Alert archive / California / Tornado Warnings in 2013
Tornado Warning 2, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at Apr 4, 2013, 6:51 PM PDT for Tehama County, California. It was in force for 24 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
- Apr 4, 2013, 6:51 PM PDT (01:51 UTC)
- Expired
- Apr 4, 2013, 7:15 PM PDT
- In force
- 24 min
- Issued by
- NWS Sacramento, CA
- Area
- Storm-based polygon
County Tehama County, CA
The radar
The Beale AFB radar (KBBX), 85 km from the middle of the area, began a volume at 01:53 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
Medford/Jackson, OR (KMFR), launched 00:00Z, 1.9 hours before the alert went out and 253 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.
- Mixed-layer CAPE
- 234 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 767 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
670 WFUS56 KSTO 050151 TORSTO CAC103-050215- /O.NEW.KSTO.TO.W.0002.130405T0151Z-130405T0215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 651 PM PDT THU APR 4 2013 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * TORNADO WARNING FOR... CENTRAL TEHAMA COUNTY IN NORTHERN CALIFORNIA... * UNTIL 715 PM PDT * AT 648 PM PDT...LOCAL MEDIA REPORTED A FUNNEL CLOUD OVER CENTRAL TEHAMA COUNTY...OR NEAR RED BLUFF...MOVING NORTHEAST AT 15 MPH. * THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY SOUTH OF RED BLUFF. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 4021 12212 4012 12205 4008 12222 4012 12226 TIME...MOT...LOC 0150Z 236DEG 13KT 4011 12220 $$ DVC
2 follow-up statements
335 WWUS56 KSTO 050159 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 659 PM PDT THU APR 4 2013 CAC103-050215- /O.CON.KSTO.TO.W.0002.000000T0000Z-130405T0215Z/ TEHAMA CA- 659 PM PDT THU APR 4 2013 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR CENTRAL TEHAMA COUNTY... AT 657 PM PDT...MEDIA AND THE PUBLIC REPORTED SEVERAL FUNNEL CLOUDS. THIS ACTIVITY WAS LOCATED OVER CENTRAL TEHAMA COUNTY...OR JUST SOUTH OF RED BLUFF...MOVING NORTHEAST AT 15 MPH...AND HAS MOVED EAST OF INTERSTATE 5. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 4009 12219 4014 12221 4021 12212 4012 12205 TIME...MOT...LOC 0158Z 236DEG 13KT 4013 12217 $$ DVC
335 WWUS56 KSTO 050216 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 716 PM PDT THU APR 4 2013 CAC103-050226- /O.EXP.KSTO.TO.W.0002.000000T0000Z-130405T0215Z/ TEHAMA CA- 716 PM PDT THU APR 4 2013 ...THE TORNADO WARNING FOR CENTRAL TEHAMA COUNTY HAS EXPIRED... DOPPLER RADAR INDICATES ROTATION HAS WEAKENED WITHIN THE STORM. HOWEVER...ENOUGH ROTATION EXISTS TO MERIT CONTINUED CAUTION. CONTINUE TO MONITOR LATEST ALERTS. LAT...LON 4009 12219 4014 12221 4021 12212 4012 12205 TIME...MOT...LOC 0159Z 236DEG 13KT 4013 12217 $$ DVC
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 6:17 PM PDT | Special Weather Statement | STO | Tehama | 28 min |
| Apr 4, 6:29 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 31 min |
| Apr 4, 6:45 PM PDT | Special Weather Statement | STO | Shasta | 45 min |
| Apr 4, 8:09 PM PDT | Flash Flood Warning | STO | Shasta | 67 min |
Nearby
Tornado Warnings in California, 2013Every tornado warning in 2013Tornadoes in 2013
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.