Alert archive / California / Winter Storm Warnings in 2019

Winter Storm Warning 9, NWS Eureka, CA

November 29, 2019Humboldt County, Mendocino County, Trinity County, California

NWS Eureka, CA issued this winter storm warning at Nov 29, 2019, 12:40 PM PST for Humboldt County, Mendocino County, Trinity County, California. It took effect at Nov 30, 2019, 11:00 AM PST. It was in force for 19 hr. 1 report 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 29, 2019, 12:40 PM PST (20:40 UTC)
In effect from
Nov 30, 2019, 11:00 AM PST
Expired
Dec 1, 2019, 6:27 AM PST
In force
19 hr
Issued by
NWS Eureka, CA

Counties Humboldt County, CA, Mendocino County, CA, Trinity County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 73 km from the middle of the area, began a volume at 20:41 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 30, 9:00 PM PSTSNOW 3.51 Sw Trinity Center, CASNOWFALL SO FAR. CURRENTLY SNOWING STEADILY. STATION ELEVATION: 2565 FT.

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 12:00Z, 8.7 hours before the alert went out and 241 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 2019-11-29Temperature 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 12:00Z on 2019-11-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.193958Sfc1 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
531 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

878 
WWUS46 KEKA 292040
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1240 PM PST Fri Nov 29 2019

...SIGNIFICANT WINTER WEATHER EXPECTED THIS WEEKEND...

.A storm system will approach northwest California on Saturday.
Heavy snow is expected across much of Trinity County above 2000
feet. Portions of interior Humboldt County above 2000 to 3000 
feet may also see snow, however confidence is not high that 
amounts will be sufficient to warrant a winter storm warning at 
this time. Snow levels will initially reside near 1500 feet 
Saturday morning, and then rise to 2500 to 3000 feet through the 
day on Saturday across much of Humboldt and Mendocino counties. 
Snow levels will remain near 2500 feet in Trinity county until 
Sunday afternoon when levels rise to 3500 to 4000 feet.

CAZ107-108-111-300430-
/O.UPG.KEKA.WS.A.0007.191130T1400Z-191201T1800Z/
/O.NEW.KEKA.WS.W.0009.191130T1900Z-191201T1800Z/
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
1240 PM PST Fri Nov 29 2019

...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 10 AM
PST SUNDAY ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 6 to 12 inches. Higher amounts expected above
  3000 feet. Winds gusts to 60 mph possible over exposed ridges.

* WHERE...For much of Trinity County, including Weaverville,
  Hayfork, Trinity Center and many other communities, as well as
  Highways 3, 36, 299 and route 261. 

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.


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.

&&

$$

CAZ105-106-300430-
/O.CON.KEKA.WS.A.0007.191130T1400Z-191201T1800Z/
Northern Humboldt Interior-Southern Humboldt Interior-
1240 PM PST Fri Nov 29 2019

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 6 to 12
  inches possible above 3000 feet.

* WHERE...Northern Humboldt Interior and Southern Humboldt
  Interior above 2000 to 3000 feet. The watch includes Berry 
  Summit.

* WHEN...From Saturday morning through Sunday morning.

* IMPACTS...Travel could be very difficult to impossible.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$
8 follow-up statements
781 
WWUS46 KEKA 300438
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
838 PM PST Fri Nov 29 2019

...SIGNIFICANT WINTER WEATHER EXPECTED THIS WEEKEND...

.A storm system will approach northwest California on Saturday.
Heavy snow is expected across much of Trinity County above
2000 feet. Portions of interior Humboldt County above 2000 to
3000 feet may also see snow, however confidence is not high that
amounts will be sufficient to warrant a winter storm warning at
this time. Snow levels will initially reside near 1500 feet
Saturday morning, and then rise to 2500 to 3000 feet through the
day on Saturday across much of Humboldt and Mendocino counties.
Snow levels will remain near 2500 feet in Trinity county until
Sunday afternoon when levels rise to 3500 to 4000 feet.

CAZ107-108-111-301245-
/O.CON.KEKA.WS.W.0009.191130T1900Z-191201T1800Z/
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
838 PM PST Fri Nov 29 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO
10 AM PST SUNDAY ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow 
  accumulations of 6 to 12 inches. Higher amounts expected above 
  3000 feet. Winds gusts to 60 mph possible over exposed ridges.

* WHERE...For much of Trinity County, including Weaverville, 
  Hayfork, Trinity Center and many other communities, as well as 
  Highways 3, 36, 299 and route 261.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.


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.

&&

$$

CAZ105-106-301245-
/O.CON.KEKA.WS.A.0007.191130T1400Z-191201T1800Z/
Northern Humboldt Interior-Southern Humboldt Interior-
838 PM PST Fri Nov 29 2019

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM PST SATURDAY
THROUGH SUNDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 6 to 12 
  inches possible above 3000 feet.

* WHERE...Northern Humboldt Interior and Southern Humboldt 
  Interior above 2000 to 3000 feet. The watch includes Berry 
  Summit.

* WHEN...From Saturday morning through Sunday morning.

* IMPACTS...Travel could be very difficult.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$
015 
WWUS46 KEKA 301029
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
229 AM PST Sat Nov 30 2019

...SIGNIFICANT WINTER WEATHER EXPECTED THIS WEEKEND...

.A storm system will approach northwest California today. Heavy 
snow is expected across much of Trinity County, as well as 
portions of interior Humboldt County and northeast Mendocino 
County above 2000 to 3000 feet. Heavy snow will be probable at 
highway pass levels this afternoon and evening. Snowfall will 
then dissipate later tonight as precipitation diminishes in 
intensity and snow levels rapidly rise.

CAZ105-106-301830-
/O.UPG.KEKA.WS.A.0007.191130T1400Z-191201T1800Z/
/O.EXA.KEKA.WS.W.0009.191130T1900Z-191201T1800Z/
Northern Humboldt Interior-Southern Humboldt Interior-
229 AM PST Sat Nov 30 2019

...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO
10 AM PST SUNDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 12
  inches, with higher amounts expected for elevations above 3000
  feet. Winds will also gust from 40 to 60 mph across exposed
  ridges.

* WHERE...Northern Humboldt Interior and Southern Humboldt
  Interior Counties. This includes highway 299 at Berry Summit.

* WHEN...From 11 AM this morning to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, carry chains, and also 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.

&&

$$

CAZ107-108-111-301830-
/O.CON.KEKA.WS.W.0009.191130T1900Z-191201T1800Z/
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
229 AM PST Sat Nov 30 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 10 AM PST SUNDAY...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 6 to 12 inches. Higher amounts expected above
  3000 feet. Winds may gust from 40 to 60 mph across exposed 
  ridges.

* WHERE...For much of Trinity County, including Weaverville,
  Hayfork, Trinity Center and many other communities, as well as
  Highways 3, 36, 299 and route 261. Portions of northeastern
  Mendocino County are also included in the warning.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, carry chains, and also 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.

&&

$$
155 
WWUS46 KEKA 301811
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1011 AM PST Sat Nov 30 2019

...SIGNIFICANT WINTER WEATHER EXPECTED THIS WEEKEND...

.A storm system will approach northwest California today. Heavy
snow is expected across much of Trinity County, as well as
portions of interior Humboldt County and northeast Mendocino
County above 2000 to 3000 feet. Heavy snow will be probable at
highway pass levels this afternoon and evening. Snowfall will
then dissipate later tonight as precipitation diminishes in
intensity and snow levels rapidly rise.

CAZ105>108-111-010215-
/O.CON.KEKA.WS.W.0009.191130T1900Z-191201T1800Z/
Northern Humboldt Interior-Southern Humboldt Interior-
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
1011 AM PST Sat Nov 30 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SUNDAY...

* WHAT...Heavy snow expected above 2000 feet. Total snow 
  accumulations of 6 to 12 inches. Higher amounts expected above 
  3000 feet. Winds may gust from 40 to 60 mph across exposed 
  ridges.

* WHERE...For much of Trinity County, including Weaverville, 
  Hayfork, Trinity Center and many other communities, as well as 
  Highways 3, 36, 299 and route 261. Portions of northeastern 
  Mendocino County are also included in the warning.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.

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.

&&

$$
345 
WWUS46 KEKA 302209
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
209 PM PST Sat Nov 30 2019

...SIGNIFICANT WINTER WEATHER EXPECTED THIS WEEKEND...

.A storm system will bring a frontal boundary across northwest 
California today. Heavy snow is expected across much of Trinity 
County, as well as portions of interior Humboldt County and 
northeast Mendocino County above 2000 to 3000 feet. Heavy snow 
will be probable at highway pass levels this afternoon and 
overnight. Snowfall will then dissipate later tonight as and snow 
levels will rapidly rise.

CAZ107-108-010615-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
Northern Trinity-Southern Trinity-
209 PM PST Sat Nov 30 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY
ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 6 to 12 inches. Higher amounts expected above
  3500 feet. Winds may gust from 40 to 60 mph across exposed 
  ridges.

* WHERE...For much of Trinity County, including Weaverville,
  Hayfork, Trinity Center and many other communities, as well as
  Highways 3, 36, and 299. This includes Buckhorn and Oregon
  Mountain Summits on Highway 299.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.

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.

&&

$$

CAZ105-106-111-010615-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
Northern Humboldt Interior-Southern Humboldt Interior-
Northeastern Mendocino Interior-
209 PM PST Sat Nov 30 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY
ABOVE 3000 FEET...

* WHAT...Heavy snow with 5 to 8 inches expected above 3000 feet.
  Lower amounts of 2 to 4 inches expected from 2,500 to 3,000
  feet. Higher amounts expected above 4000 feet. Winds may gust 
  from 40 to 60 mph across exposed ridges.

* WHERE...Mainly rural areas above 3,000 feet. Local amounts down
  to 2,500 feet which may impact Berry Summit on. Portions of
  northeastern Mendocino County are also included in the warning.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Prepare for possible power
outages. 

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

&&

$$
538 
WWUS46 KEKA 010619
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1019 PM PST Sat Nov 30 2019

...SIGNIFICANT WINTER WEATHER EXPECTED THIS WEEKEND...

.A storm system will continue to bring periods of heavy snow
across much of Trinity County tonight, as well as portions of
interior Humboldt County and northeast Mendocino County above 2000
to 3000 feet. Many highway passes will be snow-covered and
treacherous overnight. Precipitation will taper off late tonight
or early Sunday morning. Additionally, snow levels will rise above
most pass levels on Sunday, resulting in much better road
conditions.


CAZ105-106-011200-
/O.EXT.KEKA.WS.W.0009.000000T0000Z-191201T1200Z/
Northern Humboldt Interior-Southern Humboldt Interior-
1019 PM PST Sat Nov 30 2019

...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 AM PST SUNDAY ABOVE
3000 FEET...

* WHAT...Heavy snow with 5 to 8 inches expected above 3000 feet. 
  Lower amounts of 2 to 4 inches expected from 2,500 to 3,000 
  feet. Higher amounts expected above 4000 feet. Winds may gust 
  from 40 to 60 mph across exposed ridges.

* WHERE...Mainly rural areas above 3,000 feet. Several inches
  possible down to 2,500 feet which will impact Berry Summit on
  Highway 299. 

* WHEN...Until 4 AM PST Sunday.

* IMPACTS...Travel could be difficult.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Prepare for possible power
outages.

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

&&

$$

CAZ107-108-011430-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
Northern Trinity-Southern Trinity-
1019 PM PST Sat Nov 30 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY
ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow 
  accumulations of 6 to 12 inches. Higher amounts expected above 
  3500 feet. Winds may gust from 40 to 60 mph across exposed 
  ridges.

* WHERE...For much of Trinity County, including Weaverville, 
  Hayfork, Trinity Center and many other communities, as well as 
  Highways 3, 36, and 299. This includes Buckhorn and Oregon 
  Mountain Summits on Highway 299.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.


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.

&&

$$

CAZ111-011430-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
Northeastern Mendocino Interior-
1019 PM PST Sat Nov 30 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY
ABOVE 3000 FEET...

* WHAT...Heavy snow with 5 to 8 inches expected above 3000 feet. 
  Lower amounts of 2 to 4 inches expected from 2,500 to 3,000 
  feet. Higher amounts expected above 4000 feet. Winds may gust 
  from 40 to 60 mph across exposed ridges.

* WHERE...Mainly rural areas above 3,000 feet.

* WHEN...From 11 AM Saturday to 10 AM PST Sunday.

* IMPACTS...Travel could be very difficult to impossible.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Prepare for possible power
outages.

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

&&

$$
816 
WWUS46 KEKA 011019
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
219 AM PST Sun Dec 1 2019


CAZ111-011200-
/O.EXT.KEKA.WS.W.0009.000000T0000Z-191201T1200Z/
Northeastern Mendocino Interior-
219 AM PST Sun Dec 1 2019

...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 AM PST EARLY THIS
MORNING ABOVE 3000 FEET...

* WHAT...An additional 2 to 4 inches of snow expected above 3000
  feet early this morning.

* WHERE...Mainly rural areas above 3000 feet.

* WHEN...Until 4 AM PST early this morning.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Prepare for possible power
outages. 

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

&&

$$

CAZ107-108-011800-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
Northern Trinity-Southern Trinity-
219 AM PST Sun Dec 1 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 6 to 12 inches. Higher amounts expected above
  3500 feet.

* WHERE...Much of Trinity County, including Weaverville, Hayfork,
  Trinity Center and many other communities, as well as Highways 
  3, 36, and 299. This includes Buckhorn and Oregon Mountain 
  Summits on Highway 299.

* WHEN...Through 10 AM PST this morning.

* IMPACTS...Travel could be very difficult to impossible.

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.

&&

$$

CAZ105-106-011200-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1200Z/
Northern Humboldt Interior-Southern Humboldt Interior-
219 AM PST Sun Dec 1 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST EARLY
THIS MORNING ABOVE 3000 FEET...

* WHAT...An additional 1 to 3 inches of snow early this morning.

* WHERE...Mainly rural areas above 3000 feet. Several inches
  possible down to 2500 feet which will impact Berry Summit on 
  Highway 299.

* WHEN...Until 4 AM PST Sunday.

* IMPACTS...Travel could be difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Prepare for possible power
outages. 

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

&&

$$
598 
WWUS46 KEKA 011147
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
347 AM PST Sun Dec 1 2019



CAZ105-106-111-011300-
/O.EXP.KEKA.WS.W.0009.000000T0000Z-191201T1200Z/
Northern Humboldt Interior-Southern Humboldt Interior-
Northeastern Mendocino Interior-
347 AM PST Sun Dec 1 2019

...WINTER STORM WARNING WILL EXPIRE AT 4 AM PST EARLY THIS
MORNING ABOVE 3000 FEET...

$$

CAZ107-108-011800-
/O.CON.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
Northern Trinity-Southern Trinity-
347 AM PST Sun Dec 1 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 2000 FEET...

* WHAT...An additional 1 to 4 inches of snow expected during the
  morning. Storm total snow accumulations of 6 to 12 inches, with
  higher amounts expected above 3500 feet.

* WHERE...Much of Trinity County, including Weaverville, Hayfork,
  Trinity Center and many other rural communities, as well as
  Highways 3, 36, and 299.

* WHEN...Through 10 AM PST this morning.

* IMPACTS...Travel could be very difficult to impossible.

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.

&&

$$
727 
WWUS46 KEKA 011427
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
627 AM PST Sun Dec 1 2019



CAZ107-108-011800-
/O.CAN.KEKA.WS.W.0009.000000T0000Z-191201T1800Z/
/O.NEW.KEKA.WW.Y.0011.191201T1427Z-191201T1800Z/
Northern Trinity-Southern Trinity-
627 AM PST Sun Dec 1 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...A winter weather advisory is in effect this morning due
  to chain controls on highway 3, 36, and 299.

* WHERE...Northern Trinity and Southern Trinity Counties,
  including highway 3, 36, and 299.

* WHEN...Until 10 AM PST this morning.

* IMPACTS...Plan on slippery road conditions. Carry chains if
  traveling on highway 3, 36, or 299.

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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 29, 2:11 AM PSTHigh Wind WatchEKADel Norte, Humboldt, Mendocino, Trinity24 hr
Nov 29, 2:48 AM PSTGale WarningEKA60 hr
Nov 29, 2:48 AM PSTSmall Craft AdvisoryEKA34 hr
Nov 29, 2:48 AM PSTStorm WarningEKA42 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.