A strong upper-level ridge during the end of July and beginning August helped fuel a moist and unstable air mass over the region. The ridge broke down on the 1st of August and was overrun by two weak midlevel impulses on August 2nd. As the second impulse passed over Northeastern Washington and Northern Idaho strong storms developed.  Meanwhile, dewpoint depressions over Northern Idaho had spread between 40 and 50 degrees Fahrenheit. The rain and hail cooled outflow winds from storms over Northeastern Washington and North Idaho put out damaging outflow winds which moved northwest to southeast and gained momentum while tracking off the Selkirk Mountain Range.  Winds ranging between 50 and 70 miles per hour blew through Priest Lake, Sandpoint, Lake Pend Oreille, and Prichard.  Meanwhile, isolated thunderstorms were developing along a decaying outflow boundary tracking west to east across the Washington, Idaho border, each producing local tree damage.  Priest Lake, Sandpoint, and communities surrounding Lake Pend Oreille were the hardest hit areas.

Thunderstorm Wind in KOOTENAI, IDAHO
From 02-AUG-14 17:50:00 to 02-AUG-14 19:00:00 (PST-8)
Location: STATE LINE VLG
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Coeur D Alene Press reported that thunderstorms brought high winds and downed trees across portions of Post Falls, Hayden, Spirit Lake, and northern Coeur D'Alene.  The Stateline Speedway and several other businesses on Pleasant View Road lost power and were forced to cancel the Idaho 200 race.  The storm and strong winds also sparked a quick grass fire causing Love's Travel Center to evacuate.  The storm was also blamed for a house fire on Cimmaron Street in Post Falls and another one at Fir and 13th Street caused by downed power lines.

Thunderstorm Wind in SHOSHONE, IDAHO
From 02-AUG-14 19:15:00 to 02-AUG-14 19:45:00 (PST-8)
Location: KINGSTON
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were downed along Coeur D Alene River Road between mile posts twenty and twenty-eight.  Eighteen trees downed on Miller Way in Prichard ranging in height between 75 and 105 feet.

Thunderstorm Wind in BONNER, IDAHO
From 02-AUG-14 17:40:00 to 02-AUG-14 18:50:00 (PST-8)
Location: OUTLET BAY
Magnitude: 56.00 EG
Property damage: 2.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Widespread wind damage was observed across the cities of Priest Lake, Sandpoint, Ponderay, Kootenai, Oden, and Lake Pend Oreille.  Hundreds of trees ranging from eight to twenty two inches in diameter were snapped or downed.  Some trees landed on homes, others took out miles of power lines and poles.  At one point after the storm, all of Sandpoint, Idaho was without power.  A spotter in Clark Fork stated fifteen foot trees were almost touching the ground while sixty foot trees were bending at 45 degree angles.  The most widespread damage was along the Highway 200 corridor between Hope and Sandpoint.  The Elk Golf Course in this corridor lost thirteen trees.  The Sandpoint AWOS, also in this area, measured sustained winds of 40 mph with gusts to 56 mph before the power outage.  A roof of a storage shed was blown off in downtown Sandpoint.  Numerous boats and docks on Lake Pend Oreille were damaged from waves that ranged between three to six feet.  Significant tree damage was observed on the south side of the lake in Bottle Bay between the 3800th and 5016th blocks.  All trees were leaning to the east southeast.  Residents interviewed during a storm survey mentioned the winds lasted roughly 40 minutes.