Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 6, NWS North Platte, NE

May 3, 2003Grant County, Nebraska

NWS North Platte, NE issued this tornado warning at May 3, 2003, 7:29 PM MDT for Grant County, Nebraska. It was in force for 46 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, 7:29 PM MDT (01:29 UTC)
Expired: May 3, 2003, 8:15 PM MDT
In force: 46 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), 114 km from the middle of the area, began a volume at 01:32 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, 1.5 hours before the alert went out and 141 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.

000 
WFUS53 KLBF 040129
TORLBF
NEC075-040215-

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 815 PM MDT

* AT 727 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM WITH STRONG
  ROTATION 8 MILES SOUTHWEST OF ASHBY...OR ABOUT 31 MILES NORTHWEST
  OF ARTHUR...MOVING EAST AT 15 MPH. THIS STORM IS CAPABLE OF
  PRODUCING A TORNADO AT ANY TIME.

* THE DEVELOPING TORNADO WILL BE NEAR...
  5 MILES SOUTH OF ASHBY AROUND 750 PM MDT
  NEAR HYANNIS AROUND 815 PM MDT

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

LAT...LON 4182 10206 4200 10204 4200 10198 4208 10198
          4208 10176 4175 10172 4175 10191 4175 10206

$$

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, 7:35 PM MDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	55 min
May 3, 8:10 PM MDT	Tornado Warning	LBF	Grant	50 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.