Clear Lake/Southern Lake County Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Fire Weather Warning
Issued: 1:42 PM PDT Sep. 23, 2017 – National Weather Service

... Red flag warning remains in effect until 5 am PDT Tuesday for
fire weather zones 213, 215, 216, 217, 218, 263, 264, 266, and
279...

* wind... northerly winds 10 to 20 mph with gusts 25 to 30 mph
through the northern and western portions of the Sacramento
Valley and adjacent exposed foothill ridges. Strongest foothill
winds expected during overnight hours.

* Humidity... daytime humidity of 12 to 20 percent with minimal
humidity recovery overnight.

* Impacts... any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

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.


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249 am PDT Sat Sep 23 2017

... Red flag warning in effect from 2 PM this afternoon to 11 am
PDT Tuesday for low humidity and gusty winds for fire weather zone
507...

The National Weather Service in San Francisco has issued a red
flag warning, which is in effect from 2 PM this afternoon to
11 am PDT Tuesday. The Fire Weather Watch has been upgraded to the
warning.

* Affected area... fire weather zone 507. The North Bay hills
above 1000 feet in elevation.

* Wind... northeast winds 10 to 20 mph... gusts 25 mph. Strongest
overnight and morning hours.

* Humidity... lowering to around 15 percent afternoons with poor
recovery locally less than 30 percent overnight.

* Highest threat... is located over the Napa hills and around
Mount Saint Helena where winds will be strongest and humidity
lowest. Downed powerlines in remote areas will likely cause
new fire starts.

* Impacts... any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

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 and low relative humidity can contribute to extreme
fire behavior.