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Red Flag Warning


URGENT - FIRE WEATHER MESSAGE...CORRECTED
National Weather Service San Francisco CA
241 PM PDT Sun Sep 24 2017

...Red Flag Warning now in effect for the East Bay Hills and
the North Bay Hills through Wednesday afternoon...

.The warm and dry air mass the over the area will continue to
prevail through at least Wednesday. In addition, periods of
moderate and gusty mortheast winds are expected at times. Latest
model output indicates additional drying and some increase in the
offshore winds late Tuesday into Wednesday.

CAZ507-251400-
/O.EXT.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/
North Bay Mountains-
241 PM PDT Sun Sep 24 2017

...RED FLAG WARNING NOW IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW
HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507...

* AFFECTED AREA...Fire weather zone 507.

* 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 overnight...locally less than 30 percent.

* 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
gusty winds and low relative humidity can contribute to extreme
fire behavior.

&&

$$

URGENT - FIRE WEATHER MESSAGE...CORRECTED
National Weather Service San Francisco CA
241 PM PDT Sun Sep 24 2017

...Red Flag Warning now in effect for the East Bay Hills and
the North Bay Hills through Wednesday afternoon...

.The warm and dry air mass the over the area will continue to
prevail through at least Wednesday. In addition, periods of
moderate and gusty mortheast winds are expected at times. Latest
model output indicates additional drying and some increase in the
offshore winds late Tuesday into Wednesday.

CAZ511-251400-
/O.EXB.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/
East Bay Hills and the Diablo Range-
241 PM PDT Sun Sep 24 2017

...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW
HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511...

The National Weather Service in San Francisco has issued a Red
Flag Warning, which is in effect until 5 PM PDT Wednesday.

* AFFECTED AREA...Fire weather zone 511.

* WIND...Northeast Winds 10 to 15 mph...gusts 20 mph. Strongest
  overnight and morning hours.

* HUMIDITY...Lowering to around 15 percent afternoons with poor
  recovery overnight...locally less than 30 percent.

* HIGHEST THREAT...is located over the East Bay Hills above 1000
  ft where winds will be strongest. 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
gusty winds and low relative humidity can contribute to extreme
fire behavior.

&&

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
138 PM PDT Sun Sep 24 2017

...CRITICAL FIRE WEATHER CONDITIONS THROUGH EARLY TUESDAY
MORNING...

.Gusty northerly or offshore winds over the northern and western
Sacramento Valley and adjacent foothills will redevelop this
afternoon and expand southeastward late today across portions of
the Sierra Nevada through early Tuesday morning. The combination
of offshore winds and dry airmass are expected to bring critical
fire weather conditions.

CAZ213-215>218-263-264-266-279-251200-
/O.CON.KSTO.FW.W.0010.000000T0000Z-170926T1200Z/
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-Southeast Edge Shasta-
Trinity NF and Western Portions of Tehama-Glenn Unit-
Lake County Portion of Lake-Napa-Sonoma Unit-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-Eastern Mendocino NF-
138 PM PDT Sun Sep 24 2017

...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 10 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.

&&

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

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
138 PM PDT Sun Sep 24 2017

...CRITICAL FIRE WEATHER CONDITIONS THROUGH EARLY TUESDAY
MORNING...

.Gusty northerly or offshore winds over the northern and western
Sacramento Valley and adjacent foothills will redevelop this
afternoon and expand southeastward late today across portions of
the Sierra Nevada through early Tuesday morning. The combination
of offshore winds and dry airmass are expected to bring critical
fire weather conditions.

CAZ220-221-267>269-251200-
/O.CON.KSTO.FW.W.0010.170925T0000Z-170926T1200Z/
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Calaveras-Tuolumne Unit-Stanislaus NF West of the Sierra Crest-
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-
138 PM PDT Sun Sep 24 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO
5 AM PDT TUESDAY FOR FIRE WEATHER ZONES 220, 221, 267, 268, AND
269...

* WIND...Northeast winds 10 to 20 mph with gusts 20 to 25 mph
  over exposed ridges and stronger through aligned canyons.
  Strongest winds expected during overnight and morning hours.

* HUMIDITY...Daytime humidity of 12 to 25 percent with the main
  concern being 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.

&&

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

$$


Small Craft Advisory


URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
209 PM PDT SUN SEP 24 2017

PZZ570-250515-
/O.EXT.KMTR.SC.Y.0218.000000T0000Z-170926T2200Z/
POINT ARENA TO POINT REYES 10 TO 60 NM OFFSHORE-
209 PM PDT SUN SEP 24 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PDT TUESDAY...

* WINDS...NORTHWEST 20 TO 30 KT.

* SEAS...8 TO 10 FEET.

* WINDS AND WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR
  OUR MARINE PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP
  FOR MORE DETAILS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
AND/OR STEEP WAVES ARE EXPECTED TO PRODUCE HAZARDOUS WAVE
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
209 PM PDT SUN SEP 24 2017

PZZ571-250515-
/O.EXT.KMTR.SC.Y.0221.000000T0000Z-170926T2200Z/
POINT REYES TO PIGEON POINT 10 TO 60 NM OFFSHORE-
209 PM PDT SUN SEP 24 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PDT TUESDAY...

* WINDS...NORTHWEST 15 TO 25 KT WITH GUSTS UP TO 30 KT.

* SEAS...8 TO 10 FEET.

* WINDS AND WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR
  OUR MARINE PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP
  FOR MORE DETAILS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
AND/OR STEEP WAVES ARE EXPECTED TO PRODUCE HAZARDOUS WAVE
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
901 AM PDT SUN SEP 24 2017

PZZ470-475-250015-
/O.CON.KEKA.SC.Y.0095.000000T0000Z-170927T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
901 AM PDT SUN SEP 24 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT
WEDNESDAY...

* WINDS...N 20 TO 25 KT WITH ISOLATED GUSTS TO 35 KT THROUGH
  EARLY WEDNESDAY.

* WAVES...7 TO 9 FT AT 7 SECONDS TODAY. ELEVATED SEAS CONTINUING
  THROUGH EARLY WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

$$


Special Weather Statement


SPECIAL WEATHER STATEMENT
National Weather Service LOS ANGELES/OXNARD CA
257 PM PDT Sun Sep 24 2017

CAZ034>041-044>046-051>054-059-087-088-547>550-252200-
San Luis Obispo County Central Coast-
Santa Barbara County Central Coast-Santa Ynez Valley-
San Luis Obispo County Interior Valleys-Cuyama Valley-
Santa Barbara County South Coast-Ventura County Coast-
Los Angeles County Coast including Downtown Los Angeles-
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Monica Mountains Recreational Area-
San Luis Obispo County Mountains-Santa Barbara County Mountains-
Ventura County Mountains-
Los Angeles County Mountains excluding the Santa Monica Range-
Antelope Valley-Catalina and Santa Barbara Islands-
Santa Clarita Valley-Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
San Miguel and Santa Rosa Islands-Santa Cruz and Anacapa Islands-
257 PM PDT Sun Sep 24 2017

...Elevated Fire Danger through next weekend due to periods of
gusty offshore winds with very warm and dry conditions...

An extended period of weak to locally moderate offshore winds will
bring elevated fire weather concerns to much of Southwest
California through next weekend. Offshore winds are expected to
increase in areal coverage and intensity Monday through early
Wednesday, with gusts generally in the 30 to 40 mph range each
day across the mountains and valleys of Los Angeles and Ventura
counties. Isolated gusts up to 45 mph will be possible across wind
favored mountain locations. A brief period of offshore winds are
expected to surface Monday and Tuesday mornings across the
Ventura County coastal plain and from Malibu to the county line.

The increased offshore flow will continue to bring a warming and
drying trend to the region during the next few days. Temperatures
are expected to climb into the 90s Monday through Wednesday across
the valleys and portions of the coastal plain where offshore winds
surface. While the offshore flow weakens some late Wednesday into
Thursday, very warm and dry conditions will prevail away from the
coast. There is the potential for another ramp up in offshore
winds and even hotter temperatures next weekend, with warmest
valley locations possibly exceeding 100 degrees.

The combination of gusty offshore winds, very warm temperatures,
low humidities, and very dry fuels will bring elevated fire danger
to much of Southwest California through next weekend. Brief
critical fire weather conditions will be likely each day from
Monday through Wednesday, and possibly again next weekend. As a
result, there will be an increased risk for fire ignitions with
a threat for large fire growth and erratic fire behavior.
Residents of Southwest California are urged to take extra
precaution this week around sources of fire ignitions and
monitor for the latest forecast updates and possible Red Flag
Warnings.

$$

Gomberg/Munroe

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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