Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 39, NWS North Platte, NE

June 18, 1997Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 18, 1997, 6:13 PM MDT for Perkins County, Nebraska. It was in force for 62 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 18, 1997, 6:13 PM MDT (00:13 UTC)
Expired: Jun 18, 1997, 7:15 PM MDT
In force: 62 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Perkins County, NE

The radar

The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 00:15 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.

What was reported inside it

Time	Report	Where	Remark
Jun 18, 6:35 PM MDT	Hail 0.75	Venango, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 18, 3:30 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 93 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: 601 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 2921 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 190013 RRA
SVRLBF
NEC135-190115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
713 PM CDT (613 PM MDT) WED JUN 18 1997

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM MDT (815 PM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWESTERN NEBRASKA

   ...PERKINS COUNTY
 
AT 611 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH PLATTE
DOPPLER RADAR 22 MILES SOUTHWEST OF OGALLALA OR 12 MILES NORTHWEST
OF BRANDON MOVING EAST SOUTHEAST AT 30 MPH.

DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR...
  BRANDON                      BY 630 PM MDT
  GRANT                        BY 645 PM MDT
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.  IF YOU ARE IN THE PATH OF THIS STORM
YOU SHOULD MOVE INSIDE A STRONG BUILDING AND GO TO THE LOWEST FLOOR
POSSIBLE.

MIC<HELS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 6:38 PM MDT	Severe Thunderstorm Warning	LBF	Holt, Keya Paha, Rock	62 min
Jun 18, 6:45 PM MDT	Severe Thunderstorm Warning	LBF	Custer	60 min
Jun 18, 7:03 PM MDT	Severe Thunderstorm Warning	LBF	Rock	62 min
Jun 18, 7:41 PM MDT	Severe Thunderstorm Warning	LBF	Holt	59 min
Jun 18, 7:55 PM MDT	Tornado Warning	LBF	Holt	35 min
Jun 18, 8:31 PM MDT	Severe Thunderstorm Warning	LBF	Holt	64 min
Jun 18, 8:49 PM MDT	Severe Thunderstorm Warning	LBF	Wheeler	66 min
Jun 18, 10:21 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	49 min
Jun 19, 2:33 PM MDT	Severe Thunderstorm Warning	LBF	Garden	47 min
Jun 19, 3:41 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	64 min
Jun 19, 4:18 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	62 min
Jun 19, 4:32 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	63 min
Jun 19, 5:03 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	62 min
Jun 19, 5:11 PM MDT	Severe Thunderstorm Warning	LBF	Deuel	34 min
Jun 19, 5:22 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	33 min
Jun 19, 5:48 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	62 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.