County and Western
Skagit County zones.
* WHEN...Until 10 AM PST this morning.
* 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.
* ADDITIONAL DETAILS...Highest impacts will occur in the hours
around high tide, which will occur around 7 AM PST on Monday.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED THROUGH EARLY
TUESDAY...
.A significant winter system will impact the area providing ample
snowfall that will impact travel across the Cascades, Blues, and the
John Day-Ochoco Highlands through Tuesday.
* WHAT...Snow expected above 4000 feet. Total snow accumulations
between 5 to 10 inches. Winds gusting as high as 35 mph will cause
blowing and drifting of snow.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED THROUGH EARLY
TUESDAY...
.A significant winter system will impact the area providing ample
snowfall that will impact travel across the Cascades, Blues, and the
John Day-Ochoco Highlands through Tuesday.
* WHAT...Snow expected. Total snow accumulations between 4 to 8
inches.
* WHERE...Upper and Lower Slopes of the Eastern Washington Cascades
Crest.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Snow at or above elevations greater than 3000 ft.
Additional snow accumulations between 2 and 4 inches.
* WHERE...West Slopes North Central Cascades and Passes and West
Slopes South Central Cascades and Passes.
* WHEN...Until 1 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions.
ESFSEW
An atmospheric river will impact the region Tuesday and Wednesday,
bringing potentially significant rainfall that could drive some
rivers in western Washington into flood stage.
There is still a fair amount of uncertainty regarding river flooding
mid-week, but the latest rainfall forecast shows 4 to 7 inches over
the Olympic Peninsula with snow levels as high as 7000 to 8000 feet.
Forecast models show large variability in the forecast, with as much
as 8 inches or higher over the Olympics in less than 36 hours. The
northern and central Cascades will also see heavy rainfall during
this period, with up to 5 inches of liquid forecast through
Wednesday.
The Skokomish River is currently forecast to enter moderate flood
stage by Wednesday, and other area rivers will continue to be
monitored. In addition, urban and small stream flooding will need to
be monitored as well due to potential heavier rain rates Tuesday
night into early Wednesday morning.
Forecast models show potential for additional precipitation entering
western Washington towards the end of the week, which could cause
additional river flooding impacts.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
* WHAT...Snow above 3000 feet. Additional snow accumulations 4 to 10
inches.
* WHERE...South Washington Cascades.
* WHEN...Until 10 AM PST Tuesday.
* IMPACTS...Travel could be very difficult to impossible.
