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URGENT - FIRE WEATHER MESSAGE
National Weather Service San Francisco CA
343 PM PDT Sat Sep 18 2021

...Gusty Offshore Winds and Drying Conditions Sunday Night
through Tuesday Morning...

.A rapid shift towards gusty offshore winds and drier conditions
will occur from Sunday night through Tuesday that will impact the
interior North and East Bay hills above 1000 feet. These drying
conditions and gusty offshore winds, in conjunction with near to
record dry fuels across the interior, will result in an increased
risk of critical fire weather concerns for the specified
locations that see little or no rain this weekend. Thus, this
weekend`s rainfall amounts will likely dictate upgrading this
watch to a red flag warning or not.

CAZ507-511-191200-
/O.CON.KMTR.FW.A.0005.210920T0600Z-210921T1800Z/
North Bay Mountains-East Bay Hills and the Diablo Range-
343 PM PDT Sat Sep 18 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH TUESDAY MORNING FOR GUSTY OFFSHORE WINDS FOR NORTH AND
EAST BAY MOUNTAIN ZONES 507 AND 511...

* AFFECTED AREA...Fire Weather Zone 507 North Bay Mountains and
  Fire Weather Zone 511 East Bay Hills and the Diablo Range.

* TIMING...11 PM Sunday night to 11 AM Tuesday morning. Initial
  burst of gusty offshore winds Sunday night to mid morning
  Monday. Drier conditions but lighter winds Monday daytime.
  Second shot of gusty offshore winds and drier conditions
  Monday night into Tuesday.

* WINDS...North to Northeast 15 to 25 mph with gusts 30 to 40 mph,
  locally up to 60 mph at the ridge tops. Weaker winds at lower
  elevations.

* RELATIVE HUMIDITY...Sunday night recoveries 40-60%. Monday
  minimum daytime humidities 10-20%. Monday night recoveries 25-
  40%.

* IMPACTS...Any fire starts would likely see rapid spread due to
  dry fuels, low humidity and gusty winds in areas that do not
  receive wetting rains over the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
215 PM PDT Sat Sep 18 2021

...Fire Weather Watch Sunday night into Tuesday morning for
portions of the Sacramento Valley and surrounding foothill and
mountain terrain...

.Gusty north to northeast winds will develop late Sunday night
across portions of the Sacramento Valley and surrounding terrain.
Strongest winds are expected Monday morning with them diminishing
during the afternoon Monday. Breezy east to northeast winds may
linger into Monday night across portions of the northern Sierra,
southern Cascade and adjacent Foothills. These winds, combined
with low humidity and extremely dry fuels, may lead to critical
fire weather conditions.

CAZ213-215>219-263-266>269-279-191200-
/O.CON.KSTO.FW.A.0008.210920T0600Z-210921T1800Z/
Eastern Portion of Shasta/Trinity NF-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-Carquinez Strait and Delta-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-Southeast Edge Shasta-
Trinity NF and Western Portions of Tehama-Glenn Unit-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
Northern Motherlode From 1000 to 3000 Ft. Includes portions of
Nevada-Yuba-Placer-Amador and ElDorado Units-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-
Northern Sierra Including the Tahoe and ElDorado NF/S West of the
Sierra Crest-Eastern Mendocino NF-
215 PM PDT Sat Sep 18 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH TUESDAY MORNING FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE
WEATHER ZONES 213, 215, 216, 217, 218, 219, 263, 266, 267, 268,
269, AND 279...

* AFFECTED AREA...Fire weather zones 213, 215, 216, 217, 218,
  219, 263, 266, 267, 268, 269 and 279 including portions of the
  Sacramento Valley and adjacent foothill and mountain terrain.
  This also includes portions of the Dixie and Caldor Fires.

* WIND...North to northeast wind gusts of 20 to 35 mph, locally
  higher will develop Sunday night into Tuesday morning.
  Strongest winds are expected along the western side of the
  Sacramento Valley and near favorably oriented canyons across the
  foothills and mountains.

* HUMIDITY...Minimum humidity in the teens to low 20s.
  Overnight recoveries 25 to 50 percent.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

Interact with us via social media
www.facebook.com/nws.sacramento
www.twitter.com/nwssacramento

$$

Urgent - Fire Weather Message
National Weather Service Eureka CA
212 PM PDT Sat Sep 18 2021

...Gusty Offshore Winds and Increasingly Dry Conditions Sunday
Night through Monday...

.An early autumn offshore flow event will impact portions of
interior northwest California beginning Sunday night and
continuing Monday.

Although substantial wetting rainfall is expected farther to the
north through tonight, rainfall amounts across southern and
eastern Lake County are expected to total less than a tenth of an
inch. As high pressure builds quickly in to the north Sunday night
into Monday, winds will shift from northwesterly to northeasterly
and become gusty, especially over exposed higher slopes and
ridges. This wind will bring in much drier air, followed by a
hotter and drier day on Monday. Some locally breezy conditions may
persist over the exposed ridgetops Monday night, but expect winds
will be lighter overall. However, humidity recoveries heading
into Tuesday morning will be much poorer.


CAZ264-190515-
/O.CON.KEKA.FW.A.0006.210920T0600Z-210921T0000Z/
Lake County Portion of Lake/Napa/Sonoma RU-
212 PM PDT Sat Sep 18 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY AFTERNOON...

* AFFECTED AREA...Fire weather zone 264.

* WIND...Northeast 10 to 20 mph. Gusts 30 to 40 mph over exposed
  ridgetops.

* HUMIDITY...Sunday night recoveries of 40 to 60 percent... lowest
  over ridgetops. Humidity in the teens on Monday afternoon.
  Recoveries Tuesday morning only in the 25 to 40 percent range.

* IMPACTS...Any fire starts will spread rapidly due to dry
  fuels, low humidity and gusty winds, in areas that do not
  receive much wetting rains over the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

$$


http://weather.gov/eureka

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Page last modified: June 2, 2009
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