Alert archive / Nebraska / Tornado Warnings in 1997

Tornado Warning 1, NWS Cheyenne, WY

April 4, 1997Banner County, Kimball County, Nebraska; Laramie County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Apr 4, 1997, 3:52 PM MST for Banner County, Kimball County, Nebraska; Laramie County, Wyoming. It was in force for 18 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
Apr 4, 1997, 3:52 PM MST (22:52 UTC)
Expired
Apr 4, 1997, 4:10 PM MST
In force
18 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Banner County, NE, Kimball County, NE, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 68 km from the middle of the area, began a volume at 22:53 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 nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.9 hours before the alert went out and 178 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, Denver, CO at 12:00Z on 1997-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 1997-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1229 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
59 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 
TTAA00 KCYS 042252 RRA
TORCYS
NEC007-105-WYC021-042310-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
352 PM MST FRI APR 4 1997

* TORNADO WARNING FOR
  NORTEASTERN LARAMIE COUNTY IN SOUTHEASTERN WYOMING
  EXTREME SOUTHWESTERN BANNER COUNTY IN WESTERN NEBRASKA PANHANDLE
  EXTREME NORTHWESTERN KIMBALL COUNTY IN WESTERN NEBRASKA PANHANDLE

* UNTIL 410 PM MST

* AFFECTED AREAS INCLUDE 
  ALBIN WYOMING
 
* THIS WARNING UPGRADES THE PREVIOUS SEVERE THUNDERSTORM WARNING FOR
  NORTHWEST KIMBALL COUNTY

  AT 345 PM MST...LAW ENFORCEMENT OFFICIALS IN PINE BLUFFS WYOMING
  REPORTED A TORNADO 9 MILES NORTH AND 5 MILES EAST OF PINE BLUFFS. 
  DOPPLER RADAR IN CHEYENNE INDICATES THIS STORM IS MOVING NORTH
  NORTHWEST AT 30 MPH.

IF YOU ARE IN THIS AREA...TAKE SHELTER NOW.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR
BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.  AVOID
WINDOWS.

JBS
&

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 4, 3:38 PM MSTSevere Thunderstorm WarningCYSBanner, Kimball32 min

Nearby

Tornado Warnings in Nebraska, 1997Tornado Warnings in Wyoming, 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.