A trof of low pressure moved through Eastern Washington and Northern Idaho resulting in numerous thunderstorms.

Hail in CHELAN, WASHINGTON
From 29-MAY-15 15:07:00 to 29-MAY-15 15:17:00 (PST-8)
Location: CHELAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained weather spotter reported 1.0 inch hail denting cars in the Manson, Washington area which is approximately 3 miles west of Chelan, WA.

Thunderstorm Wind in SPOKANE, WASHINGTON
From 29-MAY-15 21:00:00 to 29-MAY-15 21:05:00 (PST-8)
Location: SPOKANE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Utility Company

Inland Power reported 400 homes without power associated with power-line damage from thunderstorms in Spokane, Washington.

Flash Flood in OKANOGAN, WASHINGTON
From 29-MAY-15 14:35:00 to 29-MAY-15 15:35:00 (PST-8)
Location: NIGHTHAWK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of water over Loomis-Oroville road. There were also reports of mud and debris covering the road in locations as well as possible washouts.

Hail in CHELAN, WASHINGTON
From 29-MAY-15 14:55:00 to 29-MAY-15 15:05:00 (PST-8)
Location: CHELAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 0.75 inch hail just south of Manson on Lake Chelan, WA.

Hail in CHELAN, WASHINGTON
From 29-MAY-15 15:00:00 to 29-MAY-15 15:05:00 (PST-8)
Location: CHELAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 0.75 inch hail near across Lake Chelan not too far from Manson, WA.

Hail in CHELAN, WASHINGTON
From 29-MAY-15 15:30:00 to 29-MAY-15 15:35:00 (PST-8)
Location: ENTIAT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Unknown

Report of 1.25 inch hail 22  miles northwest of Entiat, WA.

Heavy Rain in CHELAN, WASHINGTON
From 29-MAY-15 15:30:00 to 29-MAY-15 16:30:00 (PST-8)
Location: CHELAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Unknown

Heavy rain from thunderstorms washed debris out onto Wapato Lake Road near Mills Bay Casino  near Chelan, WA.

Hail in OKANOGAN, WASHINGTON
From 29-MAY-15 16:18:00 to 29-MAY-15 16:23:00 (PST-8)
Location: OKANOGAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 0.75 inch hail eight miles northwest of Okanogan, WA.

Heavy Rain in OKANOGAN, WASHINGTON
From 29-MAY-15 14:40:00 to 29-MAY-15 15:20:00 (PST-8)
Location: OMAK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A weather spotter reported heavy rain from a thunderstorm washed out a ditch and caused water to run over a driveway seven miles northwest of Omak, WA.

Thunderstorm Wind in SPOKANE, WASHINGTON
From 29-MAY-15 19:50:00 to 29-MAY-15 20:20:00 (PST-8)
Location: LYONS
Magnitude: 46.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee measured a 53 mph wind gusts at the NWS office near Airway Heights, WA.

Thunderstorm Wind in SPOKANE, WASHINGTON
From 29-MAY-15 20:18:00 to 29-MAY-15 20:30:00 (PST-8)
Location: SPOKANE
Magnitude: 43.00 EG
Property damage: 0.01K
Crop damage: 0.00K
Reported by: Trained Spotter

A weather spotter reported that a tree branch fell on a power line at 9 mile road and Francis. Branch size unknown.

Thunderstorm Wind in STEVENS, WASHINGTON
From 29-MAY-15 20:00:00 to 29-MAY-15 20:20:00 (PST-8)
Location: TUMTUM
Magnitude: 46.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Public

Public report of multiple trees down. The downed trees destroyed two parked cars in driveway of home. Tree also clipped and damage eave of roof. The time of damage was estimated based on radar.

Debris Flow in CHELAN, WASHINGTON
From 29-MAY-15 15:30:00 to 29-MAY-15 15:45:00 (PST-8)
Location: CHELAN FALLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter relayed police reports on a scanner of several small rock and mud slides on highway 150 between Manson, Washington and Chelan, Washington.

Thunderstorm Wind in SPOKANE, WASHINGTON
From 29-MAY-15 20:35:00 to 29-MAY-15 20:40:00 (PST-8)
Location: SPOKANE
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Utility Company

Avista power reported 1000 people without power associated with thunderstorm wind damage in Spokane, Washington.

Hail in STEVENS, WASHINGTON
From 29-MAY-15 18:53:00 to 29-MAY-15 18:58:00 (PST-8)
Location: ARDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An emergency manager reported numerous cars damaged when large hail and gusty thunderstorm wind occurred in Arden, Washington.

Heavy Rain in DOUGLAS, WASHINGTON
From 29-MAY-15 16:20:00 to 29-MAY-15 17:30:00 (PST-8)
Location: BRIDGEPORT
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A member of the public reported one inch of rain that fell quickly from a thunderstorm and caused some flooding of Bridgeport Middle School in Bridgeport, WA. Damage and debris left on roads in the vicinity of the school are what caused most of the damage costs.