Alert archive / California / Beach Hazards Statements in 2017

Beach Hazards Statement 3, NWS San Diego, CA

January 20, 2017Orange County, San Diego County, California

NWS San Diego, CA issued this beach hazards statement at Jan 20, 2017, 7:56 AM PST for Orange County, San Diego County, California. It took effect at Jan 20, 2017, 11:00 AM PST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jan 20, 2017, 7:56 AM PST (15:56 UTC)
In effect from
Jan 20, 2017, 11:00 AM PST
Expired
Jan 20, 2017, 8:00 PM PST
In force
9 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 16:00 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, 3.9 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 2017-01-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 41 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 2017-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.1939587897117136156Sfc1 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
41 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
618 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

759 
WHUS46 KSGX 201556
CFWSGX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
756 AM PST FRI JAN 20 2017

...HIGH SURF WARNING FOR SAN DIEGO AND ORANGE COUNTY BEACHES
THROUGH TUESDAY...

...LIGHTNING THREAT AT THE BEACHES TODAY...

.LARGE AND POTENTIALLY DAMAGING SURF WILL BATTER THE BEACHES
THROUGH SATURDAY. COASTAL FLOODING AND BEACH EROSION ARE POSSIBLE
DURING THIS TIME. THE SURF WILL LOWER SLIGHTLY ON SUNDAY...THEN
LOWER BY THE MIDDLE OF NEXT WEEK.

ALSO...A STRONG STORM SYSTEM WILL LIKELY BRING SCATTERED 
THUNDERSTORMS TO THE BEACHES LATE THIS MORNING THROUGH THE EARLY
EVENING HOURS...WHICH WILL BE A DANGER TO BEACH GOERS AND
SWIMMERS.

CAZ043-552-210000-
/O.NEW.KSGX.BH.S.0003.170120T1900Z-170121T0400Z/
/O.CON.KSGX.SU.W.0001.000000T0000Z-170125T0600Z/
SAN DIEGO COUNTY COASTAL AREAS-ORANGE COUNTY COASTAL AREAS-
756 AM PST FRI JAN 20 2017

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY...
...BEACH HAZARDS STATEMENT IN EFFECT FROM 11 AM PST THIS MORNING
THROUGH THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR POTENTIAL LIGHTING AT THE BEACHES...WHICH
IS IN EFFECT FROM 11 AM PST THIS MORNING THROUGH THIS EVENING.

* CHANGES SINCE LAST ISSUANCE...BEACH HAZARDS STATEMENT ISSUED FOR
  A LIGHTHING THREAT AT THE BEACHES.

* SURF...SURF INCREASING TO 8 TO 12 FT WITH SETS TO 16 FEET
  TONIGHT THROUGH SATURDAY. SURF SUBSIDING SUNDAY THROUGH TUESDAY
  TO 6 TO 9 FT WITH SETS TO 12 FT. SURF WILL LIKELY DIMINISH
  BELOW HIGH SURF THRESHOLDS BY WEDNESDAY.

* TIMING FOR BEACH LIGHTNING...LATE MORNING THROUGH EARLY EVENING.

* TIDES...HIGHEST TIDE WILL BE 4.6 FT AT 435 AM SATURDAY...4.8 FT
  AT 520 AM SUNDAY...5.1 FT AT 559 AM MONDAY...AND 5.4 FT AT 634
  AM TUESDAY.

* IMPACTS...COASTAL FLOODING AND BEACH EROSION. DAMAGE TO COASTAL
  STRUCTURES SUCH AS PIERS. STRONG RIP CURRENTS AND DANGEROUS
  SWIMMING CONDITIONS. LARGE WAVES CAN WASH PEOPLE OFF JETTIES AND
  ROCKS. DEADLY CLOUD-TO-WATER AND CLOUD-TO-GROUND LIGHTNING
  POSSIBLE RESULTING IN A THREAT TO BEACH GOERS AND SWIMMERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF WARNING INDICATES THAT DANGEROUS...BATTERING WAVE
WILL POUND THE SHORELINE. THIS WILL RESULT IN VERY DANGEROUS
SWIMMING CONDITIONS...AND DEADLY RIP CURRENTS.

A BEACH HAZARDS STATEMENT FOR BEACH LIGHTNING MEANS THAT THERE IS
THE POTENTIAL FOR CLOUD TO GROUND OR CLOUD TO WATER LIGHTNING
STRIKES WHICH COULD RESULT IN INJURY OR DEATH. MOVE INDOORS UNTIL
THE STORM PASSES AND STAY AWAY FROM METAL OBJECTS.

&&

$$

HTTP://WWW.WEATHER.GOV/SANDIEGO
1 follow-up statement
420 
WHUS46 KSGX 210120
CFWSGX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
520 PM PST FRI JAN 20 2017

...HIGH SURF WARNING FOR SAN DIEGO AND ORANGE COUNTY BEACHES
THROUGH TUESDAY...

...LIGHTNING THREAT AT THE BEACHES THROUGH 8 PM...

.LARGE AND POTENTIALLY DAMAGING SURF WILL BATTER THE BEACHES
THROUGH SATURDAY. COASTAL FLOODING AND BEACH EROSION ARE POSSIBLE
DURING THIS TIME. THE SURF WILL LOWER BY THE MIDDLE OF NEXT WEEK.

ISOLATED THUNDERSTORMS ARE POSSIBLE AT THE BEACHES THROUGH EARLY
EVENING. 

CAZ043-552-210800-
/O.CON.KSGX.SU.W.0001.000000T0000Z-170125T0600Z/
/O.CON.KSGX.BH.S.0003.000000T0000Z-170121T0400Z/
SAN DIEGO COUNTY COASTAL AREAS-ORANGE COUNTY COASTAL AREAS-
520 PM PST FRI JAN 20 2017

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY...
...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 8 PM PST THIS
EVENING...

* SURF...SURF INCREASING TO 8 TO 12 FT WITH SETS TO 16 FEET 
  TONIGHT THROUGH SATURDAY. SURF SUBSIDING SUNDAY THROUGH 
  TUESDAY TO 6 TO 9 FT WITH SETS TO 12 FT. SURF WILL LIKELY 
  DIMINISH BELOW HIGH SURF THRESHOLDS BY WEDNESDAY. 

* TIMING FOR BEACH LIGHTNING...THROUGH EARLY EVENING.

* TIDES...HIGHEST TIDE WILL BE 4.6 FT AT 435 AM SATURDAY...4.8 
  FT AT 520 AM SUNDAY...5.1 FT AT 559 AM MONDAY...AND 5.4 FT AT 
  634 AM TUESDAY. 

* IMPACTS...COASTAL FLOODING AND BEACH EROSION. DAMAGE TO COASTAL
  STRUCTURES SUCH AS PIERS. STRONG RIP CURRENTS AND DANGEROUS
  SWIMMING CONDITIONS. LARGE WAVES CAN WASH PEOPLE OFF JETTIES AND
  ROCKS. CLOUD-TO-WATER AND CLOUD-TO-GROUND LIGHTNING POSSIBLE.

* REPORTS...8 FOOT WAVES WERE REPORTED AT HUNTINGTON BEACH...SAN
  CLEMENTE PIER AND SOLANA BEACH AT 4 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF WARNING INDICATES THAT DANGEROUS...BATTERING WAVE
WILL POUND THE SHORELINE. THIS WILL RESULT IN VERY DANGEROUS
SWIMMING CONDITIONS...AND DEADLY RIP CURRENTS.

A BEACH HAZARDS STATEMENT FOR BEACH LIGHTNING MEANS THAT THERE IS
THE POTENTIAL FOR CLOUD TO GROUND OR CLOUD TO WATER LIGHTNING
STRIKES WHICH COULD RESULT IN INJURY OR DEATH. MOVE INDOORS UNTIL
THE STORM PASSES AND STAY AWAY FROM METAL OBJECTS.

&&

$$

MOEDE
HTTP://WWW.WEATHER.GOV/SANDIEGO

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 20, 10:41 AM PSTAreal Flood AdvisorySGXOrange, Riverside, San Diego9 hr
Jan 20, 11:46 AM PSTAreal Flood AdvisorySGXSan Bernardino8 hr
Jan 20, 12:38 PM PSTSevere Thunderstorm WarningSGXOrange22 min
Jan 20, 12:46 PM PSTAreal Flood AdvisorySGXSan Diego8 hr
Jan 20, 12:52 PM PSTSevere Thunderstorm WarningSGXOrange23 min
Jan 20, 1:20 PM PSTAreal Flood AdvisorySGXOrange, Riverside, San Bernardino6 hr
Jan 20, 1:33 PM PSTFlash Flood WarningSGXSan Bernardino5 hr
Jan 20, 1:51 PM PSTSevere Thunderstorm WarningSGXSan Diego54 min
Jan 20, 2:03 PM PSTAreal Flood AdvisorySGXRiverside, San Bernardino5 hr
Jan 20, 2:25 PM PSTSevere Thunderstorm WarningSGXSan Diego50 min
Jan 20, 2:38 PM PSTFlash Flood WarningSGXSan Diego3 hr
Jan 20, 2:59 PM PSTFlash Flood WarningSGXSan Diego6 hr

Nearby

Beach Hazards Statements in California, 2017Every beach hazards statement in 2017

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.