Alert archive / California / Winter Weather Advisories in 2021

Winter Weather Advisory 21, NWS Eureka, CA

December 14, 20214 counties in California

NWS Eureka, CA issued this winter weather advisory at Dec 14, 2021, 2:21 PM PST for 4 counties in California. It took effect at Dec 15, 2021, 4:00 AM PST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Dec 14, 2021, 2:21 PM PST (22:21 UTC)
In effect from
Dec 15, 2021, 4:00 AM PST
Expired
Dec 15, 2021, 4:00 PM PST
In force
12 hr
Issued by
NWS Eureka, CA

Counties Del Norte County, CA, Humboldt County, CA, Lake County, CA, Mendocino County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 72 km from the middle of the area, began a volume at 22:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 10.4 hours before the alert went out and 244 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Medford/Jackson, OR at 12:00Z on 2021-12-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 12:00Z on 2021-12-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
559 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

325 
WWUS46 KEKA 142221
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
221 PM PST Tue Dec 14 2021

...WINTER WEATHER WILL CONTINUE THROUGH WEDNESDAY...

Heavy snow has come to an end across much of northwest
California. However, another storm system will produce moderate
to heavy snow accumulations for elevations as low 1000 to
2000 feet starting early Wednesday morning.

CAZ114-142330-
/O.CAN.KEKA.WS.A.0007.211215T1200Z-211216T0200Z/
Northern Lake-
221 PM PST Tue Dec 14 2021

...WINTER STORM WATCH IS CANCELLED...


$$

CAZ107-108-150630-
/O.UPG.KEKA.WS.A.0007.211215T1200Z-211216T1000Z/
/O.NEW.KEKA.WS.W.0008.211215T1200Z-211216T1700Z/
Northern Trinity-Southern Trinity-
221 PM PST Tue Dec 14 2021

...WINTER STORM WARNING IN EFFECT FROM 4 AM WEDNESDAY TO 9 AM PST
THURSDAY ABOVE 1000 FEET...

* WHAT...Heavy snow expected above 1000 feet. Total snow 
  accumulations of 10 to 21 inches. Winds gusting as high as 45 
  mph.

* WHERE...Northern Trinity and Southern Trinity Counties.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ102-105-106-110-111-150630-
/O.UPG.KEKA.WS.A.0007.211215T1200Z-211216T0200Z/
/O.NEW.KEKA.WW.Y.0021.211215T1200Z-211216T1700Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-
221 PM PST Tue Dec 14 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM WEDNESDAY TO 9 AM
PST THURSDAY ABOVE 1500 FEET...

* WHAT...Snow expected above 1500 feet. Total snow accumulations 
  of up to 18 inches. Winds gusting as high as 55 mph.

* WHERE...Del Norte Interior, Northern Humboldt Interior, 
  Southern Humboldt Interior, Northwestern Mendocino Interior 
  and Northeastern Mendocino Interior Counties.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$
6 follow-up statements
991 
WWUS46 KEKA 142242
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
242 PM PST Tue Dec 14 2021

...WINTER WEATHER WILL CONTINUE THROUGH WEDNESDAY...

Heavy snow has come to an end across much of Northwest California.
However, another storm system will produce moderate to heavy snow
accumulations for elevations as low 1000 to 2000 feet starting 
early Wednesday morning.

CAZ107-108-150645-
/O.CON.KEKA.WS.W.0008.211215T1200Z-211216T1700Z/
Northern Trinity-Southern Trinity-
242 PM PST Tue Dec 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO
9 AM PST THURSDAY ABOVE 1000 FEET...

* WHAT...Heavy snow expected above 1000 feet. Total snow 
  accumulations of 10 to 21 inches. Winds gusting as high as 45 
  mph.

* WHERE...Southern Trinity and Northern Trinity Counties.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ114-150645-
/O.EXA.KEKA.WW.Y.0021.211215T1200Z-211216T1700Z/
Northern Lake-
242 PM PST Tue Dec 14 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM WEDNESDAY TO 9 AM
PST THURSDAY ABOVE 1500 FEET...

* WHAT...Snow expected. Total snow accumulations of up to 10
  inches. Winds gusting as high as 45 mph.

* WHERE...Northern Lake County.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ102-105-106-110-111-150645-
/O.CON.KEKA.WW.Y.0021.211215T1200Z-211216T1700Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-
242 PM PST Tue Dec 14 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM WEDNESDAY
TO 9 AM PST THURSDAY ABOVE 1500 FEET...

* WHAT...Snow expected. Total snow accumulations of up to 17 
  inches. Winds gusting as high as 55 mph.

* WHERE...Northeastern Mendocino Interior, Northwestern 
  Mendocino Interior, Del Norte Interior, Northern Humboldt 
  Interior and Southern Humboldt Interior Counties.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$
097 
WWUS46 KEKA 150214
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
614 PM PST Tue Dec 14 2021

...WINTER WEATHER EXPECTED WEDNESDAY...

Moderate to heavy precipitation will spread across a cold airmass
located over interior portions of northwest California during
Wednesday. Snow will be likely as a result, with valley floors 
being impacted across Trinity County, and ridges and highway 
passes impacted over Del Norte, Humboldt, Lake, and eastern 
Mendocino Counties. Snow will continue falling over portions of
Trinity County during Wednesday night, and come to an end
elsewhere during early Wednesday evening.

CAZ107-108-151015-
/O.CON.KEKA.WS.W.0008.211215T1200Z-211216T1700Z/
Northern Trinity-Southern Trinity-
614 PM PST Tue Dec 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO
9 AM PST THURSDAY ABOVE 1000 FEET...

* WHAT...Heavy snow expected above 1000 feet. Total snow 
  accumulations of 5 to 24 inches. Winds gusting as high as 50 
  mph.

* WHERE...Southern Trinity and Northern Trinity Counties.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ115-151015-
/O.EXB.KEKA.WW.Y.0021.211215T1200Z-211216T0300Z/
Southern Lake-
614 PM PST Tue Dec 14 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 7 PM PST
WEDNESDAY ABOVE 2000 FEET...

* WHAT...Snow expected above 2000 feet. Total snow accumulations 
  of up to 5 inches. Winds gusting as high as 45 mph.

* WHERE...Southern Lake County.

* WHEN...From 4 AM to 7 PM PST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ102-105-106-110-111-114-151015-
/O.EXT.KEKA.WW.Y.0021.211215T1200Z-211216T0300Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Northern Lake-
614 PM PST Tue Dec 14 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 4 AM TO 7 PM PST
WEDNESDAY ABOVE 2000 FEET...

* WHAT...Snow expected above 2000 feet. Total snow accumulations
  of 5 to 12 inches. Winds gusting as high as 60 mph.

* WHERE...Portions of northwest California.

* WHEN...From 4 AM to 7 PM PST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Strong winds could cause tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$
358 
WWUS46 KEKA 150653
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1053 PM PST Tue Dec 14 2021

...WINTER WEATHER EXPECTED WEDNESDAY...

Moderate to heavy precipitation will spread across a cold airmass
located over interior portions of northwest California during
Wednesday. Snow will be likely as a result, with valley floors
being impacted across Trinity County, and ridges and highway
passes impacted over Del Norte, Humboldt, Lake, and eastern
Mendocino Counties. Snow will continue falling over portions of
Trinity County during Wednesday night, and come to an end
elsewhere during early Wednesday evening.

CAZ107-108-151500-
/O.CON.KEKA.WS.W.0008.211215T1200Z-211216T1700Z/
Northern Trinity-Southern Trinity-
1053 PM PST Tue Dec 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO
9 AM PST THURSDAY ABOVE 1000 FEET...

* WHAT...Heavy snow expected above 1000 feet. Total snow 
  accumulations of 5 to 24 inches. Winds gusting as high as 50 
  mph.

* WHERE...Southern Trinity and Northern Trinity Counties.

* WHEN...From 4 AM Wednesday to 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ102-105-106-110-111-114-115-151500-
/O.CON.KEKA.WW.Y.0021.211215T1200Z-211216T0300Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Northern Lake-Southern Lake-
1053 PM PST Tue Dec 14 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM
PST WEDNESDAY ABOVE 2000 FEET...

* WHAT...Snow expected above 2000 feet. Total snow accumulations
  of 5 to 12 inches. Winds gusting as high as 60 mph.

* WHERE...Portions of northwest California.

* WHEN...From 4 AM to 7 PM PST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Strong winds could cause tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$
732 
WWUS46 KEKA 151336
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
536 AM PST Wed Dec 15 2021

...WINTER WEATHER EXPECTED WEDNESDAY...

Moderate to heavy precipitation will spread across a cold airmass
located over interior portions of northwest California today. 
Snow is likely, with valley floors being impacted across Trinity 
County, and ridges and highway passes impacted over Del Norte, 
Humboldt, Lake, and eastern Mendocino Counties. Snow will continue
falling over portions of Trinity County during Wednesday night, 
and come to an end elsewhere during early Wednesday evening.

CAZ107-108-152145-
/O.CON.KEKA.WS.W.0008.000000T0000Z-211216T1700Z/
Northern Trinity-Southern Trinity-
536 AM PST Wed Dec 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST THURSDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow above 1000 feet. Additional snow accumulations
  of 1 to 7 inches along valley floors and passes and 12 to 24 
  inches along high elevation peaks and ridges. Winds gusting as 
  high as 50 mph.

* WHERE...Southern Trinity and Northern Trinity Counties.

* WHEN...Until 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ102-105-106-110-111-114-115-152145-
/O.EXT.KEKA.WW.Y.0021.000000T0000Z-211216T0000Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Northern Lake-Southern Lake-
536 AM PST Wed Dec 15 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON ABOVE 2000 FEET...

* WHAT...Snow above 2000 feet. Additional snow accumulations of up
  1 to 4 inches along highway mountain passes and 3 to 13 inches 
  along high elevation peaks and ridges. Winds gusting as high as 
  55 mph.

* WHERE...Portions of northwest California.

* WHEN...Until 4 PM PST this afternoon.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning commute. Strong 
  winds could cause tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$
566 
WWUS46 KEKA 151654
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
854 AM PST Wed Dec 15 2021

...WINTER WEATHER CONTINUES...

Moderate to heavy precipitation will spread across a cold airmass
located over interior portions of northwest California today.
Snow is likely, with valley floors being impacted across Trinity
County, and ridges and highway passes impacted over Del Norte,
Humboldt, Lake, and eastern Mendocino Counties. Snow will
continue falling over portions of Trinity County today and
tonight. Snow will diminish across other areas this afternoon and 
evening. 

CAZ107-108-160100-
/O.CON.KEKA.WS.W.0008.000000T0000Z-211216T1700Z/
Northern Trinity-Southern Trinity-
854 AM PST Wed Dec 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST THURSDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow above 1500 feet. Additional snow accumulations
  of 6 to 12 inches through Thursday morning...with heavier snow
  above 3000 feet. 

* WHERE...Southern Trinity and Northern Trinity Counties.

* WHEN...Until 9 AM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ102-105-106-110-111-114-115-160000-
/O.CON.KEKA.WW.Y.0021.000000T0000Z-211216T0000Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Northern Lake-Southern Lake-
854 AM PST Wed Dec 15 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON BETWEEN 2000 TO 3000 FEET...

* WHAT...Snow above 2000 feet during the morning hours with snow
  accumulations of 3 to 6 inches. Snow levels rising to 3000 ft 
  in the afternoon. 

* WHERE...Portions of northwest California.

* WHEN...Until 4 PM PST this afternoon.

* IMPACTS...Travel could be very difficult to impossible. Strong 
  winds could cause tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$
194 
WWUS46 KEKA 152117
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
117 PM PST Wed Dec 15 2021

...AREAS OF HEAVY SNOW TO CONTINUE THROUGH EARLY EVENING...

Snow levels will gradually rise this afternoon and range from 
2500 to 3500 feet. Heaviest snow continues across portions of 
Trinity County where an additional 4 to 8 inches is possible 
through this evening. Greater amounts are likely above 3500 feet.
Precipitation rates will taper off during the evening but 
scattered rain and snow showers are likely through the night. 

CAZ115-152230-
/O.CAN.KEKA.WW.Y.0021.000000T0000Z-211216T0000Z/
Southern Lake-
117 PM PST Wed Dec 15 2021

...WINTER WEATHER ADVISORY IS CANCELLED FOR SOUTHERN lAKE
COUNTY DUE TO RISING SNOW LEVELS...

$$

CAZ102-105-106-110-111-114-160300-
/O.EXB.KEKA.WS.W.0008.000000T0000Z-211216T0300Z/
/O.CON.KEKA.WW.Y.0021.000000T0000Z-211216T0000Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Northern Lake-
117 PM PST Wed Dec 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING FOR ELEVATIONS ABOVE 2500 FEET... 

* WHAT...Heavy snow across elevations ranging from 2500 to 3500
  will continue through early evening. An additional 4 to 8 inches
  are possible. Locally, lower elevation communities could see 2
  to 4 inches. Precipitation rates will taper off overnight but
  scattered rain or snow showers are likely through morning.  

* WHERE...Portions of northwest California interior above 2500
  feet in elevation.

* WHEN...For the Winter Storm Warning, until 7 PM PST this
  evening. 

* IMPACTS...Travel could be very difficult...especially over
  higher passes along Highways 3, 36 and 299. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Slow down and use caution while traveling. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

CAZ107-108-160300-
/O.EXT.KEKA.WS.W.0008.000000T0000Z-211216T0300Z/
Northern Trinity-Southern Trinity-
117 PM PST Wed Dec 15 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 7 PM PST THIS
EVENING ABOVE 2000 FEET IN ELEVATION...

* WHAT...Areas of heavy snow. Additional snow accumulations of up
  6 to 10 inches are possible above 2000 feet....with greater
  accumulations above 3000 feet. Precipitation rates are expected
  to taper off by early evening but scattered rain and snow 
  showers will continue overnight. 

* WHERE...Southern Trinity and Northern Trinity Counties.

* WHEN...Until 7 PM PST this evening.

* IMPACTS...Travel could be very difficult to impossible along
  higher passes of highways 3, 36 and 299.  Gusty winds could 
  bring down tree branches.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state of California can be
obtained by calling 1-800-GAS-ROAD.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 13, 6:05 PM PSTHigh Wind WatchEKADel Norte18 hr
Dec 13, 6:05 PM PSTWind AdvisoryEKADel Norte, Humboldt, Lake, Mendocino, Trinity45 hr
Dec 14, 2:42 AM PSTSmall Craft AdvisoryEKA25 hr
Dec 14, 2:42 AM PSTHazardous Seas WarningEKA6 hr
Dec 14, 12:16 PM PSTHigh Wind WarningEKADel Norte27 hr
Dec 14, 2:21 PM PSTWinter Storm WarningEKADel Norte, Humboldt, Lake, Mendocino, Trinity32 hr

Nearby

Winter Weather Advisories in California, 2021Every winter weather advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.