Alert archive / Utah / Tornado Warnings in 2004

Tornado Warning 1, NWS Salt Lake City, UT

September 29, 2004Beaver County, Iron County, Utah

NWS Salt Lake City, UT issued this tornado warning at Sep 29, 2004, 1:29 PM MDT for Beaver County, Iron County, Utah. It was in force for 31 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: Sep 29, 2004, 1:29 PM MDT (19:29 UTC)
Expired: Sep 29, 2004, 2:00 PM MDT
In force: 31 min
Issued by: NWS Salt Lake City, UT
Area: Counties, with a storm outline in the text

Counties Beaver County, UT, Iron County, UT

The radar

The Cedar City radar (KICX), 70 km from the middle of the area, began a volume at 19:31 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

Salt Lake City I, UT (KSLC), launched 12:00Z, 7.5 hours before the alert went out and 296 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: 1101 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 36 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.

000 
WFUS55 KSLC 291929
TORSLC
UTC001-021-292000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
128 PM MDT WED SEP 29 2004

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BEAVER COUNTY IN UTAH
  THIS INCLUDES THE CITY OF BEAVER
  EXTREME NORTHEASTERN IRON COUNTY IN UTAH

* UNTIL 200 PM MDT

* AT 119 PM MDT...THE PUBLIC REPORTED A FUNNEL CLOUD 8 MILES         
  SOUTHWEST OF BEAVER...MOVING NORTHEAST AT 5 MPH.

A TRAINED WEATHER SPOTTER IN BEAVER REPORTED A FUNNEL CLOUD CLOSE TO 
THE GROUND SOUTHWEST OF BEAVER.  THIS FUNNEL COULD TOUCH DOWN UNDER 
THE THUNDERSTORM AT ANY TIME THROUGH 200 PM.

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 3813 11295 3812 11276 3831 11261 3839 11279

$$

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 29, 4:19 PM MDT	Severe Thunderstorm Warning	SLC	Kane	41 min
Sep 29, 4:36 PM MDT	Flash Flood Warning	SLC	Kane	114 min
Sep 29, 5:00 PM MDT	Severe Thunderstorm Warning	SLC	Kane	45 min

Nearby

Tornado Warnings in Utah, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.