National Weather Service United States Department of Commerce







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August 1st

2017: Smoke From BC


August 2nd

2018: With low relative humidity and winds with gusts to 25 mph, a pair of new wildfires spread quickly on August 2nd.  The first new wildfire started along Interstate-90 between Kittitas and Vantage in Central Washington. The interstate was closed for a few hours due to the brush fire and no injuries were reported. The second wildfire was named the Angel Springs Fire, which started north of Davenport, WA. This fire destroyed one home and prompted evacuations in rural northern Lincoln county.

2014:Strong Winds and Hail

2013: Flash Flood & Debris Flows - Wenatchee

2004: A windstorm moved across northern Whitman, southern Spokane, and Kootenai counties. Winds were reported from 50-72 mph. 40-80% of the lentil crop in the area was destroyed. Several trees were blown down, damaging a home in Kootenai county. 2 people in Kootenai county were injured due to flying debris. A storm also passed through Newport, causing scattered power outages across the area. 50 mph winds caused the destruction of a shed in town. In Okanogan county, torrential rains caused mudslides, which closed Highway 20. A bridge was washed out north of Winthrop, and lightning was responsible for a dozen forest fires.

1998: Lightning sparks a large fire at Twenty-five Mile Creek on Lake Chelan. The fire would end up consuming over 6300 acres of forest and would last until October. It caused $80 million in damage to crops and a further $10 million to property.


August 3rd

1999: 4 fires began in Shoshone, Chelan, and Okanogan counties. Each fire lasted about a week before being extinguished. 

1994: Thunderstorm winds reached 55mph in Post Falls and Coeur d'Alene. Some minor damages reported. Lightning strikes started 100 fires in the Idaho Panhandle.

August 4th

2013: Flash Flood & Debris Flows - Wenatchee

2010: A thunderstorm produced very heavy rains, which led to a large mudslide onto Highway 97-A south of Entiat. This resulted in the road being closed for several hours between mileposts 206 and 210. The road itself was not damaged, but a nearby railroad track was damaged. A rain gauge in the area measured 0.90 inches of rain in one hour. The heavy rain occurred over the Swakane Fire burn area, which burned in July 2010.

2004: A thunderstorm brought 1.5 inch hail to Colfax, damaging a car.

August 5th

2003: Scattered thunderstorms over the east slopes of the Cascades produced gusty winds. The winds reached up to 44 mph at Monitor, where the winds damaged a roof.

August 6th

2010: 1.50 inch hail fell 6-7 miles east of Asotin.

2005: Pyrocumulus

1999: Lightning strikes two homes at Ruff in Grant county, igniting them.

1997: 61 mph gusts in Oroville and Ione. Trees were knocked down in Ione.

1991: A strong system moved over the eastern portion of Washington. 1 inch hail fell in Leavenworth and in Starbuck, damaging numerous crops. 1.50 inches of rain fell at Pomeroy, the most precipitation recorded in the city for an August day. 70mph winds were reported in Omak, and 60mph winds were recorded in the Deep Creek area west of Spokane. Heavy rain fell throughout, causing a 2-foot mudflow west of Wenatchee.

August 7th

1999: Heavy rain fell at Coeur d'Alene. 4-6 inches of rain fell overnight, causing some urban flooding. Manhole covers were blown off the roads, and some other roads were submerged. A boat sank due to the excess rainwater. 0.75 inch hail also fell in the city. 0.80 inches of rain fell in 10 minutes in Asotin. Lightning injured 6 people while they were out camping near Chelan.

August 8th

2008: Hail fell across Asotin and Whitman counties in Washington, and in portions of northern Idaho. 0.75 inch hail fell 4-7.5 miles south of Anatone, 4.7 miles northeast of Riparia, and 1.9 miles west of Melrose in Nez Perce county. 0.88 inch hail fell 1 mile southeast of Post Falls and at Asotin, and 1.00 inch hail fell 1.4 miles east of Sunset and 2.1 miles SSW of Balder. The hail caused extensive crop damage in Whitman county. Three hundred acres of wheat were destroyed as well as 30 percent of the Barley crop. Several four inch diameter tree limbs snapped as well. Heavy rain of 1.46" in 30 minutes also triggered a mudslide of three feet deep. Strong wind gusts of 50 to 60 mph were also observed in portions of Asotin county, downing several trees. A flash flood occured just west of Lake Wenatchee due to 2.12 inches of rain falling over 4 hours, with 1.18 of those inches falling in just 1 hour. Water was reported over White River Road two and a half miles west of Lake Wenatchee and over Highway two near Berne.

August 9th

2013: Debris Flow near Wenatchee

August 10th

2019: During the strong thunderstorms on August 10th and 11th, locally heavy rain moved over the William Flats Fire on the eastern portion of the Colville Indian Reservation. Large amounts of rain and flash flooding created hazardous road conditions on both days. Several roads washed out the fire southeast of Keller, WA. The two rounds of thunderstorms brought flash flooding and debris flow to much of Central Washington.

2006: Strong winds and large hail were reported through northern Idaho and parts of eastern Washington. 0.75 inch hail was reported at Cabinet, in Bonner county, and at Anatone. 0.88 inch hail fell at Coolin and Naples. 50 mph winds knocked down trees north of Coolin, at Bonners Ferry; one tree struck a car; at Clarkia; the winds there also tore sheet metal off a building; at Wardner and at Kellogg. Power outages were reported in the latter two cities. A billboard in Cataldo was damaged.

1991: Lightning ignited 10 forest fires and injured two people on Kalispell Island in Priest Lake.

August 11th

1994: Thunderstorm winds knock down several trees in Spokane County. Several thousands of dollars in damages were reported.

August 12th

2014: Dust Storm

2009: A pair of storms brought heavy rainfall near Lake Pend Oreille near Bayview, causing a storm drain to become overwhelmed, flooding Cape Horn Road. Along the road, a large amount of mud and debris spread across, making it mostly impassable.

2005: Dust Storm (more info here)

2001: Numerous cloud-to-ground lightning strikes ignite two large fires:  the "Virginia Lake Complex" of fires near Okanogan, and the "Rex Creek Complex" of fires northwest of Chelan. Both fires swelled out of control. The Virginia Lake Complex destroyed 9 homes and burned 74,109 acres of land before it was extinguished in early September. The Rex Creek Complex destroyed a home and over 50,000 acres of land before it was snuffed out in late September.

August 13th


August 14th

1994: Lightning strikes start 30 fires in Bonner County.

1993: Strong winds caused power outages in the town of Kamiah, 48 miles east of Lewiston.

August 15th


August 16th

2004: Heavy rains fell across Okanogan county, causing mudslides that closed several local roads. Lightning started several fires in the area.

2002: Strong winds took place across north-central and parts of northeastern Washington. The following is a listing of peak wind gust measured at various sites: Oroville RAWS...77 mph, Kramer RAWS (9 S Omak)...59 mph, Omak ASOS...55 mph, Kettle Falls RAWS...52 mph, Spring Canyon RAWS (near Grand Coulee Dam)...51 mph, Deer Mountain RAWS (4 N Ione)...51 mph, and Spokane International...40 mph(from the northwest). These winds caused millions of dollars worth of damage in Okanogan Valley. Many apples and pears either fell off their trees, remained on the tree but took damage regardless, or fell over with their parent tree. Many other trees in Okanogan county and Ferry county were blown over or uprooted. These trees also knocked over power lines in these counties, causing power outages and fires. The largest of these fires destroyed 193 acres of land and several residences south of Omak, before being extinguished on the 20th. Reports of fallen trees were also reported in Deer Park and Spokane. Even though the winds in Spokane were not as high, the winds came from the northwest, a direction from which the trees in the area were not used to receiving winds of that magnitude; they usually come from the southwest.

August 17th


August 18th

2008: A thunderstorm brought strong winds to eastern Washington and northern Idaho. 50 mph winds knocked down trees in Latah, Pend Oreille, Stevens, Spokane, Adams and Whitman counties. The most trees fell in Pullman, where six trees fell on roads, three trees fell on cars, and two power lines were downed. 60 people lost power. A tree fell on a man in Pend Oreille county 6 miles WNW of Diamond Lake, killing him. Lightning struck a tree at Pinehurst, causing it to collapse on top of a garage and truck. The Swanson Lake Fire, centered 17 miles west of Davenport, was a fire of unknown cause and burned 19,090 acres. The fire caused a brief closure of Highway two from Wilbur to Davenport. Smoke blowing across State Route 25 caused a temporary closure from Davenport north to the Columbia River. It was contained on the  26th, An unnamed fire was started by lightning in north Whitman County near Rock Lake, burning more than 2,200 acres. A heavy rain shower following the fire start slowed down the fire spread, but the fire was not contained until the 21st.

2006: The Ulm Peak Fire was started by lightning about 16 miles north of Pritchard. By the time it was contained on October 13, it burned 4200 acres of land. The Collins Tooth fire, centered southeast of Avery, burned 560 acres of land before it was extinguished on the 30th.

2004: A thunderstorm parked itself over Colville, causing heavy rains and flooding. 1 person reported that 2.5 inches of rain fell in 45 minutes. Official recordings total 1.90 inches of rain, a record for a day in August. Numerous buildings, including the jail, were flooded. Many trees were blown down, onto a car, a barn and onto power lines, causing 2000 people to lose power.

August 19th

2008: Heavy rain fell in the Methow Valley with mud and rock descending down the steep ridges on to Highway 20. Highway 20 was closed just past its junction with Highway 153. Nearby weather stations recorded near one inch of rainfall in three hours.

1998- Lightning sparked 25 fires near St. Joe, 20 fires near Rose Lake, and 3 fires near Hope.

August 20th

2010: Lightning sparks a large complex of fires south of Avery in rural Shoshone County. The Sawtooth, Needle, and Foehl fires burned 557 acres. They were contained by the 31st.

2009: Numerous lightning strikes ignite several fires in Grant County with the Grant County Board of Commissioners signing an emergency declaration to secure funding to suppress the fires. The Grant County Complex, which consisted of several fires around Soap Lake, burned 2,000 acres of sagebrush and grass land. About 15 fires were ignited from the lightning strikes throughout Grant County.

2008: Strong thunderstorm winds, up to 43 knots, led to minor damage in Moscow and Lewiston. Five reports of either trees blown down or debris in roadway was reported in Moscow. In Lewiston, downed power lines resulted in several small fires, with minor damage to one outbuilding. Around 160 customers lost power as well.

2006: The Long Canyon Fire and the Hughes Fire, both centered southwest of Porthill, ignited by lightning. They burned 200 and 4,288 acres, respectively, before being contained in September.

1993: Heavy rain washed out Rimrock Road, 2 miles southeast of Highway 2 in Douglas County. Some streets in east Wenatchee were also damaged by the flood.

August 21st

2017: Solar Eclipse

2014: Okanogan County & Methow Valley Flooding

2008: 1.00 inch hail fell at Dishman.

2002: 0.50 inches of rain fell in Wallace. Coupled with the 0.50 inches of rain that fell the night before, this caused some urban flooding. Many roads were submerged under several feet of water, and some cars were stalled due to the large puddles. Several buildings in the area suffered some water damage.

1999: Lightning strikes and ignites a house at Moses Lake.

1998: Lightning sparks over 40 fires near Curlew Lake and another south of Davenport. 0.5 inches of rain fall in 30 minutes northeast of Wauconda.

1992: 2.27 inches of rain fell in Potlatch. A dust storm, combined with 30mph winds, reduced visibility to zero throughout eastern Washington. The reduced visibility contributed to a car crash which killed a person and injured two others.

August 22nd

2017: Smoke From Oregon

August 23rd


August 24th

2000: A line of thunderstorms moved off a weather disturbance over northern Idaho and northeastern Washington. 0.75 inch hail fell northeast of Gifford, 1 inch hail fell southwest of Coolin, and 1.25 inch hail fell at Anatone. Strong winds blew down trees across Nez Perce county, specifically southwest of Lapwai and west of Lenore. A fallen tree blocked highway 12 for a time. The winds also stirred up dust in the area, reducing visibility. A dry microburst was recorded south of Wilbur. Winds gusted up to 60 mph. A barbeque was blown across a yard and some trees lost their branches.

August 25th

2013: Squall Line

1999: Strong winds blow down several trees on Lake Chelan. A boat was knocked loose.

August 26th

2010: Strong winds blew across central and eastern Washington. 40 mph gusts knocked down power lines and caused all of Stehekin to lose power. The winds caused significant blowing dust over the Waterville Plateau. The Department of Highways reported zero visibility on State Route 172 between mileposts 18 and 22 near Mansfield, resulting in a road closure. Combined with low relative humidities, the winds helped start and spread numerous fires around the state. The Slide Creek Fire, centered six miles south of Colville, burned 989 acres, two homes, and one outbuilding. The Fish Hatchery Fire, centered three miles north of Republic, burned 667 acres. Four miles south of Pullman, the Hatley Road Fire burned 50 acres and closed Highway 195 from milepost 15 to milepost 19. This fire came close to several homes. Another fire in Davenport led to the Lincoln County Fair briefly being evacuated. This fire also closed Highway 2. Another fire occurred six miles southwest of Davenport, burning 600 acres. The fire knocked out power to Davenport, destroyed one barn, closed Highway 28, and sporadically closed Highway 2. These fires were mostly contained by the 31st.

2004: Two airplanes were damaged and a hanger bay was blown down by 60 mph winds in Davenport.

1997: Thunderstorm conditions blow through central Washington. 58 mph gusts were reported in Waterville, 66 mph gusts reported in Brewster, and 72 mph gusts were reported in Douglas. Winds knocked down trees and killed the power in Wenatchee, Manson, Brewster and Leavenworth. Orchards were damaged in Dryden, Leavenworth and Brewster. A hanger at the Omak airport was destroyed, and 3 planes were severely damaged. An F0 briefly touched down in the area.

August 27th


August 28th

2011: Microbursts came out of thunderstorms travelling through the Idaho panhandle. One resulted in minor damage of the Eagle Point subdivision approximately four miles east of downtown Lewiston. A section of a sheet metal roof was lifted off a two-story shop, a boat trailer was pushed into the outbuilding denting the sheet metal, three two-inch diameter trees were snapped, a travel trailer was knocked down, and lawn objects became airborne breaking one window of a house. Another was thought to be responsible for snapping twenty consecutive power poles between the Setters substation and Highway 95 along Setters Road. It is inconclusive whether the initial wind gust snapped only a few poles or was the direct cause for damaging all the poles. It is speculated that a few poles broke in response to the microburst resulting in a domino effect to the remaining poles due to the absence of additional damage in the area. The Bell Plain Complex, located four miles northeast of Pomeroy, consisted of seven fires ignited by lightning. The fires burned 4002 acres of grassland along with some grain fields. The fires burned close to some homes forcing temporary evacuations. One spark landed on the roof of one house but it was quickly extinguished before any damage occurred. It was contained by the 31st.

2008: Spokane Airport records a record peak wind of 78 knots.

2005: 60 mph winds in the south central portions of the Okanogan Valley caused damage mainly to the town of Okanogan. A 6,000 pound cross was bent over along with some large trees downed. Some structures and roofs at the Okanogan Legion Airport were damaged as well by the high wind.

August 29th

2017: Camas Prairie Damaging Winds

August 30th

2002: Lightning struck a tree near Oldtown, which then arced to a nearby shed, electrocuting 2 workers. Both were briefly hospitalized.

August 31st

 2007: A severe thunderstorm brought strong winds to eastern Washington and northern Idaho. 1.00 inch hail fell at Spokane. 45 mph winds caused damage in Airway Heights and south of Spokane. A strong outflow boundary resulted in damage to trees and power lines in Whitman and Asotin counties. Damages were reported in Pullman, Palouse, Albion, and Clarkston from that boundary. Wind damage was also reported in the Coeur d'Alene area, as well as Kootenai and Sandpoint where several trees and power lines were blown down due to 50 mph winds.