Alert archive / California / Wind Advisories in 2012

Wind Advisory 21, NWS San Diego, CA

March 7, 20124 counties in California

NWS San Diego, CA issued this wind advisory at Mar 7, 2012, 5:55 AM PST for 4 counties in California. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Mar 7, 2012, 5:55 AM PST (13:55 UTC)
Expired
Mar 7, 2012, 1:18 PM PST
In force
7 hr
Issued by
NWS San Diego, CA

Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA

The radar

The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 13:55 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, 1.9 hours before the alert went out and 124 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 2012-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 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 2012-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.1939587897Sfc1 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
36 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
738 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
-36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

235 
WWUS76 KSGX 071355
NPWSGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
555 AM PST WED MAR 7 2012

...STRONG GUSTY NORTH TO NORTHEAST WINDS THROUGH EARLY AFTERNOON...

.UPPER LEVEL LOW PRESSURE OVER SOUTHERN NEVADA WILL BEING GUSTY
NORTH TO NORTHEAST WINDS THROUGH EARLY AFTERNOON THROUGH AND BELOW
PASSES AND CANYONS AND NEAR COASTAL FOOTHILLS.

CAZ042-048-055-057-072200-
/O.NEW.KSGX.WI.Y.0021.120307T1355Z-120307T2200Z/
ORANGE COUNTY COASTAL AREAS-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SAN BERNARDINO COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS-
555 AM PST WED MAR 7 2012

...WIND ADVISORY IN EFFECT UNTIL 2 PM PST THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 2 PM PST THIS AFTERNOON. 

* TIMING: WINDS DEVELOPING AFTER SUNRISE AND CONTINUING THROUGH
  EARLY AFTERNOON.

* WINDS: AREAS OF NORTH TO NORTHEAST WINDS 20 TO 30 MPH WITH GUSTS
  TO 50 MPH. ISOLATED GUSTS TO 60 MPH ARE POSSIBLE.

* IMPACTS: THE WINDS WILL MAKE DRIVING DIFFICULT...ESPECIALLY FOR
  MOTORISTS WITH HIGH PROFILE VEHICLES. WATCH FOR BROKEN TREE
  LIMBS AND DOWNED POWER LINES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

CURRENT WIND GUST REPORTS ON THE WEB:
HTTP://WWW.WRH.NOAA.GOV/SGX/GMAP/INDEX.PHP

MAX DAILY WIND GUST REPORTS ON THE WEB:
HTTP://WWW.WRH.NOAA.GOV/SGX/KML/WIND.PHP?WFO=SGX

MARTIN
1 follow-up statement
690 
WWUS76 KSGX 072118
NPWSGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
118 PM PST WED MAR 7 2012


CAZ042-048-055-057-072230-
/O.CAN.KSGX.WI.Y.0021.000000T0000Z-120307T2200Z/
ORANGE COUNTY COASTAL AREAS-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SAN BERNARDINO COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS-
118 PM PST WED MAR 7 2012

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS CANCELLED THE WIND
ADVISORY. 

WINDS ARE DECREASING OVER THE AREA THIS AFTERNOON AND ARE EXPECTED
TO REMAIN BELOW ADVISORY CRITERIA FOR THE REMAINDER OF THE DAY.

NORTHEAST WINDS ARE LIKELY TO INCREASE AGAIN LATER TONIGHT THROUGH
AND BELOW WIND PRONE PASSES AND CANYONS...AND CONTINUE THROUGH THURSDAY
MORNING. A WIND ADVISORY MAY NEED TO BE REISSUED IN SOME AREAS AS
THESE WINDS INCREASE.

$$

JAD

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 7:54 PM PSTSmall Craft Advisory for Hazardous SeasSGX6 hr

Nearby

Wind Advisories in California, 2012Every wind advisory in 2012

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.