Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Goodland, KS

April 14, 2012Norton County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Apr 14, 2012, 8:30 PM CDT for Norton County, Kansas. It was in force for 17 min. 2 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: Apr 14, 2012, 8:30 PM CDT (01:30 UTC)
Expired: Apr 14, 2012, 8:47 PM CDT
In force: 17 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

County Norton County, KS

The radar

The Grand Island radar (KUEX), 117 km from the middle of the area, began a volume at 01:31 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 14, 8:33 PM CDT	HAIL 1.75	Almena, KS
Apr 14, 8:41 PM CDT	HAIL 1	5 Ne Almena, 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 14, 5:24 PM CDT	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.5 hours before the alert went out and 237 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: 2712 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: 369 m²/s²
0-3 km storm-relative helicity: 445 m²/s²
Significant tornado parameter: 6.0
Supercell composite: 30.6

Open this sounding in Storm Lab

The text

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

975 
WUUS53 KGLD 150130
SVRGLD
KSC137-150230-
/O.NEW.KGLD.SV.W.0013.120415T0130Z-120415T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
830 PM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN NORTON COUNTY IN NORTHWEST KANSAS...

* UNTIL 930 PM CDT

* AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED NEAR CALVERT...AND WAS MOVING NORTHEAST AT
  50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ALMENA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

&&

LAT...LON 3980 9963 3978 9990 4000 9982 4000 9963
      4000 9962
TIME...MOT...LOC 0130Z 214DEG 45KT 3984 9971
WIND...HAIL <50MPH 1.50IN
$$

MENTZER

3 follow-up statements

385 
WWUS53 KGLD 150136
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
736 PM MDT SAT APR 14 2012

KSC137-150230-
/O.CON.KGLD.SV.W.0013.000000T0000Z-120415T0230Z/
NORTON KS-
836 PM CDT SAT APR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
NORTON COUNTY UNTIL 930 PM CDT...

AT 833 PM CDT...A TRAINED SPOTTER REPORTED GOLFBALL SIZED HAIL IN 
ALMENA. THE STORM THAT PRODUCED THE HAIL WAS MOVING NORTHEAST AT 40 
MPH. 

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF NORTHEASTERN NORTON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

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

&&

LAT...LON 3980 9963 3980 9968 3984 9985 4000 9979
      4000 9962
TIME...MOT...LOC 0135Z 198DEG 31KT 3990 9970
WIND...HAIL <50MPH 1.75IN
$$

MENTZER

107 
WWUS53 KGLD 150142
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
742 PM MDT SAT APR 14 2012

KSC137-150230-
/O.CON.KGLD.SV.W.0013.000000T0000Z-120415T0230Z/
NORTON KS-
842 PM CDT SAT APR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
NORTON COUNTY UNTIL 930 PM CDT...

AT 837 PM CDT...A SEVERE THUNDERSTORM WAS PRODUCING PING PONG BALL 
SIZE HAIL. THIS STORM WAS LOCATED NEAR ALMENA...AND WAS MOVING NORTH 
AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF NORTHEASTERN NORTON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

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

&&

LAT...LON 3988 9964 3987 9970 3990 9977 3999 9977
      4000 9962
TIME...MOT...LOC 0142Z 198DEG 31KT 3996 9967
WIND...HAIL <50MPH 1.50IN
$$

MENTZER

643 
WWUS53 KGLD 150147
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
747 PM MDT SAT APR 14 2012

KSC137-150157-
/O.CAN.KGLD.SV.W.0013.000000T0000Z-120415T0230Z/
NORTON KS-
847 PM CDT SAT APR 14 2012

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 3988 9964 3987 9970 3990 9977 3999 9977
      4000 9962
TIME...MOT...LOC 0147Z 198DEG 31KT 4000 9965
$$

MENTZER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:48 PM CDT	Severe Thunderstorm Warning	GLD	Graham	27 min
Apr 14, 8:11 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Norton	49 min
Apr 15, 3:46 AM CDT	High Wind Warning	GLD	Cheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 2 more	15 hr
Apr 15, 3:46 AM CDT	Wind Advisory	GLD	Gove, Greeley, Logan, Wallace, Wichita	15 hr
Apr 15, 2:43 PM CDT	Frost Advisory	GLD	Cheyenne, Decatur, Gove, Graham, Greeley, Logan and 7 more	18 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.