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 expected. Total snow accumulations 8 to 16 inches with
up to 20 inches near Crater Lake. Winds gusting as high as 40 mph
over exposed terrain.
* WHERE...The southern Oregon Cascades north of Lake of the Woods,
including Crater Lake National Park and the Cascade passes along
Highways 62, 138, 230, and 58.
* WHEN...Until 4 AM PST Tuesday.
* IMPACTS...Travel could be difficult with slippery, snow covered
roads and reduced visibility. The hazardous conditions could
impact the Monday morning and evening commutes.
* ADDITIONAL DETAILS...Snow may taper off this afternoon, but pick
up again later tonight.
* WHAT...Snow expected. Total snow accumulations 3 to 8 inches,
except up to 12 inches over remote terrain. Winds gusting as high
as 45 mph over high exposed areas.
* WHERE...Northern and Eastern Klamath County and Western Lake
County County, including Highway 97 north of Chiloquin to Chemult
and Crescent as well as most of Winter Rim.
* WHEN...Until 4 AM PST Tuesday.
* IMPACTS...Travel could be difficult with slippery, snow covered
roads and reduced visibility. The hazardous conditions could
impact the Monday morning and evening commutes.
* ADDITIONAL DETAILS...Snow may taper off this afternoon, but pick
up again later tonight.
* WHAT...Southeast winds 20 to 30 mph with gusts up to 45 mph
expected.
* WHERE...The southern Rogue/Bear Creek Valley in Jackson County,
including Ashland, Talent, Phoenix, and portions of Interstate 5.
* WHEN...Until 1 PM PST this afternoon.
* IMPACTS...Gusty winds may blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...South winds 25 to 35 mph with gusts up to 55 mph expected.
* WHERE...Portions of Lake, Modoc, and eastern Klamath Counties,
including Valley Falls, Paisley, Summer Lake, portions of Highways
31 and 395, and the higher terrain of the Warners, Winter Rim, and
Hart mountains.
* WHEN...Until 1 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.
* 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.
* WHAT...Heavy snow above 4000 feet. Additional snow accumulations
of 8 to 16 inches.
* WHERE...Northern and Central Oregon Cascades.
* WHEN...Until 10 AM PST Tuesday.
* IMPACTS...Travel could be very difficult to impossible.
* ADDITIONAL DETAILS...Heaviest snow is expected tonight into early
Tuesday morning.
* WHAT...Snow expected. Total snow accumulations of 1 to 2 inches.
* WHERE...Portions of North Idaho and Northeast and Southeast
Washington.
* WHEN...From 7 AM this morning to 5 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Monday morning and evening commutes.
* 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...Snow expected. Total snow accumulations of 1 to 2 inches.
The mountains will see 2 to 4 inches.
* WHERE...Inchelium, Grand Coulee, Republic, Ritzville, Highway 20
Wauconda Summit, Coulee City, Sherman Pass, Wauconda, Wilbur,
Creston, Chesaw Road, Boulder Creek Road, Odessa, and Harrington.
* WHEN...From 7 AM this morning to 1 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Monday morning commute.
* ADDITIONAL DETAILS...Snow will be mostly confined to areas north
of I 90. Little to no snow accumulations south of I 90.
* WHAT...Snow. Total snow accumulations between 2 and 5 inches
except between 5 and 9 inches over the mountains.
* WHERE...In Idaho, Upper Weiser River and West Central Mountains.
In Oregon, Baker County.
* WHEN...Until 5 AM MST /4 AM PST/ Tuesday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult
to impossible. The hazardous conditions could impact the Monday
morning and evening commutes.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED TONIGHT 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 3 to 8 inches. Winds gusting as high as 35 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED TONIGHT 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 Monday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED TONIGHT 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...Heavy snow expected Above 4000 Feet. Total snow
accumulations between 8 and 16 inches.
* WHERE...East Slopes of the Oregon Cascades.
* WHEN...Until 10 AM PST Tuesday.
* IMPACTS...Heavy snowfall and very low visibility will create
extremely dangerous driving conditions.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED TONIGHT 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...Heavy snow expected Above 4000 Feet. Total snow
accumulations between 5 and 10 inches.
* WHERE...Ochoco-John Day Highlands.
* WHEN...Until 10 AM PST Tuesday.
* IMPACTS...Significant snowfall with periods of heavy snowfall
rates will combine with low visibility to create very difficult
driving conditions.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED TONIGHT 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 3 to 8 inches. Winds gusting as high as 35 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
...SIGNIFICANT MOUNTAIN SNOWFALL IS ANTICIPATED TONIGHT 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 4 and 7 inches.
* WHERE...Southern Blue Mountains of Oregon.
* WHEN...Until 10 PM PST Monday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
* WHAT...Snow expected. Total snow accumulations between 1 and 4
inches except between 4 and 8 inches over the mountains. Gusty
southeast winds will accompany snowfall in Baker County.
* WHERE...In Idaho, Upper Weiser River. In Oregon, Baker County.
* WHEN...Until 2 PM MST /1 PM PST/ Monday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult,
especially along Interstate 84 west of Ontario and Highway 95
north of Weiser. The hazardous conditions could impact the Monday
morning commute.
* WHAT...Snow expected. Total snow accumulations 8 to 16 inches
except locally up to 20 inches near Crater Lake. Winds gusting as
high as 40 mph.
* WHERE...The southern Oregon Cascades north of Lake of the Woods,
including Crater Lake National Park and the Cascade passes along
Highways 62, 138, 230, and 58.
* WHEN...Until 4 AM PST Tuesday.
* IMPACTS...Travel could be difficult with slippery, snow covered
roads and reduced visibility. The hazardous conditions could
impact the Monday morning and evening commutes.
* ADDITIONAL DETAILS...Periods of snow tonight into Monday morning
may taper off for a while Monday afternoon, but pick up again
Monday night. Snowfall rates will be mostly one half inch per
hour, but may be 1 inch per hour from 4 to 7 am Monday.