Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 61, NWS Goodland, KS

May 23, 2021Cheyenne County, Kit Carson County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at May 23, 2021, 5:59 PM MDT for Cheyenne County, Kit Carson County, Colorado. It was in force for 61 min. 2 reports 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: May 23, 2021, 5:59 PM MDT (23:59 UTC)
Expired: May 23, 2021, 7:00 PM MDT
In force: 61 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Cheyenne County, CO, Kit Carson County, CO

The radar

The Goodland radar (KGLD), 98 km from the middle of the area, began a volume at 00:04 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
May 23, 6:45 PM MDT	TSTM WND GST 52	4 E Stratton, CO	MESONET STATION STN01 4.5 E STRATTON 2.
May 23, 6:45 PM MDT	TSTM WND GST 60	2 Nw Stratton, CO	ESTIMATED WINDS OF 50-60 MPH ALONG WITH PEA SIZE HAIL.

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
May 23, 12:06 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 12.0 hours before the alert went out and 95 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: 1106 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

132 
WUUS53 KGLD 232359
SVRGLD
COC017-063-240100-
/O.NEW.KGLD.SV.W.0061.210523T2359Z-210524T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
559 PM MDT Sun May 23 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cheyenne County in east central Colorado...
  Southwestern Kit Carson County in east central Colorado...

* Until 700 PM MDT.

* At 559 PM MDT, a severe thunderstorm was located 17 miles south of
  Seibert, moving northeast at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Vona and Stratton.

This includes Interstate 70 in Colorado between mile markers 403 and
424.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM MDT for east central
Colorado.

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

&&

A Tornado Watch remains in effect until 800 PM MDT for east central
Colorado.

LAT...LON 3886 10277 3888 10305 3940 10288 3942 10244
TIME...MOT...LOC 2359Z 207DEG 31KT 3904 10285 

HAIL...1.25IN
WIND...60MPH
 
$$

024

1 follow-up statement

025 
WWUS53 KGLD 240017
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
617 PM MDT Sun May 23 2021

COC017-063-240100-
/O.CON.KGLD.SV.W.0061.000000T0000Z-210524T0100Z/
Cheyenne CO-Kit Carson CO-
617 PM MDT Sun May 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR NORTHWESTERN CHEYENNE AND SOUTH CENTRAL KIT CARSON COUNTIES IN
EAST CENTRAL COLORADO...

At 617 PM MDT, a severe thunderstorm was located 11 miles south of
Vona, or 12 miles southeast of Seibert, moving northeast at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Stratton and Vona. 

This includes Interstate 70 in Colorado between mile markers 406 and
424.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM MDT for east central
Colorado.

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

&&

A Tornado Watch remains in effect until 800 PM MDT for east central
Colorado.

LAT...LON 3889 10275 3890 10301 3940 10282 3942 10244
TIME...MOT...LOC 0017Z 209DEG 35KT 3913 10276 

HAIL...1.25IN
WIND...60MPH
 
$$

024

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:46 PM MDT	Special Weather Statement	GLD	Yuma	14 min
May 22, 10:36 PM MDT	Special Weather Statement	GLD	Cheyenne	24 min
May 22, 10:43 PM MDT	Special Weather Statement	GLD	Cheyenne, Kit Carson	32 min
May 23, 4:47 PM MDT	Special Weather Statement	GLD	Cheyenne	13 min
May 23, 5:01 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	29 min
May 23, 5:05 PM MDT	Special Weather Statement	GLD	Cheyenne	25 min
May 23, 5:21 PM MDT	Tornado Warning	GLD	Cheyenne, Kit Carson	24 min
May 23, 5:26 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	34 min
May 23, 5:40 PM MDT	Special Weather Statement	GLD	Cheyenne	20 min
May 23, 5:49 PM MDT	Special Weather Statement	GLD	Kit Carson	26 min
May 23, 5:52 PM MDT	Special Weather Statement	GLD	Cheyenne	23 min
May 23, 5:57 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	33 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.