Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 31, NWS North Platte, NE

June 11, 2003Loup County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 11, 2003, 9:11 PM CDT for Loup County, Nebraska. It was in force for 49 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 11, 2003, 9:11 PM CDT (02:11 UTC)
Expired: Jun 11, 2003, 10:00 PM CDT
In force: 49 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Loup County, NE

The radar

The North Platte radar (KLNX), 85 km from the middle of the area, began a volume at 02:13 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.2 hours before the alert went out and 275 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: 26 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1651 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

533 
WFUS53 KLBF 120211
TORLBF
NEC115-120300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
908 PM CDT WED JUN 11 2003

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LOUP COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 1000 PM CDT

* AT 908 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM WITH STRONG
  ROTATION OVER EXTREME NORTHWESTERN LOUP COUNTY...OR ABOUT 12 MILES
  NORTHEAST OF BREWSTER...MOVING EAST AT 20 MPH. THIS STORM IS
  CAPABLE OF PRODUCING A TORNADO AT ANY TIME.

* THE DEVELOPING TORNADO WILL BE NEAR...
  FARM AND RANGELANDS OF NORTHWESTERN LOUP COUNTY
  
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR NORTH CENTRAL NEBRASKA.

LAT...LON 4207 9967 4190 9965 4191 9936 4209 9938

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:01 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	44 min
Jun 11, 7:15 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	45 min
Jun 11, 7:21 PM CDT	Tornado Warning	LBF	Rock	54 min
Jun 11, 8:04 PM CDT	Tornado Warning	LBF	Blaine	41 min
Jun 11, 8:07 PM CDT	Severe Thunderstorm Warning	LBF	Loup	53 min
Jun 11, 8:08 PM CDT	Tornado Warning	LBF	Rock	37 min
Jun 11, 8:10 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	65 min
Jun 11, 8:11 PM CDT	Severe Thunderstorm Warning	LBF	Brown	64 min
Jun 11, 8:17 PM CDT	Severe Thunderstorm Warning	LBF	Rock	58 min
Jun 11, 8:42 PM CDT	Tornado Warning	LBF	Rock	63 min
Jun 11, 8:46 PM CDT	Tornado Warning	LBF	Blaine	44 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.