Alert archive / California / High Wind Warnings in 2009

High Wind Warning 9, NWS San Diego, CA

November 23, 20094 counties in California

NWS San Diego, CA issued this high wind warning at Nov 23, 2009, 9:56 PM PST for 4 counties in California. It was in force for 5 hr. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Nov 23, 2009, 9:56 PM PST (05:56 UTC)
Expired
Nov 24, 2009, 3:03 AM PST
In force
5 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 05:56 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.

What was reported inside it

TimeReportWhereRemark
Nov 23, 11:23 PM PSTNON-TSTM WND DMG5 Ene Irvine, CATREE BLOWN DOWN ONTO HIGHWAY 133 JUST SOUTH OF PORTOLA PARKWAY
Nov 23, 11:30 PM PSTNON-TSTM WND GST 742 Nne Fremont Canyon, CAPEAK GUST MEASURED AT 2330 PST. GUSTS OVER 58 MPH BETWEEN 2131 PST AND 22/0130 PST.
Nov 24, 1:23 AM PSTNON-TSTM WND GST 665 Nw San Bernardino, CAPALM AVENUE ELEMENTRAY SCHOOL MEASURED A PEAK GUST OF 66.4 MPH FROM THE EASTNORTHEAST AT 0123 PST.
Nov 24, 1:31 AM PSTNON-TSTM WND GST 52Rancho Cucamonga, CAPEAK WIND FROM WEST NORTHWEST OF 52 MPH
Nov 24, 2:04 AM PSTNON-TSTM WND DMG5 Nw San Bernardino, CACAR BLOWN OFF ROAD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

San Diego, CA (KNKX), launched 00:00Z, 5.9 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 00:00Z on 2009-11-24Temperature 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 2009-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 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
3195 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
-46 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.

000 
WWUS76 KSGX 240556
NPWSGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
956 PM PST MON NOV 23 2009

CAZ048-057-241400-
/O.UPG.KSGX.WI.Y.0026.000000T0000Z-091124T2200Z/
/O.NEW.KSGX.HW.W.0009.091124T0600Z-091124T2200Z/
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SANTA ANA MOUNTAINS AND FOOTHILLS-
956 PM PST MON NOV 23 2009

...HIGH WIND WARNING IN EFFECT UNTIL 2 PM PST TUESDAY...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 2 PM PST TUESDAY. THE WIND
ADVISORY IS NO LONGER IN EFFECT. 

SURFACE HIGH PRESSURE OVER THE INTERIOR WILL CAUSE LOCAL STRONG
GUSTY NORTHEAST WINDS. THE STRONGEST WINDS WILL BE BELOW THE CAJON
PASS AND THROUGH THE SANTA ANA MOUNTAIN CANYONS WHERE GUSTS WILL
BE NEAR 70 MPH AT TIMES. THE WINDS WILL DECREASE TUESDAY
AFTERNOON.

RECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. WATCH FOR BROKEN
TREE LIMBS AND DOWNED POWER LINES.


&&

$$


ATKIN
1 follow-up statement
000 
WWUS76 KSGX 241103
NPWSGX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
303 AM PST TUE NOV 24 2009

CAZ048-057-242000-
/O.CAN.KSGX.HW.W.0009.000000T0000Z-091124T2200Z/
/O.NEW.KSGX.WI.Y.0027.091124T1103Z-091124T2000Z/
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SANTA ANA MOUNTAINS AND FOOTHILLS-
303 AM PST TUE NOV 24 2009

...WIND ADVISORY IN EFFECT UNTIL NOON PST TODAY...
...HIGH WIND WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL NOON PST TODAY. THE HIGH WIND
WARNING HAS BEEN CANCELLED. 

LOCALLY GUSTY NORTHEAST WINDS TO 50 MPH WILL OCCUR THIS MORNING
IN THE INLAND EMPIRE ALONG THE 15 AND 215 FREEWAYS BETWEEN DEVORE
AND THE 60 FREEWAY...AND ALSO IN THE PASSES AND CANYONS OF THE
SANTA ANA MOUNTAINS AND FOOTHILLS. THE GUSTY WINDS WILL DECREASE
TO BELOW 35 MPH THIS AFTERNOON.

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.

&&

$$

SCV

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 23, 9:31 PM PSTWind AdvisorySGXOrange, Riverside, San Bernardino, San Diego25 min
Nov 24, 3:03 AM PSTWind AdvisorySGXOrange, Riverside, San Bernardino, San Diego9 hr
Nov 24, 10:01 AM PSTRed Flag WarningSGXOrange, Riverside, San Diego48 hr

Nearby

High Wind Warnings in California, 2009Every high wind warning in 2009

Sources

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