Alert archive / Nebraska / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 98, NWS North Platte, NE

June 20, 2003Keith County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 20, 2003, 7:22 PM MDT for Keith County, Perkins County, Nebraska. It was in force for 53 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, 7:22 PM MDT (01:22 UTC)
Expired: Jun 20, 2003, 8:15 PM MDT
In force: 53 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

Counties Keith County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 135 km from the middle of the area, began a volume at 01:23 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, 2:25 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 20, 4:25 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.4 hours before the alert went out and 187 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.

497 
WUUS53 KLBF 210122
SVRLBF
NEC101-135-210215-

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KEITH COUNTY IN SOUTHWEST NEBRASKA
  PERKINS COUNTY IN SOUTHWEST NEBRASKA

* UNTIL 815 PM MDT

* AT 718 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM ALONG A LINE
  EXTENDING FROM 10 MILES SOUTH OF GRANT TO 6 MILES WEST OF
  LEMOYNE...MOVING EAST AT 65 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  OVER ROSCOE AROUND 730 PM MDT
  OVER PAXTON AROUND 740 PM MDT
  OVER SARBEN AROUND 745 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.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING
WINDS.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT FRIDAY
EVENING FOR SOUTHWESTERN NEBRASKA.

LAT...LON 4135 10203 4136 10130 4074 10130 4074 10198

$$

KAR

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, 7:32 PM MDT	Tornado Warning	LBF	Garden	28 min
Jun 20, 8:40 PM MDT	Severe Thunderstorm Warning	LBF	Chase	65 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.