Alert archive / California / Red Flag Warnings in 2021

Red Flag Warning 7, NWS Sacramento, CA

August 20, 2021

NWS Sacramento, CA issued this red flag warning at Aug 20, 2021, 12:54 PM PDT. It took effect at Aug 21, 2021, 11:00 AM PDT. It was in force for 9 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
Aug 20, 2021, 12:54 PM PDT (19:54 UTC)
In effect from
Aug 21, 2021, 11:00 AM PDT
Expired
Aug 21, 2021, 8:00 PM PDT
In force
9 hr
Issued by
NWS Sacramento, CA

The text

As transmitted.

291 
WWUS86 KSTO 201954
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
1254 PM PDT Fri Aug 20 2021

...Red Flag Warning on Saturday for the Vicinity of the Caldor 
Fire...

.Southwest winds will increase Saturday morning, continuing into
the early evening hours. These winds combined with low humidity
and continued extremely dry fuels could cause critical fire 
weather conditions in the vicinity of the Caldor Fire. 

CAZ269-211600-
/O.NEW.KSTO.FW.W.0007.210821T1800Z-210822T0300Z/
Northern Sierra Including the Tahoe and ElDorado NF/S West of the
Sierra Crest-
1254 PM PDT Fri Aug 20 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM PDT SATURDAY FOR
GUSTY WINDS FOR FIRE WEATHER ZONE 269...

The National Weather Service in Sacramento has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM PDT Saturday. 

* AFFECTED AREA...Portions of fire weather zone 269, specifically
  areas in the vicinity of the Caldor Fire along the western slope
  of the Sierra Nevada.

* WIND...West to southwest wind gusts of 20 to 30 mph, locally up
  to 40 mph in favored gaps, canyons, and higher elevations.

* HUMIDITY...Minimum humidity of 20 to 30 percent.

* IMPACTS...Potential for rapid spread of active wildfire.

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

$$
2 follow-up statements
127 
WWUS86 KSTO 211000
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
300 AM PDT Sat Aug 21 2021

...Red Flag Warning today for the Caldor Fire and vicinity...

.Southwest winds will increase today, continuing into the early 
evening hours. These winds combined with low humidity and 
continued extremely dry fuels may result in critical fire weather
conditions in the vicinity of the Caldor Fire.

CAZ269-220300-
/O.CON.KSTO.FW.W.0007.210821T1800Z-210822T0300Z/
Northern Sierra Including the Tahoe and ElDorado NF/S West of the
Sierra Crest-
300 AM PDT Sat Aug 21 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM PDT THIS EVENING FOR GUSTY WINDS FOR FIRE WEATHER ZONE 
269...

* AFFECTED AREA...Portions of fire weather zone 269, specifically
  areas in the vicinity of the Caldor Fire along the western slope
  of the northern Sierra Nevada.

* WIND...Southwest wind gusts of 20 to 30 mph, locally up to 40
  mph over the higher elevations. 

* HUMIDITY...Minimum humidity of 25 to 35 percent.

* IMPACTS...Potential for rapid spread of active wildfire.

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

$$
376 
WWUS86 KSTO 212056
RFWSTO

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
156 PM PDT Sat Aug 21 2021

...Red Flag Warning today portions of El Dorado County including
the Caldor fire...

.Southwest winds continuing into the early evening hours. These 
winds combined with continued extremely dry fuels will result in 
critical fire weather conditions in the vicinity of the Caldor 
Fire.

CAZ269-220300-
/O.CON.KSTO.FW.W.0007.000000T0000Z-210822T0300Z/
Northern Sierra Including the Tahoe and ElDorado NF/S West of the
Sierra Crest-
156 PM PDT Sat Aug 21 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR GUSTY WINDS FOR FIRE WEATHER ZONE 269...

* AFFECTED AREA...Portions of fire weather zone 269, specifically
  areas in the vicinity of the Caldor Fire along the western 
  slope of the northern Sierra Nevada. 

* WIND...Southwest wind gusts of 20 to 30 mph, locally up to 40 
  mph over the higher elevations.

* HUMIDITY...Minimum humidity of 25 to 35 percent.

* IMPACTS...Potential for rapid spread of active wildfire.

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

$$

Nearby

Red Flag Warnings in California, 2021Every 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.