Heavy Rain — Sierra, California

2018-10-03 to 2018-10-04 · near Sierraville Drwtr Ar, Sierra, California

Event narrative

Mesonet station RNYC1, 4 miles south-southeast of Sierraville (elevation 6943 feet) reported 1 inch of rainfall in a 26-hour period from 3 October 1130PST to 4 October 1330PST.

Wider weather episode

An upper low moved across California and western Nevada providing forcing for showers and thunderstorm across the region. The combination of a moist atmosphere, instability and diffluent forcing from the low allowed for isolated storms with localized heavy rainfall.

View location on OpenStreetMap → (39.5250, -120.3288)

Source: NOAA Storm Events Database, event_id 779170. Narrative written by the NWS forecast office that issued the report.