Alert archive / Kansas / Tornado Warnings in 1999

Tornado Warning 21, NWS Topeka, KS

May 30, 1999Clay County, Kansas

NWS Topeka, KS issued this tornado warning at May 30, 1999, 8:57 PM CDT for Clay County, Kansas. It was in force for 33 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: May 30, 1999, 8:57 PM CDT (01:57 UTC)
Expired: May 30, 1999, 9:30 PM CDT
In force: 33 min
Issued by: NWS Topeka, KS
Area: Whole counties

County Clay County, KS

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.0 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-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: 978 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1428 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

999 
WFUS1 KTOP 310200 RRA
TORTOP
KSC027-310230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
857 PM CDT SUN MAY 30 1999

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CLAY COUNTY IN NORTH CENTRAL KANSAS

* UNTIL 930 PM CDT

* AT 856 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO 5 MILES NORTH OF CLAY
  CENTER...MOVING SOUTHEAST AT 15 MPH.

* SOME LOCATIONS AFFECTED...
 
  GREEN
  CLAY CENTER
    
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...LEAVE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 7:37 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	63 min
May 30, 7:54 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Washington	31 min
May 30, 8:21 PM CDT	Severe Thunderstorm Warning	TOP	Clay	44 min
May 30, 8:23 PM CDT	Severe Thunderstorm Warning	TOP	Republic	47 min
May 30, 8:34 PM CDT	Severe Thunderstorm Warning	TOP	Washington	51 min
May 30, 9:04 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	31 min
May 30, 9:28 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic, Washington	32 min
May 30, 9:28 PM CDT	Tornado Warning	TOP	Clay, Riley	42 min
May 30, 9:58 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud	47 min
May 30, 10:10 PM CDT	Tornado Warning	TOP	Pottawatomie, Riley	30 min
May 30, 10:42 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Ottawa	43 min
May 30, 10:46 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Riley	44 min
May 31, 12:59 AM CDT	Severe Thunderstorm Warning	TOP	Anderson	26 min

Nearby

Tornado Warnings in Kansas, 1999 Every tornado warning in 1999 Tornadoes in 1999

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.