Alert archive / Colorado / Tornado Warnings in 2021

Tornado Warning 39, NWS Goodland, KS

July 9, 2021Kit Carson County, Colorado

NWS Goodland, KS issued this tornado warning at Jul 9, 2021, 8:56 PM MDT for Kit Carson County, Colorado. It was in force for 21 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: Jul 9, 2021, 8:56 PM MDT (02:56 UTC)
Expired: Jul 9, 2021, 9:17 PM MDT
In force: 21 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 90 km from the middle of the area, began a volume at 03:00 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.

Issued	Product	Office	Lasted
Jul 9, 8:37 PM MDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.9 hours before the alert went out and 89 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: 807 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 3619 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

347 
WFUS53 KGLD 100256
TORGLD
COC063-100330-
/O.NEW.KGLD.TO.W.0039.210710T0256Z-210710T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Goodland KS
856 PM MDT Fri Jul 9 2021

The National Weather Service in Goodland has issued a

* Tornado Warning for...
  South central Kit Carson County in east central Colorado...

* Until 930 PM MDT.

* At 856 PM MDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located 8
  miles south of Vona, or 10 miles southeast of Seibert, moving east
  at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  south central Kit Carson County.

This includes Interstate 70 in Colorado between mile markers 424 and
426.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3910 10289 3925 10284 3929 10248 3914 10248
TIME...MOT...LOC 0256Z 263DEG 29KT 3918 10275 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Lundquist

3 follow-up statements

462 
WWUS53 KGLD 100305
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
905 PM MDT Fri Jul 9 2021

COC063-100330-
/O.CON.KGLD.TO.W.0039.000000T0000Z-210710T0330Z/
Kit Carson CO-
905 PM MDT Fri Jul 9 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR SOUTH
CENTRAL KIT CARSON COUNTY...

At 905 PM MDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located 9 miles
southwest of Bethune, or 10 miles southeast of Stratton, moving east
at 85 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
south central Kit Carson County.

This includes Interstate 70 in Colorado near mile marker 426.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3910 10289 3920 10276 3929 10248 3914 10248
TIME...MOT...LOC 0305Z 257DEG 73KT 3918 10250 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Lundquist

735 
WWUS53 KGLD 100312
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
912 PM MDT Fri Jul 9 2021

COC063-100330-
/O.CON.KGLD.TO.W.0039.000000T0000Z-210710T0330Z/
Kit Carson CO-
912 PM MDT Fri Jul 9 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR SOUTH
CENTRAL KIT CARSON COUNTY...

At 912 PM MDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located 11
miles southeast of Stratton, moving east at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
south central Kit Carson County.

This includes Interstate 70 in Colorado near mile marker 426.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3912 10272 3921 10274 3929 10248 3914 10248
TIME...MOT...LOC 0312Z 270DEG 39KT 3916 10252 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Lundquist

913 
WWUS53 KGLD 100317
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
917 PM MDT Fri Jul 9 2021

COC063-100327-
/O.CAN.KGLD.TO.W.0039.000000T0000Z-210710T0330Z/
Kit Carson CO-
917 PM MDT Fri Jul 9 2021

...THE TORNADO WARNING FOR SOUTH CENTRAL KIT CARSON COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 100 AM MDT for
east central Colorado.

LAT...LON 3912 10272 3921 10274 3929 10248 3914 10248
TIME...MOT...LOC 0315Z 263DEG 29KT 3917 10247 

$$

Lundquist

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:01 PM MDT	Special Weather Statement	GLD	Kit Carson	14 min
Jul 9, 7:17 PM MDT	Special Weather Statement	GLD	Kit Carson	28 min
Jul 9, 7:46 PM MDT	Special Weather Statement	GLD	Kit Carson	14 min
Jul 9, 7:50 PM MDT	Special Weather Statement	GLD	Cheyenne	25 min
Jul 9, 7:56 PM MDT	Special Weather Statement	GLD	Kit Carson	19 min
Jul 9, 8:03 PM MDT	Special Weather Statement	GLD	Kit Carson	27 min
Jul 9, 8:23 PM MDT	Special Weather Statement	GLD	Kit Carson	37 min
Jul 9, 8:51 PM MDT	Special Weather Statement	GLD	Cheyenne	24 min
Jul 9, 9:01 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	44 min
Jul 10, 12:23 AM MDT	Special Weather Statement	GLD	Yuma	37 min
Jul 10, 1:15 AM MDT	Special Weather Statement	GLD	Kit Carson	45 min
Jul 10, 1:47 AM MDT	Special Weather Statement	GLD	Cheyenne	43 min

Nearby

Tornado Warnings in Colorado, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.