weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Winter Storm Warning


URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
1001 PM PST Thu Jan 18 2018

CAZ072-NVZ002-191400-
/O.CON.KREV.WS.W.0002.000000T0000Z-180120T0000Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline,
and Incline Village
1001 PM PST Thu Jan 18 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY...

* WHAT...Moderate to occasionally heavy snow occurring at the
  higher elevations with light rain/snow occurring below 7000
  feet. Plan on difficult travel conditions. Expect damage to
  trees and power lines as well. Below 7000 feet, total snow
  accumulations of 4 to 7 inches are expected, with localized
  amounts up to 10 inches along the west shores of Lake Tahoe.
  Above 7000 feet, 10 to 18 inches with localized amounts up to 2
  feet are expected.

* WHERE...Greater Lake Tahoe Area.

* WHEN...Until 4 PM PST Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid travel if possible, you could be stuck in your vehicle for
many hours. If you must travel, prepare for long delays and carry
an emergency kit with extra food, water and clothing. If you stay
home, have a backup plan in case of power outages. The latest
road conditions can be obtained by calling 5 1 1.

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
327 PM PST Thu Jan 18 2018

...Heavy Snow Possible Over The Mountains through Friday...

.A cold Pacific storm system will move through interior NorCal through
Friday. Snow levels will lower rapidly with this storm, dropping
to 3000 to 4000 feet tonight and 2500 to 3500 feet on Friday. In
addition, gusty winds during the storm may bring poor
visibilities.

CAZ068-069-191200-
/O.CON.KSTO.WS.W.0001.000000T0000Z-180120T0000Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
327 PM PST Thu Jan 18 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY
ABOVE 4000 FEET...

* WHAT...Heavy snow expected. Plan on difficult travel conditions.
  Tree branches could fall as well. Additional snow accumulations
  of 6 to 12 inches, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope
  Northern Sierra Nevada, including I80 and Highway 50.

* WHEN...Until 4 PM Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. 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 you are
calling from can be obtained by calling 5 1 1.

$$


High Surf Warning


Coastal Hazard Message
National Weather Service San Francisco Bay Area
1203 PM PST Thu Jan 18 2018

...Very large swell will continue to impact the coast through at
least Friday afternoon...

.A strong storm system over the eastern Pacific is generating a
very large westerly swell. The large and dangerous swell is
expected to continue through Friday afternoon, with dangerous surf
likely continuing into the weekend.

CAZ006-505-509-191100-
/O.CON.KMTR.SU.W.0001.000000T0000Z-180120T0000Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-
1203 PM PST Thu Jan 18 2018

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY...

* WAVES AND SURF...Large westerly swell up to 18 to 22 feet with
  a period of 18 to 20 seconds through Friday.

* TIMING...Now through 4PM PST Friday.

* IMPACTS...Extreme wave run up is expected with these waves
  with long lulls in between wave sets, which will increase the
  risk of being washed into the sea by a wave. Expect large and
  dangerous surf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous...battering waves
will pound the shoreline. This will result in deadly rip
currents. Remember, never turn your back to the ocean!

&&

$$


Gale Warning


Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
154 AM PST Fri Jan 19 2018

California waters-
Inner waters from  60 nm to 150 nm offshore.
Outer waters from 150 nm to 250 nm offshore.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

PZZ820-192130-
Point St. George to Point Arena between 60 nm and 150 nm
offshore-
154 AM PST Fri Jan 19 2018

...GALE WARNING...

.TODAY...W to NW winds 10 to 20 kt. Seas 16 to 22 ft. Rain, then
a chance of showers and slight chance of TSTMs.
.TONIGHT...NW winds 10 to 20 kt. Seas subsiding to 14 to 18 ft.
Chance of showers.
.SAT...NW winds 10 to 20 kt, becoming W to SW. Seas 13 to 16 ft.
Slight chance of showers.
.SAT NIGHT...SW winds 15 to 25 kt, becoming S to SW 25 to 35 kt.
Seas 10 to 16 ft. Scattered showers.
.SUN...S to SW winds 25 to 35 kt, becoming W to SW 20 to 30 kt.
Seas 12 to 20 ft.
.SUN NIGHT...W to NW winds diminishing to 10 to 20 kt, then
becoming W 5 to 15 kt. Seas becoming 14 to 18 ft.
.MON...W to NW winds 5 to 10 kt, becoming variable. Seas 12 to
14 ft.
.MON NIGHT...S winds 5 to 15 kt, increasing to 20 to 30 kt. Seas
9 to 12 ft.
.TUE...S to SW winds 20 to 30 kt. Seas 9 to 12 ft.
.TUE NIGHT...S to SW winds 15 to 25 kt. Seas 9 to 12 ft.

$$


Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1041 PM PST Thu Jan 18 2018

...Snow above 2500 feet tonight through Friday night...

.A storm system will bring rain and snow to the area tonight
through Friday night. Snow levels Thursday night will fall to 2,
500 feet resulting in accumulating snow at pass level.

CAZ102-105-106-191445-
/O.CON.KEKA.WW.Y.0001.000000T0000Z-180120T0300Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
1041 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST
FRIDAY ABOVE 3000 FEET...

* WHAT...Snow occurring. Additional snow accumulations of 3 to 7
  inches above 3,000 feet, with localized amounts of 8 to 12
  inches at higher elevations. Up to 2 inches is possible as low
  as 2,000 feet.

* WHERE...Del Norte Interior...mainly rural roads with up to an
  inch possible on Hwy 199. Northern and Southern Humboldt
  Interior County...highways impacted include Hwy 299 at Berry
  Summit and Hwy 36 near Dinsmore.

* WHEN...Until 7 PM Friday.

* ADDITIONAL DETAILS...Slow down, allow extra time and be
  prepared for changing conditions. Check the latest forecasts
  and call 1-800-427-7623 for current road conditions and chain
  requirements before traveling. Be alert for rock slides in
  mountainous terrain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.

For a detailed view of the hazard area visit:
http://www.wrh.noaa.gov/map/?wfo=eka

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Eureka CA
1041 PM PST Thu Jan 18 2018

...Snow above 2500 feet tonight through Friday night...

.A storm system will bring rain and snow to the area tonight
through Friday night. Snow levels Thursday night will fall to 2,
500 feet resulting in accumulating snow at pass level.

CAZ107-108-191445-
/O.CON.KEKA.WW.Y.0001.000000T0000Z-180120T0300Z/
Northern Trinity-Southern Trinity-
1041 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST
FRIDAY ABOVE 3000 FEET...

* WHAT...Snow occurring. Plan on slippery road conditions. Total
  snow accumulations of 2 to 4 inches above 3,000 feet with
  localized amounts up to 8 inches.

* WHERE...Trinity County. Highways impacted include Hwy 3 and Hwy
  299 at Buckhorn Summit and Oregon Mountain.

* WHEN...Until 7 PM Friday.

* ADDITIONAL DETAILS...Slow down, allow extra time and be
  prepared for changing conditions. Check the latest forecasts
  and call 1-800-427-7623 for current road conditions and chain
  requirements before traveling. Be alert for rock slides in
  mountainous terrain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.

For a detailed view of the hazard area visit:
http://www.wrh.noaa.gov/map/?wfo=eka

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
1001 PM PST Thu Jan 18 2018

CAZ071-191400-
/O.CON.KREV.WW.Y.0003.000000T0000Z-180119T1800Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Portola and Susanville
1001 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...

* WHAT...Light to moderate snow occurring. Plan on slippery road
  conditions. Damage to trees and power lines is possible. West of
  Highway 395, total snow accumulations of 2 to 5 inches are
  expected, with localized amounts up to 8 inches. East of Highway
  395, up to 3 inches of snow are expected.

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...Until 10 AM PST Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during
periods of high traffic volume. Be sure to allow extra time to
reach your destination. Leave extra space between vehicles since
it takes longer to stop on slick roadways. The latest road
conditions can be obtained by calling 5 1 1.

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
748 PM PST Thu Jan 18 2018

...Mountain snow expected through Friday...

.Snow will continue tonight, with snow levels dropping to 3000
feet. This will continue to impact travel over the passes in the
Cascade and Siskiyou mountains, in southern Modoc County, and in
eastern Klamath County tonight and Friday. There will be a break
on Saturday but another storm will bring more snow to the
mountains Sunday.

CAZ085-191200-
/O.CON.KMFR.WW.Y.0001.000000T0000Z-180119T1800Z/
Modoc County-
Including the cities of Alturas, Canby, and Likely
748 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...

* WHAT...Snow occurring. Plan on slippery road conditions.
  Additional snow accumulations of 1 to 3 inches, with localized
  amounts up to 5 inches, are expected.

* WHERE...Hwy 395 from Alturas to Likely, Hwy 139 from Canby to
  Adin, and Hwy 299 including Cedar Pass.

* WHEN...Until 10 AM Friday. The heaviest snowfall rates will
  occur now through late tonight.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/HAZARD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and
  limited visibilities.

* See www.quickmap.dot.ca.gov for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow
  will cause travel difficulties.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
748 PM PST Thu Jan 18 2018

...Mountain snow expected through Friday...

.Snow will continue tonight, with snow levels dropping to 3000
feet. This will continue to impact travel over the passes in the
Cascade and Siskiyou mountains, in southern Modoc County, and in
eastern Klamath County tonight and Friday. There will be a break
on Saturday but another storm will bring more snow to the
mountains Sunday.

ORZ027-028-191200-
/O.CON.KMFR.WW.Y.0001.000000T0000Z-180119T1800Z/
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-
Including the city of Diamond Lake
748 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...

* WHAT...Snow occurring. Plan on difficult travel conditions.
  Additional snow accumulations of 4 to 7 inches expected.

* WHERE...South Central Oregon Cascades and Siskiyou Mountains and
  Southern Oregon Cascades, including Hwy 140, Hwy 62 between
  Union Creek and Crater Lake, and portions of Hwy 66.

* WHEN...Until 10 AM Friday. The heaviest snowfall rates will be
  between now and midnight.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/HAZARD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and
  limited visibilities.

* See https://www.tripcheck.com for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow
  will cause travel difficulties.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
748 PM PST Thu Jan 18 2018

...Mountain snow expected through Friday...

.Snow will continue tonight, with snow levels dropping to 3000
feet. This will continue to impact travel over the passes in the
Cascade and Siskiyou mountains, in southern Modoc County, and in
eastern Klamath County tonight and Friday. There will be a break
on Saturday but another storm will bring more snow to the
mountains Sunday.

CAZ080-191200-
/O.CON.KMFR.WW.Y.0001.000000T0000Z-180119T1800Z/
Western Siskiyou County-
748 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...

* WHAT...Snow occurring. Plan on difficult travel conditions.
  Additional snow accumulations of 4 to 7 inches, with localized
  amounts up to 10 inches, are expected.

* WHERE...Western Siskiyou County.

* WHEN...Until 10 AM Friday. The heaviest snowfall rates will
  occur now through late tonight.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/HAZARD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and
  limited visibilities.

* See www.quickmap.dot.ca.gov for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow
  will cause travel difficulties.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
748 PM PST Thu Jan 18 2018

...Mountain snow expected through Friday...

.Snow will continue tonight, with snow levels dropping to 3000
feet. This will continue to impact travel over the passes in the
Cascade and Siskiyou mountains, in southern Modoc County, and in
eastern Klamath County tonight and Friday. There will be a break
on Saturday but another storm will bring more snow to the
mountains Sunday.

ORZ030-191200-
/O.EXA.KMFR.WW.Y.0001.000000T0000Z-180119T1800Z/
Northern and Eastern Klamath County and Western Lake County-
Including the city of Bly
748 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST FRIDAY...

* WHAT...Snow occurring. Plan on slippery road conditions and
  reduced visibility. Additional snow accumulations of 1 to 3
  inches, with localized amounts up to 5 inches expected.

* WHERE...Hwy 140 near Bly.

* WHEN...Until 10 AM Friday. The heaviest snowfall rates will
  occur between now and midnight.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/HAZARD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and
  limited visibilities.

* See https://www.tripcheck.com for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow
  will cause travel difficulties.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
327 PM PST Thu Jan 18 2018

...Heavy Snow Possible Over The Mountains through Friday...

.A cold Pacific storm system will move through interior NorCal through
Friday. Snow levels will lower rapidly with this storm, dropping
to 3000 to 4000 feet tonight and 2500 to 3500 feet on Friday. In
addition, gusty winds during the storm may bring poor
visibilities.

CAZ013-063-191200-
/O.CON.KSTO.WW.Y.0002.180119T0300Z-180120T0000Z/
Shasta Lake Area / Northern Shasta County-
Mountains Southwestern Shasta County to Northern Lake County-
327 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 4 PM PST FRIDAY ABOVE 4000 FEET...

* WHAT...Snow expected. Plan on slippery road conditions. Total
  snow accumulations of 3 to 6 inches are expected.

* WHERE...Shasta Lake Area / Northern Shasta County and
  Mountains Southwestern Shasta County to Northern Lake County.

* WHEN...7 PM today to 4 PM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$


High Surf Advisory


Coastal Hazard Message
National Weather Service Eureka CA
1055 PM PST Thu Jan 18 2018

CAZ101>105-109-191900-
/O.NEW.KEKA.SU.Y.0001.180119T0655Z-180119T1900Z/
Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast-
Southwestern Humboldt-Northern Humboldt Interior-Mendocino Coast-
1055 PM PST Thu Jan 18 2018

...HIGH SURF ADVISORY IN EFFECT UNTIL 11 AM PST FRIDAY...

The National Weather Service in Eureka has issued a High Surf
Advisory...which is in effect until 11 AM PST Friday.

* WAVES AND SURF...Breaking waves from 20 to 27 feet along west
  and northwest facing beaches.

* IMPACTS...Large breaking waves along the coast will lead to
  increased wave run-up on beaches with waves topping and washing
  over large rocks and jetties. These large waves can be erratic
  and unpredictable. Use extra caution near the surf zone as these
  large waves will be capable of sweeping people into the frigid
  and turbulent ocean water. Mariners traversing the bar are urged
  to exercise extreme caution especially during max ebb which is
  predicted to occur between 1:40 AM and 6:50 AM Friday...or stay
  in port until the threat subsides.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Advisory Means That High Surf Will Affect Beaches In
The Advisory area, producing rip currents and localized beach
erosion.

&&

$$

Coastal Hazard Message
National Weather Service Medford OR
230 PM PST Thu Jan 18 2018

...Extremely high and dangerous surf conditions through this
   evening...
...Surf will remain high tonight through Friday night...

ORZ021-022-191200-
/O.NEW.KMFR.SU.Y.0003.180119T0700Z-180120T1200Z/
/O.CON.KMFR.SU.W.0001.000000T0000Z-180119T0700Z/
South Central Oregon Coast-Curry County Coast-
230 PM PST Thu Jan 18 2018

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 11 PM PST THIS
   EVENING...
...HIGH SURF ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 4 AM
   PST SATURDAY...

The National Weather Service in Medford has issued a High Surf
Advisory...which is in effect from 11 PM this evening to 4 AM PST
Saturday.

* Waves and Surf...Breaker heights 30 to 35 ft will diminish to 23
  to 25 feet Friday morning, then to less than 20 feet by Saturday
  morning.

* Impacts...Waves will run up much higher on the beaches than
  normal. These waves will be powerful and can sweep people off
  jetties and other exposed rocks. They can also easily move
  large logs and other beach debris. Bar crossings and the surf
  zone will be especially dangerous due to strong currents and
  breaking waves.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/HAZARD

Precautionary/preparedness actions...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline. This will result in life-threatening
conditions. Stay off jetties and piers since they can be quickly
inundated by the heavy surf. Or...better yet...just stay away.

A High Surf Advisory means that high surf will affect beaches in
the advisory area, producing rip currents and localized beach
erosion.

&&

$$


Small Craft Advisory


URGENT - Marine Weather Message
National Weather Service San Francisco CA
912 PM PST Thu Jan 18 2018

...A large long period westerly swell will create hazardous seas
through Friday....

PZZ540-191315-
/O.CON.KMTR.SC.Y.0010.000000T0000Z-180120T1100Z/
Point Arena To Point Reyes To 10 nm-
912 PM PST Thu Jan 18 2018

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
SATURDAY...

* WINDS...Northwest 10 to 20 kt.

* SEAS...15 to 20 feet at 15 to 17 seconds.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or steep waves are expected to produce hazardous wave
conditions to small craft. Inexperienced mariners...especially
those operating smaller vessels should avoid navigating in these
conditions.

&&

$$

URGENT - Marine Weather Message
National Weather Service San Francisco CA
912 PM PST Thu Jan 18 2018

...A large long period westerly swell will create hazardous seas
through Friday....

PZZ570-191315-
/O.CON.KMTR.SC.Y.0010.000000T0000Z-180120T1100Z/
Point Arena To Point Reyes 10 To 60 nm Offshore-
912 PM PST Thu Jan 18 2018

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
SATURDAY...

* WINDS...Northwest 10 to 20 kt.

* SEAS...16 to 21 feet at 15 to 17 seconds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or steep waves are expected to produce hazardous wave
conditions to small craft. Inexperienced mariners...especially
those operating smaller vessels should avoid navigating in these
conditions.

&&

$$


Hazardous Seas Warning


Urgent - Marine Weather Message
National Weather Service Eureka CA
857 PM PST Thu Jan 18 2018

PZZ450-455-470-475-191300-
/O.CON.KEKA.SE.W.0002.000000T0000Z-180120T1800Z/
Pt St George to Cape Mendocino out 10 nm-
Cape Mendocino to Pt Arena out 10 nm-
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
857 PM PST Thu Jan 18 2018

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WAVES...18 to 22 feet at 18 seconds through early Friday
  morning. Seas will very gradually decrease over the weekend, but
  will remain above 15 feet through at least Saturday. Seas are
  expected to increase again Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Hazardous Seas Warning means hazardous sea conditions are
imminent or occurring. Recreational boaters should remain in
port, or take shelter until waves subside.  Commercial vessels
should prepare for rough seas and consider remaining in port or
taking shelter in port until hazardous seas subside.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
230 PM PST Thu Jan 18 2018

PZZ350-356-370-376-191130-
/O.CON.KMFR.SE.W.0005.000000T0000Z-180120T1200Z/
/O.NEW.KMFR.GL.A.0003.180121T0600Z-180122T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
230 PM PST Thu Jan 18 2018

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 4 AM PST
   SATURDAY...
...GALE WATCH IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY
   AFTERNOON...

The National Weather Service in Medford has issued a Gale Watch...
which is in effect from Saturday evening through Sunday
afternoon.

* Winds...Southwest winds 15 to 25 kt will diminish to 10 to 20 kt
  Friday. Winds will become south and increase to 30 to 40 kt late
  Saturday night into Sunday.

* Seas...West swell 26 to 28 feet will subside to 19 to 20 feet
  Friday morning, to 17 to 18 feet Friday night, then to 11 to 13
  feet Saturday evening. Seas will then build again ahead of an
  incoming cold front.

* Areas affected...Dangerous seas will impact all areas through
  Friday night. Gale force winds will affect nearly all areas
  Sunday.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/hazard

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Hazardous Seas Warning means very steep and hazardous sea
conditions are imminent or occurring. Recreational boaters should
remain in port, or take shelter until waves subside.  Commercial
vessels should prepare for rough seas and consider remaining in
port or taking shelter in port until hazardous seas subside.

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

http://www.weather.gov/medford


Gale Watch


URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
230 PM PST Thu Jan 18 2018

PZZ350-356-370-376-191130-
/O.CON.KMFR.SE.W.0005.000000T0000Z-180120T1200Z/
/O.NEW.KMFR.GL.A.0003.180121T0600Z-180122T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
230 PM PST Thu Jan 18 2018

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 4 AM PST
   SATURDAY...
...GALE WATCH IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY
   AFTERNOON...

The National Weather Service in Medford has issued a Gale Watch...
which is in effect from Saturday evening through Sunday
afternoon.

* Winds...Southwest winds 15 to 25 kt will diminish to 10 to 20 kt
  Friday. Winds will become south and increase to 30 to 40 kt late
  Saturday night into Sunday.

* Seas...West swell 26 to 28 feet will subside to 19 to 20 feet
  Friday morning, to 17 to 18 feet Friday night, then to 11 to 13
  feet Saturday evening. Seas will then build again ahead of an
  incoming cold front.

* Areas affected...Dangerous seas will impact all areas through
  Friday night. Gale force winds will affect nearly all areas
  Sunday.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/hazard

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Hazardous Seas Warning means very steep and hazardous sea
conditions are imminent or occurring. Recreational boaters should
remain in port, or take shelter until waves subside.  Commercial
vessels should prepare for rough seas and consider remaining in
port or taking shelter in port until hazardous seas subside.

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

http://www.weather.gov/medford


Marine Weather Statement


Marine Weather Statement
National Weather Service Eureka CA
151 PM PST Thu Jan 18 2018

PZZ450-191100-
Pt St George to Cape Mendocino out 10 nm-
151 PM PST Thu Jan 18 2018

Due to hazardous wave conditions, the United States Coast Guard
has closed the entrances to Humboldt Bay as well as the Crescent
City Harbor. Buoys near shore have been reporting significant wave
heights of 21-25 feet around 17 seconds this afternoon. Both
entrances will remain closed until conditions improve.

$$

Marine Weather Statement
National Weather Service Eureka CA
151 PM PST Thu Jan 18 2018

PZZ455-191100-
Cape Mendocino to Pt Arena out 10 nm-
151 PM PST Thu Jan 18 2018

Due to hazardous wave conditions, the United States Coast Guard
has closed the Noyo harbor. Buoys near shore have been reporting significant
wave heights of 18-22 feet around 16 seconds this afternoon.The
harbor entrance will remain closed until conditions improve.

$$


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Eureka CA
254 PM PST Thu Jan 18 2018

CAZ101-103-104-109-192300-
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
254 PM PST Thu Jan 18 2018

...HIGH SURF WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING...

This hazardous weather outlook is for northwest California.

.DAY ONE...This afternoon and tonight.

A High Surf Warning is currently in effect.

Isolated thunderstorms are possible tonight, some of which could
produce accumulating hail on area roadways.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Isolated thunderstorms are possible during Friday, some of which
could producing accumulating hail on area roadways.

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

$$

Hazardous Weather Outlook
National Weather Service Eureka CA
254 PM PST Thu Jan 18 2018

CAZ110>113-192300-
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Southwestern Mendocino Interior-Southeastern Mendocino Interior-
254 PM PST Thu Jan 18 2018

This hazardous weather outlook is for northwest California.

.DAY ONE...This afternoon and tonight.

Snow levels will fall to 3000 feet tonight, resulting in light snow
accumulations across the high terrain of interior Mendocino county.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected.

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

$$

Hazardous Weather Outlook
National Weather Service Eureka CA
254 PM PST Thu Jan 18 2018

CAZ105>108-192300-
Northern Humboldt Interior-Southern Humboldt Interior-
Northern Trinity-Southern Trinity-
254 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 PM
PST FRIDAY...

This hazardous weather outlook is for northwest California.

.DAY ONE...This afternoon and tonight.

A Winter Weather Advisory is in effect tonight for snow
accumulations from 2 to 5 inches for elevations above 3000 feet.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

A Winter Weather Advisory is in effect through Friday evening for
snow accumulations from 2 to 5 inches for elevations above 3000 feet.

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

$$

Hazardous Weather Outlook
National Weather Service Eureka CA
254 PM PST Thu Jan 18 2018

CAZ102-192300-
Del Norte Interior-
254 PM PST Thu Jan 18 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM PST FRIDAY...

This hazardous weather outlook is for northwest California.

.DAY ONE...This afternoon and tonight.

A Winter Weather Advisory is in effect this afternoon and tonight
for snow accumulations from 4 to 7 inches for elevations above 3000
feet.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

A Winter Weather Advisory is in effect through Friday evening for
snow accumulations from 4 to 7 inches for elevations above 3000 feet.

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

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE