Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 5, NWS North Platte, NE

June 12, 2001Sheridan County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 12, 2001, 7:30 PM MDT for Sheridan County, Nebraska. It was in force for 45 min. 1 report 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: Jun 12, 2001, 7:30 PM MDT (01:30 UTC)
Expired: Jun 12, 2001, 8:15 PM MDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Sheridan County, NE

The radar

The Rapid City radar (KUDX), 134 km from the middle of the area, began a volume at 01:31 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.

What was reported inside it

Time	Report	Where	Remark
Jun 12, 7:43 PM MDT	Hail 1	White Clay, 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
Jun 12, 6:30 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 1.5 hours before the alert went out and 129 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: 642 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 130130
TORLBF
NEC161-130215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
730 PM MDT TUE JUN 12 2001

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN SHERIDAN COUNTY IN THE PANHANDLE OF NEBRASKA

* UNTIL 815 PM MDT

* AT 727 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO 27 MILES NORTHWEST OF
  GORDON...OR ABOUT 20 MILES NORTH OF HAY SPRINGS...MOVING EAST AT 25
  MPH. DOPPLER RADAR INDICATED ANOTHER STORM AROUND 10 MILES EAST
  OF HEMINGFORD MOVING EAST AT 25 MPH. THIS STORM HAS THE POTENTIAL TO 
  PRODUCE GOLF BALL SIZE HAIL. 

* THE TORNADO IS EXPECTED TO BE...
  10 MILES NORTH OF GORDON AROUND 815 PM MDT

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT TUESDAY EVENING
FOR NORTH CENTRAL NEBRASKA. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT MDT WEDNESDAY MORNING FOR NORTHWESTERN NEBRASKA.

LAT...LON 4307 10278 4276 10277 4276 10212 4304 10212

$$

AWJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 6:27 PM MDT	Tornado Warning	LBF	Sheridan	63 min
Jun 12, 8:14 PM MDT	Tornado Warning	LBF	Sheridan	46 min
Jun 12, 8:52 PM MDT	Tornado Warning	LBF	Cherry, Sheridan	38 min
Jun 12, 9:28 PM MDT	Tornado Warning	LBF	Cherry	47 min
Jun 12, 9:40 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	50 min
Jun 12, 10:14 PM MDT	Tornado Warning	LBF	Cherry	46 min
Jun 12, 10:28 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	32 min
Jun 12, 10:54 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	51 min
Jun 12, 11:25 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	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.