Pineapple Express dumps 3.3 inches of rain on Renton; Monster Road reopens

About 3.3 inches of rain fell on Renton over the weekend, causing localized flooding and some road closures, courtesy of the Pineapple Express.

UPDATE TUESDAY, DEC. 14: Monster Road between 68th Avenue South and Martin Luther King Jr. Way was reopened mid-afternoon Tuesday. A landslide trigged by the heavy weekend rains had closed it.

About 3.3 inches of rain fell on Renton over the weekend, causing localized flooding and some road closures, courtesy of the Pineapple Express.

The flow of the Cedar River peaked at about 4 a.m. Monday morning at about 2,700 cubic feet per second, as measured in downtown Renton. The Cedar River Trail from Bronson Way to the Renton Senior Center is closed because of flooding.

The Cedar didn’t reach an initial flood stage, although it was putting on a pretty good show.

City officials were monitoring the weather and its affects all weekend.

Localized flooding closed Rainier Avenue for a time. The East Valley Highway also was closed in the 1900 to 4300 blocks.

A landslide has closed Jones Road Southeast because of a landslide at roughly 196th Avenue and State Route 169, according to the King County Department of Transportation.

Water also has overtopped roads on Renton Avenue in Skyway and in May Valley. A landslide closed 68th Avenue South Sunday afternoon between Martin Luther King Jr. Way and Beacon Coal Mine Road South.

On the Green River, the U.S. Army Corps of Engineers was keeping water flows in Auburn at or below 9,000 cubic feet per second, the trigger flow rate for a flood warning. Flows are expected to drop below the 9,000 cfs trigger flow around 1 p.m. Monday.

The reservoir is still nearly empty and capable of storing the forecast inflow amounts should additional storage be needed to keep downstream flows below flood stage, according to a corps press release.

The corps, in coordination with local officials, is sending levee walkers out along the Green River levees for a real-time assessment of levee conditions, although no problems are expected at this rate of flow, which is 3,000 cubic feet per second below the flood level on the lower Green River, according to the press release.

Rain remains in the forecast through the week. After a break Monday, the rain will return Monday night, mainly after 10 p.m., according to the National Weather Service forecast for Renton.

The temperatures will cool off with the passing of the warm wet air from the Pacific, with highs in the 40s and lows in the 30s.