Alert archive / Nebraska / Tornado Warnings in 2004

Tornado Warning 1, NWS North Platte, NE

April 20, 2004Holt County, Nebraska

NWS North Platte, NE issued this tornado warning at Apr 20, 2004, 6:04 PM CDT for Holt County, Nebraska. It was in force for 26 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: Apr 20, 2004, 6:04 PM CDT (23:04 UTC)
Expired: Apr 20, 2004, 6:30 PM CDT
In force: 26 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Holt County, NE

What was reported inside it

Time	Report	Where	Remark
Apr 20, 6:07 PM CDT	TORNADO	7 W Ewing, NE	TORNADO REPORTED ON THE GROUND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.1 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.

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1275 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -304 m²/s²
0-3 km storm-relative helicity: -332 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 
WFUS53 KLBF 202304
TORLBF
NEC089-202330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
604 PM CDT TUE APR 20 2004

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEAST HOLT COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 630 PM CDT

* AT 545 PM CDT...THE PUBLIC REPORTED A TORNADO 11 MILES NORTH OF 
CHAMBERS...MOVING SOUTHEAST AT 40 MPH.

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 4283 9902 4232 9900 4211 9832 4274 9833

$$

SPRINGER

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 20, 3:23 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	22 min
Apr 20, 3:46 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	44 min
Apr 20, 4:33 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	42 min
Apr 20, 4:39 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	36 min
Apr 20, 4:49 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	41 min
Apr 20, 5:29 PM CDT	Severe Thunderstorm Warning	LBF	Holt	46 min

Nearby

Tornado Warnings in Nebraska, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.