Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 65, NWS Wichita, KS

April 30, 2012Harper County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Apr 30, 2012, 7:39 PM CDT for Harper County, Kansas. It was in force for 66 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 30, 2012, 7:39 PM CDT (00:39 UTC)
Expired: Apr 30, 2012, 8:45 PM CDT
In force: 66 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Harper County, KS

The radar

The Vance AFB radar (KVNX), 40 km from the middle of the area, began a volume at 00:42 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 30, 8:01 PM CDT	HAIL 1	12 W Anthony, 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
Apr 30, 7:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 0.7 hours before the alert went out and 78 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: 2077 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1205 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 16.5

Open this sounding in Storm Lab

The text

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

802 
WUUS53 KICT 010039
SVRICT
KSC077-010145-
/O.NEW.KICT.SV.W.0065.120501T0039Z-120501T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WICHITA KS
739 PM CDT MON APR 30 2012

THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A

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

* UNTIL 845 PM CDT

* AT 737 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR AMORITA...
  AND MOVING NORTH AT 35 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...
  ANTHONY...WALDRON...BLUFF CITY...ATTICA...HARPER...CORWIN...CRYSTAL
  SPRINGS...FREEPORT...DANVILLE AND RUNNYMEDE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3701 9834 3738 9834 3738 9781 3700 9781
      3701 9800 3699 9802 3699 9835
TIME...MOT...LOC 0040Z 200DEG 31KT 3699 9823

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

$$

SMITH

2 follow-up statements

655 
WWUS53 KICT 010058
SVSICT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
758 PM CDT MON APR 30 2012

KSC077-010145-
/O.CON.KICT.SV.W.0065.000000T0000Z-120501T0145Z/
HARPER KS-
758 PM CDT MON APR 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR HARPER COUNTY
UNTIL 845 PM CDT...

AT 756 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES SOUTHEAST
OF ATTICA...AND MOVING NORTH AT 35 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...
ANTHONY...ATTICA...HARPER...CRYSTAL SPRINGS...FREEPORT...DANVILLE AND
RUNNYMEDE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3701 9834 3738 9834 3738 9781 3700 9781
      3701 9800 3699 9802 3699 9835
TIME...MOT...LOC 0058Z 200DEG 31KT 3719 9818

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

$$

JAKUB

270 
WWUS53 KICT 010112
SVSICT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
812 PM CDT MON APR 30 2012

KSC077-010145-
/O.CON.KICT.SV.W.0065.000000T0000Z-120501T0145Z/
HARPER KS-
812 PM CDT MON APR 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR HARPER COUNTY
UNTIL 845 PM CDT...

AT 810 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTH OF
ATTICA...AND MOVING NORTHEAST AT 30 MPH.

HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

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

LOCATIONS IMPACTED INCLUDE...
ANTHONY...ATTICA...BLUFF CITY...HARPER...CRYSTAL SPRINGS...
RUNNYMEDE...DANVILLE AND FREEPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3701 9834 3738 9834 3738 9781 3700 9781
      3701 9800 3699 9802 3699 9835
TIME...MOT...LOC 0112Z 217DEG 24KT 3713 9823

HAIL...1.75IN
WIND...60 MPH

$$

JAKUB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 8:08 PM CDT	Severe Thunderstorm Warning	ICT	Kingman	67 min
Apr 30, 8:17 PM CDT	Tornado Warning	ICT	Kingman	26 min
Apr 30, 8:19 PM CDT	Tornado Warning	ICT	Harper	56 min
Apr 30, 8:33 PM CDT	Severe Thunderstorm Warning	ICT	Chautauqua	14 min
Apr 30, 8:45 PM CDT	Special Weather Statement	ICT	Kingman	45 min
Apr 30, 8:47 PM CDT	Severe Thunderstorm Warning	ICT	Labette	43 min
Apr 30, 9:11 PM CDT	Severe Thunderstorm Warning	ICT	Labette, Montgomery	47 min
Apr 30, 9:12 PM CDT	Severe Thunderstorm Warning	ICT	Labette, Neosho	63 min
Apr 30, 9:15 PM CDT	Tornado Warning	ICT	Harper	15 min
Apr 30, 9:23 PM CDT	Severe Thunderstorm Warning	ICT	Chautauqua, Elk	46 min
Apr 30, 9:52 PM CDT	Areal Flood Warning	ICT	Labette, Montgomery	12 hr
Apr 30, 9:53 PM CDT	Special Weather Statement	ICT	Sedgwick	67 min
Apr 30, 9:56 PM CDT	Special Weather Statement	ICT	Neosho	64 min
Apr 30, 10:08 PM CDT	Severe Thunderstorm Warning	ICT	Labette	51 min
Apr 30, 10:13 PM CDT	Severe Thunderstorm Warning	ICT	Allen, Neosho	29 min
Apr 30, 10:14 PM CDT	Severe Thunderstorm Warning	ICT	Butler, Cowley, Sedgwick, Sumner	61 min
Apr 30, 10:29 PM CDT	Severe Thunderstorm Warning	ICT	Harper, Sumner	26 min
Apr 30, 10:51 PM CDT	Special Weather Statement	ICT	Greenwood	54 min
Apr 30, 10:53 PM CDT	Areal Flood Warning	ICT	Chautauqua	12 hr
Apr 30, 11:06 PM CDT	Special Weather Statement	ICT	Elk	54 min
Apr 30, 11:11 PM CDT	Special Weather Statement	ICT	Cowley	64 min
Apr 30, 11:19 PM CDT	Special Weather Statement	ICT	Labette	26 min
May 1, 12:05 AM CDT	Special Weather Statement	ICT	Labette	25 min
May 1, 12:16 AM CDT	Special Weather Statement	ICT	Labette, Montgomery	44 min
May 1, 12:59 AM CDT	Special Weather Statement	ICT	Labette	31 min
May 1, 1:22 AM CDT	Severe Thunderstorm Warning	ICT	Labette	25 min
May 1, 6:20 AM CDT	Special Weather Statement	ICT	Chase, Marion	25 min
May 1, 6:50 AM CDT	Severe Thunderstorm Warning	ICT	Marion	27 min
May 1, 8:55 AM CDT	River Flood Warning	ICT	Montgomery, Wilson	6 hr
May 1, 9:54 AM CDT	Areal Flood Warning	ICT	Chautauqua, Labette, Montgomery	6 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.