Alert archive / California / Beach Hazards Statements in 2020

Beach Hazards Statement 11, NWS San Diego, CA

December 12, 2020Orange County, San Diego County, California

NWS San Diego, CA issued this beach hazards statement at Dec 12, 2020, 12:37 PM PST for Orange County, San Diego County, California. It took effect at Dec 14, 2020, 4:00 AM PST. It was in force for 70 hr.

The area

The counties it named.

The facts

Issued
Dec 12, 2020, 12:37 PM PST (20:37 UTC)
In effect from
Dec 14, 2020, 4:00 AM PST
Expired
Dec 17, 2020, 1:43 AM PST
In force
70 hr
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 20:36 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.

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 8.6 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 2020-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 12:00Z on 2020-12-12The 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
649 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

781 
WHUS46 KSGX 122037
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
1237 PM PST Sat Dec 12 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR 
COASTAL FLOODING MONDAY AND TUESDAY...

.A long period west-northwest swell from 290 will generate
elevated surf Monday and Tuesday. The elevated surf combined with
King Tides occurring on Monday and Tuesday could cause minor 
coastal flooding and an increase risk of strong rip currents.

CAZ043-552-130615-
/O.NEW.KSGX.BH.S.0011.201214T1200Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
1237 PM PST Sat Dec 12 2020

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE SUNDAY NIGHT
THROUGH TUESDAY EVENING...

The National Weather Service in San Diego has issued a Beach
Hazards Statement...which is in effect from late Sunday night
through Tuesday evening. 

* Waves and Surf...Long period west-northwest swell from 290 
  degrees will generate elevated surf 4 to 6 feet in San Diego 
  County and 3 to 5 feet in Orange County.
  

* Timing...Surf will start to build Sunday, peak Monday and
  Tuesday, and begin to diminish late Tuesday night. King Tides 
  will peak on Monday at 6.9 feet, high tide on Tuesday will be 
  6.8 feet.

* Impacts...Tidal overflow resulting in minor coastal flooding
  which could impact beach parking lots and high risk of strong
  rip currents. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.  Obey posted warning
signs and flags and talk to a lifeguard before swimming.  Use
caution when in or near the water and always swim near a
lifeguard.

&&

$$

CO

https://www.weather.gov/sandiego
13 follow-up statements
144 
WHUS46 KSGX 130301
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
701 PM PST Sat Dec 12 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING MONDAY AND TUESDAY...

.A long period west-northwest swell from 290 degrees will 
generate above average surf of 3 to 6 feet Monday and Tuesday. The
surf combined with King Tides could cause minor coastal
flooding. Strong rip currents are likely through Tuesday evening. 

CAZ043-552-131330-
/O.CON.KSGX.BH.S.0011.201214T1200Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
701 PM PST Sat Dec 12 2020

...BEACH HAZARDS STATEMENT FOR MINOR COASTAL FLOODING REMAINS IN 
EFFECT MONDAY AND TUESDAY...

* Waves and Surf...Elevated surf of 4 to 6 feet in San Diego
  County and 3 to 5 feet in Orange County.

* Timing...Surf will start to build Sunday, peak Monday and
  Tuesday, and begin to diminish Tuesday night. High tides on
  Monday will be 6.9 feet at 8 AM, and the high tide on Tuesday
  will be 6.8 feet at 840 AM.

* Impacts...Water run-up into some beach parking lots and other
  low-lying coastal locations. Beaches that are most prone to
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$

Moede
736 
WHUS46 KSGX 131156
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
356 AM PST Sun Dec 13 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR 
COASTAL FLOODING MONDAY AND TUESDAY...

.A long period west-northwest swell from 290 degrees will
generate surf of 3 to 6 feet Monday and Tuesday. The surf 
combined with King Tides could cause minor coastal flooding in the
mornings. Strong rip currents are likely through Tuesday evening.

CAZ043-552-132200-
/O.CON.KSGX.BH.S.0011.201214T1200Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
356 AM PST Sun Dec 13 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY EVENING...

* Waves and Surf...Elevated surf of 4 to 6 feet in San Diego 
  County and 3 to 5 feet in Orange County. 

* Timing...Surf will start to build late today, peak Monday and 
  Tuesday, and begin to diminish Tuesday night. High tides on 
  Monday will be 6.9 feet at 8 AM, and the high tide on Tuesday 
  will be 6.8 feet at 840 AM. 

* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$


https://www.weather.gov/sandiego
998 
WHUS46 KSGX 132025
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
1225 PM PST Sun Dec 13 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING MONDAY AND TUESDAY...

.A long period west-northwest swell from 290 degrees will
generate surf of 3 to 6 feet Monday and Tuesday. The surf
combined with King Tides could cause minor coastal flooding in
the mornings. Strong rip currents are likely through Tuesday
evening.

CAZ043-552-140615-
/O.CON.KSGX.BH.S.0011.201214T1200Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
1225 PM PST Sun Dec 13 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY EVENING...

* Waves and Surf...Elevated surf of 4 to 6 feet in San Diego 
  County and 3 to 5 feet in Orange County. 

* Timing...Surf will start to build late today, peak Monday and 
  Tuesday, and begin to diminish Tuesday night. High tides on 
  Monday will be 6.9 feet at 8 AM, and the high tide on Tuesday 
  will be 6.8 feet at 840 AM. 

* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$

CO

https://www.weather.gov/sandiego
547 
WHUS46 KSGX 140539
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
939 PM PST Sun Dec 13 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING MONDAY AND TUESDAY...

.A long period west-northwest swell from 290 degrees will
generate surf of 3 to 6 feet Monday and Tuesday. The surf
combined with King Tides could cause minor coastal flooding in
the mornings. Strong rip currents are likely through Tuesday
evening.

CAZ043-552-141400-
/O.CON.KSGX.BH.S.0011.201214T1200Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
939 PM PST Sun Dec 13 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 4 AM PST MONDAY
THROUGH TUESDAY EVENING...

* Waves and Surf...Elevated surf of 4 to 6 feet in San Diego 
  County and 3 to 5 feet in Orange County. 

* Timing...Surf building overnight and into Monday morning,
  peaking Monday and Tuesday, and diminishing Tuesday night. High
  tide on Monday will be 6.9 feet at 8 AM, and the high tide on 
  Tuesday will be 6.8 feet at 840 AM. 

* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$

Rodriguez

https://www.weather.gov/sandiego
726 
WHUS46 KSGX 140957
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
157 AM PST Mon Dec 14 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING TODAY AND TUESDAY...

.A long-period west-northwest swell will generate surf of 3 to 6 
feet today and Tuesday. The surf combined with king tides could 
cause minor coastal flooding in the mornings. Strong rip currents 
are likely through Tuesday evening.

CAZ043-552-142200-
/O.CON.KSGX.BH.S.0011.201214T1200Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
157 AM PST Mon Dec 14 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY
EVENING...

* Waves and Surf...4 to 6 feet in San Diego County and 3 to 5 
  feet in Orange County. 

* Timing...Today through Tuesday. 

* Tides...High tide 6.9 feet at 800 AM this morning, 6.8 feet at 
  840 AM Tuesday.

* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$
592 
WHUS46 KSGX 142120
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
120 PM PST Mon Dec 14 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING TODAY AND TUESDAY...

.A long-period west-northwest swell will generate surf of 3 to
6 feet today and Tuesday. The surf, combined with king tides, 
could cause minor coastal flooding into the morning hours. Strong
rip currents are likely through Tuesday evening.

CAZ043-552-150600-
/O.CON.KSGX.BH.S.0011.000000T0000Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
120 PM PST Mon Dec 14 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY
EVENING...

* Waves and Surf...4 to 6 feet in San Diego County and 3 to 5 
  feet in Orange County. 

* Timing...Today through Tuesday.

* Tides...High tide 6.8 feet at 845 AM Tuesday.
 
* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$

APR

https://www.weather.gov/sandiego
105 
WHUS46 KSGX 150501
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
901 PM PST Mon Dec 14 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING THROUGH TUESDAY...

.A long-period west-northwest swell will generate surf of 3 to
6 feet through Tuesday. The surf, combined with king tides, could
cause minor coastal flooding, especially Tuesday morning. Strong 
rip currents are likely through Tuesday evening.

CAZ043-552-151415-
/O.CON.KSGX.BH.S.0011.000000T0000Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
901 PM PST Mon Dec 14 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY
EVENING...

* Waves and Surf...4 to 6 feet in San Diego County and 3 to 5 
  feet in Orange County. 

* Timing...Through 9 PM Tuesday.

* Tides...High tide 6.8 feet at 845 AM Tuesday.

* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$

CO

https://www.weather.gov/sandiego
847 
WHUS46 KSGX 150944
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
144 AM PST Tue Dec 15 2020

...ELEVATED SURF COMBINED WITH KING TIDES COULD CAUSE MINOR
COASTAL FLOODING TODAY...

.A long-period west-northwest swell will generate surf of 3 to
6 feet today. The surf, combined with king tides, could cause 
minor coastal flooding, especially this morning. Strong rip 
currents are also likely today.

CAZ043-552-152215-
/O.CON.KSGX.BH.S.0011.000000T0000Z-201216T0500Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
144 AM PST Tue Dec 15 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...

* Waves and Surf...3 to 5 feet. Sets to 6 feet in San Diego
  County. 

* Timing...Through 9 PM today.

* Tides...High tide 6.8 feet at 845 AM today.

* Impacts...Water run-up into some beach parking lots and other 
  low-lying coastal locations. Beaches that are most prone to 
  flooding include Sunset, Seal, Newport, Oceanside, Cardiff, La 
  Jolla Shores and Imperial Beach. The elevated surf will create 
  strong rip currents and dangerous swimming conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.

&&

$$
058 
WHUS46 KSGX 152137
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
137 PM PST Tue Dec 15 2020

...ELEVATED SURF WILL CONTINUE THE NEXT FEW DAYS WITH HIGHEST SURF
OVER THE SAN DIEGO COUNTY BEACHES...

.A long-period west-northwest swell will generate surf of 3 to
5 feet with sets to 6 feet through Wednesday. Surf will build 
further on Thursday to 3 to 6 feet with sets to 8 feet. Strong 
rip currents are also likely. The impact of the king tides is 
subsiding with astronomical high tides not as high the next few 
days. 

CAZ043-552-161200-
/O.EXT.KSGX.BH.S.0011.000000T0000Z-201218T1200Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
137 PM PST Tue Dec 15 2020

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH LATE THURSDAY
NIGHT...

* Waves and Surf...3 to 5 feet with sets to 6 feet over San Diego
  County through Wednesday. Surf will build further to 4 to 6 feet
  with sets to 8 feet on Thursday and Thursday night.

* Timing...Through Thursday night, with highest surf Thursday and
  Thursday night.

* Tides...High tide 6.8 feet at 845 AM today.

* Impacts...The elevated surf will create strong rip currents and
  dangerous swimming conditions. 

* Outlook...Elevated surf will continue through Saturday mainly
  for the San Diego County beaches. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...or minor tidal overflow 
are possible at local beaches.

&&

$$


https://www.weather.gov/sandiego
900 
WHUS46 KSGX 161003
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
203 AM PST Wed Dec 16 2020

CAZ043-552-162200-
/O.EXT.KSGX.BH.S.0011.000000T0000Z-201217T1700Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
203 AM PST Wed Dec 16 2020

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH THURSDAY
MORNING...

* Waves and Surf...3 to 5 feet with sets to 6 feet. 

* Timing...Today into Thursday morning. 

* Impacts...Elevated surf will create a high rip current risk and
  locally dangerous swimming conditions. 

* Outlook...Swell and surf will gradually diminish this weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...or minor tidal overflow
are possible at local beaches.

&&

$$
505 
WHUS46 KSGX 162147
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
147 PM PST Wed Dec 16 2020

CAZ043-552-170600-
/O.CON.KSGX.BH.S.0011.000000T0000Z-201217T1700Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
147 PM PST Wed Dec 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
MORNING...

* Waves and Surf...3 to 5 feet with sets to 6 feet.

* Timing...Through Thursday morning.

* Impacts...Elevated surf will create a high rip current risk 
  and locally dangerous swimming conditions. 

* Outlook...Swell and surf will gradually diminish late Thursday
  through Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...or minor tidal overflow
are possible at local beaches.

&&

$$

Maxwell
408 
WHUS46 KSGX 170514
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
914 PM PST Wed Dec 16 2020

CAZ043-552-171400-
/O.CON.KSGX.BH.S.0011.000000T0000Z-201217T1700Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
914 PM PST Wed Dec 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 9 AM PST
THURSDAY...

* Waves and Surf...3 to 5 feet with sets to 6 feet.

* Timing...Through Thursday morning.

* Impacts...Elevated surf will create a high rip current risk 
  and locally dangerous swimming conditions. 

* Outlook...Swell and surf will diminish late Thursday through 
  Friday. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...or minor tidal overflow
are possible at local beaches.

&&

$$


https://www.weather.gov/sandiego
871 
WHUS46 KSGX 170943
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
143 AM PST Thu Dec 17 2020

CAZ043-552-171045-
/O.CAN.KSGX.BH.S.0011.000000T0000Z-201217T1700Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
143 AM PST Thu Dec 17 2020

...BEACH HAZARDS STATEMENT IS CANCELLED...

The National Weather Service in San Diego has cancelled the Beach
Hazards Statement. 

Beach hazards are not expected this morning.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 12, 1:27 AM PSTWind AdvisorySGXRiverside, San Bernardino, San Diego15 hr

Nearby

Beach Hazards Statements in California, 2020Every beach hazards statement in 2020

Sources

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