Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 14, NWS North Platte, NE

June 9, 2003Keya Paha County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 9, 2003, 6:02 PM CDT for Keya Paha County, Nebraska. It was in force for 43 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, 6:02 PM CDT (23:02 UTC)
Expired: Jun 9, 2003, 6:45 PM CDT
In force: 43 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Keya Paha County, NE

The radar

The North Platte radar (KLNX), 135 km from the middle of the area, began a volume at 23:05 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, 2:55 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.0 hours before the alert went out and 215 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: 343 J/kg
Mixed-layer CIN: -293 J/kg
Mixed-layer LCL: 1527 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 092302
TORLBF
NEC103-092345-

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 645 PM CDT

* AT 555 PM CDT...STORM SPOTTERS REPORTED A TORNADO 10 MILES SOUTH   
  OF MILLS...NEAR JUNCTION OF HIGHWAYS 12 AND 137...MOVING EAST AT   
  20 MPH.

* THE DEVELOPING TORNADO WILL BE NEAR...
  12 MILES SOUTHEAST OF MILLS AROUND 625 PM CDT

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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 4296 9975 4274 9958 4283 9928 4298 9928

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 5:11 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	64 min
Jun 9, 5:47 PM CDT	Severe Thunderstorm Warning	LBF	Custer	58 min
Jun 9, 5:54 PM CDT	Severe Thunderstorm Warning	LBF	Boyd	51 min
Jun 9, 6:18 PM CDT	Tornado Warning	LBF	Holt, Keya Paha, Rock	57 min
Jun 9, 6:38 PM CDT	Tornado Warning	LBF	Holt	52 min
Jun 9, 6:45 PM CDT	Severe Thunderstorm Warning	LBF	Custer	45 min
Jun 9, 6:52 PM CDT	Tornado Warning	LBF	Custer	38 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.