Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 18, NWS North Platte, NE

July 4, 2001Lincoln County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 4, 2001, 8:43 PM CDT for Lincoln County, Nebraska. It was in force for 32 min. 3 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jul 4, 2001, 8:43 PM CDT (01:43 UTC)
Expired: Jul 4, 2001, 9:15 PM CDT
In force: 32 min
Issued by: NWS North Platte, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 90 km from the middle of the area, began a volume at 01:50 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
Jul 4, 8:45 PM CDT	Hail 0.75	Sutherland, NE
Jul 4, 9:00 PM CDT	Hail 1	Sutherland, NE
Jul 4, 9:00 PM CDT	Hail 0.88	Sutherland, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 4, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.7 hours before the alert went out and 38 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: 2575 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1657 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 17.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 050144
TORLBF

NEC111-050215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
843 PM CDT WED JUL 4 2001

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA

* UNTIL 915 PM CDT

* AT 840 PM CDT...THE PUBLIC REPORTED A FUNNEL CLOUD 5 MILES         
  NORTHWEST OF SUTHERLAND...OR ABOUT 22 MILES WEST OF NORTH
  PLATTE...MOVING SOUTH AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE...
  OVER SUTHERLAND AROUND 900 PM CDT
  8 MILES WEST OF HERSHEY AROUND 905 PM CDT

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT
THURSDAY MORNING FOR WESTERN NEBRASKA. A SEVERE THUNDERSTORM WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING FOR
SOUTHWESTERN NEBRASKA.

LAT...LON 4137 10093 4139 10125 4097 10123 4103 10081
$$

SPRINGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:02 PM CDT	Tornado Warning	LBF	McPherson	58 min
Jul 4, 7:51 PM CDT	Tornado Warning	LBF	Arthur	54 min
Jul 4, 7:59 PM CDT	Severe Thunderstorm Warning	LBF	McPherson	31 min
Jul 4, 8:06 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	54 min
Jul 4, 8:22 PM CDT	Severe Thunderstorm Warning	LBF	Keith	53 min
Jul 4, 9:10 PM CDT	Tornado Warning	LBF	Lincoln	35 min
Jul 4, 9:13 PM CDT	Severe Thunderstorm Warning	LBF	Keith	62 min
Jul 4, 9:18 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	57 min
Jul 4, 9:50 PM CDT	Severe Thunderstorm Warning	LBF	Chase	55 min
Jul 5, 12:40 AM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	65 min

Nearby

Tornado Warnings in Nebraska, 2001 Every tornado warning in 2001 Tornadoes in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.