Alert archive / California / Winter Storm Warnings in 2019

Winter Storm Warning 8, NWS Eureka, CA

November 25, 20194 counties in California

NWS Eureka, CA issued this winter storm warning at Nov 25, 2019, 3:58 AM PST for 4 counties in California. It took effect at Nov 26, 2019, 10:00 AM PST. It was in force for 28 hr. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Nov 25, 2019, 3:58 AM PST (11:58 UTC)
In effect from
Nov 26, 2019, 10:00 AM PST
Expired
Nov 27, 2019, 2:00 PM PST
In force
28 hr
Issued by
NWS Eureka, CA

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

The radar

The Eureka (Bunker Hill) radar (KBHX), 60 km from the middle of the area, began a volume at 11:58 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.

What was reported inside it

TimeReportWhereRemark
Nov 26, 2:30 PM PSTSNOW 3.53 S Weaverville, CACORRECTS PREVIOUS NON-TSTM WND DMG REPORT FROM 3 S WEAVERVILLE. SOCIAL MEDIA REPORT OF 3.5 INCHES OF SNOW IN DOWNTOWN WEAVERVILLE.
Nov 26, 5:07 PM PSTSNOW 8Lewiston, CASPOTTER REPORTS 8 INCHES OF SNOW ACCUMULATION SINCE 1000 PST.
Nov 27, 8:00 AM PSTSNOW 2.52 Nw Big Bar, CACORRECTS PREVIOUS SNOW REPORT FROM 2 NW BIG BAR. STATION ELEVATION: 1257 FT. AWNING COLLAPSED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 00:00Z, 12.0 hours before the alert went out and 204 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 00:00Z on 2019-11-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2019-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1051 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

024 
WWUS46 KEKA 251158
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
358 AM PST Mon Nov 25 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TUESDAY AND WEDNESDAY 
DUE TO WINTER WEATHER...

.A powerful winter storm will produce heavy mountain snow, strong
winds, and low elevation small hail Tuesday and Wednesday. 
Confidence continues to increase that winter weather will cause 
significant impacts to holiday travel Tuesday and Wednesday, 
particularly across interior mountain roadways above 2500 feet in 
elevation.

CAZ102-105>108-111-260000-
/O.UPG.KEKA.WS.A.0006.191126T1800Z-191127T2200Z/
/O.NEW.KEKA.WS.W.0008.191126T1800Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northern Trinity-Southern Trinity-
Northeastern Mendocino Interior-
358 AM PST Mon Nov 25 2019

...WINTER STORM WARNING IN EFFECT FROM 10 AM TUESDAY TO 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 12 inches
  inches likely above 2500 feet in elevation, with even greater
  totals above 4000 feet. Winds gusting as high as 60 mph.

* WHERE...Elevations above 2500 feet in Trinity, Humboldt
  interior, and Del Norte interior. Elevations above 3000 feet in
  northeastern Mendocino County.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions could impact
  holiday travel, in addition to morning and evening commutes.
  Strong winds could cause tree damage.

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.

&&

$$
10 follow-up statements
473 
WWUS46 KEKA 252214
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
214 PM PST Mon Nov 25 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TUESDAY AND WEDNESDAY
DUE TO WINTER WEATHER...

.A powerful winter storm will produce heavy mountain snow, strong
winds, and low elevation small hail Tuesday and Wednesday.
Confidence continues to increase that winter weather will cause
significant impacts to holiday travel Tuesday and Wednesday,
particularly across interior mountain roadways above 2000 to 3000 
feet in elevation.

CAZ102-105-106-108-111-260615-
/O.CON.KEKA.WS.W.0008.191126T1800Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Southern Trinity-
Northeastern Mendocino Interior-
214 PM PST Mon Nov 25 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
2 PM PST WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 4 to 10 inches
  inches likely above 2500 feet in elevation, with even greater
  totals above 4000 feet. Winds gusting between 50 and 70 mph near
  higher passes and peaks.

* WHERE...Elevations above 2500 feet in southern Trinity, 
  Humboldt interior, and Del Norte interior. Elevations above 3000
  feet in northeastern Mendocino County.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions could impact
  holiday travel, in addition to morning and evening commutes.
  Strong winds could cause tree damage and reduced visibility.

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.

&&

$$

CAZ107-260615-
/O.CON.KEKA.WS.W.0008.191126T1800Z-191127T2200Z/
Northern Trinity-
214 PM PST Mon Nov 25 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
2 PM PST WEDNESDAY ABOVE 2000 FEET...

* WHAT...Heavy snow. Total snow accumulations of 6 to 12 inches
  inches likely above 2000 feet in elevation, with even greater
  totals above 3000 feet. Winds gusting between 40 and 55 mph in
  higher peaks and some mountain summits.

* WHERE...Elevations above 2000 feet in norther Trinity county.
  Includes long stretches of Highway 3, summits of Highway 299, 
  Trinity Center, and potentially Weaverville proper.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions could impact 
  holiday travel, in addition to morning and evening commutes. 
  Strong winds could cause tree damage and reduced visibility.

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.

&&

$$
242 
WWUS46 KEKA 260422
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
822 PM PST Mon Nov 25 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TUESDAY AND WEDNESDAY
DUE TO WINTER WEATHER...

.A winter storm will produce heavy mountain snow, strong winds, 
and low elevation small hail Tuesday and Wednesday. Confidence 
continues to increase that winter weather will cause significant 
impacts to holiday travel Tuesday and Wednesday, particularly 
across interior mountain roadways above 2500 feet in elevation.

CAZ102-105>108-111-261230-
/O.CON.KEKA.WS.W.0008.191126T1800Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northern Trinity-Southern Trinity-
Northeastern Mendocino Interior-
822 PM PST Mon Nov 25 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
2 PM PST WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 12 inches
  inches likely above 2500 feet in elevation, with even greater
  totals above 4000 feet.

* WHERE...Interior mountains mainly above 2500 feet in Del Norte,
  Humboldt, northeast Mendocino, and Trinity Counties.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning and evening commutes.
  Strong winds could cause tree damage and reduced visibility due
  to blowing snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, carry chains, 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.

&&

$$
197 
WWUS46 KEKA 261219
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
419 AM PST Tue Nov 26 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TODAY AND WEDNESDAY DUE 
TO WINTER WEATHER...

.A winter storm will produce heavy mountain snow, strong winds,
and low elevation small hail today and Wednesday. Confidence 
continues to increase that winter weather will cause significant 
impacts to holiday travel through Wednesday, particularly across 
interior mountain roadways above 2000 to 2500 feet in elevation.

CAZ102-105>108-111-262330-
/O.CON.KEKA.WS.W.0008.191126T1800Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northern Trinity-Southern Trinity-
Northeastern Mendocino Interior-
419 AM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 2 PM PST WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 13 inches 
  inches likely above 2500 feet in elevation, with even greater 
  totals above 4000 feet.

* WHERE...Interior mountains mainly above 2500 feet in Del Norte,
  Humboldt, northeast Mendocino, and Trinity Counties. Locally
  lower snow levels between 1500 and 2000 feet in northern Trinity
  County.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning and evening commutes. 
  Strong winds could cause tree damage and reduced visibility 
  due to blowing snow.

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.

&&

$$
891 
WWUS46 KEKA 261804
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1004 AM PST Tue Nov 26 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TODAY AND WEDNESDAY DUE
TO WINTER WEATHER...

.A winter storm will produce heavy mountain snow, strong winds,
and low elevation small hail today and Wednesday. Confidence
continues to increase that winter weather will cause significant
impacts to holiday travel through Wednesday, particularly across
interior mountain roadways above 1500 to 2500 feet in elevation.
The consistently lowest elevation snow will likely occur across
northern Trinity County, and may cause significant travel impacts
along Highways 299 and 3, among others. 

CAZ102-105-106-111-270215-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
1004 AM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 13 inches 
  inches likely above 2500 feet in elevation, with even greater 
  totals above 4000 feet.

* WHERE...Interior mountains mainly above 2500 feet in Del Norte,
  Humboldt, northeast Mendocino, and Trinity Counties for the
  heaviest accumulations. Lighter accumulations can be expected as
  low as 1500 feet at times.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning and evening commutes. 
  Strong winds could cause tree damage and reduced visibility 
  due to blowing snow.

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.

&&

$$

CAZ107-108-270215-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Northern Trinity-Southern Trinity-
1004 AM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 13 inches
  inches likely above 2000 feet in elevation, with even greater
  totals above 3000 feet. Lighter snow accumulations will be 
  possible at ALL elevations below 2000 feet. 

* WHERE...Impactful accumulations are expected above 2000 feet in
  elevation. This includes Weaverville, Hayfork, Trinity Center
  and many other nearby communities. Lighter snow accumulations
  will be possible at ALL elevations below 2000 feet.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning and evening commutes. 
  Strong winds could cause tree damage and reduced visibility 
  due to blowing snow.

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.

&&

$$
527 
WWUS46 KEKA 262136
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
136 PM PST Tue Nov 26 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TODAY AND WEDNESDAY DUE
TO WINTER WEATHER...

.A winter storm will produce heavy mountain snow, strong winds,
and low elevation small hail today and Wednesday. Confidence
continues to increase that winter weather will cause significant
impacts to holiday travel through Wednesday, particularly across
interior mountain roadways above 1500 to 2500 feet in elevation.
The consistently lowest elevation snow will likely occur across
northern Trinity County, and may cause significant travel impacts
along Highways 299 and 3, among others.

CAZ102-105-106-111-270545-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
136 PM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 13 inches 
  inches likely above 2500 feet in elevation, with even greater 
  totals above 4000 feet.

* WHERE...Interior mountains mainly above 2500 feet in Del 
  Norte, Humboldt, northeast Mendocino, and Trinity Counties for 
  the heaviest accumulations. Lighter accumulations can be 
  expected as low as 1500 feet at times.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning and evening commutes. 
  Strong winds could cause tree damage and reduced visibility 
  due to blowing snow.

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.

&&

$$

CAZ107-108-270545-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Northern Trinity-Southern Trinity-
136 PM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 6 to 13 inches 
  inches likely above 2000 feet in elevation, with even greater 
  totals above 3000 feet. Lighter snow accumulations will be 
  possible at ALL elevations below 2000 feet.

* WHERE...Impactful accumulations are expected above 2000 feet 
  in elevation. This includes Weaverville, Hayfork, Trinity 
  Center and many other nearby communities. Lighter snow 
  accumulations will be possible at ALL elevations below 2000 
  feet.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning and evening commutes.
  Strong winds could cause tree damage and reduced visibility due
  to blowing snow.

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.

&&

$$

CAZ101-103-104-270545-
/O.NEW.KEKA.WW.Y.0010.191127T0200Z-191127T2200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
136 PM PST Tue Nov 26 2019

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
2 PM PST WEDNESDAY...

* WHAT...Periodic accumulating small hail on roadways expected. 1
  to 3 inches of snow above 2000 feet in the King Range. Winds
  gusting between 50 and 70 mph.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and
  Southwestern Humboldt Counties to sea level. This includes 
  Highway 101, and many other roadways.

* WHEN...From 6 PM this evening to 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail may create very slippery and
  dangerous road conditions, which may impact holiday travel in
  many locations. Strong winds will likely 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.

&&

$$

CAZ109-110-112-113-270545-
/O.NEW.KEKA.WW.Y.0010.191127T0400Z-191127T2200Z/
Mendocino Coast-Northwestern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
136 PM PST Tue Nov 26 2019

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO
2 PM PST WEDNESDAY...

* WHAT...Periodic accumulating small hail on roadways expected. 1
  to 3 inches of snow Ave 2000 feet. Small hail and light snow 
  will be possible along Highway 101, especially near summits. 
  Winds gusting to 50 mph.

* WHERE...Southern and Western Mendocino county, including the
  entire Highway 101 corridor.

* WHEN...From 8 PM this evening to 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail or light snow may create very
  slippery and dangerous road conditions, which may impact holiday
  travel in many locations. Strong winds may 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.

&&

$$
547 
WWUS46 KEKA 270556
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
956 PM PST Tue Nov 26 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL TODAY AND WEDNESDAY DUE
TO WINTER WEATHER...

.A winter storm will produce heavy mountain snow, strong winds,
and low elevation small hail today and Wednesday. Major travel
impacts will continue into Wednesday, with many chain
restrictions and delays, particularly across interior mountain 
roadways above 1500 to 2500 feet in elevation. Snow will be
especially widespread across Trinity County, with difficult travel
across much of Highways 299, 36, and 3. 

CAZ102-105-106-111-271400-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
956 PM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 8 to 16 inches 
  inches likely above 2500 feet in elevation, with even greater 
  totals above 4000 feet.

* WHERE...Interior mountains mainly above 2500 feet in Del 
  Norte, Humboldt, northeast Mendocino, and Trinity Counties for 
  the heaviest accumulations. Lighter accumulations can be 
  expected as low as 1500 feet at times.

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning and evening commutes.
  Strong winds could cause tree damage and reduced visibility due
  to blowing snow.

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.

&&

$$

CAZ107-108-271400-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Northern Trinity-Southern Trinity-
956 PM PST Tue Nov 26 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Heavy snow. Total snow accumulations of 12 to 20 inches 
  inches likely above 2000 feet in elevation, with even greater 
  totals above 3000 feet. Lighter snow accumulations will be 
  possible at ALL elevations below 2000 feet.

* WHERE...Impactful accumulations are expected above 2000 feet in
  elevation. This includes Weaverville, Hayfork, Trinity Center
  and many other nearby communities. Lighter snow accumulations
  will be possible at ALL elevations below 2000 feet on Wednesday. 

* WHEN...From 10 AM Tuesday to 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning and evening commutes. 
  Strong winds could cause tree damage and reduced visibility 
  due to blowing snow.


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.

&&

$$

CAZ101-103-104-271400-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
956 PM PST Tue Nov 26 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Periodic accumulating small hail on roadways expected. 1
  to 3 inches of snow above 1500 feet in the King Range. Winds
  gusting between 50 and 70 mph tonight, diminishing on Wednesday.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties to sea level. This includes 
  Highway 101, and many other roadways.

* WHEN...From 6 PM this evening to 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail may create very slippery and 
  dangerous road conditions, which may impact holiday travel in 
  many locations. Strong winds will likely 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.

&&

$$

CAZ109-110-112-113-271400-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Mendocino Coast-Northwestern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
956 PM PST Tue Nov 26 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST
WEDNESDAY...

* WHAT...Periodic accumulating small hail on roadways expected. 1
  to 3 inches of snow above 2000 feet. Small hail and light snow 
  will be possible along Highway 101, especially near summits. 
  Winds gusting to 50 mph.

* WHERE...Southern and Western Mendocino county, including the 
  entire Highway 101 corridor.

* WHEN...From 8 PM this evening to 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail or light snow may create 
  very slippery and dangerous road conditions, which may impact 
  holiday travel in many locations. Strong winds may 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.

&&

$$
182 
WWUS46 KEKA 271259
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
459 AM PST Wed Nov 27 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL DUE TO WINTER WEATHER...

.A winter storm will continue to produce mountain snow and low 
elevation small hail through this afternoon. Winds have generally 
diminished but will remain locally gusty through this morning. 
Major travel impacts will continue today with many chain 
restrictions and delays, particularly across interior mountain 
roadways above 1500 to 2500 feet in elevation.

CAZ102-105-106-111-272100-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
459 AM PST Wed Nov 27 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Heavy snow showers will continue into this afternoon.
  Additional snow accumulation of 2 to 4 inches above 2000 feet,
  with locally higher amounts above 4000 feet.

* WHERE...Interior mountains mainly above 2000 feet in Del Norte,
  Humboldt, and northeast Mendocino Counties for the heaviest 
  accumulations. Lighter accumulations can be expected as low as 
  1500 feet at times.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning commutes. Locally gusty
  winds this morning could cause tree damage and reduced 
  visibility due to blowing snow.

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.

&&

$$

CAZ107-108-272100-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Northern Trinity-Southern Trinity-
459 AM PST Wed Nov 27 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Heavy snow showers will continue into this afternoon.
  Additional snow accumulation up to 3 inches above 2000 feet, 
  with locally higher amounts above 3000 feet. Lighter snow 
  accumulations will be possible at ALL elevations below 2000 
  feet.

* WHERE...Impactful accumulations are expected above 2000 feet in
  elevation. This includes Weaverville, Hayfork, Trinity Center
  and many other nearby communities. Lighter snow accumulations
  will be possible at ALL elevations below 2000 feet.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning commutes. Locally gusty
  winds this morning could cause tree damage and reduced 
  visibility due to blowing snow.

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.

&&

$$

CAZ101-103-104-272100-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
459 AM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Periodic accumulating small hail on roadways expected.
  Additional snow accumulations around 1 inch above 1500 feet in
  the King Range. Locally gusty winds continuing through this
  morning.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties to sea level. This includes 
  Highway 101, and many other roadways.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail may create very slippery and
  dangerous road conditions, which may impact holiday travel in
  many locations.

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.

&&

$$

CAZ109-110-112-113-272100-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Mendocino Coast-Northwestern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
459 AM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Periodic accumulating small hail on roadways expected.
  Additional snow accumulations up to 2 inches above 2000 feet.
  Small hail and light snow will be possible along Highway 101,
  especially near summits. Locally gusty winds this morning.

* WHERE...Southern and Western Mendocino county, including the 
  entire Highway 101 corridor.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail or light snow may create very
  slippery and dangerous road conditions, which may impact holiday
  travel in many locations.

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.

&&

$$
872 
WWUS46 KEKA 271301 
WSWEKA

URGENT - WINTER WEATHER MESSAGE...RESENT
National Weather Service Eureka CA
501 AM PST Wed Nov 27 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL DUE TO WINTER WEATHER...

.A winter storm will continue to produce mountain snow and low 
elevation small hail through this afternoon. Winds have generally 
diminished but will remain locally gusty through this morning. 
Major travel impacts will continue today with many chain 
restrictions and delays, particularly across interior mountain 
roadways above 1500 to 2500 feet in elevation.

CAZ102-105-106-111-272100-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
501 AM PST Wed Nov 27 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Heavy snow showers will continue into this afternoon.
  Additional snow accumulation of 2 to 4 inches above 2000 feet,
  with locally higher amounts above 4000 feet.

* WHERE...Interior mountains mainly above 2000 feet in Del Norte,
  Humboldt, and northeast Mendocino Counties for the heaviest 
  accumulations. Lighter accumulations can be expected as low as 
  1500 feet at times.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning commutes. Locally gusty
  winds this morning could cause tree damage and reduced 
  visibility due to blowing snow.

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.

&&

$$

CAZ107-108-272100-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Northern Trinity-Southern Trinity-
501 AM PST Wed Nov 27 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Heavy snow showers will continue into this afternoon.
  Additional snow accumulation up to 3 inches above 2000 feet, 
  with locally higher amounts above 3000 feet. Lighter snow 
  accumulations will be possible at ALL elevations below 2000 
  feet.

* WHERE...Impactful accumulations are expected above 2000 feet in
  elevation. This includes Weaverville, Hayfork, Trinity Center
  and many other nearby communities. Lighter snow accumulations
  will be possible at ALL elevations below 2000 feet.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along
  interior mountain roads. The hazardous conditions will impact
  holiday travel, in addition to morning commutes. Locally gusty
  winds this morning could cause tree damage and reduced 
  visibility due to blowing snow.

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.

&&

$$

CAZ101-103-104-272100-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
501 AM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Periodic accumulating small hail on roadways expected.
  Additional snow accumulations around 1 inch above 1500 feet in
  the King Range. Locally gusty winds continuing through this
  morning.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties to sea level. This includes 
  Highway 101, and many other roadways.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail may create very slippery and
  dangerous road conditions, which may impact holiday travel in
  many locations.

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.

&&

$$

CAZ109-110-112-113-272100-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Mendocino Coast-Northwestern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
501 AM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Periodic accumulating small hail on roadways expected.
  Additional snow accumulations up to 2 inches above 2000 feet.
  Small hail and light snow will be possible along Highway 101,
  especially near summits. Locally gusty winds this morning.

* WHERE...Southern and Western Mendocino county, including the 
  entire Highway 101 corridor.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail or light snow may create very
  slippery and dangerous road conditions, which may impact holiday
  travel in many locations.

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.

&&

$$
580 
WWUS46 KEKA 272022
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1222 PM PST Wed Nov 27 2019

...SIGNIFICANT IMPACTS TO HOLIDAY TRAVEL DUE TO WINTER WEATHER...

.While snow showers in many areas are expected to gradually
diminish this afternoon, some areas will continue to see bouts of
light accumulating snow above 1500 feet in elevation. In addition,
some lower elevations will also likely see periods of small hail,
potentially accumulating on roadways. However, showers have 
diminished enough and temperatures have warmed enough to cancel 
the Winter Storm Warning in northern Trinity county, and also the 
Winter Weather Advisories in southern and western Mendocino 
Counties. However, Winter Weather headlines will continue in Del 
Norte, Humboldt, southern Trinity and northeastern Mendocino until
at least 2 PM, or until snow showers sufficiently diminish. 

CAZ107-272130-
/O.CAN.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Northern Trinity-
1222 PM PST Wed Nov 27 2019

...WINTER STORM WARNING IS CANCELLED...

Snow showers have diminished in Northern Trinity County, and
temperatures have allowed for melting on roadways. While some
summit passes may continue to be closed or require chains as snow
removal continues, the Winter Storm Warning is no longer warranted
in this area.

$$

CAZ109-110-112-113-272130-
/O.CAN.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Mendocino Coast-Northwestern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
1222 PM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY IS CANCELLED...

While light scattered showers will continue for the next few
hours, including some brief instances of small hail, widespread
accumulations on roadways are not expected in Mendocino County the
remainder of the day. As a result, the Winter Weather Advisory for
coastal areas and the Highway 101 corridor have been cancelled.

$$

CAZ102-105-106-111-272200-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
1222 PM PST Wed Nov 27 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Light to moderate showers will continue into this
  afternoon. Additional snow accumulation of 1 to 4 inches above
  2000 feet.

* WHERE...Interior mountains mainly above 2000 feet in Del Norte,
  Humboldt, and northeast Mendocino Counties for the heaviest 
  accumulations. Lighter accumulations can be expected as low as 
  1500 feet at times.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning commutes. Locally gusty 
  winds this morning could cause tree damage and reduced 
  visibility due to blowing snow.

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.

&&

$$

CAZ108-272200-
/O.CON.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Southern Trinity-
1222 PM PST Wed Nov 27 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Light to moderate showers will continue into this
  afternoon. Additional snow accumulation of 1 to 3 inches above
  2000 feet.

* WHERE...Elevations above roughly 2000 feet in southern and
  southwestern Trinity County. This includes Highway 36.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Travel will be very difficult to impossible along 
  interior mountain roads. The hazardous conditions will impact 
  holiday travel, in addition to morning commutes. Locally gusty 
  winds this morning could cause tree damage and reduced 
  visibility due to blowing snow.

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.

&&

$$

CAZ101-103-104-272200-
/O.CON.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
1222 PM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Periodic accumulating small hail on roadways is possible.
  Additional snow accumulations around 1 inch above 1500 feet in 
  the King Range. Locally gusty winds continuing through this 
  morning.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties to sea level. This includes 
  Highway 101, and many other roadways.

* WHEN...Through 2 PM PST Wednesday.

* IMPACTS...Accumulating small hail may create very slippery and 
  dangerous road conditions, which may impact holiday travel in 
  many locations.

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.

&&

$$
286 
WWUS46 KEKA 272157
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
157 PM PST Wed Nov 27 2019

...WINTER WEATHER HEADLINES WILL EXPIRE AT 2 PM PST...

.While a few light snow showers will be possible for the remainder
of the afternoon in some areas, the intensity of showers has 
diminished considerably. As a result, all of the remaining Winter
Storm Warnings and Winter Weather Advisories will expire at 2 PM
PST. Motorists should continue to use caution as roads may become
icy overnight, and some local summit passes continue to maintain
chain requirements. 

CAZ102-105-106-111-272300-
/O.EXP.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northeastern Mendocino Interior-
157 PM PST Wed Nov 27 2019

...WINTER STORM WARNING WILL EXPIRE AT 2 PM PST THIS AFTERNOON...

Showers will gradually diminish through the afternoon and evening,
allowing the Winter Storm Warning to expire. Motorists are urged
to use caution due to likely icy roads after dark, and also
continue to carry chains when traveling along mountain roads.

$$

CAZ108-272300-
/O.EXP.KEKA.WS.W.0008.000000T0000Z-191127T2200Z/
Southern Trinity-
157 PM PST Wed Nov 27 2019

...WINTER STORM WARNING WILL EXPIRE AT 2 PM PST THIS AFTERNOON...

Showers will gradually diminish through the afternoon and evening,
allowing the Winter Storm Warning to expire. Motorists are urged
to use caution due to likely icy roads after dark, and also
continue to carry chains when traveling along mountain roads.

$$

CAZ101-103-104-272300-
/O.EXP.KEKA.WW.Y.0010.000000T0000Z-191127T2200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
157 PM PST Wed Nov 27 2019

...WINTER WEATHER ADVISORY WILL EXPIRE AT 2 PM PST THIS
AFTERNOON...

Showers will gradually diminish through the afternoon and evening,
reducing the frequency of small hail and allowing the Winter
Weather Advisory to expire. Motorists are urged to use caution 
due to likely icy roads after dark, and also continue to carry 
chains when traveling along mountain roads.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 25, 3:00 AM PSTStorm WarningEKA48 hr
Nov 25, 3:51 AM PSTHigh Wind WarningEKADel Norte, Humboldt, Mendocino, Trinity48 hr
Nov 25, 3:51 AM PSTWind AdvisoryEKAMendocino48 hr
Nov 25, 4:24 AM PSTHigh Surf WarningEKADel Norte, Humboldt, Mendocino50 hr
Nov 25, 9:03 AM PSTGale WarningEKA42 hr
Nov 25, 9:03 AM PSTSmall Craft AdvisoryEKA28 hr

Nearby

Winter Storm Warnings in California, 2019Every winter storm warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.