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ESFPQR A series of systems will bring an extended period of wet weather across northwest Oregon and southwest Washington through the weekend. This will lead to rises on rivers and creeks, beginning Wednesday evening, December 25th through at least Sunday, December 29th. There is currently a 15-30% probability that rivers west of the Cascades will reach minor flood stage over the next ten days, except for rivers in southwest Washington which have less than a 5% chance. Heavy rainfall may also lead to ponding of water and localized urban flooding, especially in low lying areas or other areas with poor drainage. Heavy rainfall will also increase the potential for landslides and debris flows in areas of steep terrain. The exact track of these upcoming storms will influence rainfall amounts, and thus the potential for flooding. Shifts in storm track can change the current outlook, so be sure to monitor weather.gov/portland for the latest weather updates, as well as any watches, warnings, or advisories that may be issued. To view the latest river forecasts, visit water.noaa.gov/wfo/pqr.

...WINTER STORM TO BRING HEAVY MOUNTAIN SNOW TO THE CASCADES CHRISTMAS EVENING INTO THURSDAY. LIGHT TO MODERATE SNOW ACROSS PORTIONS OF NORTHERN WASHINGTON AND NORTH IDAHO... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 22 inches. * WHERE...Holden Village, Stevens Pass, and Stehekin. * WHEN...From 1 PM Wednesday to 10 PM PST Thursday. * IMPACTS...Travel could be very difficult leading up to and over Stevens Pass. Heavy wet snow falling at one inch per hour or more at times could lead to isolated tree damage and power outages. * ADDITIONAL DETAILS...Lighter snow amounts will be possible at Stehekin due to marginal temperatures near or above freezing.

...WINTER STORM TO BRING HEAVY MOUNTAIN SNOW TO THE CASCADES CHRISTMAS EVENING INTO THURSDAY. LIGHT TO MODERATE SNOW ACROSS PORTIONS OF NORTHERN WASHINGTON AND NORTH IDAHO... * WHAT...Snow expected. Total snow accumulations between 2 and 5 inches in the valleys and 5 to 8 inches in the mountains including Sherman Pass. * WHERE...Kettle Falls, Newport, Tiger, Boulder Creek Road, Sherman Pass, Flowery Trail Road, Metaline, Wauconda, Fruitland, Chewelah, Inchelium, Springdale-Hunters Road, Northport, Highway 20 Wauconda Summit, Deer Park, Republic, Orin-Rice Road, Chesaw Road, Ione, Metaline Falls, and Colville. * WHEN...From 4 PM Wednesday to 1 PM PST Thursday. * IMPACTS...Winter travel conditions are expected Thursday morning. * ADDITIONAL DETAILS...Lowest confidence in snow amounts is along the Columbia and Pend Oreille Rivers where warmer temperatures could limit accumulations.

...WINTER STORM TO BRING HEAVY MOUNTAIN SNOW TO THE CASCADES CHRISTMAS EVENING INTO THURSDAY. LIGHT TO MODERATE SNOW ACROSS PORTIONS OF NORTHERN WASHINGTON AND NORTH IDAHO... * WHAT...Snow expected. Total snow accumulations between 6 and 12 inches. * WHERE...Twisp, Loup Loup Pass, Winthrop, Mazama, Conconully, and Methow. * WHEN...From 1 PM Wednesday to 1 PM PST Thursday. * IMPACTS...Travel could be very difficult. Snowfall rates could approach one inch per hour at times Christmas night into Thursday morning.

...WINTER STORM TO BRING HEAVY MOUNTAIN SNOW TO THE CASCADES CHRISTMAS EVENING INTO THURSDAY. LIGHT TO MODERATE SNOW ACROSS PORTIONS OF NORTHERN WASHINGTON AND NORTH IDAHO... * WHAT...Heavy snow expected. Total snow accumulations between 9 and 16 inches. * WHERE...Leavenworth and Plain. * WHEN...From 1 PM Wednesday to 1 PM PST Thursday. * IMPACTS...Travel could be very difficult. Heavy wet snow falling at one inch per hour or more at times could lead to isolated tree damage and power outages. * ADDITIONAL DETAILS...The heaviest snow is expected to fall between 10PM and 4AM Thursday.

...WINTER STORM TO BRING HEAVY MOUNTAIN SNOW TO THE CASCADES CHRISTMAS EVENING INTO THURSDAY. LIGHT TO MODERATE SNOW ACROSS PORTIONS OF NORTHERN WASHINGTON AND NORTH IDAHO... * WHAT...Snow expected. Total snow accumulations between 1 and 5 inches. Local amounts up to 9 inches possible on the higher benches. * WHERE...Omak, Oroville, Tonasket, Entiat, Okanogan, Wenatchee, Disautel Pass, Pangborn Airport, Badger Mountain Road, Brewster, Nespelem, Waterville, Number 2 Canyon, Mansfield, Number 1 Canyon, Bridgeport, Cashmere, and Chelan. * WHEN...From 1 PM Wednesday to 1 PM PST Thursday. * IMPACTS...Travel could be very difficult. Snowfall rates of one inch per hour are expected at times Christmas night into early Thursday morning. * ADDITIONAL DETAILS...Lowest confidence in snow amounts is along the Columbia and Okanogan Rivers where warmer temperatures could limit accumulations.

An atmospheric river event Wednesday into Thursday is expected to produce heavy rainfall along the Pacific Coast. Rainfall accumulations of 2 to 4 inches are expected, with locally higher amounts possible. Rises of rivers and streams are expected as a result of this heavy precipitation, with the Bogachiel River at La Push at the highest risk of rising above flood stage Thursday afternoon. * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of northwest Washington, including the following county, Clallam. * WHEN...From Wednesday afternoon through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Heavy rainfall from Wednesday night into Thursday may drive the Bogachiel River at La Push into minor flood stage. - http://www.weather.gov/safety/flood

* WHAT...For the Wind Advisory, southeast winds 15 to 30 mph with gusts up to 55 mph expected. For the High Wind Watch, south winds 20 to 35 mph with gusts up to 60 mph possible. * WHERE...Admiralty Inlet Area, San Juan County, Western Skagit County, and Western Whatcom County. * WHEN...For the Wind Advisory, from 7 AM to 10 PM PST Wednesday. For the High Wind Watch, from Wednesday evening through Thursday afternoon. * 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...For the Wind Advisory, southeast winds 15 to 25 mph with gusts up to 50 mph expected. For the High Wind Watch, south winds 20 to 40 mph with gusts up to 60 mph possible. * WHERE...North Coast. * WHEN...For the Wind Advisory, from 4 AM to 4 PM PST Wednesday. For the High Wind Watch, from Wednesday evening through Thursday afternoon. * 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 20 to 35 mph with gusts up to 60 mph possible. * WHERE...Central Coast. * WHEN...From Wednesday evening through Thursday afternoon. * 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...For the Wind Advisory, southeast winds 15 to 30 mph with gusts up to 55 mph expected. For the High Wind Watch, south winds 20 to 35 mph with gusts up to 60 mph possible. * WHERE...Admiralty Inlet Area, San Juan County, Western Skagit County, and Western Whatcom County. * WHEN...For the Wind Advisory, from 7 AM to 10 PM PST Wednesday. For the High Wind Watch, from Wednesday evening through Thursday afternoon. * 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...For the Wind Advisory, southeast winds 15 to 25 mph with gusts up to 50 mph expected. For the High Wind Watch, south winds 20 to 40 mph with gusts up to 60 mph possible. * WHERE...North Coast. * WHEN...For the Wind Advisory, from 4 AM to 4 PM PST Wednesday. For the High Wind Watch, from Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.

ESFSEW An atmospheric river remains on track to bring significant rainfall to the Olympic Peninsula Wednesday into Thursday. Widespread rainfall totals of 3 to 5 inches are expected in the mountains, with locally over 6 inches over the highest peaks. Snow levels will increase from 3,000 feet up to around 4,000 to 5,000 feet during this time frame, with the lower snow levels over the Olympic Mountain Peaks. An extended wet period remains on track with snow levels above 4000 ft Thursday through next weekend over the Olympics, and into portions of southwestern Washington. The area of concern for additional river flooding impacts may expand east to include rivers in Thurston and Lewis counties. Please monitor the latest river forecasts from the National Weather Service for additional information.

* WHAT...For the High Surf Advisory, large waves and hazardous surf conditions. Breakers up to 25 to 30 feet. For the Coastal Flood Advisory, tidal overflow flooding expected. * WHERE...South Washington Coast. * WHEN...For the High Surf Advisory, from 4 PM Wednesday to 10 PM PST Thursday. For the Coastal Flood Advisory, from 6 AM to noon PST Thursday. * IMPACTS...Minor flooding, up to one foot above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers. Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low-lying shoreline. * ADDITIONAL DETAILS...There is a high threat for sneaker waves. Toke Point is forecast to reach 11.5 feet at 9 am on Thursday.

* WHAT...For the High Surf Advisory, large waves and hazardous surf conditions. Breakers up to 25 to 30 feet. For the Coastal Flood Advisory, tidal overflow flooding expected. * WHERE...South Washington Coast. * WHEN...For the High Surf Advisory, from 4 PM Wednesday to 10 PM PST Thursday. For the Coastal Flood Advisory, from 6 AM to noon PST Thursday. * IMPACTS...Minor flooding, up to one foot above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers. Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low-lying shoreline. * ADDITIONAL DETAILS...There is a high threat for sneaker waves. Toke Point is forecast to reach 11.5 feet at 9 am on Thursday.

* WHAT...Large waves and hazardous surf conditions. Breakers up to 25 to 30 feet. * WHERE...North and Central Coast of Oregon. * WHEN...From 4 PM Wednesday to 10 PM PST Thursday. * IMPACTS...Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low- lying shoreline. * ADDITIONAL DETAILS...There is a high threat for sneaker waves.

* WHAT...South winds 25 to 35 mph with gusts up to 50 mph expected for the base of the northern Blue Mountains of Oregon and Washington. * WHERE...In Oregon, Foothills of the Northern Blue Mountains of Oregon. In Washington, Foothills of the Blue Mountains of Washington. * WHEN...From 10 PM Wednesday to 10 AM PST Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Foothills of the Southern Blue Mountains of Oregon. * WHEN...From 10 PM Wednesday to 10 AM PST Thursday. * 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 50 mph expected for Ladd and Pyles Canyons. * WHERE...Grande Ronde Valley. * WHEN...From 10 PM Wednesday to 10 AM PST Thursday. * 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 50 mph expected for the base of the northern Blue Mountains of Oregon and Washington. * WHERE...In Oregon, Foothills of the Northern Blue Mountains of Oregon. In Washington, Foothills of the Blue Mountains of Washington. * WHEN...From 10 PM Wednesday to 10 AM PST Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.