* WHAT...Snow expected at or above elevations greater than 4000 ft.
Total snow accumulations between 4 and 16 inches. Winds gusting as
high as 35 mph.
* WHERE...West Slopes North Cascades and Passes.
* WHEN...From 6 PM Sunday to 1 PM PST Tuesday.
* IMPACTS...Travel could be very difficult including SR 20 and
Washington Pass.
* WHAT...Snow expected Above 4000 feet. Total snow accumulations 5
to 14 inches. Highest amounts near the Cascade Crest and over
Washington Pass.
* WHERE...Western Okanogan County County including Washington Pass.
* WHEN...From 6 PM Sunday to 1 PM PST Tuesday.
* IMPACTS...Be prepared for winter travel conditions across
Washington Pass and within the backcountry.
* ADDITIONAL DETAILS...Persistent light snow will fall over the
North Cascades starting Sunday and continuing into Tuesday
afternoon. A stronger winter storm will arrive Tuesday evening
into Wednesday with potential for 1-2 feet of additional snow.
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of southwest and west central Idaho and southeast
Oregon.
* WHEN...Until 5 AM MST /4 AM PST/ Monday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
Multiple storms will impact the area this weekend with heavy rain
and snow levels starting at 6000 feet and remaining above 4000 feet.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...From Sunday evening through late Monday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded.
* ADDITIONAL DETAILS...
- Progressively stronger storms starting Saturday will produce
heavy rain in the Olympic Mountains. Two to four inches of
rain are expected Sunday night through Monday and another
three to six inches Tuesday night into Thursday. With snow
levels above the top of the Skokomish River watershed, this
rain will likely drive the Skokomish river above flood stage
overnight Sunday and possibly above moderate stage with the
third storm.
- http://www.weather.gov/safety/flood
ESFSEW
A series of strong and wet Pacific storm systems will track through
western Washington next week with sharp rises on the rivers flowing
off the Olympics and Cascades. There is little break between each
system. As a result, several rivers are forecast to reach Action
Stage with Minor flooding possible, especially by Wednesday or
Thursday.
Flooding extent will depend on rainfall rates, temperatures, snow
levels, and total rainfall with each of these weather systems next
week.
Please monitor the latest river forecasts from the National Weather
Service for additional information.
* WHAT...Snow expected above 5000 feet. Total snow accumulations
between 8 and 16 inches. Winds gusting as high as 50 mph.
* WHERE...The southern Oregon Cascades, mainly north of Highway 140,
including Crater Lake, and Highways 62, 230, 138 and 58.
* WHEN...From 4 AM Monday to 10 AM PST Tuesday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Monday morning and evening
commutes. Gusty winds could bring down tree branches.
* ADDITIONAL DETAILS...Snowfall rates Monday morning with the front
could briefly reach 1
inch per hour causing low visibility and hazardous driving
conditions. This is most likely between 6 and 10 am.
* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph
expected.
* WHERE...The higher terrain of Lake County and eastern Klamath
County, and Modoc County, including Winter Rim, Highway 31 from
Summer Lake to Paisley, parts of Highway 140 east of Lakeview and
Highway 299 near Cedar Pass.
* WHEN...From 10 PM Sunday to 10 AM PST Monday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Multiple storms will impact the area this weekend with heavy rain
and snow levels starting at 6000 feet and remaining above 4000 feet.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...From Sunday evening through late Monday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded.
* ADDITIONAL DETAILS...
- Progressively stronger storms starting Saturday will produce
heavy rain in the Olympic Mountains. Two to four inches of
rain are expected Sunday night through Monday and another
three to six inches Tuesday night into Thursday. With snow
levels above the top of the Skokomish River watershed, this
rain will likely drive the Skokomish river above flood stage
overnight Sunday and possibly above moderate stage with the
third storm.
- http://www.weather.gov/safety/flood
* WHAT...An extended period of stagnant air, with light winds
and little vertical mixing.
* WHERE...Portions of southwest and west central Idaho and
northeast and southeast Oregon.
* WHEN...Until 5 AM MST /4 AM PST/ Sunday.
* IMPACTS...Periods of air stagnation can lead to the buildup of
pollutants near the surface.
This weekend will see multiple storms with heavy rain and snow
levels starting at 6000 feet and remaining above 4000 feet.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...From Sunday evening through late Monday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded.
* ADDITIONAL DETAILS...
- Progressively stronger storms starting Saturday will produce
heavy rain in the Olympic Mountains. Two to four inches of
rain are expected Sunday night through Monday and another
three to six inches Tuesday night into Thursday. With snow
levels above the top of the Skokomish River watershed, this
rain will likely drive the Skokomish river above flood stage
overnight Sunday and possibly above moderate stage with the
third storm.
- http://www.weather.gov/safety/flood
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Across the Umpqua Valley in Central Douglas County.
* WHEN...Until 9 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 5 AM MST /4 AM PST/ Sunday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...South Willamette Valley.
* WHEN...Until noon PST today.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Across the Umpqua Valley in Central Douglas County.
* WHEN...Until 8 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less at times in dense fog.
* WHERE...South Willamette Valley.
* WHEN...Until 9 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less at times in dense fog.
* WHERE...Central and Southern Willamette Valley.
* WHEN...Until 9 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Snow above 4500 feet. Additional snow accumulations up to
two inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Snow above 4000 feet. Additional snow accumulations up to
one inch.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Plan on slippery road conditions.