Alert archive / California / Red Flag Warnings in 2020

Red Flag Warning 3, NWS Eureka, CA

August 15, 2020

NWS Eureka, CA issued this red flag warning at Aug 15, 2020, 11:22 AM PDT. It took effect at Aug 15, 2020, 11:00 PM PDT. It was in force for 19 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 15, 2020, 11:22 AM PDT (18:22 UTC)
In effect from
Aug 15, 2020, 11:00 PM PDT
Expired
Aug 16, 2020, 6:00 PM PDT
In force
19 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

683 
WWUS86 KEKA 151822
RFWEKA

Urgent - Fire Weather Message
National Weather Service Eureka CA
1122 AM PDT Sat Aug 15 2020

...FIRE STARTS DUE TO ABUNDANT LIGHTNING POSSIBLE LATE TONIGHT
AND SUNDAY...

.A moist unstable airmass is forecast to spread north across
northern California late tonight and Sunday. That environment 
will support thunderstorm developing near or just south of
Mendocino and Lake Counties late tonight, and quickly tracking
north across our area Sunday morning. Additional storms are
expected to fire over portions of Trinity County through the day
Sunday, perhaps clipping portions of interior Humboldt and 
southeast Del Norte County as well. Thunderstorms are already 
ongoing Saturday morning in parts of southern and central 
California. While briefly heavy rainfall and erratic, gusty winds 
may accompany these storms, they will be rather fast moving from 
south to north. This, along with ongoing low humidity values and 
very dry fuels will favor fire starts due to lightning.


CAZ264-276-277-160230-
/O.UPG.KEKA.FW.A.0002.200816T0600Z-200817T0600Z/
/O.NEW.KEKA.FW.W.0003.200816T0600Z-200816T1800Z/
Lake County Portion of Lake/Napa/Sonoma RU-Interior Mendocino-
W Mendocino NF/E Mendocino Unit-
1122 AM PDT Sat Aug 15 2020

...RED FLAG WARNING IN EFFECT FROM 11 PM THIS EVENING TO 11 AM
PDT SUNDAY...

The National Weather Service in Eureka has issued a Red Flag
Warning, which is in effect from 11 PM this evening to 11 AM PDT
Sunday. The Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Fire weather zone 264, 276, and 277. 

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and
  around thunderstorms. Otherwise, winds are forecast to be light
  and variable, tending westerly 5 to 10 mph Sunday afternoon. 

* IMPACTS...Higher potential for wildfire starts in proximity to
  thunderstorms due to lightning. Any fires that develop may
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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. 

&&

$$

CAZ204-211-212-283-160230-
/O.UPG.KEKA.FW.A.0002.200816T1500Z-200817T0600Z/
/O.NEW.KEKA.FW.W.0003.200816T1200Z-200817T0300Z/
Lower Middle Klamath-Hoopa-Van Duzen/Mad River-Trinity-
1122 AM PDT Sat Aug 15 2020

...RED FLAG WARNING IN EFFECT FROM 5 AM TO 8 PM PDT SUNDAY...

The National Weather Service in Eureka has issued a Red Flag
Warning, which is in effect from 5 AM to 8 PM PDT Sunday. The
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Fire weather zones 204, 211, 212, and 283,
  including 

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat for
  fire starts due to lightning. 

* WINDS...Erratic, gusty outflow winds will be possible in and
  around thunderstorms. Outside of thunderstorms, West to
  southwest winds will develop for Sunday afternoon and evening at
  8 to 15 mph. Winds may be locally gusty through exposed river
  valleys and over mountain ridges. Lighter winds forecast for Sunday
  night and Monday. 

* IMPACTS...Higher potential for wildfire starts in proximity to
  thunderstorms due to lightning. Any fires that develop may
  spread rapidly due to the combination of dry fuels, low
  humidity, and locally breezy conditions. 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. 

&&

$$


http://weather.gov/eureka
4 follow-up statements
681 
WWUS86 KEKA 160445
RFWEKA

Urgent - Fire Weather Message
National Weather Service Eureka CA
945 PM PDT Sat Aug 15 2020

...FIRE STARTS DUE TO ABUNDANT LIGHTNING POSSIBLE LATE TONIGHT
AND SUNDAY...

.A moist unstable airmass is forecast to spread north across
northern California late tonight and Sunday. That environment
will support thunderstorm developing near or just south of
Mendocino and Lake Counties late tonight, and quickly tracking
north across our area Sunday morning. Additional storms are
expected to fire over portions of Trinity County through the day
Sunday, perhaps clipping portions of interior Humboldt and
southeast Del Norte County as well. Thunderstorms are already
ongoing Saturday morning in parts of southern and central
California. While briefly heavy rainfall and erratic, gusty winds
may accompany these storms, they will be rather fast moving from
south to north. This, along with ongoing low humidity values and
very dry fuels will favor fire starts due to lightning.

CAZ264-276-277-161245-
/O.CON.KEKA.FW.W.0003.200816T0600Z-200816T1800Z/
Lake County Portion of Lake/Napa/Sonoma RU-Interior Mendocino-
W Mendocino NF/E Mendocino Unit-
945 PM PDT Sat Aug 15 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 AM PDT SUNDAY...

* AFFECTED AREA...Fire weather zone 264, 276, and 277.

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and 
  around thunderstorms. Otherwise, winds are forecast to be 
  light and variable, tending westerly 5 to 10 mph Sunday 
  afternoon.

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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.

&&

$$

CAZ204-211-212-283-161245-
/O.CON.KEKA.FW.W.0003.200816T1200Z-200817T0300Z/
Lower Middle Klamath-Hoopa-Van Duzen/Mad River-Trinity-
945 PM PDT Sat Aug 15 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM 5 AM TO 8 PM PDT
SUNDAY...

* AFFECTED AREA...Fire weather zones 204, 211, 212, and 283, 
  including 

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat
  for fire starts due to lightning. 

* WINDS...Erratic, gusty outflow winds will be possible in and
  around thunderstorms. Outside of thunderstorms, West to
  southwest winds will develop for Sunday afternoon and evening at
  8 to 15 mph. Winds may be locally gusty through exposed river
  valleys and over mountain ridges. Lighter winds forecast for
  Sunday night and Monday. 

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels, low 
  humidity, and locally breezy conditions. 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.

&&

$$


http://weather.gov/eureka
579 
WWUS86 KEKA 161120
RFWEKA

Urgent - Fire Weather Message
National Weather Service Eureka CA
420 AM PDT Sun Aug 16 2020

...ABUNDANT LIGHTNING WITH POSSIBLE FIRE STARTS TODAY...

.Thunderstorms along the coast of Central California is expected 
to spread northward into Lake and Mendocino Counties early this 
morning. While brief light rain and erratic, gusty winds may 
accompany these storms, they will be rather fast moving from south
to north. This, along with low humidity values and very dry fuels
will favor fire starts due to lightning. The lightning activity 
is expected to spread northward into eastern Humboldt and Trinity 
Counties later this morning, with lightning activity expected to 
continue into the afternoon hours.

CAZ264-276-161930-
/O.CAN.KEKA.FW.W.0003.000000T0000Z-200816T1800Z/
/O.NEW.KEKA.FW.W.0004.200816T1200Z-200816T2100Z/
Lake County Portion of Lake/Napa/Sonoma RU-Interior Mendocino-
420 AM PDT Sun Aug 16 2020

...RED FLAG WARNING FOR ABUNDANT LIGHTNING IN EFFECT UNTIL 2 PM 
PDT THIS AFTERNOON...

The National Weather Service in Eureka has issued a Red Flag
Warning, which is in effect until 2 PM PDT this afternoon. 

* AFFECTED AREA...Fire weather zone 264. Fire weather zone 276.

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and 
  around thunderstorms. Otherwise, winds are forecast to be 
  light and variable, tending westerly 5 to 10 mph Sunday 
  afternoon. 

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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 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.

&&

$$

CAZ277-161930-
/O.CAN.KEKA.FW.W.0003.000000T0000Z-200816T1800Z/
/O.NEW.KEKA.FW.W.0004.200816T1200Z-200817T0300Z/
W Mendocino NF/E Mendocino Unit-
420 AM PDT Sun Aug 16 2020

...RED FLAG WARNING FOR ABUNDANT LIGHTNING IN EFFECT UNTIL 8 PM 
PDT THIS EVENING...

The National Weather Service in Eureka has issued a Red Flag
Warning, which is in effect until 8 PM PDT this evening. 

* AFFECTED AREA...Fire weather zone 277.

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and 
  around thunderstorms. Otherwise, winds are forecast to be 
  light and variable, tending westerly 5 to 10 mph Sunday 
  afternoon. 

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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 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.

&&

$$

CAZ204-211-212-283-161930-
/O.CON.KEKA.FW.W.0003.200816T1200Z-200817T0300Z/
Lower Middle Klamath-Hoopa-Van Duzen/Mad River-Trinity-
420 AM PDT Sun Aug 16 2020

...RED FLAG WARNING FOR ABUNDANT LIGHTNING REMAINS IN EFFECT 
UNTIL 8 PM PDT THIS EVENING...

* AFFECTED AREA...Fire weather zone 204. Fire weather zone 
  211. Fire weather zone 212. Fire weather zone 283. 

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and 
  around thunderstorms. Outside of thunderstorms, West to 
  southwest winds will develop for Sunday afternoon and evening 
  at 8 to 15 mph. Winds may be locally gusty through exposed 
  river valleys and over mountain ridges. Lighter winds 
  forecast for Sunday night and Monday.

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels, low 
  humidity, and locally breezy conditions. 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.

&&

$$


http://weather.gov/eureka
731 
WWUS86 KEKA 161906
RFWEKA

Urgent - Fire Weather Message
National Weather Service Eureka CA
1206 PM PDT Sun Aug 16 2020

...SCATTERED THUNDERSTORMS CONTAINING LOCALLY GUSTY WINDS 
POSSIBLE THROUGH THIS AFTERNOON MAINLY IN TRINITY COUNTY... 

...ANOTHER ROUND OF SCATTERED THUNDERSTORMS LATE TONIGHT THROUGH 
SUNDAY MORNING FOR PORTIONS OF MENDOCINO, LAKE, AND SOUTHERN 
TRINITY COUNTIES....

.While there continue to be some showers around with perhaps a
stray rumble of thunder, the bulk of the lightning activity has
either diminished or shifted to our south and east. That said,
there still may be some new thunderstorm development this
afternoon around in and around Trinity County, and Red Flag
Warnings will continue for those areas. Any storms will be fast-
moving, with only light rainfall, and contain locally gusty
outflow winds. 

Another round of scattered showers and thunderstorms will push
northward tonight into Monday morning, and impact similar areas 
as we saw this morning and last night, mainly in and around
interior Mendocino and Lake Counties, and portions of southeastern
Trinity County. Thus, another Red Flag Warning has been issued for
those zones for late tonight through late Monday morning. These
thunderstorms will once again be capable of causing new fire
starts due to their relatively dry nature and fast-movement, along
with the continued dry fuels and low humidity conditions in place.  


CAZ264-276-170315-
/O.CAN.KEKA.FW.W.0004.000000T0000Z-200816T2100Z/
/O.NEW.KEKA.FW.W.0005.200817T0900Z-200817T1800Z/
Lake County Portion of Lake/Napa/Sonoma RU-Interior Mendocino-
1206 PM PDT Sun Aug 16 2020

...RED FLAG WARNING IN EFFECT FROM 2 AM TO 11 AM PDT MONDAY...

The National Weather Service in Eureka has issued a Red Flag
Warning, which is in effect from 2 AM to 11 AM PDT Monday. 

The previous Red Flag Warning for early afternoon today has been 
cancelled early. 

* AFFECTED AREA...Fire weather zone 264 and 276.

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and
  around thunderstorms. Winds outside of storms will be lighter,
  but west-northwest breezes will pick up late Monday afternoon
  and evening. 

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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.

&&

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.

&&

$$

CAZ277-170315-
/O.CAN.KEKA.FW.W.0004.000000T0000Z-200817T0300Z/
/O.NEW.KEKA.FW.W.0005.200817T0900Z-200817T1800Z/
W Mendocino NF/E Mendocino Unit-
1206 PM PDT Sun Aug 16 2020

...RED FLAG WARNING IN EFFECT FROM 2 AM TO 11 AM PDT MONDAY...

The National Weather Service in Eureka has issued a Red Flag
Warning, which is in effect from 2 AM to 11 AM PDT Monday. 

The previous Red Flag Warning for this afternoon has been 
cancelled early. 

* AFFECTED AREA...Fire weather zone 277.

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and
  around thunderstorms. Winds outside of storms will be lighter,
  but west-northwest breezes will pick up late Monday afternoon
  and evening. 

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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.

&&

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.

&&

$$

CAZ204-211-212-283-170100-
/O.EXT.KEKA.FW.W.0003.000000T0000Z-200817T0100Z/
Lower Middle Klamath-Hoopa-Van Duzen/Mad River-Trinity-
1206 PM PDT Sun Aug 16 2020

...RED FLAG WARNING NOW IN EFFECT UNTIL 6 PM PDT THIS EVENING...

* AFFECTED AREA...Fire weather zone 204, 211, 212 and 283. 

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and
  around thunderstorms. Outside of thunderstorms, West to
  southwest winds will develop for Sunday afternoon and evening at
  8 to 15 mph. Winds may be locally gusty through exposed river
  valleys and over mountain ridges. Lighter winds will follow
  overnight tonight into Monday morning, followed by more typical
  up-valley west-northwest breezes Monday afternoon and evening. 

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels, low 
  humidity, and locally breezy conditions. 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.

&&

$$


http://weather.gov/eureka
133 
WWUS86 KEKA 170102
RFWEKA

Urgent - Fire Weather Message
National Weather Service Eureka CA
602 PM PDT Sun Aug 16 2020

...ANOTHER ROUND OF SCATTERED THUNDERSTORMS LATE TONIGHT THROUGH
SUNDAY MORNING FOR PORTIONS OF MENDOCINO, LAKE, AND SOUTHERN
TRINITY COUNTIES....

Another round of scattered showers and thunderstorms will push
northward tonight into Monday morning, and impact similar areas
as we saw this morning and last night, mainly in and around
interior Mendocino and Lake Counties and portions of southeastern
Trinity County. Another Red Flag Warning has been issued for 
those zones for late tonight through late Monday morning. These 
thunderstorms will once again be capable of causing new fire 
starts due to their relatively dry nature and fast-movement, along
with the continued dry fuels and low humidity conditions in 
place.

CAZ204-211-212-283-170215-
/O.EXP.KEKA.FW.W.0003.000000T0000Z-200817T0100Z/
Lower Middle Klamath-Hoopa-Van Duzen/Mad River-Trinity-
602 PM PDT Sun Aug 16 2020

...RED FLAG WARNING HAS EXPIRED...

$$

CAZ264-276-277-171200-
/O.CON.KEKA.FW.W.0005.200817T0900Z-200817T1800Z/
Lake County Portion of Lake/Napa/Sonoma RU-Interior Mendocino-
W Mendocino NF/E Mendocino Unit-
602 PM PDT Sun Aug 16 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 AM TO 11 AM PDT
MONDAY...

* AFFECTED AREA...Fire weather zone 264 and 276.

* THUNDERSTORMS...Fast moving thunderstorms will pose a threat 
  for fire starts due to lightning.

* WINDS...Erratic, gusty outflow winds will be possible in and 
  around thunderstorms. Winds outside of storms will be 
  lighter, but west-northwest breezes will pick up late Monday 
  afternoon and evening.

* IMPACTS...Higher potential for wildfire starts in proximity 
  to thunderstorms due to lightning. Any fires that develop may 
  spread rapidly due to the combination of dry fuels and low 
  humidity. 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.

&&

$$


http://weather.gov/eureka

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 10:38 PM PDTFire Weather WatchEKA13 hr

Nearby

Red Flag Warnings in California, 2020Every red flag warning in 2020

Sources

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