Alert archive / Kansas / Tornado Warnings in 2012

Tornado Warning 20, NWS Topeka, KS

April 27, 2012Cloud County, Kansas

NWS Topeka, KS issued this tornado warning at Apr 27, 2012, 4:23 PM CDT for Cloud County, Kansas. It was in force for 37 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 27, 2012, 4:23 PM CDT (21:23 UTC)
Expired: Apr 27, 2012, 5:00 PM CDT
In force: 37 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Cloud County, KS

The radar

The Grand Island radar (KUEX), 119 km from the middle of the area, began a volume at 21:24 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
Apr 27, 4:38 PM CDT	TORNADO	4 Wnw Aurora, KS	BRIEF TOUCHDOWN REPORTED.

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
Apr 27, 2:11 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 9.4 hours before the alert went out and 178 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1420 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 272 m²/s²
0-3 km storm-relative helicity: 417 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.

161 
WFUS53 KTOP 272123
TORTOP
KSC029-272200-
/O.NEW.KTOP.TO.W.0020.120427T2123Z-120427T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
423 PM CDT FRI APR 27 2012

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* TORNADO WARNING FOR...
  CLOUD COUNTY IN NORTH CENTRAL KANSAS...

* UNTIL 500 PM CDT

* AT 419 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR DELPHOS...AND MOVING NORTHEAST AT 35 MPH.

  HAZARD...DEVELOPING TORNADO AND GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...SIGNIFICANT HOUSE AND BUILDING DAMAGE POSSIBLE. MOBILE
           HOMES COMPLETELY DESTROYED IF HIT. SOME TREES UPROOTED OR
           SNAPPED. VEHICLES WILL LIKELY BE THROWN BY TORNADIC WINDS.

* LOCATIONS IMPACTED INCLUDE...
  AURORA AND CONCORDIA AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3958 9764 3951 9737 3930 9759 3931 9788
TIME...MOT...LOC 2123Z 220DEG 30KT 3935 9770

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

PHILLIPS

1 follow-up statement

624 
WWUS53 KTOP 272138
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
438 PM CDT FRI APR 27 2012

KSC029-272200-
/O.CON.KTOP.TO.W.0020.000000T0000Z-120427T2200Z/
CLOUD KS-
438 PM CDT FRI APR 27 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN CLOUD COUNTY UNTIL
500 PM CDT...

AT 433 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 6 MILES SOUTHWEST OF AURORA...AND MOVING NORTHEAST AT 40
MPH.

HAZARD...DEVELOPING TORNADO AND PING PONG BALL SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...SIGNIFICANT HOUSE AND BUILDING DAMAGE POSSIBLE. MOBILE HOMES
         COMPLETELY DESTROYED IF HIT. SOME TREES UPROOTED OR SNAPPED.
         VEHICLES WILL LIKELY BE THROWN BY TORNADIC WINDS.

LOCATIONS IMPACTED INCLUDE...
AURORA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3936 9757 3935 9780 3946 9773 3957 9762
      3951 9737
TIME...MOT...LOC 2138Z 224DEG 33KT 3945 9758

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

PHILLIPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 4:55 AM CDT	Special Weather Statement	TOP	Douglas	35 min
Apr 27, 10:39 AM CDT	Special Weather Statement	TOP	Shawnee	36 min
Apr 27, 3:44 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	46 min
Apr 27, 4:06 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	39 min
Apr 27, 4:09 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Dickinson, Ottawa	42 min
Apr 27, 4:47 PM CDT	Severe Thunderstorm Warning	TOP	Clay	21 min
Apr 27, 4:49 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson, Geary	56 min
Apr 27, 4:53 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic, Washington	17 min
Apr 27, 5:16 PM CDT	Tornado Warning	TOP	Clay, Cloud, Washington	29 min
Apr 27, 5:29 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Riley	18 min
Apr 27, 5:40 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Morris, Wabaunsee	50 min
Apr 27, 5:56 PM CDT	Special Weather Statement	TOP	Riley	34 min
Apr 27, 6:27 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage, Shawnee, Wabaunsee	33 min
Apr 27, 6:47 PM CDT	Severe Thunderstorm Warning	TOP	Jefferson, Shawnee	43 min
Apr 27, 6:51 PM CDT	Tornado Warning	TOP	Osage, Shawnee	24 min

Nearby

Tornado Warnings in Kansas, 2012 Every tornado warning in 2012 Tornadoes 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.