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Flood Warning issued February 21 at 9:52PM PST by NWS Seattle WA

4 months 1 week ago
...Forecast flooding changed from Minor to Moderate severity for the following rivers in Washington... Skokomish River At Potlatch affecting Mason County. .Heavy rain over the south slopes of the Olympics through the weekend, with amounts of 4 to 6 inches predicted. Snow levels will rise to near 7000 feet. This combination will drive the Skokomish River above flood stage Saturday. * WHAT...Moderate flooding is forecast. * WHERE...Skokomish River at Potlatch. * WHEN...From Saturday evening until further notice. * IMPACTS...At 17.5 feet, the Skokomish River will cause moderate flooding, with deep and quick flood waters inundating some residential areas, many roads, and much of the farm land in the Skokomish Valley. Inundated roads include the Skokomish Valley road, Bourgault Road West, Purdy Cutoff Road, and Highway 106. * ADDITIONAL DETAILS... - At 9:30 PM PST Friday the stage was 14.9 feet. - Flood stage is 16.5 feet. - Forecast...The river is expected to rise above flood stage tomorrow evening and continue rising to 17.7 feet early Sunday morning. Additional rises are possible thereafter. - Flood History...This crest compares to a previous crest of 17.6 feet on 10/20/2003. - http://www.weather.gov/safety/flood
NWS

Hydrologic Outlook issued February 21 at 8:13PM PST by NWS Spokane WA

4 months 1 week ago
ESFOTX Where: Spokane, Whitman, Asotin, and Garfield Counties in Washington. Kootenai, Shoshone, Benewah, Latah, Nez Perce, and Lewis Counties in Idaho. What: An atmospheric river will deliver warm, rainy, and breezy weather to the region this weekend into early next week. High temperatures Sunday and Monday will warm into the upper 40s to low 50s. Additionally, rainfall amounts of 0.60 to 1.25 inches in the lowlands and 1 to 2 inches in the mountains are currently forecasted. Rapid lowland snowmelt will lead to rises on area creeks, streams, and rivers. Paradise Creek in Moscow is currently forecasted to reach Minor Flood Stage Sunday morning. Hangman Creek in Spokane, Little Spokane River at Dartford, Palouse River at Potlatch, and South Fork Palouse River at Pullman are forecasted to rise to near bankfull conditions on Sunday. Minor field flooding and ponding of water in areas of poor or clogged drainage will also be a concern. When: Beginning Saturday evening and continuing through Monday. Heaviest rainfall will occur in two rounds: Saturday night into Sunday morning and Sunday afternoon into early Monday. Monitor the latest weather and river forecasts from the National Weather Service at weather.gov/Spokane or water.noaa.gov/wfo/otx.
NWS

Flood Watch issued February 21 at 7:05PM PST until February 25 at 6:49AM PST by NWS Spokane WA

4 months 1 week ago
...The National Weather Service in Spokane WA has issued a Flood Watch for the following rivers in Idaho...Washington... Paradise Creek at Moscow affecting Latah and Whitman Counties. .Periods of moderate to at times heavy rain will fall Saturday night through Sunday night. Rain will come in two waves with the first arriving Saturday night into early Sunday and the second arriving Sunday night. Mild temperatures will also result in the melt off of snow at lower elevations. The combination of rain with melting snow is expected to result in rapid rises on Paradise Creek late Saturday with flooding possible along the creek through at least Monday before water recedes. For the Paradise Creek ...including Moscow...flooding is possible. * WHAT...Flooding is possible. * WHERE...Paradise Creek at Moscow. * WHEN...From late Saturday night to Tuesday morning. * IMPACTS...At 9.2 feet, Water will be out of the creek at the intersection of Bridge Street and Hillcrest Drive and may also be flowing into the intersection at this stage. Flooding near Damen Street. At 10.0 feet, Water will be up to the homes near the intersection of Bridge and Hillcrest. Intersection at 5th and Roosevelt will be flooded. Storm drains along Main Street will be backed up and overflowing. Mountainview Park will be flooded. Bike path along the creek near the University will be under 6 inches of water. * ADDITIONAL DETAILS... - At 5:45 PM PST Friday the stage was 4.9 feet. - Forecast...Flood stage may be reached early Sunday morning. - Flood stage is 9.2 feet. - http://www.weather.gov/safety/flood
NWS

Avalanche Warning issued February 21 at 6:35PM PST by NWS Seattle WA

4 months 1 week ago
AVWSEW The following message is transmitted at the request of the Northwest Avalanche Center. ...The Northwest Avalanche Center in Seattle has issued an Avalanche Warning... * WHAT...Very dangerous conditions are expected to develop throughout the day as heavy wet snow and rain overload a dry and weak snowpack. Very large natural avalanches will occur and may descend into lower elevation forested areas. High avalanche danger is likely to spread into other regions Saturday night into Sunday. * WHERE...The Olympic Mountains and the west slopes of the Cascades from the Canadian border to King County, including the Mt Baker area, Hwy 542, Hwy 20 West, and the Mountain Loop Hwy. * WHEN...In effect from Fri 18:00 PST to Sat 18:00 PST. Very dangerous avalanche conditions are expected to continue and spread throughout the Cascades. * IMPACTS...Very large natural avalanches are expected. These will be more than enough to bury, injure, or kill backcountry travelers. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Avoid all areas where avalanches can start, run, or stop. This includes openings in the forest well below large steep alpine slopes. Consult https://www.nwac.us/ or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center.
NWS

Hydrologic Outlook issued February 21 at 3:24PM PST by NWS Pendleton OR

4 months 1 week ago
ESFPDT Synopsis: Rain and high mountain snow from and multiple systems this weekend and early next week will lead to rising water levels on area streams and rivers. Rainfall amounts of 2 to 5 inches are expected in the Cascades and 1 to 3 inches in the eastern Oregon mountains. In addition, temperatures will be rising to the 40s and lower 50s in the mountains which will lead to snow melt adding even more water to area rivers and streams. The National Water Model is highlighting high water on numerous smaller streams and creeks, but streamflow amounts are generally only slightly higher than high water thresholds. What: Precipitation fed by an atmospheric river and snow melt due to warmer temperatures this weekend into early next week will lead to rises on area creeks, streams and rivers. Rivers are low enough so that most rivers will remain below bankfull. However, the Walla Walla River at Touchet and the Naches River at Cliffdell are expected to exceed bankfull late Sunday night before receding Monday and Tuesday. Another concern will be rapid rises on smaller streams and creeks due to heavier downpours and snowmelt. This could lead to debris flows on recent burn scars and over steep terrain. The Walla Walla River at Touchet has a 44 percent chance of exceeding bankfull but less than a 5 percent chance of reaching minor flood stage. It is expected to reach bankfull late Sunday evening and remain there through Tuesday morning. The Naches River at Cliffdell has a 29 percent chance of exceeding bankfull but less than a 5 percent chance of reaching minor flood stage. It is expected to reach bankfull late Sunday evening and remain there until dropping below bankfull Monday afternoon. The Klickitat River at Pitt is forecast remain below bankfull, but model probabilities give it a 13 percent chance of rising above bankfull and a 9 percent chance of reaching minor flood stage. All other river forecast points have a less than a 10 percent chance of exceeding bankfull. When: Rain will begin tonight and continue through Monday with the heaviest rain expected Saturday night and Sunday. Where: The Upper and Lower East Slopes of the Washington and Oregon Cascades, The Simcoe Highlands, The Northern and Southern Blue Mountains, The Blue Mountain Foothills of Washington and Oregon, Wallowa County and the Grande Ronde Valley. This Hydrologic Outlook will be updated as needed due to changing conditions.
NWS

Hydrologic Outlook issued February 21 at 3:24PM PST by NWS Pendleton OR

4 months 1 week ago
ESFPDT Synopsis: Rain and high mountain snow from and multiple systems this weekend and early next week will lead to rising water levels on area streams and rivers. Rainfall amounts of 2 to 5 inches are expected in the Cascades and 1 to 3 inches in the eastern Oregon mountains. In addition, temperatures will be rising to the 40s and lower 50s in the mountains which will lead to snow melt adding even more water to area rivers and streams. The National Water Model is highlighting high water on numerous smaller streams and creeks, but streamflow amounts are generally only slightly higher than high water thresholds. What: Precipitation fed by an atmospheric river and snow melt due to warmer temperatures this weekend into early next week will lead to rises on area creeks, streams and rivers. Rivers are low enough so that most rivers will remain below bankfull. However, the Walla Walla River at Touchet and the Naches River at Cliffdell are expected to exceed bankfull late Sunday night before receding Monday and Tuesday. Another concern will be rapid rises on smaller streams and creeks due to heavier downpours and snowmelt. This could lead to debris flows on recent burn scars and over steep terrain. The Walla Walla River at Touchet has a 44 percent chance of exceeding bankfull but less than a 5 percent chance of reaching minor flood stage. It is expected to reach bankfull late Sunday evening and remain there through Tuesday morning. The Naches River at Cliffdell has a 29 percent chance of exceeding bankfull but less than a 5 percent chance of reaching minor flood stage. It is expected to reach bankfull late Sunday evening and remain there until dropping below bankfull Monday afternoon. The Klickitat River at Pitt is forecast remain below bankfull, but model probabilities give it a 13 percent chance of rising above bankfull and a 9 percent chance of reaching minor flood stage. All other river forecast points have a less than a 10 percent chance of exceeding bankfull. When: Rain will begin tonight and continue through Monday with the heaviest rain expected Saturday night and Sunday. Where: The Upper and Lower East Slopes of the Washington and Oregon Cascades, The Simcoe Highlands, The Northern and Southern Blue Mountains, The Blue Mountain Foothills of Washington and Oregon, Wallowa County and the Grande Ronde Valley. This Hydrologic Outlook will be updated as needed due to changing conditions.
NWS

Hydrologic Outlook issued February 21 at 11:55AM PST by NWS Seattle WA

4 months 1 week ago
ESFSEW A series of storms will begin to impact western Washington on Friday and continue through Tuesday. The next storm on Saturday will have heavy rain at times as will a third storm right on its heels Sunday. Precipitation amounts could be 3 to 5 inches storm total with locally heavier amounts, and snow levels rising above 7000 feet. With moderate temperatures now and warmer temperatures to come, this will also result in some snow melt at low to mid elevations. These factors will combine to result in a potential for river flooding. The most likely areas for river flooding will be for rivers flowing off of the Cascades and Olympics. Urban and small stream nuisance flooding and rainfall-induced shallow landslides will also be possible. Please monitor the latest river forecasts from the National Weather Service for additional information.
NWS

Hydrologic Outlook issued February 21 at 11:51AM PST by NWS Spokane WA

4 months 1 week ago
ESFOTX Where: Spokane, Whitman, Asotin, and Garfield Counties in Washington. Kootenai, Shoshone, Benewah, Latah, Nez Perce, and Lewis Counties in Idaho. What: An atmospheric river will deliver warm, rainy, and breezy weather to the region this weekend into early next week. High temperatures Sunday and Monday will warm into the upper 40s to low 50s. Additionally, rainfall amounts of 0.60 to 1.25 inches in the lowlands and 1 to 2 inches in the mountains are currently forecasted. Rapid lowland snowmelt will lead to rises on area creeks, streams, and rivers. Paradise Creek in Moscow is currently forecasted to reach Minor Flood Stage Sunday morning. Hangman Creek in Spokane, Little Spokane River at Dartford, and South Fork Palouse River at Pullman are forecasted to rise to near bankfull conditions on Sunday. Minor field flooding and ponding of water in areas of poor or clogged drainage will also be a concern. When: Beginning Saturday evening and continuing through Monday. Heaviest rainfall will occur in two rounds: Saturday night into Sunday morning and Sunday afternoon into early Monday. Monitor the latest weather and river forecasts from the National Weather Service at weather.gov/Spokane or water.noaa.gov/wfo/otx.
NWS

Flood Watch issued February 21 at 11:48AM PST until February 26 at 4:00AM PST by NWS Seattle WA

4 months 1 week ago
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of northwest and west central Washington, including the following counties, in northwest Washington, Grays Harbor and Skagit. In west central Washington, King, Lewis, Pierce, Snohomish and Thurston. * WHEN...From Sunday morning through late Tuesday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Area creeks and streams are running high and could flood with more heavy rain. Landslide risk will also increase through this period. * ADDITIONAL DETAILS... - A series of storms via an atmospheric river will produce periods of rain, heavy at times, over western Washington from Friday into Tuesday. The heaviest of the rain will be concentrated over the Olympics and Cascades, where rain totals through this period will range from 3 to 5 inches, with locally higher amounts possible. Snow levels will increase to above 7,000 feet Saturday evening. These conditions could result in flooding in a number of rivers. - http://www.weather.gov/safety/flood
NWS

Flood Warning issued February 21 at 10:29AM PST by NWS Seattle WA

4 months 1 week ago
...The National Weather Service in Seattle WA has issued a Flood Warning for the following rivers in Washington... Skokomish River At Potlatch affecting Mason County. .Heavy rain over the south slopes of the Olympics through the weekend, with amounts of 4 to 6 inches predicted. Snow levels will rise to near 7000 feet. This combination will drive the Skokomish River above flood stage Saturday. * WHAT...Moderate flooding is forecast. * WHERE...Skokomish River at Potlatch. * WHEN...From Saturday evening until further notice. * IMPACTS...At 16.5 feet, the Skokomish River will cause widespread flooding of pasture lands, with water flowing quickly over West Bourgault Road and Skokomish Valley Road. * ADDITIONAL DETAILS... - At 9:30 AM PST Friday the stage was 15.0 feet. - Flood stage is 16.5 feet. - Forecast...The river is expected to rise above flood stage Saturday evening. The river will crest around 17.8 feet late this weekend, and remain above flood stage well into next week. - http://www.weather.gov/safety/flood
NWS

Hydrologic Outlook issued February 21 at 3:52AM PST by NWS Portland OR

4 months 1 week ago
ESFPQR An series of frontal systems will bring heavy rainfall to northwest Oregon and southwest Washington this weekend. Rain will begin Saturday afternoon, and intensify overnight through Sunday. This will lead to rises on rivers and creeks, especially along the coast on February 22nd through the 23rd. Main stem rivers may be delayed to respond, and flooding may occur beyond this time frame. There is around a 20-25% chance of the Wilson River, the Grays River, and other localized quick responding coastal rivers of reaching minor flood stage on Sunday. Confidence in flooding is low as the location of heaviest precipitation will greatly depend on where the warm front sets up. In the case that this system over performs, more widespread flooding is possible. Heavy rainfall along the Cascades is expected and combined with recent snow accumulation, there is elevated landslide risk. Heavy rainfall may also lead to ponding of water, general lowland flooding, and localized urban flooding, especially in low-lying areas or other poor-drainage areas. Heavy rainfall will also increase the potential for landslides in areas of steep terrain and debris flows over areas that have been burned by wildfires over the past few years. Shifts in the forecast storm track can change the outlook and probabilities for river flooding, 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.
NWS

Hydrologic Outlook issued February 21 at 3:52AM PST by NWS Portland OR

4 months 1 week ago
ESFPQR An series of frontal systems will bring heavy rainfall to northwest Oregon and southwest Washington this weekend. Rain will begin Saturday afternoon, and intensify overnight through Sunday. This will lead to rises on rivers and creeks, especially along the coast on February 22nd through the 23rd. Main stem rivers may be delayed to respond, and flooding may occur beyond this time frame. There is around a 20-25% chance of the Wilson River, the Grays River, and other localized quick responding coastal rivers of reaching minor flood stage on Sunday. Confidence in flooding is low as the location of heaviest precipitation will greatly depend on where the warm front sets up. In the case that this system over performs, more widespread flooding is possible. Heavy rainfall along the Cascades is expected and combined with recent snow accumulation, there is elevated landslide risk. Heavy rainfall may also lead to ponding of water, general lowland flooding, and localized urban flooding, especially in low-lying areas or other poor-drainage areas. Heavy rainfall will also increase the potential for landslides in areas of steep terrain and debris flows over areas that have been burned by wildfires over the past few years. Shifts in the forecast storm track can change the outlook and probabilities for river flooding, 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.
NWS

Dense Fog Advisory issued February 21 at 3:36AM PST until February 21 at 9:00AM PST by NWS Spokane WA

4 months 1 week ago
* WHAT...Visibility one quarter mile or less in dense freezing fog. * WHERE...Rockford, Hayden, Post Falls, Davenport, Cheney, Spokane Valley, Othello, Downtown Spokane, Ephrata, Moses Lake, Quincy, Airway Heights, Fairfield, Worley, and Coeur d'Alene. * WHEN...Until 9 AM PST this morning. * IMPACTS...Low visibility and freezing fog will result in slick and hazardous driving conditions.
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