Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 96, NWS Cheyenne, WY

August 13, 1997Banner County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 13, 1997, 5:46 PM MDT for Banner County, Nebraska. It was in force for 29 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
Aug 13, 1997, 5:46 PM MDT (23:46 UTC)
Expired
Aug 13, 1997, 6:15 PM MDT
In force
29 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Banner County, NE

The radar

The Cheyenne radar (KCYS), 101 km from the middle of the area, began a volume at 23:49 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

TimeReportWhereRemark
Aug 13, 6:05 PM MDTThunderstorm Wind 50Harrisburg, NERecorded at USAF site.

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 nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.8 hours before the alert went out and 191 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 1997-08-13Temperature 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 1997-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.19395878Sfc1 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
1924 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
71 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 132347 RRA
SVRCYS
NEC007-140015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
546 PM MDT WED AUG 13 1997

* SEVERE THUNDERSTORM WARNING FOR
  WESTERN BANNER COUNTY IN WESTERN NEBRASKA PANHANDLE

* UNTIL 615 PM MDT

* THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.

* AT 541 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR 30 MILES NORTHWEST OF KIMBALL OR 21 MILES WEST OF HARRISBURG
  MOVING EAST AT 25 MPH.

 
AT 543 PM DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN
NORTHEAST LARAMIE COUNTY WYOMING MOVING EAST AT 25 MILES AN HOUR.
THE STORM WILL MOVE THROUG WESTERN BANNER COUNTY IN THE NEXT HALF
HOUR.  GUSTS TO 65 MPH HAVE BEEN REPORTED WITH THIS STORM.
 
STRONG WINDS WITH THIS STORM MAY CAUSE INJURY OR DAMAGE.  TAKE SHELTER
INSIDE A STURDY BUILDING AWAY FROM ALL DOORS AND WINDOWS.

PAL


&

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997Every 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.