Alert archive / California / High Surf Advisories in 2016

High Surf Advisory 11, NWS San Francisco Bay Area, CA

March 5, 20166 counties in California

NWS San Francisco Bay Area, CA issued this high surf advisory at Mar 5, 2016, 3:34 AM PST for 6 counties in California. It took effect at Mar 5, 2016, 10:00 PM PST. It was in force for 60 hr.

The area

The counties it named.

The facts

Issued
Mar 5, 2016, 3:34 AM PST (11:34 UTC)
In effect from
Mar 5, 2016, 10:00 PM PST
Expired
Mar 8, 2016, 10:00 AM PST
In force
60 hr
Issued by
NWS San Francisco Bay Area, CA

Counties City and County of San Francisco, CA, Marin County, CA, Monterey County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 53 km from the middle of the area, began a volume at 11:35 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

Vandenberg AFB, CA (KVBG), launched 00:00Z, 11.6 hours before the alert went out and 349 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, Vandenberg AFB, CA at 00:00Z on 2016-03-05Temperature 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, Vandenberg AFB, CA at 00:00Z on 2016-03-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.193958Sfc1 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
741 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this high surf advisory went out at Mar 4, 10:40 PM PST, 4 hours 54 minutes earlier.

Area forecast discussion, Mar 4, 10:40 PM PST, 4 hours 54 minutes before
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Hazardous weather outlook, Mar 4, 1:11 PM PST, 14 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
111 PM PST FRI MAR 4 2016

CAZ006-505>513-516>518-528>530-051400-
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS-
SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST-
EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE-
SANTA CRUZ MOUNTAINS-SANTA CLARA VALLEY...INCLUDING SAN JOSE-
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL PARK-
NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY-
NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST-
111 PM PST FRI MAR 4 2016

...HEAVY RAIN WITH GUSTY WINDS FORECAST FOR SATURDAY...
...MORE RAIN EXPECTED NEXT WEEK...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SAN FRANCISCO AND
MONTEREY BAY REGION.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SOME LIGHT RAIN TODAY IS EXPECTED TO GRADUALLY INCREASE IN
COVERAGE LATER THIS AFTERNOON AND EVENING. HOWEVER RAINFALL TODAY
IS FORECAST TO BE LIGHT WITH MINIMAL IMPACTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A SERIES OF SYSTEMS WILL MOVE THROUGH OUR REGION. RIGHT NOW THE
MAIN AREAS OF CONCERN ARE:

* WINDS: A WIND ADVISORY IS IN EFFECT FOR ALL LOCATIONS SATURDAY
  AFTERNOON AND EVENING. WINDS WILL PICK UP THROUGH THE DAY ON
  SATURDAY AS A STRONG COLD FRONT MOVES TO THE SAN FRANCISCO AND
  MONTEREY BAY REGION. MANY LOCATIONS COULD SEE GUSTS TO NEAR 40
  MPH WITH SOME HIGHER ELEVATION SPOTS EXCEEDING 50 MPH.

* RAIN: MULTIPLE ROUNDS OF RAIN ARE FORECAST WITH THE GREATEST
  AMOUNTS EXPECTED FOR SATURDAY TO SATURDAY NIGHT ALONG WITH
  SUNDAY EVENING INTO MONDAY MORNING. MINOR URBAN AND SMALL STREAM
  FLOODING WILL BE LIKELY. IN ADDITION, THE HEAVY RAIN COULD LEAD
  TO LOCAL DEBRIS FLOWS WHICH MAY CLOSE SOME ROADS. OF PARTICULAR
  CONCERN IS HIGHWAY 1 ALONG THE BIG SUR COAST FOR BOTH SYSTEMS.

ADDITION RAINFALL IS EXPECTED TO OCCUR THROUGHOUT NEXT WEEK WITH
THE GREATEST AMOUNTS SLATED FOR THE SECOND HALF OF THE WEEK.

The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 5, 7:28 AM PSTFlash Flood WatchMTRAlameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more15 hr
Mar 5, 2:48 PM PSTSmall Craft AdvisoryMTR3 days

Nearby

High Surf Advisories in California, 2016Every high surf advisory in 2016

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.