North Bay Mountains Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Fire Weather Warning
Issued: 3:27 AM PDT Sep. 25, 2018 – National Weather Service

... Red flag warning remains in effect until 5 PM PDT this
afternoon for low humidity and offshore winds for the North Bay

* affected area... the North Bay mountains. Fire weather zone 507
which includes all locations above 1000 feet in Napa, Sonoma
and Marin counties.

* Wind... northeast winds 5 to 15 mph with gusts 20 to 30 mph.

* Humidity... 9 to 19%.

* Highest threat... the hills of Napa and northeast Sonoma County
above 1000 feet.

* Impacts... any fires that develop will likely spread rapidly.

Precautionary/preparedness actions...

A red flag warning means that critical fire weather conditions
are either occurring now... or will shortly. A combination of
strong winds... low relative humidity... and warm temperatures can
contribute to extreme fire behavior.