Red Flag Warning 12, NWS Sacramento, CA

603 
WWUS86 KSTO 071100
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
400 AM PDT Sat Oct 7 2017

...Strong Winds and Low Humidity Sunday through early Tuesday...

.Gusty north to northeast wind is expected to begin across the 
Coastal Range, northern and western Central Valley Sunday and 
spread across the Sierra Nevada Sunday night. Combination of wind,
low afternoon humidity, and poor overnight recovery will bring a 
period of critical fire weather. New fire starts may spread 
rapidly during this time. 

CAZ213-215>219-263-264-266-279-080045-
/O.CON.KSTO.FW.W.0012.171008T1800Z-171010T1200Z/
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-
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-
400 AM PDT Sat Oct 7 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM
PDT TUESDAY FOR FIRE WEATHER ZONES 213, 215, 216, 217, 218, 219,
263, 264, 266, AND 279...

* WIND...North to northeast 15 to 25 mph with gusts to 45 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 15 percent.
  Overnight recovery values between 30 and 50 percent. 

* HIGHEST THREAT...Most critical areas...western Sacramento 
  Valley, adjacent foothills, and southern Lake County.

* 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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$$

CAZ220-221-267>269-080045-
/O.CON.KSTO.FW.W.0012.171009T0600Z-171010T1200Z/
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-
400 AM PDT Sat Oct 7 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM SUNDAY TO 5 AM
PDT TUESDAY FOR FIRE WEATHER ZONES 220, 221, 267, 268, AND 269...

* WIND...North to Northeast 15 to 30 mph with gusts to 40 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 20 
  percent. Overnight recovery values between 25 and 50 percent. 

* HIGHEST THREAT...Most critical areas of concern across 
  exposed ridges and through wind-aligned drainages during 
  overnight into morning hours.

* 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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$$

572 
WWUS86 KSTO 071645
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
945 AM PDT Sat Oct 7 2017

...Strong Winds and Low Humidity Sunday through Monday...

.Gusty north to northeast wind is expected to begin across the
Coastal Range, northern and western Central Valley Sunday and
spread across the Sierra Nevada Sunday night. Combination of
wind, low afternoon humidity, and poor overnight recovery will
bring a period of critical fire weather. New fire starts may
spread rapidly during this time.

CAZ213-215>219-263-264-266-279-081200-
/O.EXT.KSTO.FW.W.0012.171008T1800Z-171010T0000Z/
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-
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-
945 AM PDT Sat Oct 7 2017

...RED FLAG WARNING NOW IN EFFECT FROM 11 AM SUNDAY TO 5 PM PDT
MONDAY FOR FIRE WEATHER ZONES 213, 215, 216, 217, 218, 219, 263, 
264, 266, AND 279...

* WIND...North to northeast 15 to 25 mph with gusts to 45 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 15 
  percent. Overnight recovery values between 30 and 50 percent. 

* HIGHEST THREAT...Most critical areas...western Sacramento 
  Valley, adjacent foothills, and southern Lake County.

* 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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$$

CAZ220-221-267>269-081200-
/O.EXT.KSTO.FW.W.0012.171009T0600Z-171010T0000Z/
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-
945 AM PDT Sat Oct 7 2017

...RED FLAG WARNING NOW IN EFFECT FROM 11 PM SUNDAY TO 5 PM PDT
MONDAY FOR FIRE WEATHER ZONES 220, 221, 267, 268, AND 269...

* WIND...North to Northeast 15 to 30 mph with gusts to 40 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 20 
  percent. Overnight recovery values between 25 and 50 percent.

* HIGHEST THREAT...Most critical areas of concern across 
  exposed ridges and through wind-aligned drainages during 
  overnight into morning hours.

* 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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$$

097 
WWUS86 KSTO 081009
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
309 AM PDT Sun Oct 8 2017

...Strong Winds and Low Humidity Today through Monday...

.Gusty north to northeast wind is expected to begin across the
Coastal Range, northern and western Central Valley today and 
spread across the Sierra Nevada tonight. Combination of wind, low
afternoon humidity, and poor overnight recovery will bring a 
period of critical fire weather. New fire starts may spread 
rapidly during this time.

CAZ213-215>219-263-264-266-279-090000-
/O.CON.KSTO.FW.W.0012.171008T1800Z-171010T0000Z/
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-
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-
309 AM PDT Sun Oct 8 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
5 PM PDT MONDAY FOR FIRE WEATHER ZONES 213, 215, 216, 217, 218,
219, 263, 264, 266, AND 279...

* WIND...North to northeast 20 to 30 mph with gusts to 45 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 15 
  percent. Overnight recovery values between 30 and 50 percent.

* HIGHEST THREAT...Most critical areas...western Sacramento 
  Valley, adjacent foothills, and southern Lake County.

* 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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$$

CAZ220-221-267>269-090000-
/O.CON.KSTO.FW.W.0012.171009T0600Z-171010T0000Z/
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-
309 AM PDT Sun Oct 8 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
5 PM PDT MONDAY FOR FIRE WEATHER ZONES 220, 221, 267, 268, AND
269...

* WIND...North to Northeast 20 to 30 mph with gusts to 45 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 20 
  percent. Overnight recovery values between 25 and 50 percent.

* HIGHEST THREAT...Most critical areas of concern across 
  exposed ridges and through wind-aligned drainages during 
  overnight into morning hours.

* 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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$$

404 
WWUS86 KSTO 082103
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
203 PM PDT Sun Oct 8 2017

...Strong Winds and Low Humidity Today through Monday...

.Gusty north to northeast wind is expected to begin across the
Coastal Range, northern and western Central Valley today and
spread across the Sierra Nevada tonight. Combination of wind, low
afternoon humidity, and poor overnight recovery will bring a
period of critical fire weather. New fire starts may spread
rapidly during this time.

CAZ213-215>219-263-264-266-279-091200-
/O.CON.KSTO.FW.W.0012.000000T0000Z-171010T0000Z/
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-
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-
203 PM PDT Sun Oct 8 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT MONDAY FOR
FIRE WEATHER ZONES 213, 215, 216, 217, 218, 219, 263, 264, 266, 
AND 279...

* WIND...North to northeast 20 to 35 mph with gusts to 50 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 15 
  percent. Overnight recovery values between 30 and 50 percent.

* HIGHEST THREAT...Most critical areas...western Sacramento 
  Valley, adjacent foothills, and southern Lake County.

* 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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$$

CAZ220-221-267>269-091200-
/O.CON.KSTO.FW.W.0012.171009T0600Z-171010T0000Z/
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-
203 PM PDT Sun Oct 8 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
5 PM PDT MONDAY FOR FIRE WEATHER ZONES 220, 221, 267, 268, AND 
269...

* WIND...North to Northeast 20 to 40 mph with gusts to 55 mph.

* HUMIDITY...Daytime minimum humidity between 10 and 20 
  percent. Overnight recovery values between 25 and 50 percent.

* HIGHEST THREAT...Most critical areas of concern across 
  exposed ridges and through wind-aligned drainages during 
  overnight into morning hours.

* 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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www.twitter.com/nwssacramento

$$

328 
WWUS86 KSTO 090925
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
225 AM PDT Mon Oct 9 2017

...Strong Winds and Low Humidity Today...

.Gusty north to northeast wind and low humidity will continue
critical fire weather conditions over Interior Northern California
today. Wind expected to decrease this afternoon with lighter wind
tonight into Tuesday.

CAZ213-215>221-263-264-266>269-279-100000-
/O.CON.KSTO.FW.W.0012.000000T0000Z-171010T0000Z/
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-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Calaveras-Tuolumne Unit-Stanislaus NF West of the Sierra Crest-
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-
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-
225 AM PDT Mon Oct 9 2017

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

* WIND...North to Northeast 20 to 40 mph with gusts up to 55 mph.
  Wind decreasing in the afternoon.

* HUMIDITY...Overnight recoveries between 25 and 50 percent with
  Daytime minimum humidity between 7 and 19 percent. 

* HIGHEST THREAT...Most critical areas of concern across exposed
  ridges and through wind-aligned drainages.

* 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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www.twitter.com/nwssacramento

$$

062 
WWUS86 KSTO 092358
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
458 PM PDT Mon Oct 9 2017


CAZ213-215>221-263-264-266>269-279-100100-
/O.EXP.KSTO.FW.W.0012.000000T0000Z-171010T0000Z/
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-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Calaveras-Tuolumne Unit-Stanislaus NF West of the Sierra Crest-
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-
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-
458 PM PDT Mon Oct 9 2017

...RED FLAG WARNING WILL EXPIRE AT 5 PM PDT THIS AFTERNOON FOR
WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 213, 215, 216, 217,
218, 219, 220, 221, 263, 264, 266, 267, 268, 269, AND 279...

Winds have decreased this afternoon and the threat of rapid 
spread of new and existing wildfires has been significantly 
reduced. Therefore the Red Flag Warning has been allowed to 
expire. Northerly winds will return again on Wednesday but 
not as strong as this previous event. Breezy conditions at times 
and low humidities will bring the return of increased wildfire
danger through the remainder of the week.

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$$

Area Forecast Discussion
National Weather Service Sacramento CA
900 AM PDT Fri Oct 6 2017

.SYNOPSIS...
A little warmer than normal today and Saturday. Dry and a little
cooler with moderate to strong north winds early next week for
increased fire danger. Lighter winds and cooler temperatures for
the second half of next week.

&&

.DISCUSSION...
A couple of very nice days today and Sat over Norcal as the closed
low/upper trof moves from the Great Basin, across the Rockies and
into the Plains and modifies/warms the air mass. The warmest day
should be today over most locales as a weak cold front drops across
the Nrn zones on Sat bringing slight CAA (slight drop in thicknesses
and 850 mbs temps) to most of the CWA.

On Sun/Mon, developing low center currently over the GOA, near
Yakutat, forecast to dive SEwd into the Great Basin/Four Corners
area. This system will drive CAA Swd into Norcal for cooler temps
Sun/Mon along with very windy and dry conditions. The WR SA tool
reveals a high potential for another strong, gusty, offshore,
katabatic wind event developing Sun and into early next week. The
SLP (sea level pressure) anomaly for the STO domain peaks around 3
Sun afternoon into Mon morning. The model surface progs show a
12-14+ mbs MFR-SAC gradient from Sun morning into Mon morning. The
wind speed anomaly at 850 mbs peak at over a +4 anomaly during this
time as well. The data suggests this wind event will be stronger
than the most recent event earlier this week. A look at the NAM 925
mbs winds indicates a strong Nly Barrier Jet developing on Sun with
speeds of nearly 50 kts on the W side of the SAC Vly. This is
usually a good proxy for the wind gust potential. These katabatic
winds will elevate the min temps overnite, and provide a few degrees
of warming during the day due to adiabatic warming effects.
Gradients weaken Mon afternoon and winds should begin to subside
most areas.   JHM

.Previous Discussion...
High pressure aloft over the west coast bringing fair skies and a
little warmer temperatures this morning. Significant airmass warming
aided by light northerly surface winds will bring a significant warm
up today with highs climbing to between 5 and 10 degrees above
normal. A weak frontal system moving through the Pacific northwest
on Saturday will bring a slight cooling effect to the forecast area
mainly over areas from Sacramento northward. This system and its
associated upper trough will dig into the great basin on Sunday
allowing surface high pressure to build behind it over the Pacific
Northwest. By mid day Sunday, MFR to SAC surface gradient is
forecast to top 10 mb with northwest upper level flow bringing
moderate upper level support for breezy northerly winds. Cooler air
pushing into the area will bring down daytime highs down to near
normal but northerly winds will usher in drier air for decreasing
humidity. Combination of winds and low RH will bring increased fire
danger starting Sunday and a Fire Weather Watch remains in place
Sunday afternoon through Monday. Northerly surface gradient becomes
quite strong maxing out Sunday night with GFS and ECMWF models
showing a 15 mb MFR to SAC surface gradient. Could see wind gusts
along the the west side of the Sacramento valley topping 40 mph if
current models verify. Surface gradients and winds decrease slowly
during the day on Monday but remain breezy through the day and
overall airmass continues to dry. The northern Sacramento valley
could see minimum RH values drop into the single digits.
Temperatures warm slightly on Monday as high pressure slides over
the west coast.

&&

.EXTENDED DISCUSSION (Tuesday THROUGH Friday)

Pressure gradient will relax on Tuesday as broad troughing moves
into place over the region and remains there through the end of
the week. This will result in lighter winds. Valley highs will be
near the 80 degree mark with mid 50s to low 70s in the mountains.
Models hinting at the possibility at some precipitation skirting
through far northern portions of the state by Friday, but details
remain uncertain at this time. CEO
&&

.AVIATION...

VFR conditions persist with light winds under 10 kts at TAF
sites.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning Sunday late morning through late Monday night for
Carquinez Strait and Delta-Central Sacramento Valley in Glenn,
Colusa, Yuba, Northern Sutter, and Butte County Below 1000 Ft-
Eastern Mendocino NF-Eastern Portion of Shasta/Trinity NF-Lake
County Portion of Lake-Napa-Sonoma Unit-Northern Motherlode From
1000 to 3000 Ft. Includes portions of Nevada-Yuba-Placer-Amador and
ElDorado Units-Northern Sacramento Valley to Southern Tehama County
Line Below 1000 Ft-Northern San Joaquin Valley in San Joaquin and
Stanislaus Counties Below 1000 ft-Northern Sierra Foothills from
1000 to 3000 Ft. Includes portions of Shasta-Trinity and Butte 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-Southeast Edge Shasta-Trinity NF and Western Portions
of Tehama-Glenn Unit-Southern Motherlode From 1000 to 3000 Ft.
Includes portions of Calaveras-Tuolumne Unit-Southern Sacramento
Valley in Yolo-Sacramento Far Western Placer, southern Sutter and
Solano County Below 1000 Ft-Stanislaus NF West of the Sierra Crest.

&&