Small Craft Advisory 134, NWS Medford, OR

246 
WHUS76 KMFR 231027
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
227 AM PST Thu Dec 23 2021

PZZ376-232330-
/O.CAN.KMFR.SC.Y.0133.000000T0000Z-211224T1800Z/
/O.EXT.KMFR.SC.Y.0134.211223T1027Z-211226T0000Z/
/O.UPG.KMFR.SE.A.0034.211224T1800Z-211225T0600Z/
/O.NEW.KMFR.SE.W.0084.211224T1200Z-211225T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
227 AM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM PST SATURDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 AM TO 4 PM PST
FRIDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 25 to 30 kt with gusts up to 35 kt and combined 
  seas becoming very steep at 15 to 17 feet Friday morning and 
  afternoon. Steep northwest seas of 12 to 14 feet at 13 seconds 
  then continue into the weekend. 
 
* WHERE...Small Craft conditions are expected for all areas, with
  very steep and hazardous seas expected beyond 20 nm from shore
  Friday. 

* WHEN...The Small Craft Advisory remains in effect until 4 PM 
  PST Saturday, with a Hazardous Seas Warning in effect from 4 AM 
  to 4 PM PST Friday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ370-232330-
/O.EXT.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.UPG.KMFR.SE.A.0034.211224T1800Z-211225T0600Z/
/O.NEW.KMFR.SE.W.0084.211224T1200Z-211225T0000Z/
/O.EXT.KMFR.SC.Y.0134.211225T0000Z-211226T0000Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
227 AM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 AM TO 4 PM PST
FRIDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM FRIDAY TO 4 PM
PST SATURDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 25 to 30 kt with gusts up to 35 kt and combined 
  seas becoming very steep at 15 to 18 feet Friday morning and 
  afternoon. Steep northwest seas of 12 to 14 feet at 13 seconds 
  then continue into the weekend. 

* WHERE...All areas.

* WHEN...A Small Craft Advisory is in effect until 4 AM PST 
  Friday, followed by a Hazardous Seas Warning from 4 AM to 4 PM 
  PST Friday. A second Small Craft Advisory is then in effect from
  4 PM Friday to 4 PM PST Saturday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-232330-
/O.EXT.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.NEW.KMFR.SE.W.0084.211224T1200Z-211225T0000Z/
/O.NEW.KMFR.SC.Y.0135.211225T0000Z-211226T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
227 AM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 AM TO 4 PM PST
FRIDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM FRIDAY TO 4 PM PST
SATURDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 25 to 30 kt with gusts up to 35 kt and combined 
  seas becoming very steep at 13 to 16 feet Friday morning and 
  afternoon. Steep northwest seas of 10 to 13 feet at 13 seconds 
  then continue into the weekend. 

* WHERE...All areas.

* WHEN...A Small Craft Advisory is in effect until 4 AM PST 
  Friday, followed by a Hazardous Seas Warning from 4 AM to 4 PM 
  PST Friday. A second Small Craft Advisory is then in effect from
  4 PM Friday to 4 PM PST Saturday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ356-232330-
/O.CON.KMFR.SC.Y.0133.000000T0000Z-211226T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
227 AM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds
  becoming west 20 to 25 kt with gusts up to 30 kt and combined
  seas becoming 9 to 12 feet Friday morning and afternoon. Steep 
  northwest seas of 10 to 13 feet at 13 seconds then continue into
  the weekend. 

* WHERE...All areas.

* WHEN...Until 4 PM PST Saturday.

* IMPACTS...Gusty winds and steep seas could capsize or damage
  smaller vessels, and will pose an increased risk to
  inexperienced mariners. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.

&&

$$

Visit us at https://www.weather.gov/Medford

781 
WHUS76 KMFR 232145
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
145 PM PST Thu Dec 23 2021

PZZ370-241045-
/O.CON.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.CON.KMFR.SE.W.0084.211224T1200Z-211225T0000Z/
/O.EXT.KMFR.SC.Y.0134.211225T0000Z-211226T1200Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
145 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 AM TO 4 PM PST
FRIDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM FRIDAY TO 4 AM
PST SUNDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 25 to 30 kt with gusts up to 35 kt and combined 
  seas becoming very steep at 15 to 18 feet Friday morning and 
  afternoon. Steep northwest seas of 12 to 14 feet at 13 seconds 
  then continue into the weekend.

* WHERE...All areas.

* WHEN...For the Hazardous Seas Warning, from 4 AM to 4 PM PST
  Friday. For the Small Craft Advisory, now until 4 AM PST Friday.
  Then from 4 PM Friday to 4 AM PST Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-241045-
/O.CON.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.CON.KMFR.SE.W.0084.211224T1200Z-211225T0000Z/
/O.EXT.KMFR.SC.Y.0135.211225T0000Z-211226T1200Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
145 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 AM TO 4 PM PST
FRIDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM FRIDAY TO 4 AM
PST SUNDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 25 to 30 kt with gusts up to 35 kt and combined 
  seas becoming very steep at 13 to 16 feet Friday morning and 
  afternoon. Steep northwest seas of 10 to 13 feet at 13 seconds 
  then continue into the weekend.

* WHERE...All areas.

* WHEN...For the Hazardous Seas Warning, from 4 AM to 4 PM PST
  Friday. For the Small Craft Advisory, until 4 AM PST Friday.
  Then from 4 PM Friday to 4 AM PST Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ376-241045-
/O.EXT.KMFR.SC.Y.0134.000000T0000Z-211226T1200Z/
/O.CON.KMFR.SE.W.0084.211224T1200Z-211225T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
145 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST SUNDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 AM TO 4 PM PST
FRIDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 25 to 30 kt with gusts up to 35 kt and combined 
  seas becoming very steep at 15 to 17 feet Friday morning and 
  afternoon. Steep northwest seas of 12 to 14 feet at 13 seconds 
  then continue into the weekend.

* WHERE...Small Craft conditions are expected for all areas, 
  with very steep and hazardous seas expected beyond 20 nm from 
  shore Friday.

* WHEN...For the Hazardous Seas Warning, from 4 AM to 4 PM PST 
  Friday. For the Small Craft Advisory, until 4 AM PST Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ356-241045-
/O.EXT.KMFR.SC.Y.0133.000000T0000Z-211226T1200Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
145 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST SUNDAY...

* WHAT...Steep northwest seas around 10 feet at 8 seconds. Winds 
  becoming west 20 to 25 kt with gusts up to 30 kt and combined 
  seas becoming 9 to 12 feet Friday morning and afternoon. Steep 
  northwest seas of 10 to 13 feet at 13 seconds then continue 
  into the weekend.

* WHERE...All areas.

* WHEN...Until 4 AM PST Sunday.

* IMPACTS...Gusty winds and/or steep seas could capsize or 
  damage smaller vessels.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.

&&

$$

Visit us at https://www.weather.gov/Medford

576 
WHUS76 KMFR 240514
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
914 PM PST Thu Dec 23 2021

PZZ370-241815-
/O.CON.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.EXT.KMFR.SE.W.0084.211224T1200Z-211225T0900Z/
/O.EXT.KMFR.SC.Y.0134.211225T0900Z-211227T1200Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
914 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING NOW IN EFFECT FROM 4 AM FRIDAY TO 1 AM
PST SATURDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 1 AM SATURDAY TO 4 AM
PST MONDAY...

* WHAT...For the first Small Craft Advisory, west winds 20 to 25
  kt with gusts up to 30 kt and seas 10 to 12 ft at 12 seconds.
  For the Hazardous Seas Warning, west winds 25 to 30 kt with
  gusts to 35 kt and very steep and hazardous seas 12 to 17 ft at
  11 seconds expected. For the second Small Craft Advisory,
  northwest winds 15 to 25 kt with gusts up to 30 kt and seas 10
  to 15 ft at 13 seconds expected.

* WHERE...All of the area.

* WHEN...For the Hazardous Seas Warning, from 4 AM Friday to 1 AM
  PST Saturday. For the first Small Craft Advisory, until 4 AM PST
  Friday. For the second Small Craft Advisory, from 1 AM Saturday
  to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-241815-
/O.CON.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.EXT.KMFR.SE.W.0084.211224T1200Z-211225T0900Z/
/O.EXT.KMFR.SC.Y.0135.211225T0900Z-211227T1200Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
914 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING NOW IN EFFECT FROM 4 AM FRIDAY TO 1 AM
PST SATURDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 1 AM SATURDAY TO 4 AM
PST MONDAY...

* WHAT...For the first Small Craft Advisory, west winds 20 to 25
  kt with gusts up to 30 kt and seas 9 to 11 ft at 12 seconds. For
  the Hazardous Seas Warning, west winds 25 to 30 kt with gusts to
  35 kt and very steep and hazardous seas 11 to 16 ft at 11
  seconds expected. For the second Small Craft Advisory, northwest
  winds 15 to 20 kt with gusts up to 30 kt and seas 9 to 15 ft at
  13 seconds expected.

* WHERE...All of the area.

* WHEN...For the Hazardous Seas Warning, from 4 AM Friday to 1 AM
  PST Saturday. For the first Small Craft Advisory, until 4 AM PST
  Friday. For the second Small Craft Advisory, from 1 AM Saturday
  to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ376-241815-
/O.EXT.KMFR.SC.Y.0134.000000T0000Z-211227T1200Z/
/O.EXT.KMFR.SE.W.0084.211224T1200Z-211225T0900Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
914 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST MONDAY...
...HAZARDOUS SEAS WARNING NOW IN EFFECT FROM 4 AM FRIDAY TO 1 AM
PST SATURDAY...

* WHAT...For the Hazardous Seas Warning, west winds 20 to 30 kt
  with gusts up to 35 kt and very steep and hazardous seas 13 to
  18 ft at 11 seconds expected. For the Small Craft Advisory, west
  winds 15 to 25 kt with gusts up to 30 kt and seas 10 to 16 ft 
  at 13 seconds.

* WHERE...Small Craft conditions are expected for all of the area,
  except very steep and hazardous seas are expected beyond 20 nm 
  from shore Friday through Friday night.

* WHEN...For the Hazardous Seas Warning, from 4 AM Friday to 1 
  AM PST Saturday. For the Small Craft Advisory, until 4 AM PST 
  Monday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ356-241815-
/O.EXT.KMFR.SC.Y.0133.000000T0000Z-211227T1200Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
914 PM PST Thu Dec 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST MONDAY...

* WHAT...West winds 15 to 25 kt with gusts up to 30 kt and seas 10 
  to 16 ft at 13 seconds.

* WHERE...All of the area.

* WHEN...Until 4 AM PST Monday.

* IMPACTS...Gusty winds and/or steep seas could capsize or 
  damage smaller vessels.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.

&&

$$

Visit us at https://www.weather.gov/Medford

651 
WHUS76 KMFR 241005
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
205 AM PST Fri Dec 24 2021

PZZ370-242315-
/O.CAN.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.EXT.KMFR.SE.W.0084.211224T1005Z-211225T0900Z/
/O.CON.KMFR.SC.Y.0134.211225T0900Z-211227T1200Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
205 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 1 AM PST SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM SATURDAY TO
4 AM PST MONDAY...

* WHAT...West winds around 30 kt with gusts up to 35 kt and very
  steep wind-driven seas of 12 to 16 feet through this evening.
  Seas becoming northwest 13 to 17 feet at 12 seconds tonight
  through Sunday night.  

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST
  Saturday, followed by a Small Craft Advisory from 1 AM Saturday
  to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-242315-
/O.CAN.KMFR.SC.Y.0133.000000T0000Z-211224T1200Z/
/O.EXT.KMFR.SE.W.0084.211224T1005Z-211225T0900Z/
/O.CON.KMFR.SC.Y.0135.211225T0900Z-211227T1200Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
205 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 1 AM PST SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM SATURDAY TO
4 AM PST MONDAY...

* WHAT...West winds 25 to 30 kt with gusts up to 35 kt and very 
  steep wind-driven seas of 12 to 15 feet through this evening. 
  Seas becoming northwest 13 to 16 feet at 12 seconds tonight 
  through Sunday night. 

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST
  Saturday, followed by a Small Craft Advisory from 1 AM Saturday
  to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ376-242315-
/O.CAN.KMFR.SC.Y.0134.000000T0000Z-211227T1200Z/
/O.EXT.KMFR.SE.W.0084.211224T1005Z-211225T0900Z/
/O.NEW.KMFR.SC.Y.0136.211225T0900Z-211227T1200Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
205 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 1 AM PST SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM SATURDAY TO 4 AM PST
MONDAY...

* WHAT...West winds 25 to 30 kt with gusts up to 35 kt and very
  steep wind-driven seas of 12 to 16 feet through this evening. 
  Seas becoming northwest 13 to 17 feet at 12 seconds tonight 
  through Sunday night. 

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST
  Saturday, followed by a Small Craft Advisory from 1 AM Saturday
  to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ356-242315-
/O.UPG.KMFR.SC.Y.0133.000000T0000Z-211227T1200Z/
/O.EXB.KMFR.SE.W.0084.211224T1005Z-211225T0900Z/
/O.EXA.KMFR.SC.Y.0134.211225T0900Z-211227T1200Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
205 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 1 AM PST SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM SATURDAY TO 4 AM PST
MONDAY...

* WHAT...West winds 25 to 30 kt with gusts up to 35 kt and very
  steep wind-driven seas of 10 to 14 feet through this evening. 
  Seas becoming northwest 13 to 17 feet at 12 seconds tonight 
  through Sunday night. 

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST
  Saturday, followed by a Small Craft Advisory from 1 AM Saturday
  to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or damage
  vessels. 

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

Visit us at https://www.weather.gov/Medford

858 
WHUS76 KMFR 241953
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
1153 AM PST Fri Dec 24 2021

PZZ356-370-251500-
/O.CON.KMFR.SE.W.0084.000000T0000Z-211225T0900Z/
/O.CON.KMFR.SC.Y.0134.211225T0900Z-211227T1200Z/
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-
1153 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 1 AM PST
SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM SATURDAY TO
4 AM PST MONDAY...

* WHAT...West winds 25 to 30 kt with gusts up to 35 kt and very 
  steep wind-driven seas of 10 to 14 feet through this evening. 
  Seas becoming northwest 13 to 17 feet at 12 seconds tonight 
  through Sunday night.

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST 
  Saturday, followed by a Small Craft Advisory from 1 AM 
  Saturday to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-251500-
/O.CON.KMFR.SE.W.0084.000000T0000Z-211225T0900Z/
/O.CON.KMFR.SC.Y.0135.211225T0900Z-211227T1200Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
1153 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 1 AM PST
SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM SATURDAY TO
4 AM PST MONDAY...

* WHAT...West winds 25 to 30 kt with gusts up to 35 kt and very 
  steep wind-driven seas of 12 to 15 feet through this evening. 
  Seas becoming northwest 13 to 16 feet at 12 seconds tonight 
  through Sunday night.

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST 
  Saturday, followed by a Small Craft Advisory from 1 AM 
  Saturday to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ376-251500-
/O.CON.KMFR.SE.W.0084.000000T0000Z-211225T0900Z/
/O.CON.KMFR.SC.Y.0136.211225T0900Z-211227T1200Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
1153 AM PST Fri Dec 24 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 1 AM PST
SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM SATURDAY TO
4 AM PST MONDAY...

* WHAT...West winds 25 to 30 kt with gusts up to 35 kt and very 
  steep wind-driven seas of 12 to 16 feet through this evening. 
  Seas becoming northwest 13 to 17 feet at 12 seconds tonight 
  through Sunday night.

* WHERE...All areas.

* WHEN...The Hazardous Seas Warning is in effect until 1 AM PST 
  Saturday, followed by a Small Craft Advisory from 1 AM 
  Saturday to 4 AM PST Monday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

Visit us at https://www.weather.gov/Medford

138 
WHUS76 KMFR 251155
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
355 AM PST Sat Dec 25 2021

PZZ356-370-260100-
/O.EXT.KMFR.SC.Y.0134.000000T0000Z-211226T1000Z/
/O.NEW.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
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-
355 AM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM PST SUNDAY...
...HAZARDOUS SEAS WATCH IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM SUNDAY TO 4 PM PST
MONDAY...

* WHAT...For the first Small Craft Advisory, west winds 15 to 25
  kt with gusts up to 30 kt and seas 12 to 16 ft at 13 seconds.
  For the second Small Craft Advisory, northwest winds 15 to 25 kt
  with gusts up to 30 kt and seas 10 to 14 ft at 11 seconds 
  expected. For the Hazardous Seas Watch, very steep and hazardous
  seas 14 to 18 ft at 12 seconds possible.

* WHERE...All areas.

* WHEN...For the Small Craft Advisory, until 2 AM PST Sunday. 
  For the Small Craft Advisory, from 8 PM Sunday to 4 PM PST 
  Monday. For the Hazardous Seas Watch, from late tonight 
  through Sunday evening.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossing could become especially hazardous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider altering your plans to avoid possible hazardous and very
steep sea conditions.

&&

$$

PZZ350-260100-
/O.EXT.KMFR.SC.Y.0135.000000T0000Z-211226T1000Z/
/O.NEW.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
355 AM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM PST SUNDAY...
...HAZARDOUS SEAS WATCH IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM SUNDAY TO 4 PM PST
MONDAY...

* WHAT...For the first Small Craft Advisory, west winds 15 to 25
  kt with gusts up to 30 kt and seas 12 to 16 ft at 13 seconds.
  For the second Small Craft Advisory, northwest winds 15 to 25 kt
  with gusts up to 30 kt and seas 10 to 14 ft at 11 seconds 
  expected. For the Hazardous Seas Watch, very steep and hazardous
  seas 14 to 18 ft at 12 seconds possible.

* WHERE...All areas.

* WHEN...For the Small Craft Advisory, until 2 AM PST Sunday. 
  For the Small Craft Advisory, from 8 PM Sunday to 4 PM PST 
  Monday. For the Hazardous Seas Watch, from late tonight 
  through Sunday evening.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossing could become especially hazardous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider altering your plans to avoid possible hazardous and very
steep sea conditions.

&&

$$

PZZ376-260100-
/O.EXT.KMFR.SC.Y.0136.000000T0000Z-211226T1000Z/
/O.NEW.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
355 AM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM PST SUNDAY...
...HAZARDOUS SEAS WATCH IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM SUNDAY TO 4 PM PST
MONDAY...

* WHAT...For the first Small Craft Advisory, west winds 15 to 25
  kt with gusts up to 30 kt and seas 12 to 16 ft at 13 seconds.
  For the second Small Craft Advisory, northwest winds 15 to 25 kt
  with gusts up to 30 kt and seas 10 to 14 ft at 11 seconds 
  expected. For the Hazardous Seas Watch, very steep and hazardous
  seas 14 to 18 ft at 12 seconds possible.

* WHERE...All areas. 

* WHEN...For the Small Craft Advisory, until 2 AM PST Sunday. For
  the Small Craft Advisory, from 8 PM Sunday to 4 PM PST Monday. 
  For the Hazardous Seas Watch, from late tonight through Sunday 
  evening.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossing could become especially hazardous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider altering your plans to avoid possible hazardous and very
steep sea conditions.

&&

$$

Visit us at https://www.weather.gov/Medford

380 
WHUS76 KMFR 252235
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
235 PM PST Sat Dec 25 2021

PZZ356-261145-
/O.EXT.KMFR.SC.Y.0134.000000T0000Z-211226T0400Z/
/O.UPG.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.SE.W.0085.211226T0400Z-211227T0400Z/
/O.NEW.KMFR.GL.W.0046.211226T0400Z-211227T0400Z/
/O.CON.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
235 PM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM PST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM PST
SUNDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 8 PM THIS EVENING TO
8 PM PST SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM SUNDAY TO
4 PM PST MONDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with
  gusts up to 35 kt and seas 14 to 19 ft at 13 seconds expected.
  For the Hazardous Seas Warning, very steep and hazardous seas 12
  to 17 ft at 13 seconds expected. For the first Small Craft
  Advisory, seas 10 to 13 ft at 13 seconds. For the second Small 
  Craft Advisory, seas 9 to 12 ft at 11 seconds expected.

* WHERE...Small Craft Advisory conditions for all areas. Gale
  Warning from Port Orford northward. Hazardous Seas Warning 
  south of Port Orford.

* WHEN...For the Gale Warning and Hazardous Seas Warning, from 8
  PM this evening to 8 PM PST Sunday. For the first Small Craft
  Advisory, until 8 PM PST this evening. For the second Small 
  Craft Advisory, from 8 PM Sunday to 4 PM PST Monday.

* IMPACTS...Strong winds and very steep seas could capsize or 
  damage vessels. Low visibility conditions are expected.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid strong winds and very steep
seas. Remain in port, seek safe harbor, alter course, and/or
secure the vessel for severe conditions.

&&

$$

PZZ376-261145-
/O.EXT.KMFR.SC.Y.0136.000000T0000Z-211226T0400Z/
/O.UPG.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.SE.W.0085.211226T0400Z-211227T0400Z/
/O.NEW.KMFR.GL.W.0046.211226T0400Z-211227T0400Z/
/O.CON.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
235 PM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM PST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM PST
SUNDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 8 PM THIS EVENING TO
8 PM PST SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM SUNDAY TO
4 PM PST MONDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with
  gusts up to 40 kt and seas 15 to 20 ft at 13 seconds expected.
  For the Hazardous Seas Warning, very steep and hazardous seas 13
  to 18 ft at 13 seconds expected. For the first Small Craft
  Advisory, northwest winds 15 to 25 kt with gusts up to 30 kt and
  seas 11 to 14 ft at 13 seconds. For the second Small Craft
  Advisory, northwest winds 15 to 25 kt with gusts up to 30 kt and
  seas 10 to 13 ft at 11 seconds expected.

* WHERE...Small Craft Advisory conditions for all areas. Gale
  Warning from Port Orford northward. Hazardous Seas Warning 
  south of Port Orford.

* WHEN...For the Gale Warning, from 8 PM this evening to 8 PM PST
  Sunday. For the first Small Craft Advisory, until 8 PM PST this
  evening. For the second Small Craft Advisory, from 8 PM Sunday 
  to 4 PM PST Monday.

* IMPACTS...Strong winds and very steep seas could capsize or 
  damage vessels. Low visibility conditions are expected.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid strong winds and very steep
seas. Remain in port, seek safe harbor, alter course, and/or
secure the vessel for severe conditions.

&&

$$

PZZ370-261145-
/O.EXT.KMFR.SC.Y.0134.000000T0000Z-211226T0400Z/
/O.UPG.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.GL.W.0046.211226T0400Z-211227T0400Z/
/O.CON.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
235 PM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM PST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM PST
SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM SUNDAY TO
4 PM PST MONDAY...

* WHAT...For the Gale Warning, northwest winds 25 to 35 kt with
  gusts up to 40 kt and seas 15 to 21 ft at 13 seconds expected. 
  For the first Small Craft Advisory, northwest winds 20 to 25 kt 
  with gusts up to 30 kt and seas 13 to 15 ft at 13 seconds. For 
  the second Small Craft Advisory, northwest winds 15 to 25 kt 
  with gusts up to 30 kt and seas 11 to 14 ft at 11 seconds 
  expected.

* WHERE...All of the area.

* WHEN...For the Gale Warning, from 8 PM this evening to 8 PM PST
  Sunday. For the first Small Craft Advisory, until 8 PM PST this
  evening. For the second Small Craft Advisory, from 8 PM Sunday 
  to 4 PM PST Monday.

* IMPACTS...Strong winds and very steep seas could capsize or 
  damage vessels. Low visibility conditions are expected.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid strong winds and very steep
seas. Remain in port, seek safe harbor, alter course, and/or
secure the vessel for severe conditions.

&&

$$

PZZ350-261145-
/O.EXT.KMFR.SC.Y.0135.000000T0000Z-211226T0400Z/
/O.UPG.KMFR.SE.A.0035.211226T1000Z-211227T0400Z/
/O.NEW.KMFR.GL.W.0046.211226T0400Z-211227T0400Z/
/O.CON.KMFR.SC.Y.0137.211227T0400Z-211228T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
235 PM PST Sat Dec 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM PST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM PST
SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM SUNDAY TO
4 PM PST MONDAY...

* WHAT...For the Gale Warning, west winds 20 to 30 kt with gusts
  up to 35 kt and seas 13 to 19 ft at 13 seconds expected. For 
  the first Small Craft Advisory, west winds 15 to 20 kt with 
  gusts up to 25 kt and seas 11 to 13 ft at 13 seconds. For the 
  second Small Craft Advisory, seas 9 to 14 ft at 11 seconds 
  expected.

* WHERE...All of the area.

* WHEN...For the Gale Warning, from 8 PM this evening to 8 PM PST
  Sunday. For the first Small Craft Advisory, until 8 PM PST this
  evening. For the second Small Craft Advisory, from 8 PM Sunday 
  to 4 PM PST Monday.

* IMPACTS...Strong winds and very steep seas could capsize or 
  damage vessels. Low visibility conditions are expected.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid strong winds and very steep
seas. Remain in port, seek safe harbor, alter course, and/or
secure the vessel for severe conditions.

&&

$$

Visit us at https://www.weather.gov/Medford

Area Forecast Discussion
National Weather Service Medford OR
905 AM PST Wed Dec 22 2021

.DISCUSSION...Scattered showers are moving into the region ahead
of the front that is expected to bring moderate to heavy snow,
generally above 4000 ft elevation starting this afternoon.
Currently valley temperatures are a little above freezing, but
above the inversion quite a bit warmer, and this morning's
sounding supports the current snow level forecast. -Sven

&&

.MARINE...Updated 800 AM PST Wednesday, 22 December, 2021...Steep
seas will continue in the near shore waters through this morning,
with very steep and hazardous seas across the outer waters north of
Port Orford. The next front will arrive this afternoon, producing
gusty south to southwest winds and widespread very steep seas
through tonight. Winds may reach gale force briefly as the front
passes. Another strong front is likely Thursday night into Friday,
marking a general shift to a much colder pattern under westerly
flow. Moderate west winds are expected from Friday onward, with seas
becoming swell driven and remaining elevated through the early part
of next week. -Wright/BPN

&&

.PREV DISCUSSION... /Issued 634 AM PST Wed Dec 22 2021/

DISCUSSION...
A prolonged period of cold and wet weather is expected across SW
Oregon and Northern California over the next 10 days. Significant
winter travel impacts are expected, first at mid to higher
elevations today through Friday morning and then, likely, at low
to middle elevations from Friday/Christmas Eve through
approximately New Year's Day. If you will be traveling during this
time period, be sure to check the latest road conditions and
forecasts before you decide to hit the road. For everyone,
including those who live locally, now is a great time to prepare
for the upcoming wintry weather by packing a winter
travel/survival kit and preparing for colder, potentially snowy
weather. It is likely that elevations down to between 500 and 1500
feet will be impacted by snow at some point during the next 10
days.

This morning an impressively deep and high amplitude trough of
low pressure exists across the eastern Pacific Ocean with an
impressively large and high amplitude high pressure ridge west of
the trough over the central North Pacific extending well into the
Bering Sea to near the Arctic Circle. The trough, which was
mostly closed off from the main polar jet stream flow yesterday,
is now starting to merge back into the main flow. This is
resulting in increasing southwest flow over NorCal and SW Oregon
this morning that's likely to max out at about 150 knots at the
300mb level this evening into Thursday morning.

Scattered light showers this morning with snow levels mostly in
the 3kft to 4kft range are likely to increase across Northern
California and west of the Cascades today, especially along and
near the coast. Model guidance has trended wetter for this
afternoon through Thursday morning as the above mentioned jet
stream energy pumps subtropical moisture northeastward across the
area. This has resulted in the need to upgrade the Winter Weather
Advisory in effect for elevations above 4kft in the Mount Shasta
area to a Winter Storm Warning valid late this afternoon through
early Thursday morning. Numerical models suggest around 1.2 inches
of water is likely to fall in Mount Shasta City and the
surrounding area during a 12 hour time period this evening through
Thursday morning. This is, in part, due to a stronger, longer
duration, and more southerly flow at the 850mb level in that area.

Elsewhere, headlines have remained about the same for this frontal
system. Snow levels are likely to be in the 4-5kft range. The
Winter Weather Advisory for areas east of the Cascades has been
expanded some, mostly in Klamath County, due to more precipitation
expected there tonight into early Thursday.

Late Thursday morning through Friday morning a cold front will
move southward across the area with rain and snow showers as the
snow levels lower from ~4kft to ~2kft. Winter Weather Advisories
remain in effect for some areas for this front. We'll need to be
on the lookout for the potential need to expand the advisories to
other areas west of the Cascades if current wetter trends noted in
the 06Z NAM12 continue and show up in the 12Z SPC HREF guidance.

Christmas Eve Day/Friday begins the time period of most concern
for travel impacts for areas west of the Cascades. A Winter Storm
Watch has been issued for much of the area west of the Cascades
for elevations above 1500 feet from midday Friday through Monday
morning. The cold upper level trough swings in from the Pacific
Friday bringing temperatures of -30 to -35C at 500mb. This cold
air, along with plenty of vorticity and instability, is likely to
bring convective precipitation across the west side. This can
result in snow levels dipping lower in moderate to heavy showers,
also leading to potential accumulations. In fact, some rumbles of
thunder are not outside of the realm of possibility for even
inland areas on Christmas Eve into Christmas Day. Snow levels near
2500 feet on Friday are likely to fall to around 1500 feet
Saturday/Christmas morning.

From Christmas Day through New Year's Day, approximately 5
shortwave troughs move through the area with 850mb temperatures
between -3C and -12C. A rough rule of thumb for snow here at
1370ft MSL at the Rogue Valley International Airport is 850mb
temperatures of about -6C. Said another way, National Blend of
Model probabilities indicate a 75% chance of 6 inches or more of
snowfall at the Medford Airport in a 72 hour period from the 26th
through the 28th with about a 60% probability of 8 inches or
more. While the amount of snowfall in this blend of models may be
a bit overdone and the amount of snowfall compared to that on the
ground at any given time is likely to be less than that, even
just an inch of snow on the ground at the airport can yield
significant travel impacts. For mountainous areas such as Sexton
and Canyon Mountain Pass on upward, snow's likely to be measured
in feet of low density snow during this same time period due to
the cold temperatures and precipitation we're expecting.

Again, if you'll be needing to travel at all in the next 10 days,
now is a good time to get yourself and your means of travel ready
for wintry travel if you have not already done so. Also take note
that this period of wintry weather is likely to bring with it and
behind the coldest temperatures we've recorded, thus far, this
fall-winter. ~BTL

AVIATION...22/12Z TAFs...MVFR/IFR conditions and local LIFR
ceilings and visibilities are expected at the coast and in the West
Side valleys through this morning. Conditions should improve by late
morning or early afternoon as winds increase ahead of a front that
is expected to move onshore tonight. Expect widespread precipitation
and MVFR ceilings, IFR visibilities in areas of snow, and terrain
obscuration to spread inland through today, with mountain wave
turbulence and low level wind shear possible, especially east of the
Cascades. Freezing levels should hover around 4000 ft above MSL.
-BPN

MARINE...Updated 200 AM PST Wednesday, 22 December, 2021...Steep
seas will continue in the near shore waters through this morning,
with very steep and hazardous seas across the outer waters north of
Port Orford. The next front will arrive this afternoon, producing
gusty south to southwest winds and widespread very steep seas
through tonight. Winds may reach gale force briefly as the front
passes. Another strong front is likely Thursday night into Friday,
marking a general shift to a much colder pattern under westerly
flow. Moderate west winds are expected from Friday onward, with seas
becoming swell driven and remaining elevated through the early part
of next week. -BPN/CC

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Winter Weather Advisory from 4 PM this afternoon to 4 AM PST
     Friday above 4500 feet in the for ORZ025>031.
     Winter Storm Watch from Friday afternoon through Monday morning
     above 1500 feet in the for ORZ023>026.
     Winter Weather Advisory from 4 PM this afternoon to 4 AM PST
     Friday for ORZ027-028.

CA...Winter Weather Advisory from 4 PM this afternoon to 4 AM PST
     Friday above 4500 feet in the for CAZ085.
     Winter Storm Watch from Friday afternoon through Monday morning
     above 1500 feet in the for CAZ080.
     Winter Storm Warning from 4 PM this afternoon to 10 AM PST
     Thursday for CAZ080.
     Winter Weather Advisory from 7 AM Thursday to 4 AM PST Friday
     above 4000 feet in the for CAZ082-083.
     Winter Storm Warning from 4 PM this afternoon to 7 AM PST
     Thursday above 4000 feet in the for CAZ082-083.
     Wind Advisory from 1 PM this afternoon to 1 AM PST Thursday for
     CAZ081.

Pacific Coastal Waters...
     Small Craft Advisory until 10 AM PST this morning for
     PZZ350-356-370-376.
     Small Craft Advisory from 1 AM Thursday to 11 AM PST Saturday
     for PZZ350-356-370-376.
     Hazardous Seas Warning until 1 AM PST Thursday for PZZ350-356.
     Hazardous Seas Warning until 1 AM PST Thursday for PZZ370-376.

SBN/SBN/SBN