Ongoing rainfall to dampen holiday, but worst is done

November 20, 2012

By Warren Kagarise

NEW — 6 a.m. Nov. 20, 2012

Expect continued rainfall through Thanksgiving, but not like the blustery, soggy conditions Monday.

Severe rainfall from a series of storms derailed the afternoon commute and raised flooding concerns on local waterways as more than 2 inches of rain soaked the Issaquah area. The storm caused power outages in Issaquah and Sammamish, and prompted Sammamish city officials to close Beaver Lake Preserve and Pine Lake Park due to high wind.

King County road crews spent Monday afternoon removing leaves and debris from storm drains and responding to problems. The state Department of Transportation warned motorists to prepare for waterlogged Thanksgiving travel and snow on the mountain passes.

National Weather Service meteorologists in Seattle forecast rain for Issaquah into next week, although not as bad as the Monday deluge.

The precipitation raises the prospect of localized flooding on city streets.

Issaquah residents can reduce street-flooding risk by clearing debris, such as fallen leaves and tree branches, from storm drains near homes. Call the municipal Public Works Operations Department at 837-3470 to address larger storm water issues.

City officials base Issaquah Creek flood warnings on real-time data from a gauge upstream from Issaquah in Hobart. The system usually provides hours of lead time before flooding impacts Issaquah. Officials also monitor a gauge at the creek mouth in Lake Sammamish State Park.

Officials briefly opened the King County Flood Warning Center on Monday night after rainfall caused the Snoqualmie River to swell.

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