Columbia storm history

A trained spotter 6 miles east of Dayton, WA reported that 2.5 inches of rainfall had fallen in less than an hour. This then led to runoff depositing mud and rock from an adjacent farm field, approximately 1 foot deep in some places, across Patit road. The flowing watr and mud al…

A social media report 14 miles NE of Dayton, WA indicated a thunderstorm produced hail up to the size of 1.25 inches at 12:45 am PDT on June 15th.

Trees and powerlines down in Dayton.

The North Fork and main Fork of the Touchet River as well as Coppei Creek and the Tuccanon River saw major flooding with numerous roads, bridges and home affected. 19 roads were closed, 21 bridges have moderate to severe damage, 144 homes were damaged and over 500 minor structure…

Trees and power lines down.

Trees and power lines down.

At Camp Wooten State Park, hail ranged from quarter sized up to ping pong ball and was accompanied by heavy rainfall.

Thunderstorm winds downed trees on power lines and at least one house.

Hail damaged window covers on truck.

Limbs were pulled off from a tree with the largest limb 4 inches in diameter.

Nickel sized hail with a few larger were observed with strong wind.

Dayton Middle School recorded a gust to 59 mph.

Numerous large tree limbs down. Shingles off roofs.

Up to two inches of rain fell in 45 minutes. Flooding was reported along Patit Creek. Water washed out nearby roads and mudslides covered some roads with as much as three inches of mud. 1/2 inch hail also fell.