Alert archive / California / Tornado Warnings in 2011
Tornado Warning 5, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at May 25, 2011, 6:10 PM PDT for Butte County, Glenn County, California. It was in force for 35 min. 3 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
- May 25, 2011, 6:10 PM PDT (01:10 UTC)
- Expired
- May 25, 2011, 6:45 PM PDT
- In force
- 35 min
- Issued by
- NWS Sacramento, CA
- Area
- Storm-based polygon
Counties Butte County, CA, Glenn County, CA
The radar
The Beale AFB radar (KBBX), 24 km from the middle of the area, began a volume at 01:11 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 |
|---|---|---|---|
| May 25, 6:20 PM PDT | TORNADO | 8 Ssw Chico, CA | TORNADO ON THE GROUND FILMED LIVE BY MEDIA HELICOPTERS NEAR DURHAM. |
| May 25, 6:35 PM PDT | FUNNEL CLOUD | 2 E Chico, CA | |
| May 25, 6:40 PM PDT | TORNADO | 9 Nw Oroville, CA | TREES DOWN ON TAYLOR AVE. JUST SOUTH OF THE TOWN OF DURHAM. |
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 00:00Z, 1.2 hours before the alert went out and 222 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1378 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
510 WFUS56 KSTO 260110 TORSTO CAC007-021-260145- /O.NEW.KSTO.TO.W.0005.110526T0110Z-110526T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 610 PM PDT WED MAY 25 2011 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * TORNADO WARNING FOR... CENTRAL BUTTE COUNTY IN NORTHERN CALIFORNIA... THIS INCLUDES THE CITIES OF...PARADISE...CHICO... EXTREME EAST CENTRAL GLENN COUNTY IN NORTHERN CALIFORNIA... * UNTIL 645 PM PDT * AT 602 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A TORNADO AROUND 5 MILES SOUTHWEST OF CHICO...MOVING EAST AT 15 MPH. A SECOND TORNADO IS AROUND 5 MILES SOUTHEAST OF ORDBEND...ALSO MOVING EAST AT 15 MPH. * THE TORNADO WILL BE NEAR... SOUTH CHICO 615 PM PDT... PARADISE BY 645 PM PDT... * THESE TWO STORMS HAVE A HISTORY OF BRIEFLY DISSIPATING AND REFORMING TORNADOES. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. 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 3982 12160 3957 12154 3953 12195 3974 12199 TIME...MOT...LOC 0106Z 259DEG 11KT 3970 12178 $$ DANG/RB
1 follow-up statement
686 WWUS56 KSTO 260135 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 635 PM PDT WED MAY 25 2011 CAC007-021-260145- /O.CON.KSTO.TO.W.0005.000000T0000Z-110526T0145Z/ GLENN CA-BUTTE CA- 635 PM PDT WED MAY 25 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR CENTRAL BUTTE AND EXTREME EAST CENTRAL GLENN COUNTIES... AT 628 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THE POSSIBILITY TWO TORNADOES. THE FIRST TORNADO IS 3 MILES SOUTH OF CHICO. THE SECOND TORNADO IS NEAR DURHAM. BOTH OF THESE STORMS ARE MOVING TO THE EAST AT AROUND 10 MPH. THESE STORMS HAVE A HISTORY OF DISSIPATING AND REFORMING TORNADOES. THE TORNADO WILL BE NEAR... PARADISE BY 645 PM PDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING PENNY SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3982 12160 3957 12154 3953 12195 3974 12199 TIME...MOT...LOC 0132Z 259DEG 11KT 3971 12168 $$ DANG/RB
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 5:01 PM PDT | Special Weather Statement | STO | Butte | 59 min |
| May 25, 5:12 PM PDT | Tornado Warning | STO | Butte, Glenn | 63 min |
| May 25, 6:45 PM PDT | Tornado Warning | STO | Butte | 45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.