Alert archive / Colorado / Tornado Warnings in 2011

Tornado Warning 55, NWS Goodland, KS

September 17, 2011Kit Carson County, Colorado

NWS Goodland, KS issued this tornado warning at Sep 17, 2011, 6:13 PM MDT for Kit Carson County, Colorado. It was in force for 32 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: Sep 17, 2011, 6:13 PM MDT (00:13 UTC)
Expired: Sep 17, 2011, 6:45 PM MDT
In force: 32 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 50 km from the middle of the area, began a volume at 00:14 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 nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.2 hours before the alert went out and 109 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: 193 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1533 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -30 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.

294 
WFUS53 KGLD 180013
TORGLD
COC063-180045-
/O.NEW.KGLD.TO.W.0055.110918T0013Z-110918T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
613 PM MDT SAT SEP 17 2011

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL KIT CARSON COUNTY IN EAST CENTRAL COLORADO...

* UNTIL 645 PM MDT

* AT 610 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR BETHUNE...AND WAS MOVING SOUTHEAST AT 15    
  MPH. THE TORNADIC PORTION OF THIS STORM WILL NOT IMPACT BURLINGTON.

  IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
  GOLF BALL SIZE HAIL.   

* LOCATIONS IMPACTED INCLUDE...
  BURLINGTON.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 427 AND 440.

THIS INCLUDES HIGHWAY 385 BETWEEN MILE MARKERS 174 AND 189.

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 3923 10208 3910 10231 3928 10248 3937 10234
TIME...MOT...LOC 0012Z 310DEG 14KT 3928 10238
HAIL 1.75IN
$$

ROBINSON

1 follow-up statement

753 
WWUS53 KGLD 180038
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
638 PM MDT SAT SEP 17 2011

COC063-180049-
/O.EXP.KGLD.TO.W.0055.000000T0000Z-110918T0045Z/
KIT CARSON CO-
638 PM MDT SAT SEP 17 2011

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING.

...THE TORNADO WARNING FOR EAST CENTRAL KIT CARSON COUNTY WILL EXPIRE
AT 645 PM MDT/745 PM CDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 3923 10208 3910 10231 3928 10248 3937 10234
TIME...MOT...LOC 0039Z 310DEG 14KT 3921 10228
$$

ROBINSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 6:42 PM MDT	Special Weather Statement	GLD	Kit Carson	63 min
Sep 17, 6:51 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	39 min
Sep 17, 7:07 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	68 min
Sep 17, 7:19 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	7 min

Nearby

Tornado Warnings in Colorado, 2011 Every tornado warning in 2011 Tornadoes 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.