Alert archive / California / Tornado Warnings in 2011
Tornado Warning 9, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at Jun 1, 2011, 6:04 PM PDT for 4 counties in California. It was in force for 41 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
- Jun 1, 2011, 6:04 PM PDT (01:04 UTC)
- Expired
- Jun 1, 2011, 6:45 PM PDT
- In force
- 41 min
- Issued by
- NWS Sacramento, CA
- Area
- Storm-based polygon
Counties Nevada County, CA, Placer County, CA, Sutter County, CA, Yuba County, CA
The radar
The Beale AFB radar (KBBX), 46 km from the middle of the area, began a volume at 01:04 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, 1.1 hours before the alert went out and 168 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
- 5 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1087 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
383 WFUS56 KSTO 020104 TORSTO CAC057-061-101-115-020145- /O.NEW.KSTO.TO.W.0009.110602T0104Z-110602T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 604 PM PDT WED JUN 1 2011 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * TORNADO WARNING FOR... EXTREME SOUTHWESTERN NEVADA COUNTY IN CENTRAL CALIFORNIA... WEST CENTRAL PLACER COUNTY IN CENTRAL CALIFORNIA... EAST CENTRAL SUTTER COUNTY IN CENTRAL CALIFORNIA... SOUTHWESTERN YUBA COUNTY IN CENTRAL CALIFORNIA... * UNTIL 645 PM PDT * AT 600 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES NORTHWEST OF HAMMONTON...OR 10 MILES SOUTH OF PALERMO...MOVING NORTHEAST AT 15 MPH. * THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. DOPPLER RADAR INDICATES FURTHER STORM DEVELOPMENT ALONG HIGHWAY 70 FROM NEAR NICOLAUS TO EAST OF OLIVEHURST. THIS STORM IS STILL CAPABLE OF PRODUCING A TORNADO FOR THE NEXT 45 MINUTES. THE STORMS COULD APPROACH HAMMONTON...BEALE AIR FORCE BASE AND SHERIDAN IN THE NEXT 45 MINUTES. 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 3925 12134 3900 12122 3888 12163 3920 12156 TIME...MOT...LOC 0101Z 240DEG 12KT 3930 12154 $$ SG
2 follow-up statements
662 WWUS56 KSTO 020124 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 624 PM PDT WED JUN 1 2011 CAC057-061-101-115-020145- /O.CON.KSTO.TO.W.0009.000000T0000Z-110602T0145Z/ NEVADA CA-SUTTER CA-PLACER CA-YUBA CA- 624 PM PDT WED JUN 1 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR SOUTHWESTERN YUBA...WEST CENTRAL PLACER...EAST CENTRAL SUTTER AND EXTREME SOUTHWESTERN NEVADA COUNTIES... AT 624 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE STRONG STORMS CAPABLE OF PRODUCING TORNADOES ALONG HIGHWAY 70 NORTHEAST OF NICOLAUS...AND ALONG HIGHWAY 65 NEAR WHEATLAND. THE AREA WILL REMAIN UNDER A TORNADO WARNING UNTIL 645 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3925 12134 3900 12122 3888 12163 3920 12156 TIME...MOT...LOC 0122Z 240DEG 12KT 3933 12146 $$ SG
175 WWUS56 KSTO 020141 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 641 PM PDT WED JUN 1 2011 CAC057-061-101-115-020149- /O.EXP.KSTO.TO.W.0009.000000T0000Z-110602T0145Z/ NEVADA CA-SUTTER CA-PLACER CA-YUBA CA- 641 PM PDT WED JUN 1 2011 ...THE TORNADO WARNING FOR SOUTHWESTERN YUBA...WEST CENTRAL PLACER... EAST CENTRAL SUTTER AND EXTREME SOUTHWESTERN NEVADA COUNTIES WILL EXPIRE AT 645 PM PDT... A LINE OF SHOWERS AND EMBEDDED THUNDERSTORMS CONTINUE FROM NEAR NICOLAUS TO WHEATLAND. DOPPLER RADAR INDICATES THE STORMS ARE WEAKENING...SO THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE. CONTINUE TO WATCH FOR AREAS OF HEAVY RAIN AND HAIL FOR THE NEXT HALF HOUR OR SO IN THESE AREAS. LAT...LON 3925 12134 3900 12122 3888 12163 3920 12156 TIME...MOT...LOC 0139Z 240DEG 12KT 3936 12140 $$ SG
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 5:32 PM PDT | Tornado Warning | STO | Butte, Sutter, Yuba | 43 min |
| Jun 1, 5:55 PM PDT | Special Weather Statement | STO | Butte | 50 min |
| Jun 1, 6:07 PM PDT | Special Weather Statement | STO | Sacramento | 38 min |
| Jun 1, 7:02 PM PDT | Special Weather Statement | STO | Butte, Sutter, Yuba | 58 min |
Nearby
Tornado Warnings in California, 2011Every tornado warning in 2011Tornadoes in 2011
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.