Weather Alerts for Seattle and VicinityIssued by the National Weather Service |
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| SEATTLE AND VICINITY | ||
Areas Affected: King, WA |
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| Effective: Fri, 12/12 8:08pm | Updated: Fri, 12/12 9:37pm | Urgency: Expected |
| Expires: Sat, 12/13 4:15am | Severity: Severe | Certainty: Likely |
Details:
...Forecast flooding changed from Minor to Moderate severity for the following rivers in Washington... Green River Near Auburn affecting King County. .Dam operations to reduce the flood pool of area dams will increase the flow levels below the dams. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Green River near Auburn. * WHEN...Until further notice. * IMPACTS...At 12,000.0 cfs, the Green River will inundate low areas from the middle Green River valley downstream to Auburn...with water over several roads including SE Green Valley Rd and West Valley Rd. Levees from Auburn down through Tukwilla may exhibit seeapage and may weaken due to saturation. A flow of 12000 cfs on the Green River corresponds to a phase 4 flood in the King County flood system. * ADDITIONAL DETAILS... - At 6:45 PM PST Friday the flow was 11,000.0 cfs. - Flood flow is 9,000.0 cfs. - Recent Activity...The maximum river flow in the 24 hours ending at 6:45 PM PST Friday was 11,000.0 cfs. - Forecast...The river is expected to rise to a crest of 12,489.7 cfs tomorrow afternoon. - http://www.weather.gov/safety/flood Information: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 415 AM PST. |
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| SEATTLE AND VICINITY | ||
Areas Affected: King, WA |
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| Effective: Fri, 12/12 7:20pm | Updated: Fri, 12/12 9:37pm | Urgency: Immediate |
| Expires: Sat, 12/13 3:30am | Severity: Severe | Certainty: Observed |
Details:
...The Flood Warning is extended for the following rivers in Washington... Cedar River At Renton affecting King County. .Dam operations to reduce the flood pool of area dams will increase the flow levels below the dams. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Cedar River at Renton. * WHEN...Until early Monday morning. * IMPACTS...At 14.5 feet, the Cedar River will flood areas of Renton including the Renton Airport. * ADDITIONAL DETAILS... - At 6:15 PM PST Friday the stage was 15.9 feet. - Flood stage is 13.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 6:15 PM PST Friday was 17.3 feet. - Forecast...The river is expected to fall below flood stage Sunday evening and continue falling to 12.4 feet Monday afternoon. - http://www.weather.gov/safety/flood Information: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 330 AM PST. |
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| SEATTLE AND VICINITY | ||
Areas Affected: King, WA |
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| Effective: Fri, 12/12 7:16pm | Updated: Fri, 12/12 9:37pm | Urgency: Immediate |
| Expires: Sat, 12/13 3:30am | Severity: Severe | Certainty: Observed |
Details:
...The Flood Warning is extended for the following rivers in Washington... Cedar River Near Landsburg affecting King County. .Dam operations to reduce the flood pool of area dams will increase the flow levels below the dams. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Cedar River near Landsburg. * WHEN...Until Sunday evening. * IMPACTS...At 7.5 feet, the Cedar River will cause severe flooding from Landsburg downstream through Maplewood. Deep and swift flood waters will inundate many roads and some residential areas, especially in Maple Valley. Flooding will occur all along the river including headwaters, tributaries, and other streams within and near the Cedar River Basin. A stage of 7.5 feet on the Cedar River corresponds to a phase 4 flood in the King County flood system. * ADDITIONAL DETAILS... - At 6:45 PM PST Friday the stage was 8.2 feet. - Flood stage is 5.7 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 6:45 PM PST Friday was 8.8 feet. - Forecast...The river is expected to fall below flood stage late Sunday morning and continue falling to 4.9 feet Monday afternoon. - Flood History...This crest compares to a previous crest of 7.7 feet on 12/22/1933. - http://www.weather.gov/safety/flood Information: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 330 AM PST. |
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| SEATTLE AND VICINITY | ||
Areas Affected: King, WA |
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| Effective: Fri, 12/12 4:17pm | Updated: Fri, 12/12 9:37pm | Urgency: Immediate |
| Expires: Sat, 12/13 12:30am | Severity: Severe | Certainty: Observed |
Details:
...The Flood Warning is extended for the following rivers in Washington... Snohomish River At Snohomish affecting Snohomish County. Snohomish River Near Monroe affecting Snohomish County. Snoqualmie River Near Carnation affecting King County. Cowlitz River At Randle affecting Lewis County. ...The Flood Warning continues for the following rivers in Washington... Cowlitz River Below Mayfield Dam affecting Lewis County. .Flood waters will continue to drain from streams while the weather stays mostly dry for a few days. * WHAT...Moderate flooding is occurring and minor flooding is forecast. * WHERE...Snoqualmie River near Carnation. * WHEN...Until tomorrow afternoon. * IMPACTS...At 56.0 feet, the Snoqualmie River will cause widespread flooding from Fall City downstream through Carnation and Duvall... inundating much of the farm land and numerous roads. * ADDITIONAL DETAILS... - At 2:15 PM PST Friday the stage was 56.9 feet. - Flood stage is 54.0 feet. - Forecast...The river is expected to fall below flood stage tomorrow and continue falling. - http://www.weather.gov/safety/flood Information: Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Motorists should not attempt to drive around barricades or drive cars through flooded areas. To escape rising water, take the shortest path to higher ground. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 1230 AM PST. |
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| SEATTLE AND VICINITY | ||
Areas Affected: King, WA - Pierce, WA |
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| Effective: Fri, 12/12 3:41pm | Updated: Fri, 12/12 9:37pm | Urgency: Immediate |
| Expires: Fri, 12/12 11:45pm | Severity: Severe | Certainty: Observed |
Details:
...The Flood Warning continues for the following rivers in Washington... Cedar River At Renton affecting King County. Green River Near Auburn affecting King County. White River Near Mud Mtn. Dam Outflow affecting King and Pierce Counties. White River At R Street Bridge affecting King and Pierce Counties. ...Forecast flooding changed from Moderate to Major severity and increased in duration for the following rivers in Washington... Cedar River Near Landsburg affecting King County. .Dam operations to reduce the flood pool area dams will increase the flow levels or maintain elevated flow levels below the dams. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...White River at R Street Bridge. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 1:45 PM PST Friday the flow was 8,630.0 cfs. - Flood flow is 7,500.0 cfs. - Forecast...The river is expected to rise to a crest of 9,800 cfs late tomorrow morning. The river will remain steady through the weekend. - http://www.weather.gov/safety/flood Information: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued by this evening at 1145 PM PST. |
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| SEATTLE AND VICINITY | ||
Areas Affected: King, WA - Pierce, WA |
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| Effective: Fri, 12/12 3:41pm | Updated: Fri, 12/12 9:37pm | Urgency: Immediate |
| Expires: Fri, 12/12 11:45pm | Severity: Severe | Certainty: Observed |
Details:
...The Flood Warning continues for the following rivers in Washington... Cedar River At Renton affecting King County. Green River Near Auburn affecting King County. White River Near Mud Mtn. Dam Outflow affecting King and Pierce Counties. White River At R Street Bridge affecting King and Pierce Counties. ...Forecast flooding changed from Moderate to Major severity and increased in duration for the following rivers in Washington... Cedar River Near Landsburg affecting King County. .Dam operations to reduce the flood pool area dams will increase the flow levels or maintain elevated flow levels below the dams. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...White River near Mud Mtn. Dam Outflow. * WHEN...Until further notice. * IMPACTS...At 8,000.0 cfs, the White River will spill over its banks below Mud Mountain Dam producing high water that will encroach on roads and residences, particularly in the Red Creek area. 8000 cfs on the White River is within phase 3 flood in the King County flood system. * ADDITIONAL DETAILS... - At 3:00 PM PST Friday the flow was 9,550.0 cfs. - Flood flow is 9,000.0 cfs. - Recent Activity...The maximum river flow in the 24 hours ending at 3:00 PM PST Friday was 9,550.0 cfs. - Forecast...The river is expected to continue at 9500 cfs through the weekend. - http://www.weather.gov/safety/flood Information: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued by this evening at 1145 PM PST. |
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| SEATTLE AND VICINITY | ||
Areas Affected: San Juan County - Cascades of Whatcom and Skagit Counties - Cascades of Snohomish and Northern King Counties - Cascades of Southern King County - Cascades of Pierce and Lewis Counties - Foothills and Valleys of the North Cascades - Foothills and Valleys of Snohomish and Northern King Counties - Foothills and Valleys of Central King County - Foothills and Valleys of Pierce and Southern King Counties - Foothills and Valleys of Thurston and Lewis Counties - Lowlands of Western Whatcom County - Lowlands of Western Skagit and Northwestern Snohomish Counties - Downtown Everett / Marysville Area - Shoreline / Lynnwood / South Everett Area - Eastside - City of Seattle - Lowlands of Pierce and Southern King Counties - Olympia and Southern Puget Sound - Lowlands of Lewis and Southern Thurston Counties - Middle Chehalis River Valley - Willapa and Black Hills - Southern Hood Canal - Northern Hood Canal - Eastern Kitsap County - Port Townsend Area - Eastern Strait of Juan de Fuca - Western Strait of Juan de Fuca - Lake Crescent Area Including US 101 - Olympics - Foothills of the Western and Southern Olympic Peninsula - Northern Washington Coast - Grays Harbor County Coast - Lower Chehalis River Valley - Island County |
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| Effective: Fri, 12/12 5:02am | Updated: Fri, 12/12 9:37pm | Urgency: Expected |
| Expires: Sat, 12/13 10:00am | Severity: Moderate | Certainty: Observed |
Details:
Rainfall of 2 to 12 inches over the past several days has increased soil moisture to very high levels across western Washington. This amount of rain will put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas. Numerous landslides have already been reported in the western Cascades in western Washington. More landslides are possible. Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue for several days after the rain ends. For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages. For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn |
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| SEATTLE AND VICINITY | ||
Areas Affected: Clallam, WA - Grays Harbor, WA - Jefferson, WA - King, WA - Kitsap, WA - Lewis, WA - Mason, WA - Pierce, WA - Skagit, WA - Snohomish, WA - Thurston, WA - Whatcom, WA |
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| Effective: Fri, 12/12 5:27pm | Updated: Fri, 12/12 9:37pm | Urgency: Future |
| Expires: Sat, 12/13 6:30am | Severity: Unknown | Certainty: Possible |
Details:
ESFSEW Another moderately strong atmospheric river will impact western Washington starting as early as Saturday night and extending into Wednesday. Rain, heavy at times, is likely. The snow level will be 5000 feet rising to 8000 ft during the heaviest rainfall on Monday before dropping to 3000 to 4000 feet Monday night into Tuesday. In addition, soils will still be nearly saturated and rivers elevated or still above flood stage. Expect rising rivers with the potential for flooding. Urban flooding, landslides, and debris flows are also possible throughout this period. Please monitor the latest river forecasts from the National Weather Service for additional information. |
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