Red Flag Warning 9, NWS Sacramento, CA

859 
WWUS86 KSTO 260348
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
848 PM PDT Fri Sep 25 2020

...Extreme Fire Weather Conditions Late Saturday Evening through 
Monday...

.Gusty northerly and easterly winds will develop over portions of
the Sacramento Valley, the northern Sierra and western foothills,
and the Coastal Range late Saturday evening through Monday. 
Daytime humidities will be extremely low in the single digits to 
teens with poor overnight humidity recoveries. 

The combination of wind, low humidity, and hot conditions will 
result in extreme fire weather conditions. This type of extreme 
fire weather condition only occurs a few times a year. These 
conditions may impact ongoing wildfires. Extreme caution should be
taken to prevent new fire starts.

CAZ213-215>221-263-266>269-279-270215-
/O.EXT.KSTO.FW.W.0009.200927T0400Z-200928T2100Z/
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-
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-
848 PM PDT Fri Sep 25 2020

...RED FLAG WARNING NOW IN EFFECT FROM 9 PM SATURDAY TO 2 PM PDT
MONDAY FOR GUSTY NORTH TO EAST WINDS AND LOW HUMIDITY FOR FIRE
WEATHER ZONES 213, 215, 216, 217, 218, 219, 220, 221, 263, 266,
267, 268, 269, AND 279...

* AFFECTED AREA...Portions of interior northern California 
  including the west side of the Sacramento Valley, the Coastal 
  Range, the western Sierra Nevada and foothills, and the Delta. 

* WIND...North to east winds 15 to 30 mph with gusts from 40 to 
  45 mph. Stronger gusts up to to 55 mph may be possible through 
  favored gaps and canyons. 

 Strongest winds expected Saturday night through Sunday, over the
 west side of the Sacramento Valley and Sunday night through 
 early Monday over the Sierra foothills.
  

* HUMIDITY...Minimum daytime humidity of 10 to 20 percent. Maximum
  overnight humidity between 15 and 40 percent.

* IMPACTS...Numerous wildfires are already occurring. Extreme
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided. 

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

$$

583 
WWUS86 KSTO 262130
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
230 PM PDT Sat Sep 26 2020

...Extreme Fire Weather Conditions Late Saturday Evening through
Monday...

.Gusty northerly and easterly winds will develop over portions of
the Sacramento Valley, the northern Sierra and western foothills,
and the Coastal Range today and continue through Monday. Daytime 
humidities will be extremely low in the single digits to teens 
with poor overnight humidity recoveries.

The combination of wind, low humidity, and hot conditions will
result in extreme fire weather conditions. This type of extreme
fire weather condition only occurs a few times a year. These
conditions may impact ongoing wildfires. Extreme caution should
be taken to prevent new fire starts.

CAZ213-215>221-263-266>269-279-271130-
/O.EXT.KSTO.FW.W.0009.200927T0400Z-200929T0400Z/
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-
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-
230 PM PDT Sat Sep 26 2020

...RED FLAG WARNING NOW IN EFFECT FROM 9 PM THIS EVENING TO 9 PM
PDT MONDAY FOR GUSTY NORTH TO EAST WINDS AND LOW HUMIDITY FOR 
FIRE WEATHER ZONES 213, 215, 216, 217, 218, 219, 220, 221, 263, 
266, 267, 268, 269, AND 279...

* AFFECTED AREA...Portions of interior northern California
  including the west side of the Sacramento Valley, the Coastal
  Range, the western Sierra Nevada and foothills, and the Delta.

* WIND...North to east winds 15 to 30 mph with gusts from 40 to 
  45 mph. Stronger gusts up to to 55 mph may be possible 
  through favored gaps and canyons.

 Strongest winds expected Saturday night through Sunday, over the
 west side of the Sacramento Valley and Sunday night through 
early Monday over the Sierra foothills.

* HUMIDITY...Minimum daytime humidity of 5 to 20 percent. Maximum
  overnight humidity between 15 and 40 percent. 

* IMPACTS...Numerous wildfires are already occurring. Extreme 
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided.

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

$$

939 
WWUS86 KSTO 270957
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
257 AM PDT Sun Sep 27 2020

...Extreme Fire Weather Conditions Late Saturday Evening through
Monday...

.Gusty northerly and easterly winds will continue to impact
portions of the Sacramento Valley, the northern Sierra and western
foothills, and the Coastal Range through Monday. Daytime 
humidities will be extremely low in the single digits to teens 
with poor overnight humidity recoveries. The combination of wind,
low humidity, and hot conditions will result in extreme fire 
weather conditions. This type of extreme fire weather conditions 
only occurs a few times a year. These conditions may impact 
ongoing wildfires. Extreme caution should be taken to prevent new 
fire starts.

CAZ213-215>221-263-266>269-279-280000-
/O.CON.KSTO.FW.W.0009.000000T0000Z-200929T0400Z/
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-
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-
257 AM PDT Sun Sep 27 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT MONDAY FOR 
GUSTY NORTH TO EAST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 
213, 215, 216, 217, 218, 219, 220, 221, 263, 266, 267, 268, 269, 
AND 279...

* AFFECTED AREA...Portions of interior northern California
  including the west side of the Sacramento Valley, the Coastal
  Range, the western Sierra Nevada and foothills, and the Delta.

* WIND...North to east winds 15 to 30 mph with gusts from 40 to 45
  mph. Stronger gusts up to to 55 mph may be possible through 
  favored gaps and canyons.

* HUMIDITY...Minimum daytime humidity of 5 to 20 percent. 
  Maximum overnight humidity between 15 and 40 percent. 

* IMPACTS...Numerous wildfires are already occurring. Extreme 
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided.

* ADDITIONAL DETAILS...Strongest winds expected Saturday night
  through Sunday over the west side of the Sacramento Valley, and
  Sunday night through early Monday over the Sierra foothills.

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

$$

430 
WWUS86 KSTO 272135
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
235 PM PDT Sun Sep 27 2020

...Extreme Fire Weather Conditions through Monday Evening...

.Gusty northerly and easterly winds will continue to impact
portions of the Sacramento Valley, the northern Sierra and
western foothills, and the Coastal Range through Monday. Daytime
humidities will be extremely low in the single digits to teens
with poor overnight humidity recoveries. The combination of wind,
low humidity, and hot conditions will result in extreme fire
weather conditions. This type of extreme fire weather conditions
only occurs a few times a year. These conditions may impact
ongoing wildfires. Extreme caution should be taken to prevent new
fire starts.

CAZ213-215>221-263-266>269-279-280545-
/O.CON.KSTO.FW.W.0009.000000T0000Z-200929T0400Z/
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-
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-
235 PM PDT Sun Sep 27 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT MONDAY FOR
GUSTY NORTH TO EAST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
213, 215, 216, 217, 218, 219, 220, 221, 263, 266, 267, 268, 269,
AND 279...

* AFFECTED AREA...Portions of interior northern California 
  including the west side of the Sacramento Valley, the Coastal 
  Range, the western Sierra Nevada and foothills, and the Delta. 

* WIND...North to east winds 15 to 30 mph with gusts from 40 to 45
  mph. Stronger gusts up to 65 mph may be possible through 
  favored gaps and canyons. 

* HUMIDITY...Minimum daytime humidity of 5 to 20 percent. 
  Maximum overnight humidity between 15 and 40 percent.

* IMPACTS...Numerous wildfires are already occurring. Extreme 
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided.

* ADDITIONAL DETAILS...Strongest winds are expected to be over the
  Sierra and adjacent foothills tonight and into tomorrow morning.

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

$$

953 
WWUS86 KSTO 280544
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
1044 PM PDT Sun Sep 27 2020

...Extreme Fire Weather Conditions through Monday Evening...

.Gusty northerly and easterly winds will continue to impact
portions of the Sacramento Valley, the northern Sierra and
western foothills, and the Coastal Range through Monday. Daytime
humidities will be extremely low in the single digits to teens
with poor overnight humidity recoveries. The combination of wind,
low humidity, and hot conditions will result in extreme fire
weather conditions. This type of extreme fire weather conditions
only occurs a few times a year. These conditions may impact
ongoing wildfires. Extreme caution should be taken to prevent new
fire starts.

CAZ213-215>221-263-266>269-279-281345-
/O.CON.KSTO.FW.W.0009.000000T0000Z-200929T0400Z/
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-
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-
1044 PM PDT Sun Sep 27 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT MONDAY FOR
GUSTY NORTH TO EAST WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
213, 215, 216, 217, 218, 219, 220, 221, 263, 266, 267, 268, 269,
AND 279...

* AFFECTED AREA...Portions of interior northern California 
  including the west side of the Sacramento Valley, the Coastal 
  Range, the western Sierra Nevada and foothills, and the Delta. 

* WIND...North to east winds 15 to 30 mph with gusts from 40 to
  45 mph. Stronger gusts up to 65 mph may be possible through 
  favored gaps and canyons.

* HUMIDITY...Minimum daytime humidity of 5 to 20 percent. 
  Maximum overnight humidity between 15 and 40 percent.

* IMPACTS...Numerous wildfires are already occurring. Extreme 
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided.

* ADDITIONAL DETAILS...Strongest winds are expected to be over
  the Sierra and adjacent foothills tonight and into tomorrow 
  morning.

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

$$

303 
WWUS86 KSTO 281030
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
330 AM PDT Mon Sep 28 2020

...Red Flag Warning Continues Through 9 PM PDT Tonight...

.Gusty north to east wind combined with low humidity will continue
critical fire weather conditions over much of interior Northern 
California today into tonight. Extreme caution should be taken to 
prevent new fire starts. Wind decreases in most areas by tonight,
with lighter wind expected through the rest of the week.

CAZ213-215>221-263-266>269-279-290000-
/O.CON.KSTO.FW.W.0009.000000T0000Z-200929T0400Z/
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-
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-
330 AM PDT Mon Sep 28 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 213, 215, 
216, 217, 218, 219, 220, 221, 263, 266, 267, 268, 269, AND 279...

* AFFECTED AREA...Fire weather zone 213, 215, 216, 217, 218, 219,
  220, 221, 263, 266, 267, 268, 269, and 279.

* WIND...North to east wind 15 to 30 mph with local gusts up to 
  45 mph. Stronger gusts up to 65 mph may be possible through 
  favored gaps and canyons.

* HUMIDITY...Minimum daytime humidity of 5 to 20 percent. 
  Maximum overnight humidity between 15 and 40 percent.

* IMPACTS...Numerous wildfires are already occurring. Extreme 
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided.

* ADDITIONAL DETAILS...Strongest wind expected over the Southern
  Cascades and Sierra Nevada, and adjacent foothills, and along
  the west side of the Sacramento Valley. Wind decreases in most
  areas this afternoon into evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong wind, 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

$$

716 
WWUS86 KSTO 282137
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
237 PM PDT Mon Sep 28 2020

...Red Flag Warning Continues Through 9 PM PDT Tonight...

.Gusty north to east wind combined with low humidity will
continue critical fire weather conditions over much of interior
Northern California today into tonight. Extreme caution should be
taken to prevent new fire starts. Wind decreases in most areas by
tonight, with lighter wind expected through the rest of the week.

CAZ213-215>221-263-266>269-279-290400-
/O.CON.KSTO.FW.W.0009.000000T0000Z-200929T0400Z/
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-
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-
237 PM PDT Mon Sep 28 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 213, 215, 
216, 217, 218, 219, 220, 221, 263, 266, 267, 268, 269, AND 279...

* AFFECTED AREA...Portions of interior northern California
  including the west side of the Sacramento Valley, the Coastal
  Range, the western Sierra Nevada and foothills, and the Delta. 

* WIND...North to east wind 15 to 30 mph with local gusts up to 45
  mph. Strongest gusts expected along favored canyons and gaps.

* HUMIDITY...Minimum daytime humidity of 5 to 20 percent. 
  Maximum overnight humidity between 15 and 40 percent.

* IMPACTS...Numerous wildfires are already occurring. Extreme 
  fire safety precautions should be exercised to prevent any 
  additional fires. Outdoor burning should be avoided.

* ADDITIONAL DETAILS...Strongest wind expected over the 
  Southern Cascades and Sierra Nevada, and adjacent foothills, 
  and along the west side of the Sacramento Valley. Wind 
  decreases in most areas this afternoon into evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong wind, 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

$$

690 
WWUS86 KSTO 290359
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
859 PM PDT Mon Sep 28 2020

CAZ213-215>221-263-266>269-279-290500-
/O.EXP.KSTO.FW.W.0009.000000T0000Z-200929T0400Z/
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-
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-
859 PM PDT Mon Sep 28 2020

...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR GUSTY
WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 213, 215, 216, 217, 
218, 219, 220, 221, 263, 266, 267, 268, 269, AND 279...

The winds have subsided therefore the Red Flag Warning has been
allowed to expire. Humidities will continue to be low with poor to
moderate nighttime recovery this week. Temperatures will also
remain well above seasonal normals.

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

$$

Area Forecast Discussion
National Weather Service Sacramento CA
201 AM PDT Fri Sep 25 2020

.SYNOPSIS...
Seasonable temperatures are forecast through the end of the work
week. Temperatures will warm over the weekend along with drier and
windier conditions, leading to fire weather concerns by Sunday.
Above normal temperatures will continue well into next week.

&&

.DISCUSSION...
Aside some passing high clouds in far northern California,
infrared satellite imagery reveals mostly clear skies for much of
the region on this early Friday morning. Temperatures are
generally running at or slightly cooler compared to this time 24
hours ago in response to the continued onshore flow -- winds at
Travis Air Force Base have been hovering around 20 mph for the
last several hours. One more day of zonal flow will keep
temperatures this afternoon within several degrees of late
September climatological normals (middle 80s to near 90 for the
Valley).

An upper level ridge offshore will build and shift east toward
the Golden State for the weekend and into early next week. This
will consequently result in a pronounced warming and drying trend
for the region. The wind will reverse from the present moist
onshore flow to a dry offshore north to east wind setup. While
there has been some model run-to-run inconsistencies over the past
few days; the most recent ensemble trends have bumped up,
particularly in the European ensembles. The latest official
forecast continues to show the strongest winds along the west side
of the Sacramento Valley as well as the favorable Sierra gaps and
canyons where gusts of 30 to 40 mph are quite conceivable on
Saturday night and into Sunday. Will be curious to see how winds
will trend with subsequent model runs. For now have decided to
keep the Fire Weather Watch in place, allowing for Friday
morning's fire weather collaboration calls to take place before
upgrading.

As mentioned, this ridge will promote warming throughout the
region. Widespread 90s will return to the Sacramento and northern
San Joaquin Valleys for Sunday and Monday, at a minimum. Can't
rule out the chance of some communities hitting 100 deg F.
Corresponding heat risks will be in the low to moderate categories
with general impacts to those sensitive to the heat. Models keep
the ridge in place into the middle of the week. More details are
provided in the extended portion of this discussion. // Rowe

&&

.EXTENDED DISCUSSION (Tuesday THROUGH Friday)...
A highly amplified ridge will bring warmer than normal
temperatures and dry weather to interior NorCal next week. High
temperatures will be anywhere from 8 to 15 degrees above average
next week with temperatures around 100 degrees possible in the
northern Sacramento Valley. Areas of moderate heat risk will be
seen throughout the week in portions of the Valley and foothills
which may impact any sensitive groups including outdoor workers.
Extremely dry conditions are expected each day, although winds
will be lighter through the week helping to mitigate fire weather
concerns. Dry weather is likely to continue through the weekend.

&&

.AVIATION...
Mainly VFR conditions for the next 24 hours with the exception of
local MVFR possible at RDD/RBL due to wildfire FU/HZ. Gusts up to
25 knots in the Delta vicinity with winds elsewhere generally
below 12 knots.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Fire Weather Watch from Saturday morning through Monday morning
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-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.

&&