Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 4, NWS Topeka, KS

February 28, 2012Lyon County, Morris County, Wabaunsee County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Feb 28, 2012, 8:28 PM CST for Lyon County, Morris County, Wabaunsee County, Kansas. It was in force for 47 min. 5 reports 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: Feb 28, 2012, 8:28 PM CST (02:28 UTC)
Expired: Feb 28, 2012, 9:15 PM CST
In force: 47 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Lyon County, KS, Morris County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 34 km from the middle of the area, began a volume at 02:28 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
Feb 28, 8:55 PM CST	HAIL 1	Ese Eskridge, KS	35-45 MPH WINDS
Feb 28, 9:02 PM CST	TSTM WND DMG	Sw Harveyville, KS	LARGE TREES REPORTED DOWN ON HOME. TIME ESTIMATED
Feb 28, 9:02 PM CST	TORNADO	Harveyville, KS	PRELIMINARY INFORMATION FROM INCIDENT COMMAND...POSSIBLE TORNADO...1 CRITICAL INJURY...SEVERAL MINOR INJURIES...NUMEROUS HOMES DESTROYED...ALL PEOPLE ACCOUNTED FOR IN TOWN...DAMAGE SURVEY PLANNED WEDNESDAY FOR ADDITIONAL INFORMATION
Feb 28, 9:03 PM CST	TSTM WND DMG	Harveyville, KS	HEAVY STRUCTURAL DAMAGE TO HOMES AND CHURCH BUILDING IN HARVEYVILLE DUE TO POSSIBLE TORNADO. REPORTS OF PEOPLE TRAPPED IN STRUCTURES. TIME ESTIMATED BASED ON RADAR.
Feb 28, 9:04 PM CST	HAIL 0.75	5 Nnw Harveyville, KS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 28, 3:53 PM CST	Tornado Watch	SPC	5 hr
Feb 28, 8:10 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.5 hours before the alert went out and 68 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: 37 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 427 m²/s²
0-3 km storm-relative helicity: 451 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

092 
WUUS53 KTOP 290228
SVRTOP
KSC111-127-197-290315-
/O.NEW.KTOP.SV.W.0004.120229T0228Z-120229T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
828 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LYON COUNTY IN EAST CENTRAL KANSAS...
  EASTERN MORRIS COUNTY IN EAST CENTRAL KANSAS...
  SOUTHERN WABAUNSEE COUNTY IN EAST CENTRAL KANSAS...

* UNTIL 915 PM CST

* AT 823 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 3
  MILES SOUTHWEST OF COUNCIL GROVE...MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  COUNCIL GROVE...
  DUNLAP...
  BUSHONG...
  ALLEN...
  ADMIRE...
  ESKRIDGE...
  HARVEYVILLE...

THIS INCLUDES THE KANSAS TURNPIKE BETWEEN MILE MARKERS 148 AND 155.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. IF A TORNADO IS SPOTTED
ACT QUICKLY AND MOVE TO A BASEMENT OR SMALL INTERIOR ROOM.

PREPARE FOR LARGE HAIL...DAMAGING WINDS AND VERY HEAVY RAIN IF YOU
ARE IN THE PATH OF THIS STORM. FOR YOUR SAFETY...TAKE COVER INSIDE A
BUILDING NOW.

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

&&

LAT...LON 3852 9659 3874 9662 3897 9620 3892 9595
      3869 9595 3852 9640
TIME...MOT...LOC 0228Z 244DEG 44KT 3864 9645
WIND...HAIL 60MPH 1.25IN

$$

BLAIR

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:04 PM CST	Tornado Warning	TOP	Republic	20 min
Feb 28, 6:50 PM CST	Special Weather Statement	TOP	Ottawa	25 min
Feb 28, 7:16 PM CST	Severe Thunderstorm Warning	TOP	Clay, Cloud, Washington	44 min
Feb 28, 7:41 PM CST	Special Weather Statement	TOP	Republic	34 min
Feb 28, 7:57 PM CST	Tornado Warning	TOP	Morris	33 min
Feb 28, 8:11 PM CST	Special Weather Statement	TOP	Marshall	34 min
Feb 28, 8:17 PM CST	Special Weather Statement	TOP	Washington	28 min
Feb 28, 8:48 PM CST	Special Weather Statement	TOP	Marshall	27 min
Feb 28, 9:03 PM CST	Severe Thunderstorm Warning	TOP	Osage, Shawnee	42 min
Feb 28, 9:21 PM CST	Severe Thunderstorm Warning	TOP	Douglas, Jefferson	39 min
Feb 28, 9:53 PM CST	Severe Thunderstorm Warning	TOP	Douglas, Franklin, Osage, Shawnee	36 min
Feb 28, 9:58 PM CST	Severe Thunderstorm Warning	TOP	Anderson, Coffey, Franklin	47 min
Feb 28, 10:10 PM CST	Tornado Warning	TOP	Douglas	14 min
Feb 29, 4:10 AM CST	Red Flag Warning	TOP	Anderson, Coffey, Dickinson, Lyon, Morris, Ottawa	14 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.