Alert archive / Kansas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 252, NWS Wichita, KS

September 21, 1998Sumner County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Sep 21, 1998, 6:28 PM CDT for Sumner County, Kansas. It was in force for 62 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: Sep 21, 1998, 6:28 PM CDT (23:28 UTC)
Expired: Sep 21, 1998, 7:30 PM CDT
In force: 62 min
Issued by: NWS Wichita, KS
Area: Whole counties

County Sumner County, KS

The radar

The Wichita radar (KICT), 47 km from the middle of the area, began a volume at 23:31 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
Sep 21, 7:15 PM CDT	Hail 0.75	South Haven, KS
Sep 21, 7:27 PM CDT	Thunderstorm Wind 52	South Haven, KS	Window blown out at South Haven Cafe and a tree fell onto a house in South Haven.

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

Dodge City, (KDDC), launched 12:00Z, 11.5 hours before the alert went out and 222 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: 442 J/kg
Mixed-layer CIN: -334 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 353 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.

482 
WUUS1 KICT 212330 RRA
SVRICT
KSC191-220030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WICHITA KS
628 PM CDT MON SEP 21 1998

THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
     SUMNER COUNTY IN SOUTH CENTRAL KANSAS

* UNTIL 730 PM CDT

* AT 628 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTH OF ARGONIA...OR ABOUT 35 MILES
  SOUTHWEST OF WICHITA...MOVING EAST AT 25 MILES PER HOUR.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
     MAYFIELD
     PERTH
     MILAN
     SOUTH HAVEN

HAIL UP TO THE SIZE OF DIMES AND WINDS GREATER THAN 60 MILES AN HOUR 
ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE 
UNTIL THE STORM HAS PASSED.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN WICHITA.

HOWERTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 20, 7:58 PM CDT	Severe Thunderstorm Warning	ICT	Marion	62 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1998 Every severe thunderstorm warning in 1998

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.