Aggregator

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 16 inches. Winds gusting as high as 40 mph. * WHERE...Lower Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Heavy snowfall and very low visibility will create extremely dangerous driving conditions. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Significantly lowered visibilities in stronger winds will be possible.

* WHAT...Blizzard conditions expected above 2000 feet. Total snow accumulations between 8 and 20 inches. Winds gusting as high as 60 mph. * WHERE...Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

* WHAT...Wet snow expected. Total snow accumulations 2 to 4 inches, locally 6-8 across the higher terrain. Winds gusting as high as 35 mph. * WHERE...Kittitas Valley. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Periods of moderate and heavy snow will combine with low visibilities to create difficult driving conditions. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes.

* WHAT...Snow expected above 3500 feet. Total snow accumulations between 2 and 8 inches, locally 10+ across the peaks and crests. Winds gusting as high as 60 mph. * WHERE...East Slopes of the Oregon Cascades. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Travel could be difficult due to periods of moderate to heavy snow. Strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Brief periods of near whiteout conditions may be possible with this system. Widespread blizzard level conditions should be limited to the peaks of the region.

* WHAT...South to Southeast winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Foothills of the Blue Mountains of Washington. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...Southeast winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...John Day Basin, Grande Ronde Valley, and Lower Columbia Basin of Oregon. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...South to southeast winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Foothills of the Blue Mountains of Oregon, North Central Oregon, and Central Oregon. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...Dangerously large breaking waves of 25 to 30 feet. * WHERE...All beaches and coastlines of Douglas, Coos, and Curry counties. * WHEN...From 10 AM this morning to 4 PM PST Wednesday. * IMPACTS...Extremely large breaking waves will create very hazardous conditions along beaches and area shorelines. Waves will inundate beaches, push large logs up the beach, and surge into normally dry areas. Infrastructure damage and significant beach erosion can be expected. * ADDITIONAL DETAILS...The largest breaking waves are expected along south facing shorelines, such as the beaches near Brookings, Port Orford, and Cape Blanco. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Snow. Additional snow accumulations at pass level of 8 to 12 inches through Wednesday morning. Winds gusting as high as 55 mph Tuesday evening and overnight. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult at times. Strong winds could cause damage to trees and power lines. Blowing snow could significantly reduce visibility at times. * ADDITIONAL DETAILS...Snow levels around 2000-3000 feet this afternoon will rise to 3500-4000 feet by Tuesday evening. Highest accumulations expected above 4000 feet.

* WHAT...Snow. Additional snow accumulations at pass level of 8 to 12 inches through Wednesday morning. Winds gusting as high as 55 mph Tuesday evening and overnight. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult at times. Strong winds could cause damage to trees and power lines. Blowing snow could significantly reduce visibility at times. * ADDITIONAL DETAILS...Snow levels around 2000-3000 feet this afternoon will rise to 3500-4000 feet by Tuesday evening. Highest accumulations expected above 4000 feet.

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph. * WHERE...South Washington Coast. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Strongest gusts expected on beaches and headlands.

* WHAT...South to southeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Greater Portland/Vancouver Metro, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Gusty winds will 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 60 mph. * WHERE...North and Central Coast Range Mountains of Oregon. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...South to southeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Greater Portland/Vancouver Metro, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...South winds 25 to 40 mph with gusts up to 60 mph. * WHERE...North and Central Coast of Oregon. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Stronger gusts to around 70 mph are possible on beaches and headlands.

A major atmospheric river is bringing periods of heavy rainfall and the potential for flooding in urban and rural areas through Friday. Small creeks and streams will see rapid rises and may escape their banks. There is a chance of main stem river flooding later in the week but for now forecasts remain just below flood stage. The town of Brookings could see impacts along the Chetco River when high tides align with the river crest. * WHAT...Flooding caused by continued excessive rainfall is possible. * WHERE...Portions of northern California including western Siskiyou County, and southwest Oregon including Curry County, Josephine County, Siskiyou Mountains, and Southern Oregon Cascades. * WHEN...From now through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers and creeks and low-lying or flood-prone areas. Flooding may also occur in poor drainage and urban areas as storm drains and ditches may become clogged with leaves and other debris. There will be an increased risk of rock fall and landslides on steep slopes and road cuts. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

* WHAT...South southeasterly winds 20 to 30 mph with general gusts of 35 to 45 mph expected. Localized gusts could be as high as 50 mph. * WHERE...Harney County, especially in the south. * WHEN...From 7 PM this evening to 10 AM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Southeast winds 15 to 30 mph with gusts up to 45 mph expected. * WHERE...Baker County and Oregon Lower Treasure Valley, especially in higher terrain and the Interstate 84 corridor. * WHEN...From 7 PM PST /8 PM MST/ this evening to 10 AM PST /11 AM MST/ Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest Washington, including the following county, Mason. * WHEN...From late tonight through late Friday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - While two to three inches of precipitation in the Olympics will force sharp rises on the Skokomish River with flooding possible, relatively low snow levels will diminish the chance of flooding for Wednesday and it is looking less likely. The next storm Friday will be much warmer but less precipitation. Melting snow will contribute to runoff resulting in another potential for flooding. - http://www.weather.gov/safety/flood

* WHAT...Southeast winds 15 to 30 mph with gusts up to 45 mph expected. * WHERE...Baker County and Oregon Lower Treasure Valley. Especially in higher terrain and the I-84 corridor. * WHEN...From 7 PM PST /8 PM MST/ this evening to 10 AM PST /11 AM MST/ Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.