Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 7, NWS North Platte, NE

May 3, 2003Grant County, Nebraska

NWS North Platte, NE issued this tornado warning at May 3, 2003, 8:10 PM MDT for Grant County, Nebraska. It was in force for 50 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: May 3, 2003, 8:10 PM MDT (02:10 UTC)
Expired: May 3, 2003, 9:00 PM MDT
In force: 50 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Grant County, NE

The radar

The North Platte radar (KLNX), 86 km from the middle of the area, began a volume at 02:12 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
May 3, 4:10 PM MDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.2 hours before the alert went out and 124 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: 125 J/kg
Mixed-layer CIN: -302 J/kg
Mixed-layer LCL: 872 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 254 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.

267 
WFUS53 KLBF 040210
TORLBF
NEC075-040300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
809 PM MDT SAT MAY 3 2003

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN GRANT COUNTY IN WEST CENTRAL NEBRASKA

* UNTIL 900 PM MDT

* AT 807 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM WITH STRONG
  ROTATION 10 MILES WEST OF WHITMAN...OR ABOUT 29 MILES NORTH OF
  ARTHUR...MOVING EAST AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING
  A TORNADO AT ANY TIME.

* THE DEVELOPING TORNADO WILL BE NEAR...
  OVER WHITMAN AROUND 830 PM MDT

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM MDT SATURDAY EVENING
FOR WESTERN NEBRASKA.

LAT...LON 4207 10173 4175 10175 4175 10145 4208 10144

$$

KAR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 6:32 PM MDT	Tornado Warning	LBF	Garden, Grant, Sheridan	58 min
May 3, 7:29 PM MDT	Tornado Warning	LBF	Grant	46 min
May 3, 7:35 PM MDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	55 min
May 3, 8:31 PM MDT	Severe Thunderstorm Warning	LBF	Garden	59 min
May 3, 8:46 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker	59 min
May 3, 9:11 PM MDT	Severe Thunderstorm Warning	LBF	Arthur	64 min
May 3, 9:32 PM MDT	Severe Thunderstorm Warning	LBF	Garden	43 min
May 3, 9:58 PM MDT	Severe Thunderstorm Warning	LBF	McPherson	62 min
May 3, 10:13 PM MDT	Severe Thunderstorm Warning	LBF	Arthur	32 min
May 3, 10:18 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	57 min
May 4, 2:01 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	59 min
May 4, 3:59 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	46 min
May 4, 4:41 PM MDT	Tornado Warning	LBF	Cherry	34 min
May 4, 5:19 PM MDT	Severe Thunderstorm Warning	LBF	Brown	56 min
May 4, 5:21 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	24 min
May 4, 5:34 PM MDT	Severe Thunderstorm Warning	LBF	Thomas	41 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.