Alert archive / California / High Surf Warnings in 2023

High Surf Warning 2, NWS San Diego, CA

December 27, 2023Orange County, San Diego County, California

NWS San Diego, CA issued this high surf warning at Dec 27, 2023, 1:41 PM PST for Orange County, San Diego County, California. It took effect at Dec 28, 2023, 8:00 AM PST. It was in force for 4 days. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 27, 2023, 1:41 PM PST (21:41 UTC)
In effect from
Dec 28, 2023, 8:00 AM PST
Expired
Jan 1, 2024, 2:00 AM PST
In force
4 days
Issued by
NWS San Diego, CA

Counties Orange County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 53 km from the middle of the area, began a volume at 21:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 28, 4:00 PM PSTFOG 0.258 Sw Poway, CAVISIBILITY WAS 1/4 MILE AT MIRAMAR MCAS (KNKX) FROM 848 PM TO 855 PM.
Dec 30, 2:46 PM PSTHAIL 0.251 Ese Palomar Mountain, CABirch Hill, Palomar Mountain at 5700 feet. Very small hail (less than BB size) accumulating a little bit along with moderately heavy showers.
Dec 30, 5:52 PM PSTCOASTAL FLOOD1 W Seal Beach, CALow-lying beach parking lots closed in Seal Beach due to coastal flooding.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 9.7 hours before the alert went out and 62 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, San Diego, CA at 12:00Z on 2023-12-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 12:00Z on 2023-12-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1825 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

428 
WHUS46 KSGX 272141
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
141 PM PST Wed Dec 27 2023

CAZ043-280545-
/O.UPG.KSGX.SU.Y.0011.231228T1600Z-240101T1000Z/
/O.NEW.KSGX.SU.W.0002.231228T1600Z-240101T1000Z/
San Diego County Coastal Areas-
141 PM PST Wed Dec 27 2023

...HIGH SURF WARNING IN EFFECT FROM 8 AM THURSDAY TO 2 AM PST
MONDAY...

* WHAT...Dangerously large breaking waves of 8-12 feet with sets 
  up to 15 feet

* WHERE...San Diego County Coastal Areas.

* WHEN...From 8 AM Thursday to 2 AM PST Monday.

* IMPACTS...Breaking waves can sweep people off jetties and 
  docks, and into dangerous seas. Life-threatening swimming 
  conditions and significant beach erosion can be expected.

* ADDITIONAL DETAILS...Highest sets are expected to be tonight
  into Thursday, and again Friday night into Saturday. 

High tides at La Jolla:

 Thursday 5.9 feet at 904 AM. 
 Friday: 5.7 feet at 939 AM. 
 Saturday: 5.3 feet at 1014 AM. 
 Sunday: 4.9 feet at 1051 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

CAZ552-280545-
/O.CON.KSGX.SU.Y.0011.231228T1600Z-240101T1000Z/
Orange County Coastal Areas-
141 PM PST Wed Dec 27 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 8 AM THURSDAY TO
2 AM PST MONDAY...

* WHAT...Large breaking waves of 6 to 12 feet. Highest surf in
  northern Orange County.

* WHERE...Orange County Beaches.

* WHEN...From 8 AM Thursday to 2 AM Monday.

* IMPACTS...Dangerous swimming and surfing conditions and
  localized beach erosion. Minor tidal overflow during the morning at
  vulnerable low-lying coastal areas such as beach parking lots 
  and walkways.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

$$
16 follow-up statements
580 
WHUS46 KSGX 280501
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
901 PM PST Wed Dec 27 2023

CAZ043-281315-
/O.NEW.KSGX.CF.Y.0003.231228T1600Z-240101T1000Z/
/O.CON.KSGX.SU.W.0002.231228T1600Z-240101T1000Z/
San Diego County Coastal Areas-
901 PM PST Wed Dec 27 2023

...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 AM THURSDAY TO 2 AM
PST MONDAY...
...HIGH SURF WARNING REMAINS IN EFFECT FROM 8 AM THURSDAY TO 2 AM
PST MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking
  waves of 8 to 12 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, minor coastal flooding is expected.

* WHERE...San Diego County Coastal Areas.

* WHEN...From 8 AM Thursday to 2 AM PST Monday. Highest surf will
  be Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Breaking waves can sweep 
  people off jetties and docks, and into dangerous seas. Life-
  threatening swimming conditions and significant beach erosion 
  can be expected.

* ADDITIONAL DETAILS...Locations most susceptible to flooding
  include Cardiff and Seaside State Beaches, portions of Del Mar,
  La Jolla Shores, Mission Beach, and Imperial Beach.

  Here are the projected highest tides of each day for La Jolla:
  Thursday, December 28: 6.0 feet at 904 AM.
  Friday, December 29: 5.7 feet at 939 AM.
  Saturday, December 30: 5.3 feet at 1014 AM
  Sunday, December 31: 4.9 feet at 1051 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

CAZ552-281315-
/O.NEW.KSGX.CF.Y.0003.231228T1600Z-240101T1000Z/
/O.CON.KSGX.SU.Y.0011.231228T1600Z-240101T1000Z/
Orange County Coastal Areas-
901 PM PST Wed Dec 27 2023

...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 AM THURSDAY TO 2 AM
PST MONDAY...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 8 AM THURSDAY TO
2 AM PST MONDAY...

* WHAT...For the Coastal Flood Advisory, minor coastal flooding
  expected. For the High Surf Advisory, large breaking waves of 7
  to 12 feet with highest surf in northern Orange County.

* WHERE...Orange County Coastal Areas.

* WHEN...From 8 AM Thursday to 2 AM PST Monday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Dangerous swimming and 
  surfing conditions and localized beach erosion.

* ADDITIONAL DETAILS...Locations most susceptible to flooding
  include Seal Beach, Sunset Beach, and Newport Beach.

  Here are the projected highest tides of each day for Newport 
  Beach:
  Thursday, December 28: 6.1 feet at 909 AM. 
  Friday, December 29: 5.8 feet at 944 AM. 
  Saturday, December 30: 5.4 feet at 1020 AM. 
  Sunday, December 31: 4.9 feet at 1058 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

$$

Maxwell
650 
WHUS46 KSGX 281241
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
441 AM PST Thu Dec 28 2023

CAZ043-282215-
/O.CON.KSGX.SU.W.0002.231228T1600Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.231228T1600Z-240101T1000Z/
San Diego County Coastal Areas-
441 AM PST Thu Dec 28 2023

...HIGH SURF WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 8 AM THIS
MORNING TO 2 AM PST MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking 
  waves of 8 to 12 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, minor coastal flooding is expected.

* WHERE...San Diego County Coastal Areas.

* WHEN...From 8 AM Thursday to 2 AM PST Monday. Highest surf 
  will be Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Breaking waves can sweep 
  people off jetties and docks, and into dangerous seas. Life- 
  threatening swimming conditions and significant beach erosion 
  can be expected.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Cardiff and Seaside State Beaches, portions of Del 
  Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

CAZ552-282215-
/O.CON.KSGX.CF.Y.0003.231228T1600Z-240101T1000Z/
/O.CON.KSGX.SU.Y.0011.231228T1600Z-240101T1000Z/
Orange County Coastal Areas-
441 AM PST Thu Dec 28 2023

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 8 AM THIS
MORNING TO 2 AM PST MONDAY...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
2 AM PST MONDAY...

* WHAT...For the Coastal Flood Advisory, minor coastal flooding
  expected. For the High Surf Advisory, large breaking waves of 6
  to 10 feet with sets to 12 feet in northern Orange County.

* WHERE...Orange County Coastal Areas.

* WHEN...From 8 AM Thursday to 2 AM PST Monday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Dangerous swimming and 
  surfing conditions and localized beach erosion.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Seal Beach, Sunset Beach, and Newport Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

$$

APR
334 
WHUS46 KSGX 282155
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
155 PM PST Thu Dec 28 2023

CAZ043-290600-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-
155 PM PST Thu Dec 28 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking 
  waves of 8 to 12 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, minor coastal flooding is expected.

* WHERE...San Diego County Coastal Areas.

* WHEN...Through 2 AM PST Monday. Highest surf will be through
  Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Breaking waves can sweep 
  people off jetties and docks, and into dangerous seas. Life- 
  threatening swimming conditions and significant beach erosion 
  can be expected.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Cardiff and Seaside State Beaches, portions of Del 
  Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

CAZ552-290600-
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
/O.CON.KSGX.SU.Y.0011.000000T0000Z-240101T1000Z/
Orange County Coastal Areas-
155 PM PST Thu Dec 28 2023

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...

* WHAT...For the Coastal Flood Advisory, minor coastal flooding 
  expected. For the High Surf Advisory, large breaking waves of 
  6 to 10 feet with sets to 12 feet in northern Orange County.

* WHERE...Orange County Coastal Areas.

* WHEN...Until 2 AM PST Monday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Dangerous swimming and 
  surfing conditions and localized beach erosion.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Seal Beach, Sunset Beach, and Newport Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

$$
373 
WHUS46 KSGX 290255
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
655 PM PST Thu Dec 28 2023

CAZ552-291400-
/O.UPG.KSGX.SU.Y.0011.000000T0000Z-240101T1000Z/
/O.EXA.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
Orange County Coastal Areas-
655 PM PST Thu Dec 28 2023

...HIGH SURF WARNING IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking
  waves of 6 to 12 feet with local sets to 15 feet in northern
  Orange County. For the Coastal Flood Advisory, minor coastal 
  flooding is expected.

* WHERE...Orange County Coastal Areas.

* WHEN...Until 2 AM PST Monday. Highest surf will be Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Dangerous swimming and 
  surfing conditions and localized beach erosion.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Seal Beach, Sunset Beach, and Newport Beach.

  Here are the projected highest tides of each day for Newport
  Beach:
  Friday, December 29: 5.8 feet at 944 AM. 
  Saturday, December 30: 5.4 feet at 1020 AM. 
  Sunday, December 31: 4.9 feet at 1058 AM.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

CAZ043-291400-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-
655 PM PST Thu Dec 28 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking 
  waves of 8 to 12 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, minor coastal flooding is expected.

* WHERE...San Diego County Coastal Areas.

* WHEN...Through 2 AM PST Monday. Highest surf will be Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Breaking waves can sweep 
  people off jetties and docks, and into dangerous seas. Life- 
  threatening swimming conditions and significant beach erosion 
  can be expected.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Cardiff and Seaside State Beaches, portions of Del 
  Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

  Here are the projected highest tides of each day for La Jolla:
  Thursday, December 28: 6.0 feet at 904 AM.
  Friday, December 29: 5.7 feet at 939 AM.
  Saturday, December 30: 5.3 feet at 1014 AM
  Sunday, December 31: 4.9 feet at 1051 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

Maxwell
281 
WHUS46 KSGX 291237
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
437 AM PST Fri Dec 29 2023

CAZ043-552-292215-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
437 AM PST Fri Dec 29 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking
  waves of 6 to 12 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, minor coastal flooding is expected.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM PST Monday. Highest surf will be Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Breaking waves can sweep 
  people off jetties and docks, and into dangerous seas. Life- 
  threatening swimming conditions and significant beach erosion 
  can be expected.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Cardiff and Seaside State Beaches, portions of Del 
  Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

 Here are the projected highest tides of each day for La Jolla:
  Friday, December 29: 5.7 feet at 939 AM.
  Saturday, December 30: 5.3 feet at 1014 AM
  Sunday, December 31: 4.9 feet at 1051 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

APR
381 
WHUS46 KSGX 292159
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
159 PM PST Fri Dec 29 2023

CAZ043-552-300600-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
159 PM PST Fri Dec 29 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking 
  waves of 6 to 12 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, minor coastal flooding is expected.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM PST Monday. Highest surf will be Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. Breaking waves can sweep 
  people off jetties and docks, and into dangerous seas. Life- 
  threatening swimming conditions and significant beach erosion 
  can be expected.

* ADDITIONAL DETAILS...Locations most susceptible to flooding 
  include Cardiff and Seaside State Beaches, portions of Del 
  Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$
053 
WHUS46 KSGX 292353
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
353 PM PST Fri Dec 29 2023

CAZ043-552-300800-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
353 PM PST Fri Dec 29 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM MONDAY... 
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking
  waves of 6 to 12 feet with sets to 15 feet. 
  For the Coastal Flood Advisory, minor coastal flooding.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday. 

* IMPACTS...Flooding of low-lying coastal parking lots, boardwalks
  and roads near the beach. Large breaking waves may sweep people
  off jetties and docks. Strong rip currents will pose a risk of 
  ocean drowning. Beach erosion is likely.

* ADDITIONAL DETAILS...
  Locations most susceptible to flooding in Orange County include 
  Seal Beach, Sunset Beach, and Newport Beach. 

  Locations most susceptible to flooding in San Diego County include
  Cardiff and Seaside State Beaches, portions of Del Mar,
  La Jolla Shores, Mission Beach, and Imperial Beach.

 Here are the high tides each day this weekend: 
 Saturday: 5.3 feet at 10:15 AM.  
 Sunday:   4.9 feet at 11:00 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening 
surf conditions. Stay off of jetties, piers, and other waterside 
infrastructure.

&&

$$

Moede
127 
WHUS46 KSGX 300407
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
807 PM PST Fri Dec 29 2023

CAZ043-552-301230-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
807 PM PST Fri Dec 29 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM MONDAY... 
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM MONDAY...

* WHAT...For the High Surf Warning, dangerous large breaking waves
  of 6 to 15 feet. 
  For the Coastal Flood Advisory, coastal flooding of low-lying 
  beach parking lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday.

* IMPACTS...Large breaking waves may sweep people off jetties and
  docks. Strong rip currents will pose a risk of ocean drowning.
  Flooding of low-lying beach parking lots, boardwalks and roads 
  near the beach. Beach erosion is likely.

* ADDITIONAL DETAILS... Locations most susceptible to flooding in
  Orange County include Seal Beach, Sunset Beach, and Newport
  Beach. Locations most susceptible to flooding in San Diego
  County include Cardiff and Seaside State Beaches, portions of
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider staying out of the water due to life- threatening surf 
conditions. Stay off of jetties, piers, and other waterside 
infrastructure.

&&

$$

Moede
029 
WHUS46 KSGX 301322
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
522 AM PST Sat Dec 30 2023

CAZ043-552-302215-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
522 AM PST Sat Dec 30 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerous large breaking waves
  of 6 to 11 feet with sets to 15 feet. For the Coastal Flood 
  Advisory, coastal flooding of low-lying beach parking lots and 
  boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday.

* IMPACTS...Large breaking waves may sweep people off jetties 
  and docks. Strong rip currents will pose a risk of ocean 
  drowning. Flooding of low-lying beach parking lots, boardwalks 
  and roads near the beach. Beach erosion is likely.

* ADDITIONAL DETAILS... Locations most susceptible to flooding 
  in Orange County include Seal Beach, Sunset Beach, and Newport 
  Beach. Locations most susceptible to flooding in San Diego 
  County include Cardiff and Seaside State Beaches, portions of 
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening 
surf conditions. Stay off of jetties, piers, and other waterside 
infrastructure.

&&

$$

APR
315 
WHUS46 KSGX 301631
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
831 AM PST Sat Dec 30 2023

CAZ043-552-310045-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
831 AM PST Sat Dec 30 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerous large breaking 
  waves of 6 to 11 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, coastal flooding of low-lying beach parking 
  lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday.

* IMPACTS...Large breaking waves may sweep people off jetties 
  and docks. Strong rip currents will pose a risk of ocean 
  drowning. Flooding of low-lying beach parking lots, boardwalks 
  and roads near the beach. Beach erosion is likely.

* ADDITIONAL DETAILS... Locations most susceptible to flooding in
  Orange County include Seal Beach, Sunset Beach, and Newport
  Beach. Locations most susceptible to flooding in San Diego
  County include Cardiff and Seaside State Beaches, portions of
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

  Here are the high tides for La Jolla:
  Saturday, December 30: 5.32 feet at 10:14 AM.
  Sunday, December 31: 4.86 feet at 10:51 AM.

  Here are the high tides for Newport Beach:
  Saturday, December 30: 5.22 feet at 10:12 AM. 
  Sunday, December 31: 4.76 feet at 10:49 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

Adams
174 
WHUS46 KSGX 302114
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
114 PM PST Sat Dec 30 2023

CAZ043-552-310600-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
114 PM PST Sat Dec 30 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerous large breaking 
  waves of 6 to 11 feet with sets to 15 feet. For the Coastal 
  Flood Advisory, coastal flooding of low-lying beach parking 
  lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday.

* IMPACTS...Large breaking waves may sweep people off jetties 
  and docks. Strong rip currents will pose a risk of ocean 
  drowning. Flooding of low-lying beach parking lots, boardwalks 
  and roads near the beach. Beach erosion is likely.

* ADDITIONAL DETAILS... Locations most susceptible to flooding 
  in Orange County include Seal Beach, Sunset Beach, and Newport 
  Beach. Locations most susceptible to flooding in San Diego 
  County include Cardiff and Seaside State Beaches, portions of 
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

  Here are the high tides for La Jolla:
  Sunday, December 31: 4.86 feet at 10:51 AM.

  Here are the high tides for Newport Beach:
  Sunday, December 31: 4.76 feet at 10:49 AM.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

Adams
739 
WHUS46 KSGX 310443
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
843 PM PST Sat Dec 30 2023

CAZ043-552-311245-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
843 PM PST Sat Dec 30 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM MONDAY... 
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM MONDAY...

* WHAT...For the High Surf Warning, dangerous large breaking waves
  of 6 to 11 feet with sets to 15 feet. Surf gradually decreasing
  Sunday afternoon. For the Coastal Flood Advisory, coastal 
  flooding of low-lying beach parking lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday.

* IMPACTS...Large breaking waves may sweep people off jetties and
  docks. Strong rip currents will pose a risk of ocean drowning.
  Flooding of low-lying beach parking lots, boardwalks and roads
  near the beach. Beach erosion.

* ADDITIONAL DETAILS... Locations most susceptible to flooding 
  in Orange County include Seal Beach, Sunset Beach, and Newport 
  Beach. Locations most susceptible to flooding in San Diego 
  County include Cardiff and Seaside State Beaches, portions of 
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

  High tides for La Jolla:
  Sunday, December 31: 4.86 feet at 10:51 AM.

  High tides for Newport Beach:
  Sunday, December 31: 4.76 feet at 10:49 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening 
surf conditions. Stay off of jetties, piers, and other waterside 
infrastructure.

&&

$$

Moede
725 
WHUS46 KSGX 311008
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
208 AM PST Sun Dec 31 2023

CAZ043-552-312215-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
208 AM PST Sun Dec 31 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, dangerously large breaking
  waves of 6 to 9 feet. For the Coastal Flood Advisory, minor
  coastal flooding of low-lying beach parking lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday.

* IMPACTS...Large breaking waves may sweep people off jetties 
  and docks. Strong rip currents will pose a risk of ocean 
  drowning. Flooding of low-lying beach parking lots, boardwalks 
  and roads near the beach. Beach erosion.

* ADDITIONAL DETAILS... Locations most susceptible to flooding 
  in Orange County include Seal Beach, Sunset Beach, and Newport 
  Beach. Locations most susceptible to flooding in San Diego 
  County include Cardiff and Seaside State Beaches, portions of 
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

  High tides for La Jolla:
  Sunday, December 31: 4.86 feet at 10:51 AM.

  High tides for Newport Beach:
  Sunday, December 31: 4.76 feet at 10:49 AM.
  
 Surf will slowly decrease through the day Sunday. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening 
surf conditions. Stay off of jetties, piers, and other waterside 
infrastructure.

&&

$$

CO
087 
WHUS46 KSGX 312150
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
150 PM PST Sun Dec 31 2023

CAZ043-552-010600-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
150 PM PST Sun Dec 31 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, large remnant breaking waves
  of 5 to 9 feet in Orange County and 6 to 12 feet in San DIego
  County. For the Coastal Flood Advisory, minor coastal flooding
  of low-lying beach parking lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday. Surf and coastal flooding will
  decline substantially late this afternoon and evening.

* IMPACTS...Large breaking waves may sweep people off jetties 
  and docks. Strong rip currents will pose a risk of ocean 
  drowning. Flooding of low-lying beach parking lots, boardwalks 
  and roads near the beach. Beach erosion.

* ADDITIONAL DETAILS... Locations most susceptible to flooding in
  Orange County include Seal Beach, Sunset Beach, and Newport
  Beach. Locations most susceptible to flooding in San Diego
  County include Cardiff and Seaside State Beaches, portions of
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening 
surf conditions. Stay off of jetties, piers, and other waterside 
infrastructure.

&&

$$

Maxwell
245 
WHUS46 KSGX 010500
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
900 PM PST Sun Dec 31 2023

CAZ043-552-011000-
/O.CON.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.CON.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
900 PM PST Sun Dec 31 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 2 AM PST MONDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
MONDAY...

* WHAT...For the High Surf Warning, large remnant breaking waves
  of 5 to 9 feet. For the Coastal Flood Advisory, minor coastal 
  flooding of low-lying beach parking lots and boardwalks.

* WHERE...San Diego and Orange County Coastal Areas.

* WHEN...Through 2 AM Monday. Surf and coastal flooding will 
  decline substantially late this afternoon and evening.

* IMPACTS...Large breaking waves may sweep people off jetties 
  and docks. Strong rip currents will pose a risk of ocean 
  drowning. Flooding of low-lying beach parking lots, boardwalks 
  and roads near the beach. Beach erosion.

* ADDITIONAL DETAILS... Locations most susceptible to flooding 
  in Orange County include Seal Beach, Sunset Beach, and Newport 
  Beach. Locations most susceptible to flooding in San Diego 
  County include Cardiff and Seaside State Beaches, portions of 
  Del Mar, La Jolla Shores, Mission Beach, and Imperial Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

&&

$$

Adams
817 
WHUS46 KSGX 010949
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
149 AM PST Mon Jan 1 2024

CAZ043-552-011100-
/O.EXP.KSGX.SU.W.0002.000000T0000Z-240101T1000Z/
/O.EXP.KSGX.CF.Y.0003.000000T0000Z-240101T1000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
149 AM PST Mon Jan 1 2024

...HIGH SURF WARNING WILL EXPIRE AT 2 AM PST EARLY THIS MORNING...
...COASTAL FLOOD ADVISORY WILL EXPIRE AT 2 AM PST EARLY THIS
MORNING...

Surf will continue to diminish through the morning and the threat
of coastal flooding has passed. The High Surf Warning and the
Coastal Flood Advisory will both be allowed to expire. Surf with
local sets to 6 feet and strong rip currents possible today. 

$$

CO

What forecasters said that day

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

NWS San Diego, CA wrote its last area forecast discussion before this high surf warning went out at Dec 27, 9:47 AM PST, 3 hours 54 minutes earlier.

Area forecast discussion, Dec 27, 9:47 AM PST, 3 hours 54 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
947 AM PST Wed Dec 27 2023

.SYNOPSIS...
Dry weather with variable high clouds will continue through Friday.
High temperatures will be near seasonal averages in the coastal
areas and several degrees above seasonal averages inland. Patchy
night and morning low clouds and locally dense fog will persist. A
low pressure system from the west will bring cooling and showers
late Friday night and Saturday. There is a slight chance of
showers for Sunday night and Monday and greater chances for
showers around Wednesday and Thursday of next week. High surf
will occur along the coast Thursday through early next week with
coastal flooding at favored low-lying locations.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

This morning, the sounding from NKX shows a strong surface-based
inversion with near-saturated conditions. This helps to explain
the patches of fog at the coast below the elevation of coastal
mesas. Those patches of fog have mostly mixed out by now. The high
cloud cover today may inhibit warming a little but today's high
temperatures will likely be within 2-3 degrees of seasonal
averages at lower elevations west of the mountains and 5-10
degrees above seasonal averages inland.

Through Friday, In an amplified pattern, a high pressure ridge
remains sandwiched between a large low-pressure system over the
East PAC and a large low-pressure system over the central US. This
ridge will remain in place and largely intact through Friday,
bringing dry weather with variable high clouds to SoCal. Daytime
temperatures will be a few degrees above average for lower
elevations to around 4 to 8 degrees above average for the
mountains and the Apple and Lucerne Valleys. The marine layer will
gradually deepen to around 1200 ft with patchy night and morning
low clouds and locally dense fog for coastal areas into the far
western valleys.

Friday night through Tuesday... A vigorous shortwave trough, driven
by a jet max, moving through the base of the longwave trough over
the E PAC will move inland through southern California and northern
Baja on Friday night and Saturday. This will bring showers to southwestern
California from the coast to the mountain with showers spreading southward
and eastward across the area beginning on Saturday morning. Showers
will continue into the afternoon, tapering off Saturday evening.
It's still uncertain but this shortwave is showing characteristics
that indicate the potential to produce tstms on Saturday.

The NBM indicates a 90-95 percent chance for measurable
precipitation west of the mtns in the 12hr period ending at 4 pm
on Saturday. It also shows about a 60 percent chance for one-
half inch in the San Bernardino Mountains during the 24hr
period ending Sunday afternoon. The snow level will mostly be
around 6500 feet with snowfall of a few inches possible, mostly
above 6500 to 7000 feet.

Current model solutions show the shortwave trough continuing to
move east and undercutting the high-pressure ridge as it moves
into AZ on Sunday.

A weaker system will follow the first shortwave trough and move
inland across northern Baja and possibly southern California for
Sunday night and Monday, bringing a slight chance of showers. At
this time, there is significant spread in the ensemble member
solutions but high temperatures will likely be cooler for
Saturday through Tuesday, generally around 5 degrees below average
for lower elevations to 5 to 10 degrees below average in the
mountains.

&&

.AVIATION...
271655Z...Mainly patchy low clouds 500-1000 feet MSL with vis 2-5
SM, locally lower vis/cigs on higher terrain. Clearing by 18Z for
coastal TAF sites  Confidence moderate on clearing times, otherwise,
BKN-OVC200 for all areas through tonight.

&&

.MARINE...
Two large, long period, west swells arrive Thursday and again
Saturday with the potential for combined seas of 8 to 13 feet over
the outer waters, and also over the inner waters south of Point
Loma. Steep and hazardous seas are not expected due to the very long
period that will accompany these waves.

&&

.BEACHES...
Two large, long period west swells Thursday and Saturday will
generate large surf of 8-12 feet with sets up to 15 feet in southern
San Diego County. A High Surf Advisory is in effect from 8 AM
Thursday to 2 AM Monday.

Tidal overflow on vulnerable low-lying coastal areas is possible
during the morning high tides. Beach erosion is likely.

&&

.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...High Surf Advisory from 8 AM Thursday to 2 AM PST Monday for
     Orange County Coastal Areas-San Diego County Coastal Areas.

PZ...None.

&&

PUBLIC...PG
AVIATION/MARINE/BEACHES...Small

The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 27, 11:53 AM PSTSmall Craft AdvisorySGX5 days

Nearby

High Surf Warnings in California, 2023Every high surf warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.