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Heat in East Bay Interior Valleys, California
Heat June 17, 2021 · East Bay Interior Valleys, California
What the National Weather Service wrote
Livermore station broke a daily record at 107 degrees previously 104 in 1961.
The wider storm
Strong high pressure over the Four Corners brought a hot and dry air mass to the Central Coast and Bay Area in mid June. Hot daytime temperatures for multiple days in the triple digits resulted in record breaking heat for the interior portion of the region. Higher elevation areas reported daytime highs in the 100s with overnight lows in the 70s and 80s. Several sites broke daily record highs on June 17th. The heat lasted into the start of that coming weekend and resulted in one fatality in San Jose. Additionally, persistent hot/dry conditions along with near record dry fuels allowed for the development of the Willow Fire in Monterey County.
Source: NOAA Storm Events Database, event 961455. Narratives are written by the National Weather Service forecast office that issued the report.
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