Contra Costa County, California
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Contra Costa County, California
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Fire Weather Warning
CAZ507-511-512-517-518-161200-
/O.CON.KMTR.FW.W.0009.171216T0600Z-171217T1800Z/
North Bay Mountains-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
121 PM PST Fri Dec 15 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST SUNDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY...

* WIND...Northerly winds of 15 to 30 mph with local gusts over
50 mph. Strongest gusts will be over the North Bay Mountains
and East Bay Hills.

* HUMIDITY...Minimum humidity readings of 10 to 20% during the
day. Nighttime maximum humidity readings will likely recover
early in the night then drop of 25 to 35%.

* HIGHEST THREAT...Elevations above 1000 ft, especially the
North Bay Mountains and East Bay Hills.

* 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.

&&

$$
Wind Advisory
CAZ507-511-512-517-518-161200-
/O.CON.KMTR.WI.Y.0023.171216T0600Z-171217T1800Z/
North Bay Mountains-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Including the cities of Angwin, Lagunitas-Forest Knolls,
Woodacre, Blackhawk, Scotts Valley, Boulder Creek, and Day Valley
158 PM PST Fri Dec 15 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST SUNDAY...

a Wind Advisory remains in effect from 10 PM this evening to
10 AM PST Sunday.

* TIMING: 10 PM Friday to 10 AM Sunday

* LOCATION: elevations above 1,000 feet in the San Francisco and
Monterey Bay Region.

* WINDS: Northerly winds of 20 to 35 mph with local gusts over
50 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$
National Weather Service

Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
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