Okanogan storm history

The "Thirtymile" wildfire was in the mop-up stages on July 10 when excessively hot and dry conditions that afternoon caused the smoldering fire to blow up. The fire came roaring back to life, quickly spreading from 25 to 2,500 acres in just three hours. The quickly-spreading fire…

The rise on Osoyoos Lake, which has no official Flood Stage, began to flood properties and seep into homes around the lake shore beginning on May 9th. By the morning of the 10th flood waters had submerged Deep Bay Park and were flooding the basements and threatening the first flo…

The USGS River Gage on the Okanogan River at Tonasket recorded a rise above the Flood Stage of 15.0 feet at 4:45 AM PST on May 5th. The river continued to rise, passing through the Moderate Flood Stage of 17.0 Feet at 11:45 PM on May 7th and through the Major Flood Stage of 18.0 …

Areal Flooding, mudslides and debris flows in rough terrain plagued Okanogan County during the month of April as a result of saturated soil conditions brought on by periodic heavy rain and spring snow melt. At least 24 roads through out the county were closed or damaged by washou…

The "Rocky Hull" wildfire, which was sparked by lightning several days earlier and fanned by gusty winds, destroyed thirty-three homes in the Mount Hull area. One man suffered a heart attack and died while trying to, according to a newspaper article, "help his fellow residents" a…

Thunderstorms with around golf ball-size hail, high wind and heavy rain caused approximately $25 million in damage throughout the county. Heavy rain also damaged part of the cherry crop.

Emergency Manager relays report that multiple trees are down in Oroville with damage to roof on at least one home. Oroville RAWS reported a gust of 55 MPH.

Large tree downed near Oroville High School. Oroville RAWS reported a gust of 55 MPH.

Multiple trees down and power poles snapped in the Wannacut Lake area. Oroville RAWS reported a gust of 55 MPH.

Several neighbors lost trees, one orchard had several lines of trees go over, and lost power and internet. Oroville RAWS reported a gust of 55 MPH.

Debris flow occurred on Davelaar Dr near Looney Creek as a result of heavy rain on the Cedar Creek burn scar. Time is estimated based on radar.

Multiple reports of flash flooding two miles Northwest of Winthrop. Mud and debris on road reports for West Chewuch Road, Highway 20, and Wright Road. Methow Valley Airport recorded 0.9 of an inch fell in an hour and half.

Slow moving thunderstorm over the Walker Creek Burn Scar near Bonaparte Lake Road brought a debris flow to the Lightning Creek area.

Gust front caused roof to blow off of airplane hangar, destroyed a vintage airplane, took out power, and started a small power line fire. Other reports in the county included a carport roof blown off in Oroville, two foot diameter tree blown down, and downed power lines.

Debris flow and flooding on lightning creek from walker creek burn scar from a thunderstorm rain event. Rain report of near an inch was received near Wauconda close to the area.

Buzzard Lake Road closed from a mudslide on Neville Ridge. No rainfall reports in the area. Increased snow melt and rain showers likely cause of debris flow.

Loup Loup Canyon road closed at rock lake road due to rocks and debris on the roadway. Raws located at 48.41361, -119.77361 did not record any precip.

The Weeman Bridge in Mazama had water running over top.

Broadway Street Bridge is closed due to water from North Fork Salmon Creek flowing over it. photos/videos from emergency manager. 5/4/23. Snow melt combined with near quarter of an inch of rain contributed to creek rise.

Bonaparte Lake Road is impassable at MP 2.1 due to roadway washout. Time of report is when noticed.

Lost Lake RAWS recorded wind gusts of 62 MPH.

Water was over roadway along the Riverside Eastriverside Road.

Peter Dan road closed after hillside sloughed onto road half a mile from Highway 155.

Heavy rain over the Cedar Creek Burn Scar caused a debris flow over Highway 20 near Mazama. Observations in the near the site in Mazama showed precip amounts half an inch in hour and three quarters of inch in 24 hours.

Thunderstorm recorded one inch hail. It formed South of Lake Omak around 1835PST and moved North toward Omak. It lasted until 1940PST. Time is estimated by radar. No damage or injuries reported.

Heavy rain induced landslide reported near Dead Horse Point on nf-5400. There were no observations directly in the in area. The observations in the general area showed amounts of half an inch.

A thunderstorm developed near Havillah and traveled Northeast into Canada. Public reported 1 inch hail near Chesaw, WA at 1730PST.

Evacuations ongoing along the north fork Salmon Creek road, with the bridge on north side of town overtopped with water. Several people are trapped in Kerr campground from flash flooding of the north fork of the Salmon river. North fork salmon creek road washed out in multiple lo…

Andrews creek flooded with water, mud, and debris covering west Chewuch road. people trapped near the Andrews creek trail area. Wolf creek road flooded with rocks, mud, and debris on the road. Goat creek road flooded with rocks and debris on the roadway. Doe creek out of its bank…

Hail reported in the Omak Flats area.

Pole pick mountain gauge recorded 1.18 of rain in one hour.

Leecher raws recorded 0.57 of rain in 2 hours.

Loup Loup rain gauge recorded 0.94 of rain in 2 hours.

Flash flooding reported near and north of Elmer City. Route 155 was closed near the Elmer City access road.

Downed pole and wires reported near state route 155.

Heavy rain over the Walker Creek Burn Scar created a debris flow. The radar estimated precipitation rates of 2-3.5 inches were observed close to the location of flash flooding on Bonaparte Lake Road. Three homes and several vehicles were damaged. Power outage lasted around 4 hour…

There was a minor flood on the Okanogan River with a majority of the flood impacts found north of Tonasket. In this area, the flood plain is wide and flood water is able to spread. This includes a lot of pasture land or swampy areas near the river. In Ellisforde, there was a farm…

The Similkameen River, near Nighthawk and Oroville, reached minor flood stage on November 16th. There were post-flood surveys completed that found several properties damaged due to flooding. The flood impacted pasture land, structures, and crops both upstream and downstream of th…

Heavy rainfall, with reports of 0.40 - 0.50 in one hour, occurred in the early evening hours of August 20th outside the town of Conconully. The brief heavy rainfall lead to 4 to 6 inches of debris flow on the roadway. Some local observation sites reported a total 0.75 - 1.25 of r…

A rock slide blocked both lanes of State Route 20 near mile post 166, two miles west of Cutthroat Creek Road. Heavy rain in the area lead to the slide and water over the roadway.

The US Forest Service reported a debris flow that blocked the NF-4440 Road, one mile east of the Gilbert Trailhead. The flow was approximately four feet deep and stranded two cars overnight. Time is estimated based on radar.

The Twisp River Road running through the Crescent Mountain Burn scar was cut by a debris flow after heavy overnight rain fell in the area.

The Harts Pass Road was cut by a debris flow after heavy overnight rain fell in the area.

The Aeneas RAWS station reported southwest winds of 37 mph sustained with a gust of 64 mph as a cold front passed through the region.

The Oroville RAWS station reported west winds of 17 mph sustained with a gust of 61 mph as a thunderstorm passed through during the morning of June 25th.

The Douglas Ingram Ridge RAWS station recorded a wind gust of 58 mph as thunderstorms moved through the area.

A tree was toppled onto a house in Twisp by a thunderstorm wind gust.

Numerous trees and power lines were toppled in the Mazama area due to thunderstorm wind gusts. At least 3 fires were reported to the emergency manager due to downed power lines in the Methow Valley.

A member of the public reported a tree on a home near Omak.