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Frost/Freeze in San Joaquin Confluence, California
Frost/Freeze February 4, 2020 · San Joaquin Confluence, California
What the National Weather Service wrote
Several locations reported minimum temperatures between 26 and 31 degrees.
The wider storm
With a cold and dry airmass in place over the San Joaquin Valley, clear skies and diminished winds allowed for strong radiational cooling to take place during the morning of February 4; and as a result temperatures dropped below the freezing mark for 6-8 hours across much of the San Joaquin Valley. This turned out to be the first killing freeze of the season for most of the San Joaquin Valley.
Source: NOAA Storm Events Database, event 867449. Narratives are written by the National Weather Service forecast office that issued the report.
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