Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 209, NWS North Platte, NE

July 24, 2000Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 24, 2000, 11:45 PM CDT for Custer County, Nebraska. It was in force for 30 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, 11:45 PM CDT (04:45 UTC)
Expired: Jul 25, 2000, 12:15 AM CDT
In force: 30 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), 126 km from the middle of the area, began a volume at 04:49 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, 11:59 PM CDT	Hail 0.88	Oconto, 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, 4.8 hours before the alert went out and 80 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 
WUUS53 KLBF 250446
SVRLBF
NEC041-250515-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1145 PM CDT MON JUL 24 2000

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL CUSTER COUNTY IN CENTRAL NEBRASKA

* UNTIL 1215 AM CDT

* AT 1144 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTHEAST OF OCONTO...OR ABOUT 23 MILES
  SOUTH OF BROKEN BOW...MOVING SOUTH AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  OVER FARM AND RANGELANDS EAST AND SOUTH OF OCONTO

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE 
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE 
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4117 9956 4116 9980 4089 9981 4090 9953

$$

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, 10:39 PM CDT	Tornado Warning	LBF	Custer	66 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2000 Every severe thunderstorm warning 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.