Heavy Rain in Douglas County, Nevada
Heavy Rain August 4, 2022 · Douglas County, Nevada
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Trained weather spotter located 3.0 miles WSW of Gardnerville Ranch reported a total rainfall amount of 3.1 inches from 12:00 PM to 17:25 PM LST. Spotter also reported flooding issues along Foothill Road in the area.
The wider storm
A deep layer of monsoonal moisture pushed northwest and north into California, Sierra, and western Nevada in a southerly upper flow that marked the western margins of an area of strong high-pressure ridging into the Great Basin region. Thickening mid-level moisture coupled with steep afternoon lapse rates and warmer surface heating initiated deep columns of slow-moving moisture-laden showers and thunderstorms with torrential rains over the 2021 Tamarack burn scar. This resulted in widespread flash flooding and debris flows in Alpine County CA that created a number of impacts. Rainfall rates of 2.22 inches per hour were observed during the peak of the storm in Markleeville, CA which corresponds to at least a 500 year recurrence interval and possibly 1000 year, per NOAA 14 atlas.
Began near Centerville (38.8700, -119.8000).
Source: NOAA Storm Events Database, event 1051022. Narratives are written by the National Weather Service forecast office that issued the report.
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