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Excessive Heat through Sunday, Flex Alert Friday 4pm-9pm

Posted on July 9, 2021


Statewide Flex Alert Friday 4-9pm

Excessive Heat Warning and AdvisoryThe National Weather Service has issued an Excessive Heat Warning and Excessive Heat Advisory for parts of Sonoma County effective from 12:00 PM Friday, July 9th – 11:00 PM Sunday, July 11th.

  • Excessive Heat Advisory in effect for North Bay Interior Valleys
    • hot conditions with daytime temperatures of 95 to 107 expected
    • isolated locations may reach as high as 118
    • hottest temperatures expected in rural areas
  • Excessive Heat Warning in effect for North Bay Mountains
    • hot conditions with daytime temperatures of 102 to 110 expected
    • isolated locations may also reach as high as 118
    • hottest temperatures expected in the mountains of Sonoma County
  • Overnight temperatures will also remain very warm, mostly in the mid 70s, but to mid 80s in the higher elevations
As a result of the weather event, the California Independent System Operator’s (ISO) has issued a statewide Flex Alert Friday from 4 p.m. to 9 p.m. to avoid rotating power outages. CASIO is the organization that manages the state’s power grid. CASIO recommends energy users do the following:

Before a Flex Alert Begins:

  • Pre-cool your home
  • Use major appliances
  • Close window coverings

During a Flex Alert:

  • Set the thermostat to 78 degrees or more, if health permits
  • Avoid using major appliances
  • Turn off all unnecessary lights
  • Use fans for cooling
  • Unplug unused items

Visit FlexAlert.org for more energy conservation tips.

Stay informed about outages that affecting your service by viewing PG&E’s outage map. Visit CAISO’s web page for information about California’s electric grid and to view usage.
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