Alert archive / Kansas / Tornado Warnings in 1990

Tornado Warning 37, NWS Wichita, KS

July 21, 1990Butler County, Kansas

NWS Wichita, KS issued this tornado warning at Jul 21, 1990, 2:17 PM CDT for Butler County, Kansas. It was in force for 28 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: Jul 21, 1990, 2:17 PM CDT (19:17 UTC)
Expired: Jul 21, 1990, 2:45 PM CDT
In force: 28 min
Issued by: NWS Wichita, KS
Area: Whole counties

County Butler County, KS

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Jul 21, 2:25 PM CDT	Tornado F0	Butler, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 7.3 hours before the alert went out and 171 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: 160 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 619 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KICT 211918
TORICT
KSC015-211945-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WICHITA KS
217 PM CDT SAT JUL 21 1990
 
THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  245 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHEAST KANSAS
          ...NORTHERN BUTLER
 
AT 214 PM CDT PUBLIC REPORTS OF FUNNELL CLOUDS AND POSSIBLE TORNADOS
HAVE CONTINUED IN THE ELDORADO AREA. ALL AREAS EAST AND WEST OF
EDORADO COULD RECEIVE A TORNADO. TAKE COVER NOW.
 
 
IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO
TO A STRONG BUILDING. DO NOT USE YOUR CAR TO TRY TO OUTRUN A
TORNADO.  CARS ARE EASILY TOSSED AROUND BY TORfNADO WINDS. IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 1:50 PM CDT	Tornado Warning	ICT	Butler	25 min

Nearby

Tornado Warnings in Kansas, 1990 Every tornado warning in 1990 Tornadoes in 1990

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.