"While we have had many Red Flag Warnings this year, this event poses a greater threat. Hills residents should consider leaving before Sunday afternoon," the City of Berkeley advised on social media.
ACCUWEATHER FORECAST: Red Flag Warning, Wind Advisory issued for Bay Area Sunday
The city noted that several hotels in town are offering discount rates for those who choose to leave.
"We have activated our Emergency Operations Center and increased fire resources and police patrols in the hills," the city said.
Fallen trees in Berkeley should be reported to 311.
"A Fire/Forestry task force will be ready to rapidly respond to downed trees blocking evacuation routes," the city said.
PG&E POWER SHUTOFFS: Outages to begin in Bay Area Sunday afternoon as 361,000 estimated to lose power statewide
The Contra Costa Fire Protection District offered similar advice in a notice it circulated Sunday afternoon, saying, "County residents in areas susceptible to wildland fire may want to consider relocating ahead of this event."
Areas of particular concern include hillside portions of El Sobrante and San Pablo, Kensington, East Richmond Heights, the El Cerrito hills and the west hills of Richmond in West Contra Costa; and Martinez west of Berrellesa Street, and Lafayette north of state Highway 24 in Central Contra Costa.
HIGH FIRE HAZARD ZONES: @ContraCostaFire urged residents to be on high alert ahead of a projected high wind event and shared a map of fire hazard zones which are indicated in red. Details here: https://t.co/ZrUOUVGgqK pic.twitter.com/JOdxdcivZ9— ABC7 News (@abc7newsbayarea) October 26, 2020
The fire district advised that residents in living in areas considered very high fire hazard severity zones, in wildland-urban interface areas, or in areas with narrow streets or limited evacuation routes should be sure cell phones are fully charged and notifications are enabled; cars are parked facing out of driveways; alternate evacuation routes from home to a safe area are identified; and a plan is in place and people are ready to go as soon an official evacuation order is received.
VIDEO: How to prepare for a wildfire evacuation
Gusts of 40 to 60 mph are likely in some areas and in some peaks gusts may exceed 70 mph. Even 100 mph gusts are not out of the question.
The National Weather Service has warned that the peak period of concern will start about 6 p.m. Sunday through 7 to 10 a.m. Monday, "when winds will be strongest."
Coupled with the red flag warning are power shutoffs planned by PG&E for some 361,000 customers in Northern and Central California to reduce risk of equipment sparking a wildfire.
Several public parks in the East Bay hills will also be closed Sunday through Monday in anticipation of high winds, low humidity and dry vegetation that will combine to pose a significant fire risk, the East Bay Regional Parks District said.
WATCH: CAL FIRE, Bay Area braces for powerful winds, critical fire conditions this weekend
The closures include Anthony Chabot Regional Park, Claremont Canyon Regional Preserve, Huckleberry Botanic Regional Preserve, Kennedy Grove Regional Recreation Area, Lake Chabot Regional Park, Leona Canyon Open Space Regional Preserve, Reinhardt Redwood Regional Park, Roberts Regional Recreation Area, Sibley Volcanic Regional Preserve, Tilden Regional Park and Wildcat Canyon Regional Park.
High winds along with dry conditions "are expected to create the most dangerous fire weather Berkeley has seen so far this year," according to a warning posted Friday on the Berkeley city manager's web page.
Up-to-date information on the park closures can be found here.
Watch the latest AccuWeather forecast and take a look at recent WEATHER stories and videos.
Bay City News contributed to this report.