Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 20, NWS North Platte, NE

June 9, 2003Custer County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 9, 2003, 7:32 PM CDT for Custer County, Nebraska. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 9, 2003, 7:32 PM CDT (00:32 UTC)
Expired: Jun 9, 2003, 8:00 PM CDT
In force: 28 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Custer County, NE

The radar

The North Platte radar (KLNX), 101 km from the middle of the area, began a volume at 00:31 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.

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 9, 4:50 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.5 hours before the alert went out and 109 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: 301 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 3407 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 100032
TORLBF
NEC041-100100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
733 PM CDT MON JUN 9 2003

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 727 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM WITH STRONG
  ROTATION 2 MILES SOUTHEAST OF SARGENT...OR ABOUT 11 MILES SOUTH OF
  TAYLOR...MOVING EAST AT 10 MPH. THIS STORM IS CAPABLE OF PRODUCING
  A TORNADO AT ANY TIME.

* THE DEVELOPING TORNADO WILL BE NEAR...
  5 MILES NORTH OF COMSTOCK AROUND 745 PM CDT

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT MONDAY EVENING FOR
NORTH CENTRAL NEBRASKA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1000 PM CDT MONDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4171 9962 4140 9957 4145 9922 4173 9924

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:15 PM CDT	Tornado Warning	LBF	Boyd, Holt	60 min
Jun 9, 7:16 PM CDT	Tornado Warning	LBF	Holt	59 min
Jun 9, 8:00 PM CDT	Tornado Warning	LBF	Custer	30 min
Jun 9, 8:08 PM CDT	Tornado Warning	LBF	Boyd, Keya Paha	37 min
Jun 9, 8:19 PM CDT	Tornado Warning	LBF	Holt	41 min
Jun 9, 8:28 PM CDT	Tornado Warning	LBF	Custer	47 min

Nearby

Tornado Warnings in Nebraska, 2003 Every tornado warning in 2003 Tornadoes in 2003

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; radar from the NEXRAD Level II archive.