A deep trough of low pressure dropped down the Washington Coastline then swung inland into the Inland Northwest during the afternoon of July 23rd. The wave took on a strong negative tilt and moved into a moist and very unstable air mass. The outcome was a widespread severe weather event for Eastern Washington and Northern Idaho producing large hail, flash flooding, and widespread wind damage. Falling trees led to some injuries in Eastern Washington.

Lightning in KOOTENAI, IDAHO
From 23-JUL-14 15:30:00 to 23-JUL-14 15:38:00 (PST-8)
Location: HAYDEN
Property damage: 4.50K
Crop damage: 0.00K
Reported by: Broadcast Media

Four cows and one calf were killed by a lightning strike in Hayden, ID.

Thunderstorm Wind in BOUNDARY, IDAHO
From 23-JUL-14 16:43:00 to 23-JUL-14 17:33:00 (PST-8)
Location: MC ARTHUR
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds ranging between 55 and 65 miles per hour knocked down numerous trees across central and eastern sections of Boundary County.  At least ten trees were knocked down in and around the city of Bonner Ferry.

Thunderstorm Wind in BONNER, IDAHO
From 23-JUL-14 15:53:00 to 23-JUL-14 16:45:00 (PST-8)
Location: LAKEVIEW
Magnitude: 65.00 MG
Property damage: 2.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Damaging winds led to widespread tree damage across central Bonner County.  A navy bouy located on the south end of Lake Pend Oreille clocked a wind gust of 75 mph.  Multiple trees were knocked down across the city of Sandpoint and smaller communities surrounding Lake Pend Oreille.  Many roads were closed until trees and power lines were removed including Highway 95 near the intersection of McArthur Street.  Power was out for the entire city of Sandpoint and majority of Bonner County directly following the storm.  Several trees fell on houses.  Southern exposed bays on Lake Pend Oreille experienced the worst damage.  Over thirty trees were knocked down between Gamlin Lake and Garfield Bay.  Two people were injured by a falling tree at Green Bay.  Further north on the lake, roughly twenty trees were downed in Shaw Bay.  On a ridge, known as Hawkins Point, over fifty trees were snapped four feet from the ground.  The winds created three to six foot waves in sections of the lake resulting in dock and boat damage.  Broadcast media also reported numerous trees downed at the Western Pleasure Guest Ranch located eleven miles northeast of Ponderay.

Thunderstorm Wind in LATAH, IDAHO
From 23-JUL-14 14:30:00 to 23-JUL-14 15:00:00 (PST-8)
Location: KENNEDY FORD
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spruce and locus tree were destroyed around a farm house.  Two roofs on farm buildings lost tin.  Tree limbs four inches in diameter were broken off into four foot chunks and flew 100 feet.  Fifty to sixty foot spruce trees with six inch diameter trunks had twenty feet of their tops taken off.

Hail in LATAH, IDAHO
From 23-JUL-14 15:10:00 to 23-JUL-14 15:20:00 (PST-8)
Location: MOSCOW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail to the size of quarters covered the ground.

Hail in KOOTENAI, IDAHO
From 23-JUL-14 15:15:00 to 23-JUL-14 15:53:00 (PST-8)
Location: CONKLING PARK
Magnitude: 1.00 
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Public

One inch hail was observed at Conkling Park on Lake Coeur D Alene.  As the storm tracked into northern sections of Kootenai County, strong outflow winds became the main threat resulting in a corridor of tree damage from Coeur D Alene to Althol.  The strongest winds surfaced near Althol and knocked down multiple trees in the RV park across the street from Silverwood Theme Park.  One person suffered a minor injury in the RV Park.  Trees damaged campers, flipped tents, and knocked over smaller campers.

Hail in BENEWAH, IDAHO
From 23-JUL-14 15:01:00 to 23-JUL-14 15:33:00 (PST-8)
Location: SANDERS
Magnitude: 1.25 
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A splitting supercell thunderstorm tracked southwest to northeast through Benewah county.  The right mover produced hail ranging from a quarter to half dollar over southwestern reaches of the county.  This included the community of Santa.  The left moving cell produced nickel to quarter size hail across northwestern reaches of the county including Chatcolet Lake.

Thunderstorm Wind in NEZ PERCE, IDAHO
From 23-JUL-14 15:30:00 to 23-JUL-14 16:10:00 (PST-8)
Location: EAST LEWISTON
Magnitude: 52.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

Weak thunderstorms passing through the area in the wake of two supercell thunderstorms brought strong winds along the Snake River Valley and Lewiston, Clarkston Area.  Several small trees were blown down in Clarkston taking down power lines and damaging a residential fence.  The storm also brought down scattered trees and limbs across Lewiston causing power outages and minor damage.

Hail in SHOSHONE, IDAHO
From 23-JUL-14 15:20:00 to 23-JUL-14 16:10:00 (PST-8)
Location: CALDER
Magnitude: 1.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

A storm producing damaging winds and quarter size hail tracked through northern reaches of Shoshone County crossing Interstate 90 between Pinehurst and Kellogg.  Numerous cars at a car lot were dented from the large hail.  Trees and powerlines were knocked down in Cataldo and along Coeur D Alene Road.