Alert archive / Kansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 91, NWS Topeka, KS

June 21, 1997Clay County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 21, 1997, 8:51 PM CDT for Clay County, Kansas. It was in force for 49 min. 2 reports 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 21, 1997, 8:51 PM CDT (01:51 UTC)
Expired
Jun 21, 1997, 9:40 PM CDT
In force
49 min
Issued by
NWS Topeka, KS
Area
Whole counties

County Clay County, KS

The radar

The Topeka radar (KTWX), 89 km from the middle of the area, began a volume at 01:51 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
Jun 21, 9:20 PM CDTHail 0.75Clay Center, KS
Jun 21, 9:20 PM CDTHail 0.75Clay Center, KS

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

Topeka, KS (KTOP), launched 00:00Z, 1.9 hours before the alert went out and 137 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, Topeka, KS at 00:00Z on 1997-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4157 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 1997-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
4157 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1134 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
-8 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 KTOP 220151 RRA
SVRTOP
KSC027-220240-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
851 PM CDT SAT JUN 21 1997

* SEVERE THUNDERSTORM WARNING FOR
     SOUTHERN CLAY COUNTY - NORTH CENTRAL KANSAS

* UNTIL 940 PM CDT
 
* SOME LOCATIONS AFFECTED
     LADYSMITH
     WAKEFIELD
     BROUGHTON
     CLAYCENTER

* AT 850PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTH
  OF CLAY CENTER MOVING MOVING NORTHEAST :AT 10 MPH.
  EXPECT 3/4 INCH TO 1 INCH HAIL WITH THIS THUNDERSTORM.
 
THIS IS A DANGEROUS STORM!  STAY INDOORS AWAY FROM WINDOWS!

Nearby

Severe Thunderstorm Warnings in Kansas, 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.