Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 47, NWS Goodland, KS

May 15, 2021Cheyenne County, Kit Carson County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at May 15, 2021, 10:05 PM MDT for Cheyenne County, Kit Carson County, Colorado. It was in force for 20 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: May 15, 2021, 10:05 PM MDT (04:05 UTC)
Expired: May 15, 2021, 10:25 PM MDT
In force: 20 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Cheyenne County, CO, Kit Carson County, CO

The radar

The Goodland radar (KGLD), 87 km from the middle of the area, began a volume at 04:09 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, 4.1 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: 841 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 973 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

985 
WUUS53 KGLD 160405
SVRGLD
COC017-063-160445-
/O.NEW.KGLD.SV.W.0047.210516T0405Z-210516T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
1005 PM MDT Sat May 15 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  North central Cheyenne County in east central Colorado...
  South central Kit Carson County in east central Colorado...

* Until 1045 PM MDT.

* At 1005 PM MDT, a severe thunderstorm was located 16 miles
  northeast of Kit Carson, or 19 miles northwest of Cheyenne Wells,
  moving northeast at 15 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will remain over mainly rural areas of
  north central Cheyenne and south central Kit Carson Counties in
  east central Colorado.

This includes Highway 385 between mile markers 163 and 164.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3886 10267 3902 10278 3919 10248 3901 10230
TIME...MOT...LOC 0405Z 243DEG 13KT 3898 10265 

HAIL...1.00IN
WIND...<50MPH
 
$$

JN

1 follow-up statement

801 
WWUS53 KGLD 160425
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1025 PM MDT Sat May 15 2021

COC017-063-160435-
/O.CAN.KGLD.SV.W.0047.000000T0000Z-210516T0445Z/
Cheyenne CO-Kit Carson CO-
1025 PM MDT Sat May 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CHEYENNE AND
SOUTH CENTRAL KIT CARSON COUNTIES 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.  However small hail and
heavy rain are still possible with this thunderstorm.

LAT...LON 3886 10267 3902 10278 3919 10248 3901 10230
TIME...MOT...LOC 0423Z 243DEG 13KT 3901 10256 

$$

JN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 9:28 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	12 min
May 15, 9:43 PM MDT	Special Weather Statement	GLD	Cheyenne	62 min
May 15, 10:39 PM MDT	Special Weather Statement	GLD	Kit Carson	51 min
May 16, 4:41 PM MDT	Special Weather Statement	GLD	Cheyenne	64 min
May 16, 5:15 PM MDT	Special Weather Statement	GLD	Kit Carson	30 min
May 16, 5:21 PM MDT	Tornado Warning	GLD	Cheyenne	24 min
May 16, 5:25 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	35 min
May 16, 5:30 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	45 min
May 16, 5:44 PM MDT	Special Weather Statement	GLD	Kit Carson	61 min
May 16, 5:46 PM MDT	Flash Flood Warning	GLD	Kit Carson	3 hr
May 16, 5:58 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	62 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.