Alert archive / Kansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 21, NWS Topeka, KS

May 7, 1997Nemaha County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 7, 1997, 5:10 PM CDT for Nemaha County, Kansas. It was in force for 45 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: May 7, 1997, 5:10 PM CDT (22:10 UTC)
Expired: May 7, 1997, 5:55 PM CDT
In force: 45 min
Issued by: NWS Topeka, KS
Area: Whole counties

County Nemaha County, KS

What was reported inside it

Time	Report	Where	Remark
May 7, 5:15 PM CDT	Hail 1	Sabetha, KS
May 7, 5:15 PM CDT	Thunderstorm Wind 52	Sabetha, 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
May 7, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.2 hours before the alert went out and 93 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: 463 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 833 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 310 m²/s²
0-3 km storm-relative helicity: 415 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTOP 072210 RRA
SVRTOP
KSC131-072255-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
510 PM CDT WED MAY 7 1997

* SEVERE THUNDERSTORM WARNING FOR
     NORTHERN NEMAHA COUNTY - NORTHEAST KANSAS

* UNTIL 555 PM CDT
 
* SOME LOCATIONS AFFECTED
     SABETHA
     ONEIDA

* AT 505 PM RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES WEST OF
  HIAWATHA NEAR BERN MOVING EAST AT 20 MPH.

* THE STORM WILL BE NEAR
     SABE2THA AROUND 520 PM
     ONEIDA AROUND 515 PM

* REPORTS
     DIME SIZE HAIL IN BERN AT 505 PM
 
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.

Issued	Product	Office	Counties	Lasted
May 7, 4:09 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	46 min
May 7, 4:20 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	50 min
May 7, 4:37 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Riley	48 min
May 7, 4:58 PM CDT	Tornado Warning	TOP	Ottawa	32 min
May 7, 5:19 PM CDT	Severe Thunderstorm Warning	TOP	Marshall	31 min
May 7, 5:26 PM CDT	Tornado Warning	TOP	Dickinson	44 min
May 7, 5:31 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	34 min
May 7, 5:47 PM CDT	Severe Thunderstorm Warning	TOP	Brown	48 min
May 7, 6:07 PM CDT	Tornado Warning	TOP	Dickinson	48 min
May 7, 6:43 PM CDT	Severe Thunderstorm Warning	TOP	Morris	47 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1997 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.