Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 5, NWS North Platte, NE

June 20, 1997Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 20, 1997, 6:25 PM MDT for Cherry County, Nebraska. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 20, 1997, 6:25 PM MDT (00:25 UTC)
Expired
Jun 20, 1997, 7:00 PM MDT
In force
35 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Cherry County, NE

The radar

The North Platte radar (KLNX), 79 km from the middle of the area, began a volume at 00:29 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.

IssuedProductOfficeLasted
Jun 20, 2:30 PM MDTTornado WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.4 hours before the alert went out and 163 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3148 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
3148 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1727 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

457 
WFUS1 KLBF 210025 RRA
TORLBF
NEC031-210100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
725 PM CDT (625 PM MDT) FRI JUN 20 1997

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 800 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTH CENTRAL NEBRASKA

   ...SOUTHWESTERN CHERRY COUNTY
 
AT 723 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY NORTH PLATTE
DOPPLER RADAR 27 MILES WEST NORTHWEST OF MULLEN MOVING EAST AT 25
MPH.

THE POSSIBLE TORNADO IS EXPECTED TO REMAIN IN RURAL AREAS AND MOVE
JUST NORTH OF THE COUNTY LINE.
 
IF YOU ARE IN THE PATH OF THIS TORNADO TAKE SHELTER IMMEDIATELY.
THE SAFEST PLACE IN A HOME OR BUSINESS IS AN INTERIOR ROOM ON THE
LOWEST FLOOR POSSIBLE. AVOID WINDOWS.

THIS CANCELS THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SHERIDAN
COUNTY.

BOWMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 6:16 PM MDTSevere Thunderstorm WarningLBFArthur, McPherson64 min
Jun 20, 7:20 PM MDTSevere Thunderstorm WarningLBFHooker, McPherson, Thomas45 min
Jun 20, 7:38 PM MDTSevere Thunderstorm WarningLBFLincoln62 min
Jun 20, 7:50 PM MDTSevere Thunderstorm WarningLBFLogan65 min
Jun 20, 8:00 PM MDTSevere Thunderstorm WarningLBFBlaine, Thomas65 min
Jun 20, 8:08 PM MDTTornado WarningLBFLogan32 min
Jun 20, 8:29 PM MDTSevere Thunderstorm WarningLBFCuster61 min
Jun 20, 8:41 PM MDTSevere Thunderstorm WarningLBFLincoln64 min
Jun 20, 9:42 PM MDTSevere Thunderstorm WarningLBFPerkins63 min
Jun 20, 9:53 PM MDTSevere Thunderstorm WarningLBFLincoln62 min
Jun 20, 10:15 PM MDTSevere Thunderstorm WarningLBFHayes65 min
Jun 20, 10:38 PM MDTSevere Thunderstorm WarningLBFFrontier62 min
Jun 21, 9:45 AM MDTSevere Thunderstorm WarningLBFHolt, Rock65 min

Nearby

Tornado Warnings in Nebraska, 1997Every tornado warning in 1997Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.