A negatively tilted upper-level trough lifting through the Inland NW on the evening of March 25th through the morning hours of the 26th tapped into subtropical moisture resulting in moderate to heavy convective rainfall for central portions of the Idaho Panhandle.  The heaviest rain was observed across the Idaho Palouse, Lewis-Clark Valley, and Central Panhandle Mountains.  Twenty-four rainfall amounts across these locations ranged between three-quarters and one and a half inches.  Several days earlier, moderate to heavy snowfall fell across these same locations.  The combination of heavy rainfall and snow melt led to sharp rises and flooding along the Palouse River and its tributaries.  The most significant flooding occurred along Paradise Creek, within the city of Moscow, Idaho.

Flood in LATAH, IDAHO
From 26-MAR-12 06:20:00 to 27-MAR-12 12:30:00 (PST-8)
Location: MOSCOW
Flood cause: Heavy Rain / Snow Melt
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Employee

Moderate to major flooding occurred along Paradise Creek on the morning of March 26th flooding numerous streets, bridges, and homes within the city of Moscow, Idaho.  The creek crested at ten feet, making it the fourth highest crest on record.  Among the list of flooded streets, bridges, parks, and homes which were impacted from the flooding along Paradise Creek include: the intersection of Bridge and Hillcrest Streets, intersection at 5th and Roosevelt, D Street bridge, Main Street, Mountainview Park, the University of Idaho bike path, Blaine Street Bridge, South Lynn Street, and Sand Road.

Flood in LATAH, IDAHO
From 26-MAR-12 07:00:00 to 27-MAR-12 05:00:00 (PST-8)
Location: ONAWAY
Flood cause: Heavy Rain / Snow Melt
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The Red Cross North Central Disaster Response Team helped a family evacuate their Harvard home early March 26th due to flooding along the Palouse River and Gold Creek. The family had been fighting minor flooding for days but finally decided to evacuate their home when standing water began to fill the house.  The water was four inches deep in some spots.

Debris Flow in IDAHO PALOUSE, IDAHO
From 26-MAR-12 19:00:00 to 26-MAR-12 19:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy rain on the 26th combined with excess snow melt caused a small landslide along Cedar Ridge Road in Latah County.  There was no damage to the roadway or any structures however the Highway District estimated 30 thousand dollars to remove the slide material.

Heavy Rain in LATAH, IDAHO
From 26-MAR-12 06:00:00 to 26-MAR-12 20:00:00 (PST-8)
Location: JULIAETTA
Property damage: 13.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain and excess snow melt from the 25th through the 26th caused the Potlatch River to flow out of hits banks causing some damage to an Earthern Berm in the city of Kendrick.  The costs of equipment and material to repair the berm was 13 thousand dollars.

Flood in LATAH, IDAHO
From 26-MAR-12 06:00:00 to 27-MAR-12 11:00:00 (PST-8)
Location: CORNWALL
Flood cause: Heavy Rain / Snow Melt
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Department of Highways

The combination of heavy rain and snow melt caused several creeks and streams to flood causing minor damage to multiple roads between Genesee and Moscow.  The most significant damage occurred along Blaine, Eid, Danielson, Swenson, and Troy-Genesee Roads.  The South Latah Highway district estimated repair cost to these roads at 50 thousand dollars, primarily to procure, haul, and replace material to restore the roadways for safe travel.