Flood in Latah County, Idaho
Flood April 1, 2012 · Latah County, Idaho
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
There was extensive flooding of the low lying areas west of Potlatch. South River Road was flooded where it crosses the Palouse River at Wellesley Road.
The wider storm
A stagnant long wave pattern featuring a broad trough off the Pacific Northwest Coast and upper-level ridge over the central United States resulted in a parade of moist storm systems tracking through the Inland Northwest culminating on April 1st. An extended period of wet weather and low to mid elevation snowmelt through the final week of March resulted in high water levels on rivers and lakes in the Coeur d'Alene, St. Joe and Palouse River Basins. Daily rainfall accumulations ranged between a quarter to just over a half an inch for the week leading up to April 1st aside from March 28th. This concluded record setting precipitation totals for the month of March.
Began near Kennedy Ford (46.9131, -117.0389).
Source: NOAA Storm Events Database, event 375177. Narratives are written by the National Weather Service forecast office that issued the report.
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