OAKLAND (CBS SF) — The National Weather Service has issued a Red Flag Warning from 10 p.m. Wednesday to 8 a.m. Friday for elevated portions of the Bay Area due to high fire danger from predicted gusty winds and low humidity.

The warning was initially issued for the North Bay mountains, East Bay hills, and East Bay interior valleys and the San Mateo coast has also been added, with winds from the mountains expected to accelerate as they mix down to the coast, especially from Half Moon Bay southward, officials said.

READ MORE: San Francisco Safeway Adds Barriers To Deter Rampant Shoplifting

The forecast calls for increasing north-northeasterly winds over the highest peaks and ridges with speeds of 10 to 25 mph and gusts up to 40 mph.

READ MORE: SF Supervisor Preston Proposes 10-Day Warning Period For Renters Facing Eviction

The warning means extreme caution should be used when operating barbecues, power equipment, or other heat sources such as idling cars, officials said, noting the likelihood of an accidental blaze spreading rapidly due to high winds and dry vegetation.

MORE NEWS: Redwood City Retail Theft Suspect Arrested; Stolen Home Depot Merchandise Recovered

© Copyright 2020 CBS Broadcasting Inc. and Bay City News Service. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.