Alert archive / Nebraska / Tornado Warnings in 2000

Tornado Warning 37, NWS North Platte, NE

July 24, 2000Custer County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 24, 2000, 10:39 PM CDT for Custer County, Nebraska. It was in force for 66 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: Jul 24, 2000, 10:39 PM CDT (03:39 UTC)
Expired: Jul 24, 2000, 11:45 PM CDT
In force: 66 min
Issued by: NWS North Platte, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Custer County, NE

The radar

The North Platte radar (KLNX), 99 km from the middle of the area, began a volume at 03:42 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
Jul 24, 11:05 PM CDT	Hail 0.75	Merna, 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 24, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.7 hours before the alert went out and 89 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: 2383 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 2608 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 250340
TORLBF

NEC041-250445-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1039 PM CDT MON JUL 24 2000

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  CUSTER COUNTY IN CENTRAL NEBRASKA

* UNTIL 1145 PM CDT

* AT 1037 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR MERNA...OR ABOUT 10 MILES NORTHWEST OF BROKEN BOW... 
  MOVING SOUTH SOUTHEAST AT 25 MPH.

* THE TORNADO IS EXPECTED TO BE...
  6 MILES WEST OF BROKEN BOW AROUND 1055 PM CDT
  10 MILES EAST OF CALLAWAY AROUND 1100 PM CDT
  12 MILES WEST OF BERWYN AROUND 1105 PM CDT
  6 MILES EAST OF OCONTO AROUND 1125 PM CDT

THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY...IT MAY SAVE YOUR
LIFE.

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT BECAUSE THEY ARE HARD TO
SEE. TAKE COVER NOW.

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 4172 9935 4155 10002 4107 10011 4108 9925

$$

WERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 7:26 PM CDT	Tornado Warning	LBF	Brown, Keya Paha	64 min
Jul 24, 8:14 PM CDT	Tornado Warning	LBF	Brown, Cherry	61 min
Jul 24, 9:05 PM CDT	Tornado Warning	LBF	Blaine	55 min
Jul 24, 9:14 PM CDT	Tornado Warning	LBF	Brown, Cherry	31 min
Jul 24, 9:34 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	56 min
Jul 24, 9:47 PM CDT	Tornado Warning	LBF	Custer	58 min
Jul 24, 9:58 PM CDT	Tornado Warning	LBF	Blaine	62 min
Jul 24, 10:11 PM CDT	Severe Thunderstorm Warning	LBF	Garfield	49 min
Jul 24, 11:45 PM CDT	Severe Thunderstorm Warning	LBF	Custer	30 min

Nearby

Tornado Warnings in Nebraska, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.