Alert archive / California / Tornado Warnings in 2014

Tornado Warning 4, NWS Sacramento, CA

March 26, 2014Glenn County, California

NWS Sacramento, CA issued this tornado warning at Mar 26, 2014, 4:30 PM PDT for Glenn County, California. It was in force for 45 min. 1 report 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: Mar 26, 2014, 4:30 PM PDT (23:30 UTC)
Expired: Mar 26, 2014, 5:15 PM PDT
In force: 45 min
Issued by: NWS Sacramento, CA
Area: Storm-based polygon

County Glenn County, CA

The radar

The Beale AFB radar (KBBX), 57 km from the middle of the area, began a volume at 23:33 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
Mar 26, 4:50 PM PDT	HAIL 0.25	2 Nnw Artois, CA	HAIL COVERING I-5 BETWEEN COUNTY ROAD 27 AND COUNTY ROAD 33. TRAFFIC IS STOPPED TO WAIT OUT THE STORM.

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, 11.5 hours before the alert went out and 212 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 46 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

256 
WFUS56 KSTO 262330
TORSTO
CAC021-270015-
/O.NEW.KSTO.TO.W.0004.140326T2330Z-140327T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SACRAMENTO CA
430 PM PDT WED MAR 26 2014

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL GLENN COUNTY IN NORTHERN CALIFORNIA...

* UNTIL 515 PM PDT

* AT 424 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO AND SIGNIFICANT 
HAIL WEST OF ARTOIS...OR 8 MILES NORTHWEST OF WILLOWS...MOVING EAST 
SOUTHEAST AT 5 TO 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GREENWOOD AND BLUEGUM

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 3971 12219 3953 12215 3954 12240 3967 12243
TIME...MOT...LOC 2328Z 273DEG 13KT 3961 12226

$$

JCLAPP

The office that day

Everything else NWS Sacramento, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 25, 5:39 PM PDT	Winter Storm Warning	STO		41 hr
Mar 25, 5:39 PM PDT	Winter Weather Advisory	STO		9 hr
Mar 25, 6:56 PM PDT	Special Weather Statement	STO	Butte	49 min
Mar 26, 2:53 PM PDT	Special Weather Statement	STO	Glenn	37 min
Mar 26, 3:16 PM PDT	Tornado Warning	STO	Glenn	29 min
Mar 26, 3:32 PM PDT	Special Weather Statement	STO	Tehama	58 min
Mar 26, 3:45 PM PDT	Tornado Warning	STO	Glenn	60 min
Mar 26, 4:14 PM PDT	Special Weather Statement	STO	Sacramento	46 min
Mar 26, 4:41 PM PDT	Special Weather Statement	STO	Shasta	49 min

Nearby

Tornado Warnings in California, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.