Alert archive / Kansas / Tornado Warnings in 2011

Tornado Warning 44, NWS Goodland, KS

June 20, 2011Decatur County, Sheridan County, Kansas

NWS Goodland, KS issued this tornado warning at Jun 20, 2011, 7:36 PM CDT for Decatur County, Sheridan County, Kansas. It was in force for 14 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 20, 2011, 7:36 PM CDT (00:36 UTC)
Expired
Jun 20, 2011, 7:50 PM CDT
In force
14 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon

Counties Decatur County, KS, Sheridan County, KS

The radar

The Goodland radar (KGLD), 121 km from the middle of the area, began a volume at 00:37 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 20, 1:00 PM CDTTornado Watch PDSSPC10 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 171 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, N. Platte/Lee Bi, NE at 00:00Z on 2011-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 109 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2011-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.193958Sfc1 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
109 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
471 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

661 
WFUS53 KGLD 210036
TORGLD
KSC039-179-210130-
/O.NEW.KGLD.TO.W.0044.110621T0036Z-110621T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
736 PM CDT MON JUN 20 2011

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN DECATUR COUNTY IN NORTHWEST KANSAS...
  NORTHEASTERN SHERIDAN COUNTY IN NORTHWEST KANSAS...

* UNTIL 830 PM CDT

* AT 733 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR JENNINGS...AND WAS MOVING SOUTH AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JENNINGS...DRESDEN AND LEOVILLE.

THIS INCLUDES HIGHWAY 36 BETWEEN MILE MARKERS 82 AND 98.

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 3944 10018 3945 10055 3986 10050 3983 10019
TIME...MOT...LOC 0037Z 003DEG 11KT 3971 10031
HAIL 1.00IN
$$

ROBINSON
1 follow-up statement
016 
WWUS53 KGLD 210050
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
650 PM MDT MON JUN 20 2011

KSC039-179-210100-
/O.CAN.KGLD.TO.W.0044.000000T0000Z-110621T0130Z/
SHERIDAN KS-DECATUR KS-
750 PM CDT MON JUN 20 2011

...THE TORNADO WARNING FOR SOUTHEASTERN DECATUR AND NORTHEASTERN
SHERIDAN COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THIS THUNDERSTORM.

LAT...LON 3944 10018 3945 10055 3986 10050 3983 10019
TIME...MOT...LOC 0050Z 003DEG 11KT 3967 10031
$$

ROBINSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 7:02 PM CDTAreal Flood WarningGLDCheyenne, Logan, Rawlins, Sherman, Thomas, Wallace10 hr
Jun 20, 7:10 PM CDTTornado WarningGLDDecatur65 min
Jun 20, 8:16 PM CDTSpecial Weather StatementGLDDecatur, Sheridan29 min
Jun 20, 9:01 PM CDTAreal Flood WarningGLDGove, Logan, Sheridan, Thomas8 hr
Jun 21, 12:50 AM CDTAreal Flood WarningGLDDecatur, Norton, Rawlins, Sheridan4 hr
Jun 21, 3:47 AM CDTWind AdvisoryGLDCheyenne, Decatur, Gove, Graham, Greeley, Logan and 7 more15 hr

Nearby

Tornado Warnings in Kansas, 2011Every tornado warning in 2011Tornadoes in 2011

Sources

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