Alert archive / Kansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 21, NWS Topeka, KS

April 16, 2002Clay County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 16, 2002, 8:52 PM CDT for Clay County, Kansas. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 16, 2002, 8:52 PM CDT (01:52 UTC)
Expired: Apr 16, 2002, 9:30 PM CDT
In force: 38 min
Issued by: NWS Topeka, KS
Area: Counties, with a storm outline in the text

County Clay County, KS

The radar

The Topeka radar (KTWX), 96 km from the middle of the area, began a volume at 01:54 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

Time	Report	Where	Remark
Apr 16, 9:15 PM CDT	Hail 0.75	Morganville, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 16, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.9 hours before the alert went out and 142 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 542 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 1388 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 329 m²/s²
0-3 km storm-relative helicity: 342 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KTOP 170152
SVRTOP
KSC027-170230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
852 PM CDT TUE APR 16 2002

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN NORTH CENTRAL KANSAS

* UNTIL 930 PM CDT

* AT 849 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 17 MILES NORTHWEST OF MORGANVILLE
  TO 19 MILES WEST OF LONGFORD...OR FROM 17 MILES NORTHEAST OF
  CONCORDIA TO 23 MILES NORTH OF SALINA...MOVING EAST AT 45 MPH.

* SOME LOCATIONS AFFECTED...
  LONGFORD
  OAK HILL
  MORGANVILLE
  IDANA
  CLAY CENTER
  GREEN
  WAKEFIELD

LARGE HAIL...VERY HEAVY RAIN AND DAMAGING WINDS ARE LIKELY WITH THIS
STORM. TAKE COVER INSIDE A BUILDING.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.

LAT...LON 3955 9736 3941 9736 3913 9736 3915 9702
          3955 9696 3956 9699

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 8:13 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	47 min
Apr 16, 8:35 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	40 min
Apr 16, 10:30 PM CDT	Severe Thunderstorm Warning	TOP	Geary	30 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2002 Every severe thunderstorm warning in 2002

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.