Winter Storm Warning 9, NWS Medford, OR

819 
WWUS46 KMFR 201035
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
235 AM PST Mon Feb 20 2017

...Winter weather will impact the mountains of southern Oregon 
and northern California tonight through Tuesday morning...

ORZ030-031-202300-
/O.EXB.KMFR.WS.W.0009.170221T0600Z-170222T0600Z/
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
235 AM PST Mon Feb 20 2017

...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST TUESDAY above 5000 feet...

The National Weather Service in Medford has issued a Winter Storm
Warning for Snow and Blowing Snow...which is in effect from 10 PM
this evening to 10 PM PST Tuesday. 

* Snow accumulations...4 to 8 inches.

* Winds...South 40 to 50 mph with gusts to 70 mph.

* Elevation...Snow levels will lower from 5500 feet this evening
  to 4500 feet Tuesday morning.

* Locations include...Yamsay Mountain, Winter Rim, Warner 
  Mountain Pass on Highway 140.

* Impacts...Possible whiteout conditions with hazardous winds.

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ082-083-202300-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
South Central Siskiyou County-
North Central and Southeast Siskiyou County-
235 AM PST Mon Feb 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 5000 FEET...

* Snow accumulations...1 to 2 feet. Higher amounts above 6000 
  feet. 

* Winds...South 20 to 30 mph with higher gusts, especially above 
  6000 feet. 

* Elevation...Snow levels will vary between 5000 and 6000 feet 
  through Tuesday morning. 

* Locations include: Mount Shasta Ski Park, Everitt Memorial 
  Highway. 

* Impacts...Roadways above 5000 feet will become snow covered at 
  times and may become impassable, especially above 5500 feet. 
  Wind and snow may cause whiteout conditions. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ080-202300-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
Western Siskiyou County-
235 AM PST Mon Feb 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 5000 FEET...

* Snow accumulations...1 to 2 feet.

* Winds...South 20 to 30 mph with higher gusts.

* Elevation...Snow levels will vary between 5000 and 6000 feet.

* Locations include...Etna Summit on Sawyers Bar Road and other 
  high terrain roadways. 

* Impacts...Roadways above 5000 feet will become snow covered at 
  times and may become impassable, especially above 5500 feet. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ027-028-202300-
/O.NEW.KMFR.WW.Y.0018.170221T0600Z-170222T0600Z/
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-
Including the cities of Crater Lake and Diamond Lake
235 AM PST Mon Feb 20 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST TUESDAY ABOVE 4000 FEET...

The National Weather Service in Medford has issued a Winter
Weather Advisory for Snow...which is in effect from 10 PM this 
evening to 10 PM PST Tuesday. 

* Snow accumulations...4 to 8 inches and up to a foot around
  Crater lake and Mount Ashland.

* Winds...Southwest winds increasing to 30 to 40 mph with gusts to
  60 mph.

* Elevation...Snow levels will fall from 5000 feet this evening to
  near 4000 feet Tuesday morning.

* Locations include...Highway 62 near Crater Lake, highway 230,
  highway 58 at Willamette Pass, highway 138 at Diamond Lake
  Summit, Siskiyou Summit, and Mount Ashland ski road.

* Impacts...Roads will become snow packed and slippery. I-5 at
  Siskiyou Summit should be the least impacted with only 1-3
  inches there.

* View the hazard area in detail at 
  http://weather.gov/medford/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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

Stavish

108 
WWUS46 KMFR 202251
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
251 PM PST Mon Feb 20 2017

...Winter weather will impact the mountains of southern Oregon
and northern California tonight through Tuesday morning...

ORZ030-211215-
/O.EXB.KMFR.WW.Y.0018.170221T0600Z-170222T0000Z/
/O.CON.KMFR.WS.W.0009.170221T0600Z-170222T0600Z/
Northern and Eastern Klamath County and Western Lake County-
Including the city of Chemult
251 PM PST Mon Feb 20 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
4 PM PST TUESDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 10 PM PST TUESDAY...

* Advisory snow accumulations...3 to 6 inches. 

* Warning snow accumulations...6 to 12 inches.

* Winds...Southwest winds increasing to 15 to 25 mph with
  occasional gusts to 35 mph Tuesday morning.

* Advisory Locations include...Highway 97 near Chemult. 

* Warning Locations include...Yamsay Mountain.

* Impacts...Roads will become snow packed and slippery. Blowing
  snow will reduce visibility. 

* View the hazard area in detail at http://weather.gov/medford/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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

ORZ031-211215-
/O.CON.KMFR.WS.W.0009.170221T0600Z-170222T0600Z/
Central and Eastern Lake County-
251 PM PST Mon Feb 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 10 PM PST TUESDAY...

* Snow accumulations...4 to 8 inches.

* Winds...South 40 to 50 mph with gusts to 70 mph.

* Elevation...Snow levels will lower from 5500 feet this evening 
  to 4500 feet Tuesday morning. 

* Locations include...Winter Rim, Warner Mountain Pass on Highway
  140.

* Impacts...Snow covered roads are expected. Possible whiteout
  conditions with hazardous winds.

* View the hazard area in detail at http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ082-083-211215-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
South Central Siskiyou County-
North Central and Southeast Siskiyou County-
251 PM PST Mon Feb 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 5000 FEET...

* Snow accumulations...6 to 12 additional inches. Higher amounts
  above 6000 feet. Several inches possible between 4000 and 5000
  feet.

* Winds...Increasing tonight to south 20 to 30 mph with higher 
  gusts, especially above 6000 feet. 

* Elevation...Snow levels will lower to 4000 feet by Tuesday
  morning.

* Locations include: Mount Shasta Ski Park, Everitt Memorial 
  Highway. 

* Impacts...Roadways above 5000 feet will become snow covered at 
  times and may become impassable, especially above 5500 feet. 
  Wind and snow may cause whiteout conditions. 

* View the hazard area in detail at http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ080-211215-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
Western Siskiyou County-
251 PM PST Mon Feb 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 5000 FEET...

* Snow accumulations...6 to 12 additional inches.

* Winds...South 20 to 30 mph with higher gusts.

* Elevation...Snow levels will lower to 4000 feet by Tuesday
  morning. 

* Locations include...Etna Summit on Sawyers Bar Road and other 
  high terrain roadways. 

* Impacts...Roadways above 5000 feet will become snow covered at 
  times and may become impassable, especially above 5500 feet. 

* View the hazard area in detail at http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ027-028-211215-
/O.CON.KMFR.WW.Y.0018.170221T0600Z-170222T0600Z/
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-
Including the cities of Crater Lake and Diamond Lake
251 PM PST Mon Feb 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 PM PST TUESDAY ABOVE 4000 FEET...

* Snow accumulations...6 to 12 inches and over a foot around 
  Crater lake and Mount Ashland. 

* Winds...Southwest increasing tonight to 30 to 40 mph with gusts
  to 60 mph. 

* Elevation...Snow levels will fall from 5000 feet this evening 
  to near 4000 feet Tuesday morning. 

* Locations include...Highway 62 near Crater Lake, highway 230, 
  highway 58 at Willamette Pass, highway 138 at Diamond Lake 
  Summit, Siskiyou Summit, and Mount Ashland ski road. 

* Impacts...Roads will become snow packed and slippery. I-5 at
  Siskiyou Summit should be the least impacted with 1-3 inches
  there.

* View the hazard area in detail at http://weather.gov/medford/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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

455 
WWUS46 KMFR 211222
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
422 AM PST Tue Feb 21 2017

...Winter weather will continue to impact the mountains of 
southern Oregon and northern California today...

ORZ030-220000-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170222T0600Z/
/O.CON.KMFR.WW.Y.0018.000000T0000Z-170222T0000Z/
Northern and Eastern Klamath County and Western Lake County-
Including the city of Chemult
422 AM PST Tue Feb 21 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* Additional snow accumulations...2 to 4 inches or less.

* Snow levels...Snow levels near 5500 feet will fall to 4500 feet
  this morning and then to the 3500 to 4000 foot range this
  afternoon and evening. 

* Winds...Southwest winds increasing to 15 to 25 mph with
  occasional gusts to 35 mph. 

* Advisory Locations include...Highway 97 near Chemult.

* Warning Locations include...Yamsay Mountain.

* Impacts...Roads will become snow packed and slippery. Blowing 
  snow will reduce visibility. 

* View the hazard area in detail at 
  http://weather.gov/medford/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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

ORZ031-220000-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170222T0600Z/
Central and Eastern Lake County-
422 AM PST Tue Feb 21 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* Additional snow accumulation...2 inches or less.

* Winds...South 40 to 50 mph with gusts to 70 mph.

* Elevation...Snow levels will lower from 5500 feet to 4500 feet
  this morning. 

* Locations include...Winter Rim, Warner Mountain Pass on 
  Highway 140. 

* Impacts...Snow covered roads are expected. Possible whiteout 
  conditions with hazardous winds are expected above 5500 feet. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ082-083-211800-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
South Central Siskiyou County-
North Central and Southeast Siskiyou County-
422 AM PST Tue Feb 21 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 5000 FEET...

* Additional snow accumulations...2 to 6 inches. 

* Winds...Southwest 20 to 30 mph with higher gusts, especially 
  above 6000 feet. 

* Elevation...Snow levels will lower to 4500 feet this morning.

* Locations include: Mount Shasta Ski Park, Everitt Memorial 
  Highway. 

* Impacts...Roadways above 5000 feet will become snow covered at 
  times and may become impassable, especially above 5500 feet. 
  Wind and snow may cause brief whiteout conditions. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ080-211800-
/O.CON.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
Western Siskiyou County-
422 AM PST Tue Feb 21 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 5000 FEET...

* Additional snow accumulations...4 to 8 inches. Up to an
  additional foot of snow is expected in the above 5000 feet west
  of the Marble Mountain crest.

* Winds...South 20 to 30 mph with higher gusts.

* Elevation...Snow levels near 4500 feet will lower to 4000 feet
  this morning.

* Locations include...Etna Summit on Sawyers Bar Road and other 
  high terrain roadways. 

* Impacts...Roadways above 5000 feet will become snow covered at 
  times and may become impassable, especially above 5500 feet. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ027-028-220000-
/O.CON.KMFR.WW.Y.0018.000000T0000Z-170222T0600Z/
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-
Including the cities of Crater Lake and Diamond Lake
422 AM PST Tue Feb 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING ABOVE 4500 FEET...

* Additional snow accumulations... 3 to 6 inches, and locally up
  to 8 inches, in the Siskiyous and the Cascades south of Highway
  140. 5 to 10 inches north of highway 140. 

* Winds...Southwest 10 to 20 mph with gusts to 30 mph below 5500
  feet. Southwest 20 to 30 mph with gusts to 50 mph above 5500
  feet.

* Elevation...Snow levels will fall from near 4500 feet this
  morning to 3700 feet this morning, and then to near 3100 feet
  this evening.

* Locations include...Highway 62 near Crater Lake, highway 230,
  highway 58 at Willamette Pass, highway 138 at Diamond Lake
  Summit, and Mount Ashland ski road. 

* Impacts...Roads will become snow packed and slippery. I-5 at
  Siskiyou Summit is not in the advisory, as accumulations there
  are only expected to be an inch or less. 

* View the hazard area in detail at 
  http://weather.gov/medford/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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

BTL

565 
WWUS46 KMFR 211724
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
924 AM PST Tue Feb 21 2017

ORZ030-220000-
/O.CAN.KMFR.WS.W.0009.000000T0000Z-170222T0600Z/
/O.CON.KMFR.WW.Y.0018.000000T0000Z-170222T0000Z/
Northern and Eastern Klamath County and Western Lake County-
Including the city of Chemult
924 AM PST Tue Feb 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* Additional snow accumulations...1 to 3 inches.

* Timing...Snow showers will continue through the afternoon. While
  total accumulations will be light, showers may be briefly heavy
  and bring quick accumulations. Snow may melt off between
  showers.

* Locations include...Highway 97 near Chemult.

* Impacts...Snow showers will create occasional slippery roadways
  and limited visibility. 

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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

ORZ031-211830-
/O.CAN.KMFR.WS.W.0009.000000T0000Z-170222T0600Z/
Central and Eastern Lake County-
924 AM PST Tue Feb 21 2017

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Medford has cancelled the Winter
Storm Warning. 

Snow showers will continue this afternoon, but accumulations are
expected to be minor. Travelers be alert for sudden changes in 
driving conditions.

$$

CAZ080-082-083-211830-
/O.CAN.KMFR.WS.W.0009.000000T0000Z-170221T1800Z/
Western Siskiyou County-South Central Siskiyou County-
North Central and Southeast Siskiyou County-
924 AM PST Tue Feb 21 2017

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Medford has cancelled the Winter
Storm Warning. 

Snow showers will continue this afternoon, but accumulations are
expected to be minor. Travelers be alert for sudden changes in 
driving conditions.

$$

ORZ027-028-220000-
/O.CON.KMFR.WW.Y.0018.000000T0000Z-170222T0600Z/
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-
Including the cities of Crater Lake and Diamond Lake
924 AM PST Tue Feb 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING ABOVE 4000 FEET...

* Additional snow accumulations... 3 to 6 inches, and locally up 
  to 8 inches, in the Siskiyous and the Cascades south of 
  Highway 140. 5 to 10 inches north of highway 140. 

* Winds...Southwest 10 to 20 mph with gusts to 30 mph below 5500 
  feet. Southwest 20 to 30 mph with gusts to 50 mph above 5500 
  feet. This will create areas of blowing snow.

* Elevation...4000 feet this morning, falling to 3000 feet this
  evening.

* Timing...Snow showers will continue through the afternoon.
  Showers may be briefly heavy and bring quick accumulations. Snow
  may melt off between showers.

* Locations include...Highway 62 near Crater Lake, highway 230, 
  highway 58 at Willamette Pass, highway 138 at Diamond Lake 
  Summit, and Mount Ashland ski road. 

* Impacts...Roads will occasionally be snow packed and slippery.
  I-5 at Siskiyou Summit is not in the advisory, as accumulations
  there are only expected to be an inch or less with roadways
  generally wet.

* View the hazard area in detail at 
  http://weather.gov/medford/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 weather.gov/Medford/Cams for latest road conditions.

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

&&

$$

Wright

Area Forecast Discussion
National Weather Service Medford OR
803 AM PST Sun Feb 19 2017

.DISCUSSION...Rain and snow are affecting the forecast area this
morning as another front moves through from west to east. Snow
levels, per observations, are about 3000 feet this morning so the
forecast looks on track. Winter Weather Advisories continue for
the mountains of Siskiyou County as well as the Siskiyous and
Cascades in Oregon, generally about 3000 feet. Precipitation
will diminish this afternoon and road temperatures will warm, so
may be able to end these Advisories early than the 1pm scheduled
ending time.

A very active weather pattern continues through Tuesday at least.
We'll be examining the expected impacts of the northern edges of
an Atmospheric River impacting the area, bringing moderate to
heavy precipitation, and two surface lows approaching the coast
that will bring windy conditions to much of the forecast area.
Exactly how windy is a question we'll be attempting to answer
today. Please see the previous discussion below for details on the
active weather pattern and the cooling trend/lowering snow levels
after Tuesday.

&&

.AVIATION...19/12Z TAF CYCLE...Areas of MVFR/IFR cigs with higher
terrain obscured will persist through this morning with widespread
showers, breezy south winds, and freezing levels of around 3000 to
4000 feet above sea level. Late this morning and into the
afternoon, expect conditions to improve somewhat mostly VFR with
areas of MVFR, and showers gradually decreasing in coverage and
intensity. -BPN/Sven

&&

.MARINE...Updated 400 AM PST Sunday 19 February 2017...South winds
will slowly decrease through the day and into tonight. High long
period swell will build over the waters late today. Two storms could
impact the waters Sunday night through Monday night with the
potential for gales and very steep seas before conditions improve
toward midweek. Sven

&&

.PREV DISCUSSION... /Issued 350 AM PST Sun Feb 19 2017/

DISCUSSION...Deep low pressure over the northeast Pacific will
continue to usher in wet and windy weather at times to the region
through Tuesday. Thereafter through late week the weather will
turn colder as the trough migrates across the Pacific Northwest
and a cold northerly flow sets up.

The trough passing through this morning is accompanied by
unstable conditions over the coastal waters north of Cape Blanco
where several lightning strikes are being observed in cell
clusters moving onshore around Florence. Conditions will remain
similar there through the day with the instability moving off to
the north by evening. Meanwhile, moist onshore flow and ample
dynamics will provide widespread moderate shower activity inland
across the west side and Cascades. A winter weather advisory
continues through the morning with snow levels between 3000-3500
feet. 2 to 5 inches of additional accumulation looks likely today
across the Cascades and Siskiyous but precipitation rates will
taper off by afternoon as snow level rise in flow transitioning to
southerly.

The GFS and ECMWF are somewhat similar in advertising a deep
surface low to move from south to north through the coastal waters
late tonight through Monday morning. A gale warning has been
issued for this event. In addition, high wind watches have been
issued for the Shasta Valley and Summer Lake areas as southwest
flow between 700-500 millibars increases to 60 to 85 kts.
Increasing precipitation rates will occur with heavy rain mainly
on tap for the coast through Josephine county and Siskiyou
county.

Yet another short wave will roll through Monday night into early
Tuesday with a period of heavy rain and mountain snows. Will need
to watch the surface low forecast as the GFS is indicating another
fairly strong surface low to move up the coastal waters with a
potential high wind event. Not seeing a lot of agreement in the
operational solutions or ensembles so confidence is marginal at
this time. Despite the wind uncertainties, confidence on
precipitation amounts is pretty good.

The Scott River at Fort Jones and the Klamath River at Seiad
Valley are forecast to get close to flood stage by Tuesday morning.
A hydrologic Outlook is in effect for these areas and flood
watches may be required later this morning or this afternoon after
coordination with the River Forecast Center in Sacramento. Storm
total precipitation amounts from Curry through southern Josephine
and Siskiyou Counties will range from 2 to 6 inches from this
morning through Tuesday.

The pattern transitions to a cool and showery regime later in the
week with snow levels dipping to valley floors across the west
side Thursday through the weekend. Some low elevation snow
accumulations look possible, but details are fairly uncertain at
this time. Have knocked down some of the temperature forecasts in
this time frame several degrees.

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Wind Advisory until 10 PM PST Monday for ORZ030-031.
     High Wind Watch from this evening through Monday morning for
     ORZ030-031.
     Winter Weather Advisory until 1 PM PST this afternoon ABOVE 3000
     FEET for for ORZ025>028.

CA...Winter Weather Advisory until 1 PM PST this afternoon for
     CAZ082-083.
     Winter Weather Advisory until 1 PM PST this afternoon for
     CAZ080.
     Wind Advisory until 4 PM PST Monday for CAZ081.
     High Wind Watch from this evening through Monday morning for
     CAZ081.

Pacific Coastal Waters...Small Craft Advisory until 7 AM PST Monday for
     PZZ350-356-370-376.
     Gale Warning from 7 AM to 4 PM PST Monday for
     PZZ350-356-370-376.
     Hazardous Seas Warning from 7 AM to 4 PM PST Monday for
     PZZ350-356-370-376.

NSK/MTS/SBN