Alert archive / Nebraska / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 99, NWS North Platte, NE

June 20, 2003Chase County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 20, 2003, 8:40 PM MDT for Chase County, Nebraska. It was in force for 65 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 20, 2003, 8:40 PM MDT (02:40 UTC)
Expired: Jun 20, 2003, 9:45 PM MDT
In force: 65 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Chase County, NE

The radar

The Goodland radar (KGLD), 125 km from the middle of the area, began a volume at 02:41 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 20, 4:25 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.7 hours before the alert went out and 142 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2030 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 210240
SVRLBF
NEC029-210345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
840 PM MDT FRI JUN 20 2003

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHASE COUNTY IN SOUTHWEST NEBRASKA

* UNTIL 945 PM MDT

* AT 838 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM 18 MILES SOUTHWEST
  OF CHAMPION...OR ABOUT 23 MILES SOUTHWEST OF IMPERIAL...MOVING
  NORTH AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  11 MILES WEST OF CHAMPION AROUND 905 PM MDT
  14 MILES WEST OF IMPERIAL AROUND 910 PM MDT
  4 MILES EAST OF LAMAR AROUND 915 PM MDT

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER IN A SMALL
INTERIOR ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST
PROTECTION.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT FRIDAY EVENING
FOR SOUTHWEST NEBRASKA.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4037 10204 4037 10141 4067 10137 4067 10201

$$
POWER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 6:16 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	44 min
Jun 20, 6:42 PM MDT	Severe Thunderstorm Warning	LBF	Chase	63 min
Jun 20, 6:57 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	63 min
Jun 20, 7:02 PM MDT	Severe Thunderstorm Warning	LBF	Garden	43 min
Jun 20, 7:12 PM MDT	Severe Thunderstorm Warning	LBF	Deuel	33 min
Jun 20, 7:17 PM MDT	Tornado Warning	LBF	Garden	43 min
Jun 20, 7:22 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	53 min
Jun 20, 7:32 PM MDT	Tornado Warning	LBF	Garden	28 min
Jun 20, 9:13 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	32 min
Jun 21, 4:50 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Grant, Sheridan	55 min
Jun 21, 5:44 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	61 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2003 Every severe thunderstorm warning 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.