Alert archive / California / Tornado Warnings in 2012
Tornado Warning 3, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at Oct 22, 2012, 3:42 PM PDT for Nevada County, Yuba County, California. It was in force for 48 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 22, 2012, 3:42 PM PDT (22:42 UTC)
- Expired
- Oct 22, 2012, 4:30 PM PDT
- In force
- 48 min
- Issued by
- NWS Sacramento, CA
- Area
- Storm-based polygon
Counties Nevada County, CA, Yuba County, CA
The radar
The Beale AFB radar (KBBX), 36 km from the middle of the area, began a volume at 22:45 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 22, 4:10 PM PDT | TORNADO 0 | 3 Wsw Browns Valley, CA | THE NWS STORM SURVEY HAS RATED THE 10/22/2012 BROWNS VALLEY STORM AS AN EF0 TORNADO. THIS TORNADO TOUCHED DOWN IN A RICE FIELD NEAR THE INTERSECTION OF SPRING VALLEY ROAD AND JOINES ROAD AND TRAVELED A DISTANCE OF AROUND 100 FEET TO THE NORTHEAST. WINDS WERE E |
| Oct 22, 4:15 PM PDT | TORNADO | 3 Wsw Browns Valley, CA | DEPUTY SAW TORNADO TOUCH DOWN IN RICE FIELD NEAR SPRING VALLEY ROAD AND JOINES RD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 10.7 hours before the alert went out and 182 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
- 4 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 276 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
659 WFUS56 KSTO 222242 TORSTO CAC057-115-222330- /O.NEW.KSTO.TO.W.0003.121022T2242Z-121022T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 342 PM PDT MON OCT 22 2012 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * TORNADO WARNING FOR... WEST CENTRAL NEVADA COUNTY IN CENTRAL CALIFORNIA... CENTRAL YUBA COUNTY IN CENTRAL CALIFORNIA... * UNTIL 430 PM PDT * AT 337 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTHWEST OF HAMMONTON...OR NEAR MARYSVILLE...MOVING NORTHEAST AT 20 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BEALE AFB...BROWNS VALLEY...TIMBUCTOO...SMARTVILLE...STANFIELD HILL AND LAKE WILDWOOD 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 3937 12136 3921 12116 3906 12146 3918 12160 TIME...MOT...LOC 2242Z 228DEG 18KT 3916 12148 $$ CS
3 follow-up statements
703 WWUS56 KSTO 222303 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 403 PM PDT MON OCT 22 2012 CAC057-115-222330- /O.CON.KSTO.TO.W.0003.000000T0000Z-121022T2330Z/ NEVADA CA-YUBA CA- 403 PM PDT MON OCT 22 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM PDT FOR CENTRAL YUBA AND WEST CENTRAL NEVADA COUNTIES... AT 401 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR BROWNS VALLEY...OR 12 MILES NORTHEAST OF MARYSVILLE...MOVING NORTHEAST AT 25 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PENN VALLEY...LOMA RICA...LAKE WILDWOOD AND STANFIELD HILL PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3907 12145 3927 12148 3937 12136 3921 12116 TIME...MOT...LOC 2303Z 211DEG 20KT 3926 12140 $$ CS
713 WWUS56 KSTO 222316 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 416 PM PDT MON OCT 22 2012 CAC057-115-222330- /O.CON.KSTO.TO.W.0003.000000T0000Z-121022T2330Z/ NEVADA CA-YUBA CA- 416 PM PDT MON OCT 22 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM PDT FOR CENTRAL YUBA AND WEST CENTRAL NEVADA COUNTIES... AT 412 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD. THIS TORNADO WAS LOCATED JUST EAST OF BROWNS VALLEY...OR 13 MILES NORTHEAST OF MARYSVILLE...MOVING NORTHEAST AT 15 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE WILDWOOD...LOMA RICA AND STANFIELD HILL 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 3907 12145 3927 12148 3937 12136 3921 12116 TIME...MOT...LOC 2315Z 201DEG 15KT 3924 12135 $$ CS
002 WWUS56 KSTO 222327 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 427 PM PDT MON OCT 22 2012 CAC057-115-222337- /O.EXP.KSTO.TO.W.0003.000000T0000Z-121022T2330Z/ NEVADA CA-YUBA CA- 427 PM PDT MON OCT 22 2012 ...THE TORNADO WARNING FOR CENTRAL YUBA AND WEST CENTRAL NEVADA COUNTIES WILL EXPIRE AT 430 PM PDT... LAT...LON 3907 12145 3927 12148 3937 12136 3921 12116 TIME...MOT...LOC 2327Z 201DEG 15KT 3929 12133 $$ CS
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 1:11 PM PDT | Special Weather Statement | STO | Shasta | 49 min |
| Oct 22, 1:42 PM PDT | Special Weather Statement | STO | Tehama | 48 min |
| Oct 22, 2:13 PM PDT | Special Weather Statement | STO | Yuba | 62 min |
| Oct 22, 2:37 PM PDT | Tornado Warning | STO | Butte, Yuba | 38 min |
| Oct 22, 3:14 PM PDT | Tornado Warning | STO | Sutter, Yuba | 31 min |
| Oct 22, 3:52 PM PDT | Special Weather Statement | STO | Shasta | 38 min |
| Oct 22, 4:11 PM PDT | Tornado Warning | STO | Nevada, Placer, Yuba | 49 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.