Alert archive / California / Tornado Warnings in 2008

Tornado Warning 3, NWS San Diego, CA

May 22, 2008Riverside County, California

NWS San Diego, CA issued this tornado warning at May 22, 2008, 5:16 PM PDT for Riverside County, California. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 22, 2008, 5:16 PM PDT (00:16 UTC)
Expired: May 22, 2008, 5:45 PM PDT
In force: 29 min
Issued by: NWS San Diego, CA
Area: Storm-based polygon

County Riverside County, CA

The radar

The Santa Ana Mts radar (KSOX), 22 km from the middle of the area, began a volume at 00:17 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, 0.3 hours before the alert went out and 113 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 4969 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: 2 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 
WFUS56 KSGX 230018
TORSGX
CAC065-230045-
/O.NEW.KSGX.TO.W.0003.080523T0016Z-080523T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
516 PM PDT THU MAY 22 2008

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL RIVERSIDE COUNTY IN SOUTHWEST CALIFORNIA...

* UNTIL 545 PM PDT

* AT 513 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER WEST
  CENTRAL RIVERSIDE COUNTY...OR 3 MILES SOUTHEAST OF WOODCREST...
  MOVING SOUTHWEST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL WESTERN RIVERSIDE COUNTY AT 530 PM PDT

DO NOT USE HIGHWAY OVERPASSES FOR SHELTER. OVERPASSES DO NOT PROVIDE
PROTECTION FROM TORNADIC WINDS. VEHICLES STOPPED UNDER BRIDGES BLOCK
TRAFFIC AND PREVENT PEOPLE FROM GETTING OUT OF THE STORMS PATH AND
TO SHELTER. IF YOU CANNOT DRIVE AWAY FROM THE TORNADO...GET OUT OF
YOUR VEHICLE AND LIE FLAT IN A DITCH AS A LAST RESORT.

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

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 3377 11734 3371 11745 3378 11755 3385 11759
      3390 11727 3385 11725
TIME...MOT...LOC 0016Z 067DEG 10KT 3385 11734

$$

SCV

1 follow-up statement

000 
WWUS56 KSGX 230042
SVSSGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
541 PM PDT THU MAY 22 2008

CAC065-230051-
/O.EXP.KSGX.TO.W.0003.000000T0000Z-080523T0045Z/
RIVERSIDE CA-
541 PM PDT THU MAY 22 2008

...THE TORNADO WARNING FOR WEST CENTRAL RIVERSIDE COUNTY NEAR 
WOODCREAST WILL EXPIRE AT 545 PM PDT...HOWEVER THE TORNADO WARNING 
FOR THE AREA NEAR LAKE ELSINORE REMAINS IN EFFECT UNTIL 600 PM.

LAT...LON 3377 11734 3371 11745 3378 11755 3385 11759
      3390 11727 3385 11725
TIME...MOT...LOC 0041Z 067DEG 10KT 3382 11742

$$

SCV

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 5:01 PM PDT	Flash Flood Warning	SGX	Riverside	89 min
May 22, 5:34 PM PDT	Tornado Warning	SGX	Riverside	26 min
May 22, 6:10 PM PDT	Flash Flood Warning	SGX	Orange	104 min
May 22, 6:18 PM PDT	Flash Flood Warning	SGX	Orange, Riverside, San Bernardino	87 min
May 23, 11:13 AM PDT	Areal Flood Advisory	SGX	Riverside, San Bernardino	4 hr
May 23, 11:45 AM PDT	Snow Advisory	SGX	San Bernardino	8 hr
May 23, 1:53 PM PDT	Dense Fog Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	19 hr
May 23, 3:18 PM PDT	Areal Flood Advisory	SGX	Riverside, San Bernardino	4 hr

Nearby

Tornado Warnings in California, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.