Alert archive / California / Tornado Warnings in 2012
Tornado Warning 7, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at Oct 22, 2012, 6:29 PM PDT for El Dorado County, Nevada County, Placer County, California. It was in force for 46 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
- Oct 22, 2012, 6:29 PM PDT (01:29 UTC)
- Expired
- Oct 22, 2012, 7:15 PM PDT
- In force
- 46 min
- Issued by
- NWS Sacramento, CA
- Area
- Storm-based polygon
Counties El Dorado County, CA, Nevada County, CA, Placer County, CA
The radar
The Beale AFB radar (KBBX), 73 km from the middle of the area, began a volume at 01:31 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
Oakland, CA (KOAK), launched 00:00Z, 1.5 hours before the alert went out and 177 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
- 123 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1132 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
830 WFUS56 KSTO 230129 TORSTO CAC017-057-061-230215- /O.NEW.KSTO.TO.W.0007.121023T0129Z-121023T0215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 629 PM PDT MON OCT 22 2012 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN EL DORADO COUNTY IN CENTRAL CALIFORNIA... SOUTHWESTERN NEVADA COUNTY IN CENTRAL CALIFORNIA... CENTRAL PLACER COUNTY IN CENTRAL CALIFORNIA... THIS INCLUDES THE CITY OF AUBURN... * UNTIL 715 PM PDT * AT 626 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR NORTH AUBURN...OR NEAR AUBURN...MOVING NORTHEAST AT 25 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COOL...LAKE OF THE PINES...APPLEGATE...ALTA SIERRA...COLFAX... WEIMAR AND FORESTHILL PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3919 12101 3895 12076 3886 12113 3897 12125 TIME...MOT...LOC 0128Z 238DEG 23KT 3892 12112 $$ CS
2 follow-up statements
777 WWUS56 KSTO 230202 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 702 PM PDT MON OCT 22 2012 CAC017-230211- /O.CAN.KSTO.TO.W.0007.000000T0000Z-121023T0215Z/ EL DORADO CA- 702 PM PDT MON OCT 22 2012 ...THE TORNADO WARNING FOR NORTHWESTERN EL DORADO COUNTY IS CANCELLED... LAT...LON 3899 12095 3907 12108 3919 12101 3904 12086 TIME...MOT...LOC 0201Z 238DEG 23KT 3909 12096 $$ CAC057-061-230215- /O.CON.KSTO.TO.W.0007.000000T0000Z-121023T0215Z/ NEVADA CA-PLACER CA- 702 PM PDT MON OCT 22 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR CENTRAL PLACER AND SOUTHWESTERN NEVADA COUNTIES... AT 658 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR COLFAX...OR 11 MILES SOUTH OF GRASS VALLEY...MOVING NORTHEAST AT 25 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WEIMAR 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 3899 12095 3907 12108 3919 12101 3904 12086 TIME...MOT...LOC 0201Z 238DEG 23KT 3909 12096 $$ CS
415 WWUS56 KSTO 230210 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 710 PM PDT MON OCT 22 2012 CAC057-061-230220- /O.EXP.KSTO.TO.W.0007.000000T0000Z-121023T0215Z/ NEVADA CA-PLACER CA- 710 PM PDT MON OCT 22 2012 ...THE TORNADO WARNING FOR CENTRAL PLACER AND SOUTHWESTERN NEVADA COUNTIES WILL EXPIRE AT 715 PM PDT... LAT...LON 3899 12095 3907 12108 3919 12101 3904 12086 TIME...MOT...LOC 0210Z 238DEG 23KT 3912 12090 $$ CS
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 5:00 PM PDT | Tornado Warning | STO | Nevada, Placer, Yuba | 45 min |
| Oct 22, 5:46 PM PDT | Tornado Warning | STO | El Dorado, Nevada, Placer | 44 min |
| Oct 23, 5:48 AM PDT | Winter Weather Advisory | STO | 35 hr |
Nearby
Tornado Warnings in California, 2012Every tornado warning in 2012Tornadoes in 2012
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.