Alert archive / California / Tornado Warnings in 2012
Tornado Warning 1, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at Oct 22, 2012, 2:37 PM PDT for Butte County, Yuba County, California. It was in force for 38 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, 2:37 PM PDT (21:37 UTC)
- Expired
- Oct 22, 2012, 3:15 PM PDT
- In force
- 38 min
- Issued by
- NWS Sacramento, CA
- Area
- Storm-based polygon
Counties Butte County, CA, Yuba County, CA
The radar
The Beale AFB radar (KBBX), 24 km from the middle of the area, began a volume at 21:37 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 12:00Z, 9.6 hours before the alert went out and 199 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.
570 WFUS56 KSTO 222137 TORSTO CAC007-115-222215- /O.NEW.KSTO.TO.W.0001.121022T2137Z-121022T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 237 PM PDT MON OCT 22 2012 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * TORNADO WARNING FOR... NORTHERN YUBA COUNTY IN CENTRAL CALIFORNIA... SOUTH CENTRAL BUTTE COUNTY IN NORTHERN CALIFORNIA... * UNTIL 315 PM PDT * AT 233 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR IOWA CITY...OR 9 MILES SOUTH OF PALERMO...MOVING NORTHEAST AT 15 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BANGOR...STANFIELD HILL...OREGON HOUSE...FRENCHTOWN...DOBBINS... CHALLENGE AND BROWNSVILLE 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 3953 12130 3935 12117 3923 12151 3938 12164 TIME...MOT...LOC 2137Z 240DEG 15KT 3932 12149 $$ CS
3 follow-up statements
562 WWUS56 KSTO 222151 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 251 PM PDT MON OCT 22 2012 CAC007-115-222215- /O.CON.KSTO.TO.W.0001.000000T0000Z-121022T2215Z/ YUBA CA-BUTTE CA- 251 PM PDT MON OCT 22 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM PDT FOR SOUTH CENTRAL BUTTE AND NORTHERN YUBA COUNTIES... AT 246 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR LOMA RICA...OR 9 MILES SOUTHEAST OF PALERMO...MOVING NORTHEAST AT 15 MPH. IN ADDITION THIS STORM WILL LIKELY PRODUCE LARGE HAIL. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BANGOR...STANFIELD HILL...OREGON HOUSE...FRENCHTOWN...DOBBINS... CHALLENGE AND BROWNSVILLE PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS. && LAT...LON 3925 12146 3942 12154 3953 12130 3935 12117 TIME...MOT...LOC 2149Z 240DEG 15KT 3934 12143 $$ CS
383 WWUS56 KSTO 222204 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 304 PM PDT MON OCT 22 2012 CAC007-115-222215- /O.CON.KSTO.TO.W.0001.000000T0000Z-121022T2215Z/ YUBA CA-BUTTE CA- 304 PM PDT MON OCT 22 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM PDT FOR SOUTHEASTERN BUTTE AND CENTRAL YUBA COUNTIES... AT 303 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR STANFIELD HILL...OR 10 MILES SOUTHEAST OF PALERMO...MOVING NORTHEAST AT 15 MPH. LOCAL MEDIA HAS REPORTED A FUNNEL CLOUD WITH THIS STORM. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OREGON HOUSE...FRENCHTOWN...DOBBINS...CHALLENGE AND BROWNSVILLE 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 3928 12140 3943 12149 3953 12130 3935 12117 TIME...MOT...LOC 2204Z 240DEG 15KT 3937 12136 $$ CS
986 WWUS56 KSTO 222214 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 314 PM PDT MON OCT 22 2012 CAC007-115-222222- /O.EXP.KSTO.TO.W.0001.000000T0000Z-121022T2215Z/ YUBA CA-BUTTE CA- 314 PM PDT MON OCT 22 2012 ...THE TORNADO WARNING FOR SOUTHEASTERN BUTTE AND CENTRAL YUBA COUNTIES WILL EXPIRE AT 315 PM PDT... THE ROTATION ASSOCIATED WITH THIS STORM HAS WEAKENED. LAT...LON 3928 12140 3943 12149 3953 12130 3935 12117 TIME...MOT...LOC 2212Z 240DEG 15KT 3937 12131 $$ 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, 3:14 PM PDT | Tornado Warning | STO | Sutter, Yuba | 31 min |
| Oct 22, 3:42 PM PDT | Tornado Warning | STO | Nevada, Yuba | 48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.