Alert archive / California / Wind Advisories in 2016

Wind Advisory 27, NWS San Diego, CA

April 30, 2016Riverside County, San Diego County, California

NWS San Diego, CA issued this wind advisory at Apr 30, 2016, 4:55 AM PDT for Riverside County, San Diego County, California. It took effect at Apr 30, 2016, 5:00 AM PDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Apr 30, 2016, 4:55 AM PDT (11:55 UTC)
In effect from
Apr 30, 2016, 5:00 AM PDT
Expired
Apr 30, 2016, 2:00 PM PDT
In force
9 hr
Issued by
NWS San Diego, CA

Counties Riverside County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 80 km from the middle of the area, began a volume at 11:56 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 00:00Z, 11.9 hours before the alert went out and 100 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 00:00Z on 2016-04-30Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 00:00Z on 2016-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
995 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

227 
WWUS76 KSGX 301155
NPWSGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
455 AM PDT SAT APR 30 2016

...GUSTY WEST WINDS FOR THE MOUNTAINS AND DESERTS OF RIVERSIDE AND
SAN DIEGO COUNTIES THROUGH EARLY AFTERNOON...

.A LOW PRESSURE SYSTEM MOVING INTO WESTERN ARIZONA WILL MAINTAIN
STRONGER ONSHORE FLOW AND GUSTY WEST WINDS IN THE MOUNTAINS AND
DESERTS OF RIVERSIDE AND SAN DIEGO COUNTIES THIS
MORNING...DIMINISHING IN THE AFTERNOON. 

CAZ056-058-062-065-302100-
/O.CAN.KSGX.WI.Y.0026.000000T0000Z-160430T2100Z/
/O.NEW.KSGX.WI.Y.0027.160430T1200Z-160430T2100Z/
RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS-
SAN DIEGO COUNTY DESERTS-SAN GORGONIO PASS NEAR BANNING-
455 AM PDT SAT APR 30 2016

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

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

* WINDS...AREAS OF WEST WINDS 20 TO 30 MPH WITH GUSTS TO 45 MPH. 
  LOCAL GUSTS TO 50 MPH. 

* TIMING...WINDS DIMINISHING DURING THE AFTERNOON.

* LOCATION...STRONGEST WINDS NEAR MOUNTAIN RIDGE TOPS...ALONG 
  DESERT MOUNTAIN SLOPES...AND IN THE NORTHERN COACHELLA VALLEY 
  BELOW THE SAN GORGONIO PASS. 

* VISIBILITY...IN THE DESERTS REDUCED IN BLOWING SAND AND DUST 
  AT TIMES. 

* IMPACTS...THE WINDS WILL MAKE DRIVING DIFFICULT...ESPECIALLY 
  FOR MOTORISTS WITH HIGH PROFILE VEHICLES. 

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.

&&

$$

CAZ055-060-301300-
/O.CAN.KSGX.WI.Y.0026.000000T0000Z-160430T1200Z/
SAN BERNARDINO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS-
455 AM PDT SAT APR 30 2016

...WIND ADVISORY HAS EXPIRED...

WEST WINDS WILL CONTINUE TO DECREASE THIS MORNING WITH MOST GUSTS
35 MPH OR LESS.

$$

17
1 follow-up statement
499 
WWUS76 KSGX 302046
NPWSGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
146 PM PDT SAT APR 30 2016

CAZ056-058-062-065-302200-
/O.EXP.KSGX.WI.Y.0027.000000T0000Z-160430T2100Z/
RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS-
SAN DIEGO COUNTY DESERTS-SAN GORGONIO PASS NEAR BANNING-
146 PM PDT SAT APR 30 2016

...WIND ADVISORY WILL EXPIRE AT 2 PM PDT THIS AFTERNOON...

WINDS HAVE WEAKENED ACROSS THE MOUNTAINS AND DESERTS...SO THE WIND
ADVISORY WILL BE ALLOWED TO EXPIRE. HOWEVER...GUSTS OF 30 TO 40
MPH MAY STILL OCCUR AT TIMES THROUGH THIS EVENING.

$$

HARRISON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 6:35 PM PDTBeach Hazards StatementSGXOrange, San Diego50 hr

Nearby

Wind Advisories in California, 2016Every wind 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.