Alert archive / California / Red Flag Warnings in 2021

Red Flag Warning 14, NWS Sacramento, CA

October 12, 2021

NWS Sacramento, CA issued this red flag warning at Oct 12, 2021, 2:28 PM PDT. It took effect at Oct 14, 2021, 10:00 AM PDT. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 12, 2021, 2:28 PM PDT (21:28 UTC)
In effect from: Oct 14, 2021, 10:00 AM PDT
Expired: Oct 14, 2021, 8:00 PM PDT
In force: 10 hr
Issued by: NWS Sacramento, CA

The text

As transmitted.

582 
WWUS86 KSTO 122128
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
228 PM PDT Tue Oct 12 2021

...Red Flag Warning continues through this evening...

...New Red Flag Warning on Thursday for Gusty Winds and Low
Humidity for the western Sacramento Valley...

.Critical fire weather conditions will continue into the evening
hours as a result of gusty northerly winds and low relative
humidity values. Winds will subside tonight along with some 
improved humidity recoveries. By Wednesday night and into 
Thursday, a renewed period of gusty northerly winds will return, 
primarily impacting the western Sacramento Valley. As humidity 
values decrease on Thursday afternoon, critical fire weather 
conditions will redevelop.

CAZ215>218-279-130200-
/O.NEW.KSTO.FW.W.0014.211014T1700Z-211015T0300Z/
/O.CON.KSTO.FW.W.0013.000000T0000Z-211013T0200Z/
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-Eastern Mendocino NF-
228 PM PDT Tue Oct 12 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 215, 216,
217, 218, AND 279... 

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM PDT THURSDAY FOR
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 215, 216,
217, 218, AND 279...

The National Weather Service in Sacramento has issued a new Red 
Flag Warning, which is in effect from 10 AM to 8 PM PDT Thursday.
The current Red Flag Warning remains in effect through 7 PM PDT 
this evening.

* AFFECTED AREA...The western Sacramento Valley, including the
  Delta. Fire weather zones 215, 216, 217, 218, and 279.

* WIND...For the first Red Flag Warning, north to northeast winds
  15 to 25 mph with gusts 30 to 40 mph through the late afternoon
  and early evening. For the second Red Flag Warning, north to 
  northeast winds 10 to 20 mph with gusts 25 to 35 mph, locally 
  higher. 

* HUMIDITY...For this afternoon and early evening, minimum 
  daytime humidities 6 to 16 percent. For Thursday, minimum 
  daytime humidities 10 to 20 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

$$

CAZ219-220-263-266>268-130200-
/O.CON.KSTO.FW.W.0013.000000T0000Z-211013T0200Z/
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-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)-
228 PM PDT Tue Oct 12 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 219, 220,
263, 266, 267, AND 268...

* AFFECTED AREA...The western slopes of the Sierra Nevada and
  adjacent foothills, as well parts of the Sacramento and northern
  San Joaquin Valleys. Fire weather zones 219, 220, 263, 266, 267,
  and 268.

* WIND...North to northeast wind 10 to 20 mph with gusts up to 35
  mph, locally stronger wind near favored gaps and canyons.

* HUMIDITY...Minimum daytime humidities 6 to 21 percent this
  afternoon and early evening.

* 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

$$

5 follow-up statements

071 
WWUS86 KSTO 130209
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
709 PM PDT Tue Oct 12 2021

...Red Flag Warning on Thursday for Gusty Winds and Low Humidity 
for the Western Sacramento Valley...

.By Wednesday night and into Thursday, a renewed period of gusty 
northerly winds will return, primarily impacting the western 
Sacramento Valley. As humidity values decrease on Thursday 
afternoon, critical fire weather conditions will redevelop.

CAZ215>218-279-131400-
/O.EXP.KSTO.FW.W.0013.000000T0000Z-211013T0200Z/
/O.CON.KSTO.FW.W.0014.211014T1700Z-211015T0300Z/
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-Eastern Mendocino NF-
709 PM PDT Tue Oct 12 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM PDT
THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
215, 216, 217, 218, AND 279...

* AFFECTED AREA...The western Sacramento Valley, including the 
  Delta. Fire weather zones 215, 216, 217, 218, and 279. 

* WIND...North to northeast winds 10 to 20 mph with gusts 25 to 
  35 mph, locally higher.

* HUMIDITY...Minimum daytime humidities 10 to 20 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

$$

CAZ219-220-263-266>268-130315-
/O.EXP.KSTO.FW.W.0013.000000T0000Z-211013T0200Z/
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-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)-
709 PM PDT Tue Oct 12 2021

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW HUMIDITY
FOR FIRE WEATHER ZONES 219, 220, 263, 266, 267, AND 268...

Winds continue to decrease this evening and we are no longer
seeing widespread Red Flag conditions. 

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

$$

753 
WWUS86 KSTO 131030
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
330 AM PDT Wed Oct 13 2021

...Red Flag Warning Thursday for Gusty Winds and Low Humidity for
the Western Sacramento Valley, Delta, and Coastal Range...

.Gusty northerly wind returns late Wednesday through Thursday.
Combined with low humidity will lead to a period of critical fire
weather conditions Thursday in the western Sacramento Valley, 
Delta, and eastern Mendocino National Forest.

CAZ215>218-279-132300-
/O.CON.KSTO.FW.W.0014.211014T1700Z-211015T0300Z/
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-Eastern Mendocino NF-
330 AM PDT Wed Oct 13 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM PDT
THURSDAY FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 
215, 216, 217, 218, AND 279...

* AFFECTED AREA...Fire weather zone 215, 216, 217, 218, and 279.

* WIND...North to northeast winds 8 to 20 mph with gusts 25 to 35
  mph, locally higher.

* HUMIDITY...Minimum daytime humidities 10 to 20 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

$$

530 
WWUS86 KSTO 140230
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
730 PM PDT Wed Oct 13 2021

...Red Flag Warning Thursday for Gusty Winds and Low Humidity for
the Western Sacramento Valley, Delta, and Coastal Range...

.Gusty northerly wind returns late tonight through Thursday. 
Combined with low humidity will lead to a period of critical fire 
weather conditions Thursday in the western Sacramento Valley, 
Delta, and portions of the Coastal Range.

CAZ215>218-279-141400-
/O.CON.KSTO.FW.W.0014.211014T1700Z-211015T0300Z/
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-Eastern Mendocino NF-
730 PM PDT Wed Oct 13 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM PDT
THURSDAY FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES
215, 216, 217, 218, AND 279...

* AFFECTED AREA...Fire weather zones 215, 216, 217, 218, and 279.

* WIND...North to northeast winds 10 to 20 mph with gusts up to 
  30 mph, locally higher. 

* HUMIDITY...Minimum daytime humidities 10 to 15 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

$$

570 
WWUS86 KSTO 140844
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
144 AM PDT Thu Oct 14 2021

...Red Flag Warning Today for Gusty Winds and Low Humidity...

.Gusty northerly wind, combined with low humidity and dry fuels, 
will lead to a period of critical fire weather conditions today
for portions of the Sacramento Valley, Delta, and the Coastal 
Range.

CAZ215>218-279-150000-
/O.CON.KSTO.FW.W.0014.211014T1700Z-211015T0300Z/
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-Eastern Mendocino NF-
144 AM PDT Thu Oct 14 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
8 PM PDT THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 215, 216, 217, 218, AND 279...

* AFFECTED AREA...Portions of the Sacramento Valley, Delta, and
  the Coastal Range, including fire weather zones 215, 216, 217, 
  218, and 279. 

* WIND...North to northeast winds 10 to 20 mph with gusts up to 
  30 mph, locally higher.

* HUMIDITY...Minimum daytime humidities 10 to 15 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

$$

728 
WWUS86 KSTO 150303
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
803 PM PDT Thu Oct 14 2021

CAZ215>218-279-150415-
/O.EXP.KSTO.FW.W.0014.000000T0000Z-211015T0300Z/
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-Eastern Mendocino NF-
803 PM PDT Thu Oct 14 2021

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WIND AND LOW HUMIDITY
FOR FIRE WEATHER ZONES 215, 216, 217, 218, AND 279...

Gusty northerly winds have decreased over the area. 

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

$$

The office that day

Everything else NWS Sacramento, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 12, 3:32 AM PDT	Wind Advisory	STO		10 hr

Nearby

Red Flag Warnings in California, 2021 Every red flag warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.