Alert archive / Kansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 12, NWS Topeka, KS

April 30, 1997Marshall County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 30, 1997, 1:17 AM CDT for Marshall County, Kansas. It was in force for 43 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 30, 1997, 1:17 AM CDT (06:17 UTC)
Expired
Apr 30, 1997, 2:00 AM CDT
In force
43 min
Issued by
NWS Topeka, KS
Area
Whole counties

County Marshall County, KS

The radar

The Topeka radar (KTWX), 91 km from the middle of the area, began a volume at 06:18 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
Apr 30, 12:00 AM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 6.3 hours before the alert went out and 116 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 1997-04-30Temperature 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 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 1997-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
1985 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
214 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 300617 RRA
SVRTOP
KSC117-300700-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
117 AM CDT WED APR 30 1997

* SEVERE THUNDERSTORM WARNING FOR
  MARSHALL COUNTY - NORTHEAST KANSAS

* UNTIL 200 AM CDT
 
* SOME LOCATIONS AFFECTED
  BLUE RAPIDS
  WINIFRED
  FRANKFORT
  BEATTIE
  AXTELL

* AT 115 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM
  12 MILES SOUTH MARYSVILLE NEAR BLUE RAPIDS MOVING
  NORTHEAST AT 35 MPH.

* THE STORM WILL BE NEAR
  WINIFRED AROUND 130 AM
  LOCATED BETWEEN BEATTIE AND AXTELL AROUND 150 AM CDT
 
THIS IS A DANGEROUS STORM!  STAY INDOORS AWAY FROM WINDOWS!

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 5:49 AM CDTSevere Thunderstorm WarningTOPMorris26 min
Apr 30, 6:08 AM CDTSevere Thunderstorm WarningTOPWabaunsee47 min
Apr 30, 6:56 AM CDTSevere Thunderstorm WarningTOPShawnee34 min
Apr 30, 7:14 AM CDTSevere Thunderstorm WarningTOPJackson31 min
Apr 30, 7:18 AM CDTSevere Thunderstorm WarningTOPJefferson47 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.