Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 157, NWS Goodland, KS

July 16, 2021Kit Carson County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 16, 2021, 5:34 PM MDT for Kit Carson County, Colorado. It was in force for 56 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 16, 2021, 5:34 PM MDT (23:34 UTC)
Expired
Jul 16, 2021, 6:30 PM MDT
In force
56 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.75 in
Wind
60.0 mph

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 66 km from the middle of the area, began a volume at 23:38 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 12:00Z, 11.6 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2021-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2021-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2659 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

485 
WUUS53 KGLD 162334
SVRGLD
COC063-170030-
/O.NEW.KGLD.SV.W.0157.210716T2334Z-210717T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
534 PM MDT Fri Jul 16 2021

The National Weather Service in Goodland has issued a

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

* Until 630 PM MDT.

* At 534 PM MDT, a severe thunderstorm was located 11 miles north of
  Bethune, or 11 miles northeast of Stratton, and is nearly
  stationary.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  north central Kit Carson County.

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 3957 10236 3940 10231 3935 10256 3957 10264
TIME...MOT...LOC 2334Z 154DEG 3KT 3946 10250 

HAIL...1.75IN
WIND...60MPH
 
$$

JN
1 follow-up statement
622 
WWUS53 KGLD 162353
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
553 PM MDT Fri Jul 16 2021

COC063-170030-
/O.CON.KGLD.SV.W.0157.000000T0000Z-210717T0030Z/
Kit Carson CO-
553 PM MDT Fri Jul 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR NORTH CENTRAL KIT CARSON COUNTY...

At 553 PM MDT, a severe thunderstorm was located 12 miles north of
Bethune, or 12 miles northeast of Stratton, and is nearly stationary.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of north
central Kit Carson County.

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 3952 10236 3940 10231 3935 10256 3948 10256
TIME...MOT...LOC 2353Z 154DEG 3KT 3947 10251 

HAIL...1.75IN
WIND...60MPH
 
$$

JN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 10:20 PM MDTDense Fog AdvisoryGLDKit Carson, Yuma11 hr
Jul 16, 4:15 PM MDTSpecial Weather StatementGLDKit Carson30 min
Jul 16, 4:44 PM MDTSpecial Weather StatementGLDYuma46 min
Jul 16, 5:02 PM MDTSpecial Weather StatementGLDCheyenne28 min
Jul 16, 5:29 PM MDTFlash Flood WarningGLDKit Carson87 min
Jul 16, 5:37 PM MDTSpecial Weather StatementGLDCheyenne23 min
Jul 16, 5:39 PM MDTFlash Flood WarningGLDCheyenne58 min
Jul 16, 5:42 PM MDTSevere Thunderstorm WarningGLDCheyenne14 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2021Every 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.