Alert archive / California / Small Craft Advisories in 2021

Small Craft Advisory 11, NWS Los Angeles, CA

February 9, 2021

NWS Los Angeles, CA issued this small craft advisory at Feb 9, 2021, 2:16 AM PST. It took effect at Feb 10, 2021, 3:00 AM PST. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued
Feb 9, 2021, 2:16 AM PST (10:16 UTC)
In effect from
Feb 10, 2021, 3:00 AM PST
Expired
Feb 11, 2021, 2:15 AM PST
In force
23 hr
Issued by
NWS Los Angeles, CA

The text

As transmitted.

450 
WHUS76 KLOX 091016
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
216 AM PST Tue Feb 9 2021

PZZ673-676-091815-
/O.NEW.KLOX.SC.Y.0011.210210T1100Z-210210T2300Z/
/O.NEW.KLOX.GL.A.0004.210210T2300Z-210211T1100Z/
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-
216 AM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM TO 3 PM PST
WEDNESDAY...
...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
WEDNESDAY NIGHT...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  combined seas 6 to 8 feet possible 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 and 
  Outer waters from Santa Cruz Island to San Clemente Island to 
  60 NM offshore including San Nicolas and Santa Barbara Islands.

* WHEN...For the Small Craft Advisory, from 3 AM to 3 PM PST 
  Wednesday. For the Gale Watch, from Wednesday afternoon 
  through late Wednesday night.

* IMPACTS...Potentially strong winds may 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 consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and combined
seas.

&&

$$

PZZ670-091815-
/O.NEW.KLOX.SC.Y.0011.210210T1100Z-210211T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
216 AM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM WEDNESDAY TO 3 AM PST
THURSDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 3 AM Wednesday to 3 AM PST Thursday.

* 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.

&&

$$
8 follow-up statements
359 
WHUS76 KLOX 091817
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
1017 AM PST Tue Feb 9 2021

PZZ673-676-100230-
/O.CON.KLOX.SC.Y.0011.210210T1100Z-210210T2300Z/
/O.CON.KLOX.GL.A.0004.210210T2300Z-210211T1100Z/
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-
1017 AM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM TO 3 PM PST
WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...

* WHAT...For the Small Craft Advisory, northwest winds 15 to 25
  kt. For the Gale Watch, northwest winds 15 to 25 kt with gusts 
  up to 35 kt and combined seas 6 to 8 feet possible 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 and 
  Outer waters from Santa Cruz Island to San Clemente Island to 
  60 NM offshore including San Nicolas and Santa Barbara Islands.

* WHEN...For the Small Craft Advisory, from 3 AM to 3 PM PST 
  Wednesday. For the Gale Watch, from Wednesday afternoon 
  through late Wednesday night.

* IMPACTS...Potentially strong winds may 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 consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and combined
seas.

&&

$$

PZZ670-100230-
/O.CON.KLOX.SC.Y.0011.210210T1100Z-210211T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
1017 AM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM WEDNESDAY TO
3 AM PST THURSDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 3 AM Wednesday to 3 AM PST Thursday.

* 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.

&&

$$

Phillips
503 
WHUS76 KLOX 092052
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
1252 PM PST Tue Feb 9 2021

PZZ645-100500-
/O.EXB.KLOX.SC.Y.0011.210210T2100Z-210211T0300Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
1252 PM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM TO 7 PM PST
WEDNESDAY...

* WHAT...Northwest winds 15 to 25 kt.

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

* WHEN...From 1 PM to 7 PM PST Wednesday.

* IMPACTS...Potentially strong winds may create dangerous sea 
  conditions which could capsize or damage small and large 
  vessels.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ673-676-100500-
/O.CON.KLOX.SC.Y.0011.210210T1100Z-210210T2300Z/
/O.CON.KLOX.GL.A.0004.210210T2300Z-210211T1100Z/
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-
1252 PM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM TO 3 PM PST
WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...

* WHAT...For the Small Craft Advisory, northwest winds 15 to 25 
  kt. For the Gale Watch, northwest winds 15 to 25 kt with gusts 
  up to 35 kt and combined seas 6 to 8 feet possible 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 and 
  Outer waters from Santa Cruz Island to San Clemente Island to 
  60 NM offshore including San Nicolas and Santa Barbara Islands.

* WHEN...For the Small Craft Advisory, from 3 AM to 3 PM PST 
  Wednesday. For the Gale Watch, from Wednesday afternoon 
  through late Wednesday night.

* IMPACTS...Potentially strong winds may 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 consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and combined
seas.

&&

$$

PZZ670-100500-
/O.CON.KLOX.SC.Y.0011.210210T1100Z-210211T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
1252 PM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM WEDNESDAY TO
3 AM PST THURSDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 3 AM Wednesday to 3 AM PST Thursday.

* 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.

&&

$$

Phillips
432 
WHUS76 KLOX 100422
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
822 PM PST Tue Feb 9 2021

PZZ673-676-101230-
/O.CON.KLOX.SC.Y.0011.210210T1100Z-210210T2300Z/
/O.CON.KLOX.GL.A.0004.210210T2300Z-210211T1100Z/
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-
822 PM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM TO 3 PM PST
WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  combined seas 6 to 9 feet possible 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 Small Craft Advisory, from 3 AM to 3 PM PST 
  Wednesday. For the Gale Watch, from Wednesday afternoon 
  through late Wednesday night.

* IMPACTS...Potentially strong winds may 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 consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and combined
seas.

&&

$$

PZZ670-101230-
/O.CON.KLOX.SC.Y.0011.210210T1100Z-210211T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
822 PM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM WEDNESDAY TO
3 AM PST THURSDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 3 AM Wednesday to 3 AM PST Thursday.

* 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.

&&

$$

PZZ645-101230-
/O.CON.KLOX.SC.Y.0011.210210T2100Z-210211T0300Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
822 PM PST Tue Feb 9 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 PM TO 7 PM PST
WEDNESDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 1 PM to 7 PM PST Wednesday.

* 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.

&&

$$
772 
WHUS76 KLOX 101156
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
356 AM PST Wed Feb 10 2021

PZZ673-676-102000-
/O.CON.KLOX.SC.Y.0011.000000T0000Z-210210T2300Z/
/O.UPG.KLOX.GL.A.0004.210210T2300Z-210211T1100Z/
/O.NEW.KLOX.GL.W.0005.210210T2300Z-210211T1100Z/
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-
356 AM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...
...GALE WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 3 AM PST
THURSDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  combined seas 6 to 9 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 and 
  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 3 PM this afternoon to 3 AM 
  PST Thursday. For the Small Craft Advisory, until 3 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.

&&

$$

PZZ650-102000-
/O.EXB.KLOX.SC.Y.0011.210210T2100Z-210211T0500Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
356 AM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO
9 PM PST THIS EVENING...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 1 PM this afternoon to 9 PM PST this evening.

* 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.

&&

$$

PZZ645-102000-
/O.EXT.KLOX.SC.Y.0011.210210T2100Z-210211T0500Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
356 AM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO
9 PM PST THIS EVENING...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 1 PM this afternoon to 9 PM PST this evening.

* 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.

&&

$$

PZZ670-102000-
/O.CON.KLOX.SC.Y.0011.000000T0000Z-210211T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
356 AM PST Wed Feb 10 2021

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

* WHAT...Hazardous sea conditions.

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

* WHEN...From 3 AM Wednesday to 3 AM PST Thursday.

* 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.

&&

$$
850 
WHUS76 KLOX 101948
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
1148 AM PST Wed Feb 10 2021

PZZ673-676-110400-
/O.CON.KLOX.SC.Y.0011.000000T0000Z-210210T2300Z/
/O.CON.KLOX.GL.W.0005.210210T2300Z-210211T1100Z/
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-
1148 AM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
3 AM PST THURSDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  combined seas 6 to 9 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 and 
  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 3 PM this afternoon to 3 AM 
  PST Thursday. For the Small Craft Advisory, until 3 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.

&&

$$

PZZ670-110400-
/O.CON.KLOX.SC.Y.0011.000000T0000Z-210211T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
1148 AM PST Wed Feb 10 2021

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

* WHAT...Hazardous sea conditions.

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

* WHEN...From 3 AM Wednesday to 3 AM PST Thursday.

* 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.

&&

$$

PZZ645-110400-
/O.CON.KLOX.SC.Y.0011.210210T2100Z-210211T0500Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
1148 AM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 1 PM this afternoon to 9 PM PST this evening.

* 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.

&&

$$

PZZ650-110400-
/O.CON.KLOX.SC.Y.0011.210210T2100Z-210211T0500Z/
East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA
including Santa Cruz Island-
1148 AM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 1 PM this afternoon to 9 PM PST this evening.

* 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.

&&

$$

Phillips
838 
WHUS76 KLOX 110353
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
753 PM PST Wed Feb 10 2021

PZZ673-676-111200-
/O.CAN.KLOX.GL.W.0005.000000T0000Z-210211T1100Z/
/O.NEW.KLOX.SC.Y.0012.210211T0353Z-210212T1100Z/
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-
753 PM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PST FRIDAY...

* 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 3 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.

&&

$$

PZZ645-650-110500-
/O.CAN.KLOX.SC.Y.0011.000000T0000Z-210211T0500Z/
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-
753 PM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Conditions have fallen below Advisory levels.

$$

PZZ670-111200-
/O.EXT.KLOX.SC.Y.0011.000000T0000Z-210212T1100Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
753 PM PST Wed Feb 10 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PST FRIDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...Until 3 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.

&&

$$
910 
WHUS76 KLOX 111007
MWWLOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
207 AM PST Thu Feb 11 2021

PZZ645-111815-
/O.NEW.KLOX.SC.Y.0013.210212T1700Z-210213T1100Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
207 AM PST Thu Feb 11 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM FRIDAY TO 3 AM PST
SATURDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 9 AM Friday to 3 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.

&&

$$

PZZ673-676-111815-
/O.EXT.KLOX.SC.Y.0012.000000T0000Z-210212T2300Z/
/O.NEW.KLOX.GL.A.0005.210212T2300Z-210215T1100Z/
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-
207 AM PST Thu Feb 11 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PST FRIDAY...
...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  combined seas 7 to 12 feet possible 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 and 
  Outer waters from Santa Cruz Island to San Clemente Island to 
  60 NM offshore including San Nicolas and Santa Barbara Islands.

* WHEN...For the Small Craft Advisory, until 3 PM PST Friday. 
  For the Gale Watch, from Friday afternoon through late Sunday 
  night.

* IMPACTS...Potentially strong winds may 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 consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and combined
seas.

&&

$$

PZZ670-111815-
/O.EXT.KLOX.SC.Y.0011.000000T0000Z-210213T2300Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
207 AM PST Thu Feb 11 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PST SATURDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...Until 3 PM 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.

&&

$$
326 
WHUS76 KLOX 111015 AAA
MWWLOX

URGENT - MARINE WEATHER MESSAGE...UPDATED
National Weather Service Los Angeles/Oxnard CA
215 AM PST Thu Feb 11 2021

PZZ670-111815-
/O.CAN.KLOX.SC.Y.0011.000000T0000Z-210213T2300Z/
/O.EXB.KLOX.SC.Y.0013.210212T0500Z-210213T2300Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
215 AM PST Thu Feb 11 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 3 PM
PST SATURDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 9 PM this evening to 3 PM 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.

&&

$$

PZZ673-676-111815-
/O.CON.KLOX.SC.Y.0012.000000T0000Z-210212T2300Z/
/O.CON.KLOX.GL.A.0005.210212T2300Z-210215T1100Z/
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-
215 AM PST Thu Feb 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST FRIDAY...
...GALE WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE SUNDAY NIGHT...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  combined seas 7 to 12 feet possible 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 and 
  Outer waters from Santa Cruz Island to San Clemente Island to 
  60 NM offshore including San Nicolas and Santa Barbara Islands.

* WHEN...For the Small Craft Advisory, until 3 PM PST Friday. 
  For the Gale Watch, from Friday afternoon through late Sunday 
  night.

* IMPACTS...Potentially strong winds may 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 consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and combined
seas.

&&

$$

PZZ645-111815-
/O.CON.KLOX.SC.Y.0013.210212T1700Z-210213T1100Z/
Point Piedras Blancas to Point Sal westward out to 10 NM-
215 AM PST Thu Feb 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM FRIDAY TO
3 AM PST SATURDAY...

* WHAT...Hazardous sea conditions.

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

* WHEN...From 9 AM Friday to 3 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.

&&

$$

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 Feb 8, 9:10 PM PST, 5 hours 6 minutes earlier.

Area forecast discussion, Feb 8, 9:10 PM PST, 5 hours 6 minutes before
Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
910 PM PST Mon Feb 8 2021

.SYNOPSIS...08/807 PM.

Expect cooler temperatures this week with overnight and morning
low clouds and fog in coastal and valley areas this evening.
There is a chance of light precipitation at times across the
region late Thursday through Saturday as an upper level low passes
near the area.

&&

.SHORT TERM (MON-THU)...08/841 PM.

***UPDATE***

No significant changes to the forecast. The deepening marine layer
and steady onshore push is allowing low clouds (with minimal to no
fog, unlike last night) to surge inland this evening. These clouds
are already pushing into some valleys, and will continue to
advance into the mountain foothills by morning...although it will
be very hard to monitor with the ample high clouds obscuring the
view from space. With the deepening marine layer, some drizzle is
possible. Temperatures will drop tomorrow without surprise as a
result.

***From Previous Discussion***

Overall, 12Z models in good agreement through the short term
period. At upper levels, weak ridge will persist over the area
through tonight with a weak trough moving across the area Tuesday
night/Wednesday morning then ridging again Wednesday afternoon
through Thursday. Near the surface, weak onshore flow will prevail
with some weak northerly flow developing Tuesday night.

Forecast-wise, main issue in the short term will be the marine
layer stratus. With lowering H5 heights tonight and continued
onshore gradients, expect the marine inversion to deepen. So, by
Tuesday morning, will expect widespread stratus across the coasts
and valleys and even pushing into the lower coastal slopes. Also
with the deepening inversion, some patchy drizzle will be possible
tonight/Tuesday morning south of Point Conception. Stratus should
dissipate back to the coast Tuesday afternoon. With the weak
northerly flow anticipated Tuesday night, stratus should be
generally be limited to the coastal plains of Ventura/LA counties
and interior sections of San Luis Obispo/Santa Barbara counties
Tuesday night and Wednesday morning. For Wednesday night and
Thursday, do not anticipated much, if any, stratus development.
Other than the marine layer stratus, varying amounts of high
clouds will drift overhead through Tuesday night, resulting in
partly to mostly cloudy skies for the area.

As for winds, the onshore gradients will generate some gusty
southwesterly winds this afternoon and Tuesday afternoon across
interior sections. However, speeds should remain below advisory
levels. For Tuesday night through Thursday, there will be some
weak northerly gradients developing. So, will anticipate some
locally gusty northerly winds in the usual spots (Santa Ynez Range
and I-5 Corridor). At this time, do not anticipate the northerly
winds to reach advisory levels.

As for temperatures, will expect a cool Tuesday for the area due
to the onshore gradients and significant marine influence. For
Wednesday and Thursday, a gradual warming trend is anticipated
with less marine influence and rising H5 heights and thicknesses.

.LONG TERM (FRI-MON)...08/204 PM.

Overall, 12Z models have the same general idea, but definitely
differ in the details. One upper level flow will move over the
area Thursday and Friday, followed by another upper level low on
Saturday night and Sunday.

For the Thursday night/Friday system, the ECMWF moves the upper
low south/southeast across the coastal waters while the GFS has
the low tracking southeast over the land. So, the GFS indicates a
bit better chance of precipitation for the area than the ECMWF.
However, either solution does not generate much precipitation for
the area. Will keep with the idea of low chance/slight chance POPs
for this time frame. QPF amounts, if any, will be very light with
most areas potentially receiving under 0.10 inches. Snow levels
look to remain quite high, around 7000 feet or higher. So, no
significant snowfall issues are anticipated.

After a brief respite Friday night/Saturday morning, the next
system is forecast to impact the area Saturday afternoon through
Sunday. ECMWF is a bit faster with this system than the GFS, but
both models indicate some precipitation chances between Saturday
afternoon and Sunday afternoon. Looking at QPF progs, this system
may produce a bit more widespread shower activity across the area.
However, precipitation total will be light with initial estimates
for under 0,25 inches for the area. Snow levels with this system
will be lower, ranging from around 6500 feet on Saturday, but
dropping to around 4500 feet Saturday night and Sunday. So,
depending on the amount of shower activity, there could be some
snow issues at the lower mountain elevations. Will need to watch
this possibility over the next few days.

&&

.AVIATION...09/0509Z.

At 05Z over KLAX, the marine layer was 1900 feet deep. The top of
the inversion was at 3600 feet and 13 degrees Celsius.

High confidence of generally MVFR and locally IFR CIGS at all
sites through Tuesday morning (except KPMD KWJF), with much higher
cats compared to last night. Moderate confidence in timing, plus
or minus 3 hours. There is a chance for LIFR FG at KSMX (40%)
KSBP (20%) KSBP (20%), with little to no chance at other sites.
Relatively poor clearing likely in the afternoon. With ample high
clouds expected, satellite detection of low clouds will be nearly
impossible which will make TAF updates challenging.

KLAX...High confidence in MVFR CIGS most common, with a 20% chance
for brief IFR 09-15Z. No chance of LIFR. Moderate confidence in
timing plus or minus 3 hours. Southeast winds likely tonight, but
most likely will stay below 8 kt.

KBUR...High confidence in IFR CIGS common 09-15Z, and MVFR CIGS
common otherwise through 20Z. Chance for LIFR is less than 10%
Moderate confidence in timing plus or minus 3 hours.

&&

.MARINE...08/902 PM.

Fairly calm and under Small Craft Advisory (SCA) conditions will
continue through Tuesday night, with a mixture of small long
period and short period swells. NW winds will increase above SCA
from the Central Coast to San Nicolas Island on Wednesday before
relaxing on Thursday. There is a 20% chance of SCA winds impacting
the West Central Santa Barbara Channel. Otherwise, short period
seas will build everywhere Wednesday into Thursday from these
winds, including the inner waters. A series of storm systems will
bring widespread gusty winds (20-30 KT at times) and building seas
(generally 6-12 feet) with short periods, peaking Friday through
Sunday.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

.HAZARD POTENTIAL OUTLOOK (THU-MON).

No significant hazards expected.

&&

PUBLIC...Thompson/Kittell
AVIATION...Kittell
MARINE...RK
SYNOPSIS...jld

weather.gov/losangeles

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 9, 2:16 AM PSTGale WatchLOX26 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.