Winter Storm Watch 6, NWS Eureka, CA

710 
WWUS46 KEKA 251744
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
944 AM PST Sat Feb 25 2017

Light snow is winding down throughout the region today, allowing
current Winter Weather Advisories to expire .Additional snow 
accumulations can be expected Sunday through Monday across much of
the region, with the heaviest snow totals expected across 
interior Del Norte and Northern Humboldt counties.

CAZ102-105-260145-
/O.EXP.KEKA.WW.Y.0011.000000T0000Z-170225T1800Z/
/O.CON.KEKA.WS.A.0006.170226T1800Z-170227T0600Z/
Del Norte Interior-Northern Humboldt Interior-
944 AM PST Sat Feb 25 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH SUNDAY EVENING ABOVE 1500 FEET...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM PST THIS
MORNING...

SNOW ACCUMULATIONS...4 to 7 inches above 1500 feet.

LOCATIONS IMPACTED...Higher elevations of Gasquet...Willow 
Creek...Orleans...and other locations throughout interior Humboldt
and Del Norte counties.

HIGHWAYS IMPACTED...Hwy 199...Hwy 299...HWY 96.

FOR A DETAILED VIEW OF THE HAZARD AREA...visit
http://www.weather.gov/eureka/hazards

Precautionary/preparedness actions...

A Winter Storm Watch means there is a potential for significant
snow,sleet,or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

CAZ104-106-108-110-251845-
/O.EXP.KEKA.WW.Y.0011.000000T0000Z-170225T1800Z/
Southwestern Humboldt-Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-
944 AM PST Sat Feb 25 2017

...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM PST THIS
MORNING...

Snow has diminished across most of the region, with some light
snow remaining in parts of the King Range and in the hills of
Mendocino county. Thus, the Winter Weather Advisory has been
allowed to expire. Additional snow accumulations can be expected
Sunday. 

$$

554 
WWUS46 KEKA 252240
WSWEKA

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
240 PM PST Sat Feb 25 2017

Additional snow accumulations can be expected Sunday through 
Monday across much of the region, with the heaviest snow totals 
expected across interior Del Norte and Northern Humboldt counties
above 1500 feet in elevation. Heaviest snow expected to fall
Sunday afternoon and evening.

CAZ102-105-260645-
/O.UPG.KEKA.WS.A.0006.170226T1800Z-170227T0600Z/
/O.NEW.KEKA.WW.Y.0012.170226T1600Z-170227T1200Z/
Del Norte Interior-Northern Humboldt Interior-
240 PM PST Sat Feb 25 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM SUNDAY TO 4 AM PST
MONDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

The National Weather Service in Eureka has issued a Winter
Weather Advisory for Snow...which is in effect from 8 AM Sunday 
to 4 AM PST Monday. The Winter Storm Watch is no longer in effect.

SNOW ACCUMULATIONS...4 to 7 inches above 2500 feet, 1 to 4 inches
between 1500 and 2500 feet, Trace amounts to 1000 feet.

LOCATIONS IMPACTED...High elevations surrounding Gasquet, 
Orleans, and Willow Creek, the Bald Hills region, and other rural
locations above 1500 feet.

HIGHWAYS IMPACTED...Hwy 199 near Collier Tunnel, Hwy 299 at Lord 
Ellis and Berry Summits, Bald Hills Road, light snow possible 
near Prairie Creek Summit on Hwy 101 and along highway 96.

FOR A DETAILED VIEW OF THE HAZARD AREA...visit
http://www.weather.gov/eureka/hazards

Precautionary/preparedness actions...

A Winter Weather Advisory means that periods of snow,sleet,or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities,and use caution while
driving.

&&

$$

CAZ106-260645-
/O.NEW.KEKA.WW.Y.0012.170226T1600Z-170227T1200Z/
Southern Humboldt Interior-
240 PM PST Sat Feb 25 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM SUNDAY TO 4 AM PST
MONDAY...

The National Weather Service in Eureka has issued a Winter
Weather Advisory for Snow...which is in effect from 8 AM Sunday 
to 4 AM PST Monday. The Winter Storm Watch is no longer in effect.

SNOW ACCUMULATIONS...3 to 5 inches above 2500 feet, 1 to 3 inches
from 1500 to 2500 feet, Trace amounts to 1000 feet.

LOCATIONS IMPACTED...Kneeland, Fickle Hill, Dinsmore, and other 
rural locations above 1500 feet in elevation. Brief light snow 
possible at lower elevations. 

HIGHWAYS IMPACTED...Highway 36 east of Bridgeville, other rural
roadways above 1500 feet. 

FOR A DETAILED VIEW OF THE HAZARD AREA...visit
http://www.weather.gov/eureka/hazards

Precautionary/preparedness actions...

A Winter Weather Advisory means that periods of snow,sleet,or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities,and use caution while
driving.

&&

$$

CAZ107-108-260645-
/O.NEW.KEKA.WW.Y.0012.170226T1600Z-170227T1200Z/
Northern Trinity-Southern Trinity-
240 PM PST Sat Feb 25 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM SUNDAY TO 4 AM PST
MONDAY...

The National Weather Service in Eureka has issued a Winter
Weather Advisory for Snow...which is in effect from 8 AM Sunday 
to 4 AM PST Monday. The Winter Storm Watch is no longer in effect. 

SNOW ACCUMULATIONS...1 to 4 inches above 1500 feet. Highest totals
above 2500 feet. Trace amounts to 1000 feet. 

LOCATIONS IMPACTED...Weaverville, Trinity 
Center, Hayfork, Ruth, Forest Glen, Peanut, Hettenshaw, Zenia.

HIGHWAYS IMPACTED...Highway 299 at Oregon Mountain and Buckhorn
Summits, most of Highways 3 and 36, other rural roadways above 
1500 feet.

FOR A DETAILED VIEW OF THE HAZARD AREA...visit
http://www.weather.gov/eureka/hazards

Precautionary/preparedness actions...

A Winter Weather Advisory means that periods of snow,sleet,or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities,and use caution while
driving.

&&

$$

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
924 PM PST Fri Feb 24 2017

.SYNOPSIS...Unsettled weather will continue for the next few days
as a series of cold low pressure systems impacts Northwest
California. Scattered showers will continue periodically through
Monday...with snow levels to as low as 1000 feet.

&&

.UPDATE...Surface obs and social media reports indicated snow
falling in Gasquet. Updated the forecast to lower snow levels in
interior Del Norte county and northern Humboldt county. Snow may
fall as low as 500 feet. Little to no accumulation is expected
below 1000 feet and less than an inch is from 1000 to 1500 feet.
The winter weather advisory remains at 1500 feet. MKK

&&

.PREV DISCUSSION... /issued 406 PM PST Fri Feb 24 2017/

DISCUSSION...The first of these systems is currently centered
off the coast of Oregon at approximately 45 N and 128 W, and
slowly drifting southwards toward the California waters. While the
low center is still quite a ways away, the nose of an upper level
jet streak is currently moving onto the coast of Northwest CA,
and is providing a bit of forcing and upper level support for
shower development. This is in addition to the increasing thermal
instability, which is being driven by cold air aloft moving across
the relatively warm ocean waters. Considering that the airmass
already in place ahead of this system was somewhat cold to begin
with, the showers that have moved onto the Humboldt/Del Norte
coast this afternoon have exhibited relatively low snow levels,
with light snow falling to roughly 2000 to 2500 feet in elevation.
Given that the coldest air aloft has yet to arrive, and that
surface temperatures will naturally drop after sunset, snow levels
are expected to fall even lower overnight, possibly to as low as
around 1500 feet and periodically lower in some places. Meanwhile,
scattered to numerous showers will likely continue through the
night and tomorrow morning as the low passes along the coast,
eventually transitioning southwards into Mendocino county
tomorrow. Snow totals continue to look a bit lighter than
originally anticipated. However, light accumulations are still
expected through at least tomorrow morning at low elevations and
along many of the busier highway passes throughout the
region...particularly across Humboldt and Del Norte counties.

Showers will diminish from north to south through the day tomorrow
as the low pressure center moves south of the area and a
shortwave ridge moves overhead. However, another more potent storm
system will move in quickly behind it on Sunday, bringing with it
another round of showers and low elevation snow accumulations.
While there remains some uncertainty as to how much snow will fall
during this next round, current data indicates that this second
storm will be the stronger of the two with slightly higher
accumulations.

Showers will continue through Monday morning but gradually
diminish by Tuesday as a larger upper ridge gradually builds
across the west coast. This ridge will continue to build through
the end of the week, resulting in a gradual warming and drying
trend. /BRC

AVIATION...A cold and unstable air mass sliding southward
offshore the coast tonight will bring on and off showers to the
coastal terminals. Periods of low vsbys and ceilings are expected
in moderate to heavy showers. Conditions should improve on
Saturday as the low drifts south of the area. At UKI, conditions
will most likely remain vfr tonight, though some showers and
clouds may push over the coastal mountains late tonight and
produce brief MVFR ceilings.

MARINE...A cold and unstable air mass over Oregon offshore
waters will move southward tonight. Scattered showers and isolated
thunderstorms are expected tonight over our waters. Winds for the
most part with this low will be relatively weak. A surface trough
will develop offshore later tonight and E-SE gusts around 20-25kt
are expected. The low will drift south of Cape Mendo on Sat.
Fresh ESE breezes are possible for Mendo waters. Winds will slowly
shift around to the N-NW behind the low late on Sat before
another storm system drops down from the Northwest on Sunday.
Winds with this second storm will be slightly stronger, mainly
from the west and northwest after frontal passage. Current
indications are for winds to be borderline for an advisory.

A long period WNW swell will continue to decay through Sat. Short
period wave energy will also decay through Sat. Seas look to
remain under our criteria for an advisory. Another long period WNW
swell group will arrive Saturday night into Sunday. Even though
there will be short period wave energy present, there will be a
small risk for sneaker waves Sunday morning. Granted weather
conditions will not be great for going to the beach on Sunday,
with more rain and show knocking on our door steps. The NW swell
should intermingle with shorter period wave energy by Sunday night
and produce combined seas around 10 ft. An advisory for small
craft may be necessary.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Winter Weather Advisory until 4 PM PST Saturday for CAZ102-
     104>106-108-110.

NORTHWEST CALIFORNIA COASTAL WATERS...None.
&&

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http://www.facebook.com/NWSEureka
http://www.twitter.com/nwseureka

For forecast zone information
see the forecast zone map online:
http://www.weather.gov/eureka/zonemap.png

Hazardous Weather Outlook
National Weather Service Eureka CA
410 PM PST Fri Feb 24 2017

CAZ101-103-109-260015-
Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast-
410 PM PST Fri Feb 24 2017

This hazardous weather outlook is for northwest California.

.DAY ONE...Tonight.

Rain showers will continue along the coast overnight. Rain will turn
to snow above 1500 feet overnight, where light accumulations will be
possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Coastal rain showers and light snow above 1500 feet are forecast to
dissipate during Saturday afternoon. Additional high elevation snow
will be possible Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.

For further details please refer to NOAA Weather Radio or
weather.gov/eureka.

CAZ102-104>106-108-110-260015-
Del Norte Interior-Southwestern Humboldt-Northern Humboldt Interior-
Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-
410 PM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM PST SATURDAY...

This hazardous weather outlook is for northwest California.

.DAY ONE...Tonight.

Showers will continue overnight. Rain will turn to snow above 1500
feet overnight, where light accumulations of 1 to 4 inches will be
possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

A Winter Weather Advisory IS CURRENTLY IN EFFECT.

Snow showers will dissipate during late Saturday afternoon.
Another round of accumulating snowfall is forecast to occur Sunday
and Monday.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.

For further details please refer to NOAA Weather Radio or
weather.gov/eureka.

CAZ107-111>113-260015-
Northern Trinity-Northeastern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
410 PM PST Fri Feb 24 2017

This hazardous weather outlook is for northwest California.

.DAY ONE...Tonight.

Scattered showers will continue overnight. Rain will turn to snow
above 1500 feet overnight, where light accumulations will be
possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Light snow showers occurring for elevations above 1500 feet will
dissipate during Saturday afternoon. Another round of high elevation
snowfall will be possible Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.

For further details please refer to NOAA Weather Radio or
weather.gov/eureka.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
953 PM PST FRI FEB 24 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0951 PM     SNOW             7 SW TRINITY CENTER     40.91N 122.78W
02/24/2017  E0.5 INCH        TRINITY            CA   TRAINED SPOTTER

            .

&&

WI