Calistoga Joint Unified School District said in a Facebook post that because the power outage will affect most of the city they have decided to cancel classes on Monday, Oct. 15.
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Kelseyville, Konocti, Lakeport and Middletown school districts in Lake County have also decided to cancel classes on Monday.
Officials said schools in the Upper Lake and Lucerne districts are remaining open.
PG&E said because of extreme fire danger conditions they decided to make this unprecedented move and turn off the power to several counties.