Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Goodland, KS

April 27, 2021Cheyenne County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Apr 27, 2021, 5:02 PM MDT for Cheyenne County, Colorado. It was in force for 32 min. 1 report 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 27, 2021, 5:02 PM MDT (23:02 UTC)
Expired: Apr 27, 2021, 5:34 PM MDT
In force: 32 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 112 km from the middle of the area, began a volume at 23:04 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 27, 5:03 PM MDT	TSTM WND GST 60	3 Se Kit Carson, CO	TRAINED SPOTTER REPORTED 60 MPH WINDS THAT LASTED 2 MINUTES IN DURATION.

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

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.0 hours before the alert went out and 113 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.

836 
WUUS53 KGLD 272302
SVRGLD
COC017-272345-
/O.NEW.KGLD.SV.W.0005.210427T2302Z-210427T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
502 PM MDT Tue Apr 27 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Western Cheyenne County in east central Colorado...

* Until 545 PM MDT.

* At 502 PM MDT, a severe thunderstorm was located 6 miles west of
  Kit Carson, or 30 miles west of Cheyenne Wells, moving northeast at
  25 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Kit Carson around 515 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This thunderstorm will produce damaging winds resulting in areas of
near zero visibility in blowing dirt. Use extreme caution if you must
travel and be alert for rapidly changing visibility.

&&

LAT...LON 3904 10272 3884 10247 3864 10295 3878 10307
      3904 10315
TIME...MOT...LOC 2302Z 232DEG 20KT 3878 10291 

HAIL...0.88IN
WIND...60MPH
 
$$

Lockhart

2 follow-up statements

086 
WWUS53 KGLD 272305
SVSGLD

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

COC017-272345-
/O.CON.KGLD.SV.W.0005.000000T0000Z-210427T2345Z/
Cheyenne CO-
505 PM MDT Tue Apr 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR WESTERN CHEYENNE COUNTY IN EAST CENTRAL COLORADO...

At 504 PM MDT, a severe thunderstorm was located 5 miles west of Kit
Carson, or 29 miles west of Cheyenne Wells, moving northeast at 25
mph.

HAZARD...60 mph wind gusts.

SOURCE...Trained weather spotters.

IMPACT...Expect damage to roofs, siding, and trees.

This severe storm will be near...
  Kit Carson around 515 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This thunderstorm will produce damaging winds resulting in areas of
near zero visibility in blowing dirt. Use extreme caution if you must
travel and be alert for rapidly changing visibility.

&&

LAT...LON 3904 10272 3884 10247 3864 10295 3878 10307
      3904 10315
TIME...MOT...LOC 2304Z 232DEG 20KT 3879 10289 

HAIL...<.75IN
WIND...60MPH
 
$$

Lockhart

556 
WWUS53 KGLD 272334
SVSGLD

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

COC017-272344-
/O.CAN.KGLD.SV.W.0005.000000T0000Z-210427T2345Z/
Cheyenne CO-
534 PM MDT Tue Apr 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CHEYENNE COUNTY IN
EAST CENTRAL COLORADO IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

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

LAT...LON 3904 10272 3884 10247 3864 10295 3878 10307
      3904 10315
TIME...MOT...LOC 2333Z 232DEG 20KT 3889 10272 

$$

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, 4:40 PM MDT	Tornado Warning	GLD	Kit Carson	35 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, 5:16 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

Severe Thunderstorm Warnings in Colorado, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.