Update: Flood Warning Center Closes as Water Level Subsides

Around 6:30 p.m., King County opened the Flood Warning Center due to a Phase II flood alert on the Snoqualmie River, with potential for water over a few roads. The center was closed later Monday evening.

Update: The King County Flood Warning Center closed at 10:30 p.m. on Monday, Nov. 19, following a brief four-hour opening to monitor minor flood conditions on the Snoqualmie River.

The Flood Warning Center opened at 6:30 p.m. Monday following a day of steady rainfall that brought the Snoqualmie River up to a Phase II flood alert level.


Original story: The King County Flood Warning Center opened at 6:30 p.m. on Monday, Nov. 19, after persistent heavy rainfall for much of the day brought the Snoqualmie River up to a Phase II flood alert level. Only minor flooding is expected.

As of 6:45 p.m., the sum of the Snoqualmie River’s three forks was 13,210 cubic feet per second (CFS), slightly higher than the Phase II flood alert threshold of 12,000 CFS. Typically, only minor flooding in low-lying areas would be expected along the Snoqualmie River at this flow, with the potential for water over just a few roads.

A Phase II flood alert level is the level of the County's four-phase warning system at which the Flood Warning Center activates to monitor conditions. The Flood Warning Center will remain open as long as flood conditions persist.

Flood Warning Center staff will monitor stream gages and weather reports, and will provide updated information on river conditions as necessary. Real-time river level information is available online at http://www.kingcounty.gov/flood.

King County offers everyone free access to KC Flood Alerts, an automated system that allows subscribers to receive customized alerts of potential flooding for any or all of King County’s six major river systems.

Immediate notifications about pending high water are sent to email, smart phone text or voicemail, providing subscribers with the maximum amount of warning about potential high water.

Find the KC Flood Alerts link at www.kingcounty.gov/flood. This website is a valuable preparedness resource, with all of the latest information about river levels and road conditions, plus weather reports and other critical links.

Updated information on flooding will also be posted on the King County website at www.kingcounty.gov, and via RPIN, the area's regional website at http://www.rpin.org. A recorded flood-information hotline is also updated each hour for citizens wanting information on flood conditions. The number is 206-296-8200 or 1-800-945-9263.

Citizens who need help interpreting flood information should call 206-296-4535 or 1-800-768-7932. Problems on County maintained roads can be reported by calling 206-296-8100 or 1-800-KC-ROADS.


The King County Flood Control District is a special purpose government created to provide funding and policy oversight for flood protection projects and programs in King County.  The Flood Control District’s Board is composed of the members of the King County Council. The Water and Land Resources Division of the King County Department of Natural Resources and Parks develops and implements the approved flood protection projects and programs. Information is available at http://www.kingcountyfloodcontrol.org/


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