Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 17, NWS North Platte, NE

July 4, 2001Arthur County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 4, 2001, 6:51 PM MDT for Arthur County, Nebraska. It was in force for 54 min. No storm report in the archive falls 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.

The facts

Issued: Jul 4, 2001, 6:51 PM MDT (00:51 UTC)
Expired: Jul 4, 2001, 7:45 PM MDT
In force: 54 min
Issued by: NWS North Platte, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Arthur County, NE

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 MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.9 hours before the alert went out and 94 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.

390 
WFUS53 KLBF 050051
TORLBF
NEC005-050145-

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA

* UNTIL 745 PM MDT

* AT 647 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO OVER NORTHEASTERN ARTHUR
  COUNTY...OR ABOUT 11 MILES NORTHEAST OF ARTHUR...MOVING SOUTH AT 20
  MPH.

* THE TORNADO IS EXPECTED TO BE...
  NEAR AND SOUTH OF THREE MILE LAKE

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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.

LAT...LON 4171 10145 4172 10170 4143 10168 4143 10142

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 6:02 PM MDT	Tornado Warning	LBF	McPherson	58 min
Jul 4, 6:59 PM MDT	Severe Thunderstorm Warning	LBF	McPherson	31 min
Jul 4, 7:06 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	54 min
Jul 4, 7:22 PM MDT	Severe Thunderstorm Warning	LBF	Keith	53 min
Jul 4, 7:43 PM MDT	Tornado Warning	LBF	Lincoln	32 min
Jul 4, 8:10 PM MDT	Tornado Warning	LBF	Lincoln	35 min
Jul 4, 8:13 PM MDT	Severe Thunderstorm Warning	LBF	Keith	62 min
Jul 4, 8:18 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	57 min
Jul 4, 8:50 PM MDT	Severe Thunderstorm Warning	LBF	Chase	55 min
Jul 4, 11:40 PM MDT	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; the sounding from the Mesonet's radiosonde archive.