Red Flag Warning 5, NWS Sacramento, CA

715 
WWUS86 KSTO 041030
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
330 AM PDT Wed Aug 4 2021

...Red Flag Warning For Gusty Wind and Very Low Humidity Over
Northern Districts This Afternoon Into Early Thursday Evening...

.Gusty wind, very low humidity, and extremely dry fuels combine to 
bring critical fire weather conditions over the Northern 
Sacramento Valley and Western Shasta mountains this afternoon 
into tonight, and in the northeast foothills and mountains of 
eastern Shasta and Western Plumas counties through early Thursday 
evening.

CAZ266-268-042300-
/O.CON.KSTO.FW.W.0005.210804T2000Z-210806T0300Z/
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)-
330 AM PDT Wed Aug 4 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THURSDAY FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 266 AND 268...

* AFFECTED AREA...Fire weather zone 266 and 268.

* WIND...Southwest 10 to 20 mph with local gusts up to 35 mph.
  Strongest wind expected afternoons into evenings. Wind shifts 
  to the west northwest late day Thursday.

* HUMIDITY...Minimum humidity in the single digits to mid teens.
  Overnight humidity recoveries 20 to 45 percent

* 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
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$$

CAZ213>215-042300-
/O.CON.KSTO.FW.W.0005.210804T2000Z-210805T0500Z/
Eastern Portion of Shasta/Trinity NF-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
330 AM PDT Wed Aug 4 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
10 PM PDT THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 213, 214, AND 215...

* AFFECTED AREA...Fire weather zone 213, 214, and 215.
 
* WIND...South 10 to 20 mph with local gusts up to 30 mph.
  Strongest wind expected late afternoon and early evening.

* HUMIDITY...Minimum humidity in the single digits to mid teens.

* 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
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www.twitter.com/nwssacramento

$$

848 
WWUS86 KSTO 041708
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
1008 AM PDT Wed Aug 4 2021

...Red Flag Warning for Gusty Wind and Very Low Humidity this 
Afternoon through Thursday Evening...

.Gusty wind, very low humidity, and extremely dry fuels combine
to bring critical fire weather conditions over the Northern and
Central Sacramento Valley and Coastal Range mountains this 
afternoon into tonight as well as in the northeast foothills and 
mountains of eastern Shasta and Western Plumas counties and the
Northern Sierra Nevada this afternoon through Thursday evening. 
Winds in the northern Sacramento Valley peak Wednesday afternoon 
and early evening. Relative humidity levels gradually increase 
over low elevations on Thursday, with higher elevations remaining
dry and winds increasing again in the afternoon into the evening.

CAZ221-269-051600-
/O.EXB.KSTO.FW.W.0005.210804T2000Z-210806T0400Z/
Stanislaus NF West of the Sierra Crest-
Northern Sierra Including the Tahoe and ElDorado NF/S West of the
Sierra Crest-
1008 AM PDT Wed Aug 4 2021

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM
PDT THURSDAY FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER 
ZONES 221 AND 269...

The National Weather Service in Sacramento has issued a Red Flag
Warning, which is in effect from 1 PM this afternoon to 9 PM PDT
Thursday. 

* AFFECTED AREA...Western slope of the Northern Sierra Nevada.

* WIND...South 10 to 20 mph with local gusts up to 35 mph, locally
  higher. Strongest wind expected late afternoon and early 
  evening.

* HUMIDITY...Minimum humidity in the single digits to mid teens.
  Overnight humidity recoveries 20 to 45 percent.

* 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
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$$

CAZ216-263-279-050500-
/O.EXA.KSTO.FW.W.0005.210804T2000Z-210805T0500Z/
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-Southeast Edge Shasta-
Trinity NF and Western Portions of Tehama-Glenn Unit-
Eastern Mendocino NF-
1008 AM PDT Wed Aug 4 2021

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 PM
PDT THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER
ZONES 216, 263, AND 279...

The National Weather Service in Sacramento has issued a Red Flag
Warning, which is in effect from 1 PM this afternoon to 10 PM PDT
this evening. 

* AFFECTED AREA...Coastal Range and associated foothills and
  Central Sacramento Valley.

* WIND...South 10 to 20 mph with local gusts up to 30 mph. 
  Strongest wind expected late afternoon and early evening. Winds 
  shift to the west northwest late day Thursday.

* HUMIDITY...Minimum humidity in the single digits to mid teens.

* 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
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www.twitter.com/nwssacramento

$$

CAZ214-266-268-051600-
/O.EXT.KSTO.FW.W.0005.210804T2000Z-210806T0400Z/
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
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)-
1008 AM PDT Wed Aug 4 2021

...RED FLAG WARNING NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO
9 PM PDT THURSDAY FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 214, 266, AND 268...

* AFFECTED AREA...The Burney Basin, northeast foothills, Lassen 
  National Park, and mountains of western Plumas County and of 
  eastern Shasta County.

* WIND...Southwest 10 to 20 mph with local gusts up to 35 mph,
  locally higher. Strongest wind expected afternoons into 
  evenings. Wind shifts to the west northwest late day Thursday.

* HUMIDITY...Minimum humidity in the single digits to mid teens.
  Overnight humidity recoveries 20 to 45 percent.

* 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

$$

CAZ213-215-050500-
/O.CON.KSTO.FW.W.0005.210804T2000Z-210805T0500Z/
Eastern Portion of Shasta/Trinity NF-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
1008 AM PDT Wed Aug 4 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
10 PM PDT THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 213 AND 215...

* AFFECTED AREA...Northern Sacramento Valley and mountains of
  northern Shasta County.

* WIND...South 10 to 20 mph with local gusts up to 30 mph. 
  Strongest wind expected late afternoon and early evening.

* HUMIDITY...Minimum humidity in the single digits to mid teens.

* 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

$$

083 
WWUS86 KSTO 050508
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
1008 PM PDT Wed Aug 4 2021

...Red Flag Warning for Gusty Wind and Very Low Humidity this
Afternoon through Thursday Evening...

.Low pressure area moving through the region on Thursday will 
bring shifting gusty winds, very low humidity, and extremely dry 
fuels combine to bring critical fire weather conditions over the 
Northern and Central Sacramento Valley, Coastal Range mountains 
tonight as well as in the northeast foothills and mountains of 
eastern Shasta and Western Plumas counties and the Northern Sierra
Nevada through Thursday evening. Relative humidity levels 
gradually increase over low elevations on Thursday, with higher 
elevations remaining dry and winds increasing again during the day
before becoming lighter in the evening.

CAZ213-215-216-263-279-050615-
/O.EXP.KSTO.FW.W.0005.000000T0000Z-210805T0500Z/
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-Southeast Edge Shasta-
Trinity NF and Western Portions of Tehama-Glenn Unit-
Eastern Mendocino NF-
1008 PM PDT Wed Aug 4 2021


...RED FLAG WARNING HAS BEEN EXTENDED UNTIL 9 PM PDT THURSDAY FOR
GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 216, 263, AND 
279...

* AFFECTED AREA...Coastal Range and associated foothills and
  Central and Northern Sacramento Valley.

* WIND...Southeast to south 5 to 15 mph with local gusts 15 to 25
  mph. Strongest wind expected afternoons into evenings. Wind 
  shifts to the west northwest late day Thursday.

* HUMIDITY...Minimum humidity in the single digits to mid teens.
  Overnight humidity recoveries 25 to 45 percent. 

* 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
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$$

CAZ214-221-266-268-269-051315-
/O.CON.KSTO.FW.W.0005.000000T0000Z-210806T0400Z/
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
Stanislaus NF West of the Sierra Crest-
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-
1008 PM PDT Wed Aug 4 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THURSDAY FOR
GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214, 266, AND
268...

* AFFECTED AREA...The Burney Basin, northeast foothills, Lassen 
  National Park, and mountains of western Plumas County and of 
  eastern Shasta County. 

* WIND...Southwest 10 to 20 mph with local gusts up to 35 mph, 
  locally higher. Strongest wind expected afternoons into 
  evenings. Wind shifts to the west northwest late day Thursday.

* HUMIDITY...Minimum humidity in the single digits to mid 
  teens. Overnight humidity recoveries 20 to 45 percent. 

* 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

$$

522 
WWUS86 KSTO 051030
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
330 AM PDT Thu Aug 5 2021

...Red Flag Warning For Gusty Wind And Low Humidity Through 
This Evening...

.Areas of gusty wind, mainly over higher terrain and through
favorably oriented canyons, will continue today as low pressure 
moves through. Combined with lower humidity will maintain areas of
elevated to critical fire weather conditions. Wind decreases this 
evening, with lighter northerly wind expected Friday as 
temperatures warm and humidities lower.


CAZ213-215-216-263-279-052300-
/O.EXA.KSTO.FW.W.0005.000000T0000Z-210806T0400Z/
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-Southeast Edge Shasta-
Trinity NF and Western Portions of Tehama-Glenn Unit-
Eastern Mendocino NF-
330 AM PDT Thu Aug 5 2021

...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, 263, AND 279...

* AFFECTED AREA...Fire weather zone 213, 215, 216, 263, and 279.

* WIND...South to southwest 10 to 20 mph with local gusts up to 30
  mph, locally higher. Strongest wind expected over higher terrain
  and through favorably oriented canyons.

* HUMIDITY...Minimum humidity in the single digits to teens.

* 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

$$

CAZ214-221-266-268-269-052300-
/O.CON.KSTO.FW.W.0005.000000T0000Z-210806T0400Z/
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
Stanislaus NF West of the Sierra Crest-
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-
330 AM PDT Thu Aug 5 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR GUSTY WIND FOR FIRE WEATHER ZONES 214, 221, 266, 268, AND 
269...

* AFFECTED AREA...Fire weather zone 214, 221, 266, 268, and 269.

* WIND...Southwest 10 to 20 mph with local gusts up to 35 mph,
  locally higher. Strongest wind expected over higher terrain and
  through favorable oriented canyons. Wind shifts to the west
  northwest late today.

* HUMIDITY...Minimum humidity in the single digits to teens. 

* 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

$$

559 
WWUS86 KSTO 052037
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
137 PM PDT Thu Aug 5 2021

...Red Flag Warning For Gusty Wind And Low Humidity Through This
Evening...

.Areas of gusty wind, low humidity, and extremely dry fuels
continue today, maintaining areas of elevated to critical fire 
weather conditions. Wind is expected to decrease this evening, 
with lighter northerly wind expected Friday as temperatures warm 
and humidities lower.

CAZ213>216-221-263-266-268-269-279-060400-
/O.CON.KSTO.FW.W.0005.000000T0000Z-210806T0400Z/
Eastern Portion of Shasta/Trinity NF-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
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-
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 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-
137 PM PDT Thu Aug 5 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 213, 214, 
215, 216, 221, 263, 266, 268, 269, AND 279...

* AFFECTED AREA...Coastal Range and associated foothills, he
  Burney Basin, northeast foothills, Lassen National Park,
  mountains of western Plumas County and of eastern Shasta County, 
  and Central and Northern Sacramento Valley.

* WIND...Southwest 10 to 20 mph with local gusts up to 30 to 35 
  mph, locally higher. Strongest wind expected over higher terrain
  and through favorable oriented canyons. Wind shifts to the west
  northwest late today.

* HUMIDITY...Minimum humidity in the single digits to teens.

* 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

$$

008 
WWUS86 KSTO 060404
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
904 PM PDT Thu Aug 5 2021

CAZ213>216-221-263-266-268-269-279-060515-
/O.EXP.KSTO.FW.W.0005.000000T0000Z-210806T0400Z/
Eastern Portion of Shasta/Trinity NF-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
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-
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 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-
904 PM PDT Thu Aug 5 2021

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WIND AND LOW HUMIDITY 
FOR FIRE WEATHER ZONES 213, 214, 215, 216, 221, 263, 266, 268, 
269, AND 279...

Winds have subsided this evening. Therefore, the Red Flag Warning
has been allowed to expire. However, daytime humidities will 
remain low with poor to moderate overnight recoveries through 
Saturday. 

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

$$