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Heavy Rain in Lassen County, California
Heavy Rain July 25, 2019 · Lassen County, California
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
RAWS, 5 miles south-southeast of Ravendale (elevation 5450 feet) reported 0.87 inches of rainfall in a 2-hour period from 25 July 1559PST to 1759PST.
The wider storm
Moisture from the eastern Pacific Ocean and the Gulf of California moved northward around the periphery of high pressure centered over the Four-Corners region of the Rockies the 24th into the 25th. This moisture, coupled with the weak flow and increased instability in the lower to middle portions of the atmosphere, resulted in storms producing heavy rains.
Began near Crest (40.7312, -120.3166).
Source: NOAA Storm Events Database, event 849454. Narratives are written by the National Weather Service forecast office that issued the report.
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