Tornado Warning 1, NWS Los Angeles, CA

Issued

Aug 21, 2004, 8:53 AM PDT (15:53 UTC)

Expired

Aug 21, 2004, 9:15 AM PDT

In force

22 min

Issued by

NWS Los Angeles, CA

Area

Counties, with a storm outline in the text

County Los Angeles County, CA

The Santa Ana Mts radar (KSOX), 65 km from the middle of the area, began a volume at 15:50 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WFUS56 KLOX 211553
TORLOX
CAC037-211615-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
839 AM PDT SAT AUG 21 2004

THE NATIONAL WEATHER SERVICE IN OXNARD HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LOS ANGELES COUNTY IN SOUTHWEST CALIFORNIA

* UNTIL 915 AM PDT

* AT 825 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A LARGE AND EXTREMELY DANGEROUS TORNADO 7 MILES SOUTH OF
  GLENDALE...OR ABOUT NEAR DOWNTOWN LOS ANGELES...MOVING NORTHEAST AT
  20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  PASADENA BY 850 AM PDT
  MOUNT WILSON BY 905 AM PDT

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3413 11837 3400 11822 3425 11788 3441 11808

$$

WOFFORD

NWS Los Angeles, CA wrote its last area forecast discussion before this tornado warning went out at Aug 21, 3:00 AM PDT, 5 hours 53 minutes earlier.

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
300 AM PDT SAT AUG 21 2004

.SHORT TERM...
LOW CLOUDS HAVE PUSHED INTO ALL CSTL AND LOWER VLY ZONES
THIS MORNING...WITH THE XCPTN OF THE L.A. COUNTY VLYS...BUT
THAT SHOULD HAPPEN SOON. MARINE LAYER BETWEEN 1500 AND 2000 FEET
DEEP...JUST LIKE THE PAST FEW DAYS...AND GRADS HAVE CHANGED
LITTLE. XPCT LITTLE CHANGE IN THE CLEARING PATTERN BETWEEN
TODAY AND YESTERDAY...WITH SKIES GENERALLY CLEARING BY LATE
MORNING...AND SOME CLOUDS LINGERING NEAR THE COAST INTO THE
AFTERNOON. TEMPS SHOULD BE VERY SIMILAR TO YESTERDAY ACROSS
THE AREA...ALTHOUGH THERE COULD BE A COUPLE OF DEGREES OF COOLING
IN SOME LOCATIONS.

UPPER LOW OFF THE CENTRAL CA COAST WILL DROP SOUTH SOUTHEASTWARD
TONIGHT THROUGH SUNDAY. AS IT DOES SO...HGTS ACROSS THE AREA WILL
BEGIN FALL A BIT MORE...AND MARINE LAYER...ALREADY DEEP FOR
AUGUST...MAY DEEPEN A BIT MORE. LOW CLOUDS WILL PROBABLY PUSH INTO
THE SANTA CLARITA VLY AND APCH THE LOWEST CSTL SLOPEE. WOULD NOT BE
SURPRISED TO SEE SOME DRIZZLE ACROSS THE AREA. TEMPS ON SUNDAY
WILL PROBABLY BE DOWN A COUPLE MORE DEGREES...SIGNIFICANTLY BELOW
NORMAL FOR LATE AUGUST. THIS WILL BE ESPECIALLY TRUE IN THE VLYS...
WHERE SUCH A STRONG MARINE INFLUENCE IS NOT TYPICAL FOR AUG.
WITH UPPER LOW LINGERING SW OF THE AREA INTO MONDAY...XPCT LITTLE
CHANGE IN THE NIGHT THRU MORNING LOW CLDS/FOG SUN NIGHT/MON...AND
TEMPS SHOULD BE SIMILARLY COOL ACROSS THE AREA MON.

.LONG TERM...
THE GFS SHOWS THE UPPER LOW MOVING S AND E AND WEAKENING TUE...WITH
A BROAD TROUGH LINGERING ACRS THE AREA THRU WED. THIS MAY BRING
SOME REDUCTION IN COVERAGE AND INLAND EXTENT OF THE NIGHT THRU
MORNING LOW CLOUDS AND FOG W OF THE MTNS TUE AND WED...AND TEMPS
MAY REBOUND A FEW DEGREES. IF THE LATEST GFS IS CORRECT...
MORE SIGNIFICANT WARMING WOULD TAKE PLACE THU AND FRI AS AN
UPPER HIGH TRIED TO NOSE INTO THE AREA FROM THE PAC.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

BRUNO

Tornado Warnings in California, 2004Every tornado warning in 2004Tornadoes in 2004

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