Alert archive / Colorado / Tornado Warnings in 2021

Tornado Warning 4, NWS Goodland, KS

April 27, 2021Kit Carson County, Colorado

NWS Goodland, KS issued this tornado warning at Apr 27, 2021, 4:40 PM MDT for Kit Carson County, Colorado. It was in force for 35 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: Apr 27, 2021, 4:40 PM MDT (22:40 UTC)
Expired: Apr 27, 2021, 5:15 PM MDT
In force: 35 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 Pueblo radar (KPUX), 122 km from the middle of the area, began a volume at 22:42 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.

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 27, 11:45 AM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.7 hours before the alert went out and 79 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3214 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

384 
WFUS53 KGLD 272240
TORGLD
COC063-272315-
/O.NEW.KGLD.TO.W.0004.210427T2240Z-210427T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Goodland KS
440 PM MDT Tue Apr 27 2021

The National Weather Service in Goodland has issued a

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

* Until 515 PM MDT.
    
* At 440 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles southeast of Arriba, or 11 miles southwest of
  Flagler, moving east at 10 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
  southwestern Kit Carson County.

This includes Interstate 70 in Colorado between mile markers 390 and
396.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 3913 10316 3917 10315 3928 10316 3932 10305
      3908 10295 3907 10316
TIME...MOT...LOC 2240Z 255DEG 10KT 3916 10318 

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

$$

Lockhart

1 follow-up statement

811 
WWUS53 KGLD 272310
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
510 PM MDT Tue Apr 27 2021

COC063-272319-
/O.EXP.KGLD.TO.W.0004.000000T0000Z-210427T2315Z/
Kit Carson CO-
510 PM MDT Tue Apr 27 2021

...THE TORNADO WARNING FOR SOUTHWESTERN KIT CARSON COUNTY WILL EXPIRE
AT 515 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 700 PM MDT for
east central Colorado.

LAT...LON 3913 10316 3917 10315 3928 10316 3932 10305
      3908 10295 3907 10316
TIME...MOT...LOC 2309Z 255DEG 10KT 3918 10308 

$$

Lockhart

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 2:06 AM MDT	Severe Thunderstorm Warning	GLD	Yuma	39 min
Apr 27, 2:42 AM MDT	Severe Thunderstorm Warning	GLD	Yuma	33 min
Apr 27, 3:58 PM MDT	Special Weather Statement	GLD	Cheyenne	62 min
Apr 27, 4:03 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	57 min
Apr 27, 4:06 PM MDT	Tornado Warning	GLD	Cheyenne	24 min
Apr 27, 4:22 PM MDT	Special Weather Statement	GLD	Kit Carson	38 min
Apr 27, 4:31 PM MDT	Tornado Warning Tornado observed	GLD	Cheyenne	29 min
Apr 27, 4:47 PM MDT	Tornado Warning	GLD	Kit Carson, Yuma	43 min
Apr 27, 4:57 PM MDT	Special Weather Statement	GLD	Kit Carson	48 min
Apr 27, 5:02 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	32 min
Apr 27, 5:16 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	29 min
Apr 27, 5:28 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson, Yuma	26 min
Apr 27, 5:33 PM MDT	Special Weather Statement	GLD	Cheyenne	42 min
Apr 27, 5:40 PM MDT	Special Weather Statement	GLD	Phillips	35 min
Apr 27, 5:53 PM MDT	Special Weather Statement	GLD	Kit Carson, Yuma	67 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.