Heavy Rain — Trinity, California

2022-12-29 to 2022-12-30 · near Helena, Trinity, California

Event narrative

Heavy rain caused a landslide across HWY 299 east of Helena.

Wider weather episode

Deep-layer westerly flow occurring along a zonally oriented quasi-stationary frontal boundary yielded a multi-day atmospheric river event across Northwest California during late December. Widespread impacts due to heavy rain and strong winds were observed across the region.

View location on OpenStreetMap → (40.7600, -123.1000)

Source: NOAA Storm Events Database, event_id 1068328. Narrative written by the NWS forecast office that issued the report.