Alert archive / California / Small Craft Advisories in 2021

Small Craft Advisory 176, NWS Los Angeles, CA

December 30, 2021

NWS Los Angeles, CA issued this small craft advisory at Dec 30, 2021, 8:11 AM PST. It took effect at Dec 30, 2021, 6:00 PM PST. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 2021, 8:11 AM PST (16:11 UTC)
In effect from
Dec 30, 2021, 6:00 PM PST
Expired
Jan 1, 2022, 2:00 AM PST
In force
32 hr
Issued by
NWS Los Angeles, CA

The text

As transmitted.

530 
WHUS76 KLOX 301611
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
811 AM PST Thu Dec 30 2021

PZZ670-673-310015-
/O.NEW.KLOX.SC.Y.0176.211231T0200Z-211231T1400Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
811 AM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
PST FRIDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM 
  and Waters from Pt. Sal to Santa Cruz Island CA and westward 
  60 nm including San Miguel and Santa Rosa Islands.

* WHEN...From 6 PM this evening to 6 AM PST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ650-302200-
/O.EXB.KLOX.SC.Y.0174.000000T0000Z-211230T2200Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
811 AM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PST THIS AFTERNOON...

* WHAT...Hazardous sea conditions.

* WHERE...East Santa Barbara Channel from Pt. Conception to Pt. 
  Mugu CA including Santa Cruz Island.

* WHEN...Until 2 PM PST this afternoon.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ655-302200-
/O.EXT.KLOX.SC.Y.0174.000000T0000Z-211230T2200Z/
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
811 AM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* WHAT...Hazardous sea conditions.

* WHERE...Inner waters from Point Mugu to San Mateo Pt. CA 
  including Santa Catalina and Anacapa Islands.

* WHEN...Until 2 PM PST this afternoon.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
7 follow-up statements
668 
WHUS76 KLOX 302228
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
228 PM PST Thu Dec 30 2021

PZZ650-655-310630-
/O.EXP.KLOX.SC.Y.0174.000000T0000Z-211230T2200Z/
/O.NEW.KLOX.SC.Y.0177.211231T2100Z-220101T1000Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
228 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM FRIDAY TO 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...East Santa Barbara Channel from Pt. Conception to Pt. 
  Mugu CA including Santa Cruz Island and Inner waters from 
  Point Mugu to San Mateo Pt. CA including Santa Catalina and 
  Anacapa Islands.

* WHEN...From 1 PM Friday to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ676-310630-
/O.EXB.KLOX.SC.Y.0176.211231T0200Z-211231T2200Z/
/O.NEW.KLOX.GL.W.0052.211231T2200Z-220101T1000Z/
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
228 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 2 PM
PST FRIDAY...
...GALE WARNING IN EFFECT FROM 2 PM FRIDAY TO 2 AM PST SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  combined seas 7 to 12 feet expected when conditions are worst.

* WHERE...Outer waters from Santa Cruz Island to San Clemente 
  Island to 60 NM offshore including San Nicolas and Santa 
  Barbara Islands.

* WHEN...For the Gale Warning, from 2 PM Friday to 2 AM PST 
  Saturday. For the Small Craft Advisory, from 6 PM this evening 
  to 2 PM PST Friday.

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ673-310630-
/O.EXT.KLOX.SC.Y.0176.211231T0200Z-211231T2200Z/
/O.NEW.KLOX.GL.W.0052.211231T2200Z-220101T1000Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
228 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO
2 PM PST FRIDAY...
...GALE WARNING IN EFFECT FROM 2 PM FRIDAY TO 2 AM PST SATURDAY...

* WHAT...Northwest winds 25 to 30 kt with gusts up to 40 kt and 
  combined seas 10 to 12 feet expected when conditions are worst.

* WHERE...Waters from Pt. Sal to Santa Cruz Island CA and 
  westward 60 nm including San Miguel and Santa Rosa Islands.

* WHEN...For the Gale Warning, from 2 PM Friday to 2 AM PST 
  Saturday. For the Small Craft Advisory, from 6 PM this evening 
  to 2 PM PST Friday.

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ645-310630-
/O.NEW.KLOX.SC.Y.0177.211231T2100Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
228 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM FRIDAY TO 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal westward out to 10 
  NM.

* WHEN...From 1 PM Friday to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ670-310630-
/O.EXT.KLOX.SC.Y.0176.211231T0200Z-220101T1400Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
228 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO
6 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...From 6 PM this evening to 6 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
997 
WHUS76 KLOX 310415
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
815 PM PST Thu Dec 30 2021

PZZ673-676-311215-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-211231T2200Z/
/O.CON.KLOX.GL.W.0052.211231T2200Z-220101T1000Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
815 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST FRIDAY...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM FRIDAY TO 2 AM PST
SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  combined seas 7 to 12 feet expected when conditions are worst.

* WHERE...Outer waters from Santa Cruz Island to San Clemente 
  Island to 60 NM offshore including San Nicolas and Santa 
  Barbara Islands.

* WHEN...For the Gale Warning, from 2 PM Friday to 2 AM PST 
  Saturday. For the Small Craft Advisory, from 6 PM this evening 
  to 2 PM PST Friday.

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ670-311215-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-220101T1400Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
815 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...From 6 PM this evening to 6 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ645-650-655-311215-
/O.CON.KLOX.SC.Y.0177.211231T2100Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
815 PM PST Thu Dec 30 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 PM FRIDAY TO
2 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...East Santa Barbara Channel from Pt. Conception to Pt. 
  Mugu CA including Santa Cruz Island and Inner waters from 
  Point Mugu to San Mateo Pt. CA including Santa Catalina and 
  Anacapa Islands.

* WHEN...From 1 PM Friday to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
069 
WHUS76 KLOX 310950
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
150 AM PST Fri Dec 31 2021

PZZ673-676-311800-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-211231T2200Z/
/O.CON.KLOX.GL.W.0052.211231T2200Z-220101T1000Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
150 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
2 AM PST SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and
  combined seas 7 to 12 feet expected when conditions are worst.

* WHERE...Outer waters from Santa Cruz Island to San Clemente 
  Island to 60 NM offshore including San Nicolas and Santa 
  Barbara Islands and Waters from Pt. Sal to Santa Cruz Island 
  CA and westward 60 nm including San Miguel and Santa Rosa 
  Islands.

* WHEN...For the Gale Warning, from 2 PM this afternoon to 2 AM 
  PST Saturday. For the Small Craft Advisory, until 2 PM PST 
  this afternoon.

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ670-311800-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-220101T1400Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
150 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...Until 6 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ645-650-655-311800-
/O.CON.KLOX.SC.Y.0177.211231T2100Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
150 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 2 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest 
  California. 

* WHEN...From 1 PM this afternoon to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
315 
WHUS76 KLOX 311615
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
815 AM PST Fri Dec 31 2021

PZZ673-676-010015-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-211231T2200Z/
/O.CON.KLOX.GL.W.0052.211231T2200Z-220101T1000Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
815 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
2 AM PST SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  combined seas 7 to 12 feet expected when conditions are worst.

* WHERE...Outer waters from Santa Cruz Island to San Clemente 
  Island to 60 NM offshore including San Nicolas and Santa 
  Barbara Islands and Waters from Pt. Sal to Santa Cruz Island 
  CA and westward 60 nm including San Miguel and Santa Rosa 
  Islands.

* WHEN...For the Gale Warning, from 2 PM this afternoon to 2 AM 
  PST Saturday. For the Small Craft Advisory, until 2 PM PST 
  this afternoon.

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ670-010015-
/O.EXT.KLOX.SC.Y.0176.000000T0000Z-220101T1000Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
815 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ645-010015-
/O.EXT.KLOX.SC.Y.0177.211231T2200Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
815 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO
2 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest California.

* WHEN...From 2 PM this afternoon to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ650-010015-
/O.EXT.KLOX.SC.Y.0177.211231T1615Z-220101T1000Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
815 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest California.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ655-010015-
/O.EXT.KLOX.SC.Y.0177.211231T2200Z-220101T1000Z/
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
815 AM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO
2 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest California.

* WHEN...From 2 PM this afternoon to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
103 
WHUS76 KLOX 312132
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
132 PM PST Fri Dec 31 2021

PZZ673-676-011000-
/O.EXP.KLOX.SC.Y.0176.000000T0000Z-211231T2200Z/
/O.CON.KLOX.GL.W.0052.211231T2200Z-220101T1000Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
132 PM PST Fri Dec 31 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 2 AM PST SATURDAY...

* WHAT...Northwest winds 25 to 30 kt with gusts up to 35 kt and 
  combined seas 9 to 11 feet expected when conditions are worst.

* WHERE...Outer waters from Santa Cruz Island to San Clemente 
  Island to 60 NM offshore including San Nicolas and Santa 
  Barbara Islands and Waters from Pt. Sal to Santa Cruz Island 
  CA and westward 60 nm including San Miguel and Santa Rosa 
  Islands.

* WHEN...Until 2 AM PST Saturday. 

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ670-011000-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-220101T1000Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
132 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ645-011000-
/O.CON.KLOX.SC.Y.0177.211231T2200Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
132 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest California.

* WHEN...From 2 PM this afternoon to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ650-011000-
/O.CON.KLOX.SC.Y.0177.000000T0000Z-220101T1000Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
132 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest California.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ655-011000-
/O.CON.KLOX.SC.Y.0177.211231T2200Z-220101T1000Z/
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
132 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Portions of the coastal waters of southwest California.

* WHEN...From 2 PM this afternoon to 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
807 
WHUS76 KLOX 010429
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
829 PM PST Fri Dec 31 2021

PZZ673-676-011000-
/O.CON.KLOX.GL.W.0052.000000T0000Z-220101T1000Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
829 PM PST Fri Dec 31 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 2 AM PST SATURDAY...

* WHAT...Northwest winds 25 to 30 kt with gusts up to 40 kt and
  combined seas 11 to 13 feet when conditions are worst.

* WHERE...Outer waters from Santa Cruz Island to San Clemente 
  Island to 60 NM offshore including San Nicolas and Santa 
  Barbara Islands and Waters from Pt. Sal to Santa Cruz Island 
  CA and westward 60 nm including San Miguel and Santa Rosa 
  Islands.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Strong winds will create dangerous sea conditions 
  which could capsize or damage small and large vessels.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ670-011000-
/O.CON.KLOX.SC.Y.0176.000000T0000Z-220101T1000Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
829 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ645-011000-
/O.CON.KLOX.SC.Y.0177.000000T0000Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
829 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal westward out to 10 
  NM.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ650-011000-
/O.CON.KLOX.SC.Y.0177.000000T0000Z-220101T1000Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
829 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...East Santa Barbara Channel from Pt. Conception to Pt. 
  Mugu CA including Santa Cruz Island.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ655-011000-
/O.CON.KLOX.SC.Y.0177.000000T0000Z-220101T1000Z/
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
829 PM PST Fri Dec 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Inner waters from Point Mugu to San Mateo Pt. CA 
  including Santa Catalina and Anacapa Islands.

* WHEN...Until 2 AM PST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
032 
WHUS76 KLOX 011001
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
201 AM PST Sat Jan 1 2022

PZZ673-676-011700-
/O.EXP.KLOX.GL.W.0052.000000T0000Z-220101T1000Z/
/O.NEW.KLOX.SC.Y.0001.220101T1001Z-220101T1700Z/
Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm
including San Miguel and Santa Rosa Islands-
Outer waters from Santa Cruz Island to San Clemente Island to
60 NM offshore including San Nicolas and Santa Barbara Islands-
201 AM PST Sat Jan 1 2022

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PST THIS MORNING...
...GALE WARNING HAS EXPIRED...

* WHAT...Hazardous sea conditions.

* WHERE...Waters from Pt. Sal to Santa Cruz Island CA and 
  westward 60 nm including San Miguel and Santa Rosa Islands and 
  Outer waters from Santa Cruz Island to San Clemente Island to 
  60 NM offshore including San Nicolas and Santa Barbara Islands.

* WHEN...Until 9 AM PST this morning.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ670-011700-
/O.EXP.KLOX.SC.Y.0176.000000T0000Z-220101T1000Z/
/O.NEW.KLOX.SC.Y.0001.220101T1001Z-220101T1700Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
201 AM PST Sat Jan 1 2022

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS 
MORNING...

* WHAT...Hazardous sea conditions.

* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.

* WHEN...Until 9 AM PST this morning.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ645-650-655-011115-
/O.EXP.KLOX.SC.Y.0177.000000T0000Z-220101T1000Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
Inner waters from Point Mugu to San Mateo Pt. CA including Santa
Catalina and Anacapa Islands-
201 AM PST Sat Jan 1 2022

...SMALL CRAFT ADVISORY HAS EXPIRED...

Conditions have diminished below advisory levels.

$$

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Los Angeles, CA wrote its last area forecast discussion before this small craft advisory went out at Dec 30, 3:58 AM PST, 4 hours 13 minutes earlier.

Area forecast discussion, Dec 30, 3:58 AM PST, 4 hours 13 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
358 AM PST Thu Dec 30 2021

Updated Aviation Discussion

.SYNOPSIS...30/220 AM.

A strong storm system will affect most of the region through
this evening. It will bring rain, wind, and low elevation mountain
snow to the area. The system will have much less effect across the
Central Coast. Temperatures will remain significantly below
average. Dry weather is expected Friday through the upcoming
holiday weekend and likely beyond.

&&

.SHORT TERM (TDY-SAT)...30/303 AM.

An upper low 140 miles west of Pt Conception is spinning a narrow
 .8 to 1.0 inch PW plume into VTA and LA counties. This band was
stalled over VTA county for most of the day Wednesday but has been
pushed south into LA county by the southerly trajectory of the
upper low. All high rez short range deterministic and ensemble
mdls have converged on a solution for today. The heaviest rain
will fall in a 30 mile swath covering most of LA coast and San
Gabriel Vly...here its likely that 2 to 4 inches of addition rain
will fall. The rest of LA county will likely see 1 to 2 inches of
additional rain. Eastern VTA county will see .75 and 1.5 inches
while western VTA county will only see an additional quarter to
half inch. Little or no rain will fall over SLO and SBA counties.
The bulk of today's rain fall during the morning hours and will
then taper off quickly in the evening.

Cooler air aloft will move into the area this morning. Mid level
lapse rates will increase as well. MUCAPE values will increase to
about 500 J/kg this morning. All of these along with some upper
level diffluence will be enough to trigger heavier convective
showers or even low top TSTMs. The best area for TSTM development
will be the cst/vly sections of VTA and LA counties as well as the
waters of their coasts. If this convection does occur it could
easily produce rainfall rates of one inch per hour which would
bring a threat of debris flows to the recent burn areas. A Flash
Flood Watch is in effect for all of the recent burn areas in LA
county.

Snow levels will be near 5000 ft and locally down to 4500 ft. When
all is said and done areas above 6500 ft should see 1 to 3 ft of
new snow with the higher amounts over the San Gabriels. 6 to 12
inches is possible above 5000 ft and there could be some local 1
to 3 inch accumulations between 4500 and 5000 ft. The winter storm
warning for the SBA county mtns has been cancelled as that area is
not forecast to see little or no additional precipitation. The
ending times of both the VTA and LA mtn warnings were shortened as
well due to the forecasted quicker end to the rain and snow.
Please see the product LAXWSWLOX for all the details.

It will be another day with most max temps in the 50s or about 12
degrees blo normal.

Dry NW flow will set up on Friday and will kick off the first xtnd
period of dry weather in while. Gusty north winds will develop and
may reach advisory levels through the I-5 corridor later in the
afternoon or evening. There will be few degrees of warming do the
added sunshine and some sites may break into the lower 60s.

2022 will dawn sunny as a weak ridge moves into the state. A weak
Santa Ana will develop as offshore flow continues from the north
and develops from the east. It does not look like a big event with
only localized advisory gusts in the most wind prone areas.
Unfortunately the offshore flow will bring in enough cool
interior air that there will be no warm up.

.LONG TERM (SUN-WED)...30/330 AM.

Both the GFS and EC deterministic mdls as well as their respective
ensembles show a cold 505 dam upper low moving out of the Gulf of
Alaska. This will push the ridge out of the state and set up fast
moving WSW flow over the state. The energy from the system will
push slowly south and will bring a slight chc of rain to SLO
county of Tuesday. But other than that it will be dry. Skies will
likely be partly cloudy as there will be plenty of moisture
embedded in the flow aloft. Hgts will rise some and max temps
will rise into the 60s but will still remain several degrees blo
normal through the period.

&&

.AVIATION...30/1156Z.

At 12Z at KLAX, there was no marine layer. There was a 10000 ft
deep moist layer.

Low confidence in TAFs. Cigs and vis will vary frequently. LIFR
conds are unlikely at most TAF sites and if they do occur they
will not persist for more than 30 minutes. Heaviest rain, and
likely worst flight conditions, will occur across Ventura and LA
counties through Thursday 18Z. KPRB has a 30% chance of VLIFR
conds thru Thursday 18Z.

KLAX...Low confidence in TAF. Cigs and vis will vary frequently.
There is a 20 percent chc of brief BKN004 +RA conds thru 16Z.
Improving conditions are likely after 00Z. A persistent east to
southeast wind will continue through 20Z with speeds 10-15 knots
likely. Then, moderate confidence in east wind component of 7 kt
or less.

KBUR...Low confidence in TAF. Cigs and vis will vary frequently.
There is a 20 percent chc of brief BKN004 +RA conds thru 16Z.
Improving conditions are likely after 00Z.

&&

.MARINE...29/1130 PM.

Some gusty south to southeast winds may linger over the waters
from Point Conception to San Nicolas Island through the early
morning. Otherwise high confidence that the waters from the
Central Coast to San Nicolas Island will remain below SCA level
through Thursday afternoon. Moderate confidence in SCA level south
to southeast winds continuing for the waters off the coast of LA
and Orange Counties through mid-morning. There is a chance they
may diminish sooner than forecast, depending on how quickly the
storm system moves to the south.

By Thursday evening, gusty northwest winds make a return to the
outer waters from the Central Coast to San Nicolas Island. High
confidence in SCA level winds developing either Thursday night or
Friday morning lasting through Friday night. On Friday afternoon
and evening, moderate confidence in SCA level winds expanding to
the western portion of the Santa Barbara Channel and possibly into
the waters from Anacapa Island to Catalina Island as well.
Hazardous seas over 10 feet are also possible for the outer waters
on Friday.

Winds and seas are expected to drop back below SCA level through
the weekend.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Winter Storm Warning in effect until 2 PM PST this afternoon
      for zone 53. (See LAXWSWLOX).
     Winter Storm Warning in effect until 8 PM PST this evening
      for zone 54. (See LAXWSWLOX).
     Flash Flood Watch in effect through this afternoon for zones
      54-59. (See LAXFFALOX).
PZ...Small Craft Advisory in effect until 10 AM PST this morning
      for zone 655. (See LAXMWWLOX).

&&

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

No significant hazards expected.

&&

PUBLIC...Rorke
AVIATION...Rorke/Lund
MARINE...Stewart
SYNOPSIS...Rorke

weather.gov/losangeles

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 29, 4:10 PM PSTSmall Craft AdvisoryLOX11 hr
Dec 29, 11:02 PM PSTAreal Flood AdvisoryLOXLos Angeles, Ventura6 hr
Dec 30, 4:31 AM PSTSpecial Marine WarningLOX29 min
Dec 30, 4:54 AM PSTAreal Flood AdvisoryLOXLos Angeles, Ventura6 hr
Dec 30, 4:57 AM PSTSpecial Marine WarningLOX33 min
Dec 30, 10:47 AM PSTAreal Flood AdvisoryLOXLos Angeles, Ventura4 hr
Dec 30, 2:28 PM PSTGale WarningLOX36 hr
Dec 30, 2:28 PM PSTSmall Craft AdvisoryLOX36 hr

Nearby

Small Craft Advisories in California, 2021Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.