Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 41, NWS Topeka, KS

April 15, 20124 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 15, 2012, 1:51 AM CDT for 4 counties in Kansas. It was in force for 34 min. 1 report 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
Apr 15, 2012, 1:51 AM CDT (06:51 UTC)
Expired
Apr 15, 2012, 2:25 AM CDT
In force
34 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.75 in
Wind
50.0 mph

Counties Jackson County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS

The radar

The Topeka radar (KTWX), 65 km from the middle of the area, began a volume at 06:54 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

TimeReportWhereRemark
Apr 15, 1:55 AM CDTHAIL 2.75Lillis, KSTIME ESTIMATED BY RADAR. DELAYED REPORT

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.

IssuedProductOfficeLasted
Apr 14, 5:24 PM CDTTornado Watch PDSSPC9 hr
Apr 15, 1:37 AM CDTTornado WatchSPC5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 6.9 hours before the alert went out and 72 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-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1788 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1788 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
443 m²/s²
Significant tornado parameter
5.2
Supercell composite
17.0

Open this sounding in Storm Lab

The text

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

317 
WUUS53 KTOP 150651
SVRTOP
KSC085-117-131-149-150730-
/O.NEW.KTOP.SV.W.0041.120415T0651Z-120415T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
151 AM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL JACKSON COUNTY IN NORTHEAST KANSAS...
  SOUTHEASTERN MARSHALL COUNTY IN NORTHEAST KANSAS...
  SOUTHERN NEMAHA COUNTY IN NORTHEAST KANSAS...
  NORTHEASTERN POTTAWATOMIE COUNTY IN NORTHEAST KANSAS...

* UNTIL 230 AM CDT

* AT 149 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LILLIS...AND
  MOVING NORTHEAST AT 50 MPH.

  HAZARD...GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES...ROOFS AND WINDOWS.

* LOCATIONS IMPACTED INCLUDE...
  HAVENSVILLE...CENTRALIA...SOLDIER...CORNING...CIRCLEVILLE...GOFF...
  WETMORE AND WOODLAWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3947 9579 3933 9644 3966 9643 3989 9579
TIME...MOT...LOC 0651Z 242DEG 42KT 3957 9621

HAIL...1.75IN
WIND...<50 MPH

$$

BARJENBRUCH
3 follow-up statements
543 
WWUS53 KTOP 150707
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
207 AM CDT SUN APR 15 2012

KSC117-150717-
/O.CAN.KTOP.SV.W.0041.000000T0000Z-120415T0730Z/
MARSHALL KS-
207 AM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARSHALL COUNTY
IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3937 9627 3957 9625 3957 9624 3968 9623
      3985 9579 3947 9579
TIME...MOT...LOC 0707Z 243DEG 39KT 3971 9602 3942 9616

$$

KSC085-131-149-150730-
/O.CON.KTOP.SV.W.0041.000000T0000Z-120415T0730Z/
POTTAWATOMIE KS-NEMAHA KS-JACKSON KS-
207 AM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
JACKSON...SOUTHERN NEMAHA AND NORTHEASTERN POTTAWATOMIE COUNTIES
UNTIL 230 AM CDT...

AT 203 AM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM CORNING TO 6 MILES SOUTH OF ONAGA...AND MOVING
NORTHEAST AT 45 MPH.

HAZARD...HALF DOLLAR SIZE HAIL.

SOURCE...EMERGENCY MANAGEMENT.

IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.

LOCATIONS IMPACTED INCLUDE...
ONEGA...CORNING...HAVENSVILLE...GOFF...WOODLAWN...SOLDIER...CIRCLEVILLE
LE...AND WETMORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3937 9627 3957 9625 3957 9624 3968 9623
      3985 9579 3947 9579
TIME...MOT...LOC 0707Z 243DEG 39KT 3971 9602 3942 9616

HAIL...1.25IN
WIND...<50 MPH

$$

BARJENBRUCH
624 
WWUS53 KTOP 150721
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
221 AM CDT SUN APR 15 2012

KSC149-150730-
/O.CAN.KTOP.SV.W.0041.000000T0000Z-120415T0730Z/
POTTAWATOMIE KS-
221 AM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN POTTAWATOMIE
COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA. ANOTHER SEVERE STORM WAS STILL ONGOING IN NORTHWEST 
POTTAWATOMIE COUNTY.

LAT...LON 3947 9579 3942 9603 3955 9603 3971 9607
      3980 9579
TIME...MOT...LOC 0720Z 243DEG 39KT 3972 9595 3950 9593

$$

KSC085-131-150730-
/O.CON.KTOP.SV.W.0041.000000T0000Z-120415T0730Z/
NEMAHA KS-JACKSON KS-
221 AM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
JACKSON AND SOUTHEASTERN NEMAHA COUNTIES UNTIL 230 AM CDT...

AT 217 AM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM CORNING TO SOLDIER...AND MOVING NORTHEAST AT 45
MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
         DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

LOCATIONS IMPACTED INCLUDE...
GOFF...CIRCLEVILLE AND WETMORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3947 9579 3942 9603 3955 9603 3971 9607
      3980 9579
TIME...MOT...LOC 0720Z 243DEG 39KT 3972 9595 3950 9593

HAIL...1.00IN
WIND...60 MPH

$$

BARJENBRUCH
970 
WWUS53 KTOP 150725
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
225 AM CDT SUN APR 15 2012

KSC085-131-150735-
/O.CAN.KTOP.SV.W.0041.000000T0000Z-120415T0730Z/
NEMAHA KS-JACKSON KS-
225 AM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JACKSON AND
SOUTHEASTERN NEMAHA COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THESE
THUNDERSTORMS.

IN ADDITION...A TORNADO WATCH REMAINS IN EFFECT.

LAT...LON 3947 9579 3942 9603 3955 9603 3971 9607
      3980 9579
TIME...MOT...LOC 0725Z 243DEG 39KT 3974 9588 3952 9587

$$

BARJENBRUCH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 7:24 PM CDTTornado Warning Tornado observedTOPClay, Dickinson51 min
Apr 14, 8:01 PM CDTTornado Warning Tornado observedTOPClay, Riley29 min
Apr 14, 8:43 PM CDTTornado Warning Tornado observedTOPDickinson, Morris47 min
Apr 14, 9:22 PM CDTTornado WarningTOPGeary, Morris, Wabaunsee38 min
Apr 14, 11:08 PM CDTTornado WarningTOPDickinson37 min
Apr 14, 11:31 PM CDTSevere Thunderstorm WarningTOPOttawa29 min
Apr 14, 11:36 PM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Geary, Riley20 min
Apr 14, 11:48 PM CDTTornado Warning Tornado observedTOPLyon42 min
Apr 15, 12:00 AM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Ottawa45 min
Apr 15, 12:41 AM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Geary, Riley49 min
Apr 15, 12:47 AM CDTTornado WarningTOPClay, Dickinson, Geary, Riley28 min
Apr 15, 12:52 AM CDTSevere Thunderstorm WarningTOPBrown, Marshall, Nemaha, Pottawatomie38 min
Apr 15, 1:15 AM CDTTornado Warning Tornado observedTOPPottawatomie, Riley15 min
Apr 15, 1:30 AM CDTTornado WarningTOPMarshall, Nemaha, Pottawatomie30 min
Apr 15, 1:38 AM CDTSevere Thunderstorm WarningTOPClay, Riley, Washington37 min
Apr 15, 2:13 AM CDTSevere Thunderstorm WarningTOPMarshall, Pottawatomie, Riley24 min
Apr 15, 3:15 AM CDTSpecial Weather StatementTOPWabaunsee15 min
Apr 15, 3:24 AM CDTWind AdvisoryTOPAnderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more17 hr
Apr 15, 3:30 AM CDTSpecial Weather StatementTOPJackson, Shawnee30 min
Apr 15, 3:59 AM CDTSpecial Weather StatementTOPJefferson31 min
Apr 15, 4:13 AM CDTAreal Flood WarningTOPNemaha3 hr
Apr 15, 4:22 AM CDTRiver Flood WarningTOPRiley15 hr
Apr 15, 5:06 AM CDTSpecial Weather StatementTOPAnderson, Coffey, Douglas, Franklin, Osage54 min
Apr 15, 7:40 AM CDTAreal Flood AdvisoryTOPClay, Dickinson, Ottawa2 hr
Apr 15, 7:53 AM CDTRiver Flood WarningTOPClay7 hr
Apr 15, 8:32 AM CDTRiver Flood WarningTOPMarshall7 hr
Apr 15, 9:29 AM CDTRiver Flood WarningTOPCloud4 hr
Apr 15, 9:45 AM CDTAreal Flood WarningTOPClay3 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2012Every 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.