Weather Alerts for ChehalisIssued by the National Weather Service |
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CHEHALIS | ||
Areas Affected: West Slopes North Cascades and Passes - West Slopes North Central Cascades and Passes - West Slopes South Central Cascades and Passes |
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Effective: Fri, 12/1 4:00am | Updated: Fri, 12/1 4:00am | Urgency: Expected |
Expires: Sun, 12/3 4:00am | Severity: Moderate | Certainty: Likely |
Details:
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY ABOVE 2000 FEET... * WHAT...Heavy snow expected above 2000 feet. Total snow accumulations of up to 2 to 3 feet possible. * WHERE...Cascade mountains of Whatcom and Skagit Counties, including the Mount Baker Ski Area, the Cascade mountains of Snohomish and King Counties, including Stevens and Snoqualmie Pass, and the Cascade mountains of Pierce and Lewis Counties, including the Crystal Mountain Ski Area and Paradise on Mount Rainier. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult. Information: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. |
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CHEHALIS | ||
Areas Affected: Grays Harbor - Island - Jefferson - King - Kitsap - Lewis - Mason - Pierce - San Juan - Skagit - Snohomish - Whatcom |
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Effective: Thu, 11/30 9:35pm | Updated: Fri, 12/1 4:00am | Urgency: Future |
Expires: Fri, 12/1 5:15am | Severity: Moderate | Certainty: Possible |
Details:
.An active weather pattern will continue with a series of frontal systems set to move across the Pacific Northwest through the middle of next week bringing multiple rounds of rain and mountain snow with increasing intensity through the weekend and into next week. Current snow levels around 2700 feet this evening will rise closer to 6000 to 7000 feet by Sunday and then closer to 8000 to 9000 feet Monday evening as persistent atmospheric river moisture advects into the Western Washington. Prolonged heavy rainfall will lead to rapid rises on rivers Sunday into early next week, especially when combined with melting snow as snow levels most notably rise Sunday and Monday. Numerous rivers are currently forecast to go into flood stage, some from Moderate to near Major, starting with the Skokomish River in Mason County late Saturday then eastward with many of the Cascade Rivers by early next week. Excessive rainfall may also lead to isolated residential and/or urban flooding. ...FLOOD WATCH IN EFFECT FROM SATURDAY EVENING THROUGH LATE WEDNESDAY NIGHT... * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of northwest and west central Washington, including the following counties, in northwest Washington, Clallam, Grays Harbor, Island, Jefferson, Kitsap, Mason, San Juan, Skagit and Whatcom. In west central Washington, King, Lewis, Pierce, Snohomish and Thurston. * WHEN...From Saturday evening through late Wednesday 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. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Excessive rainfall from a long-duration atmospheric river event. Total rainfall forecast has increased with total liquid accumulation through Wednesday of next week ranging from 3 to 7 inches over the lowlands to upwards of 10 to 12 inches over the Cascades and 10 to 15 inches over the Olympics. - http://www.weather.gov/safety/flood Information: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. |
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CHEHALIS | ||
Areas Affected: Clallam - Grays Harbor - Island - Jefferson - King - Kitsap - Lewis - Mason - Pierce - San Juan - Skagit - Snohomish - Thurston - Whatcom |
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Effective: Thu, 11/30 9:35pm | Updated: Fri, 12/1 4:00am | Urgency: Future |
Expires: Fri, 12/1 5:15am | Severity: Unknown | Certainty: Possible |
Details:
...THREAT OF RIVER AND URBAN FLOODING SUNDAY INTO THE MIDDLE OF NEXT WEEK ACROSS WESTERN WASHINGTON... An active weather pattern will continue with a series of frontal systems set to move across the Pacific Northwest through the middle of next week bringing multiple rounds of rain and mountain snow with increasing intensity through the weekend and into next week. Current snow levels around 2500 feet this afternoon will rise closer to 6000 to 7000 feet by Sunday and then closer to 8000 to 9000 feet Monday evening as persistent atmospheric river moisture advects into the Western Washington. Total rainfall forecast has increased with total liquid accumulation through Wednesday from these systems ranging from 3 to 7 inches over the lowlands to upwards of 10 to 12 inches over the Cascades and 10 to 15 inches over the Olympics. This will lead to rapid rises on rivers Sunday into early next week, especially when combined with melting snow as snow levels most notably rise Sunday and Monday. Numerous rivers are currently forecast to go into flood stage, some from Moderate to near Major, starting with the Skokomish River in Mason County late Saturday then eastward with many of the Cascade Rivers by early next week. River flooding may lead to isolated residential and/or urban flooding. Widespread inundation of farmland and road closures are possible near rivers. Please monitor the latest river forecasts from the National Weather Service for additional information. |