Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 147, NWS Goodland, KS

July 4, 2021Kit Carson County, Colorado; Sherman County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 4, 2021, 8:05 PM MDT for Kit Carson County, Colorado; Sherman County, Kansas. It was in force for 55 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
Jul 4, 2021, 8:05 PM MDT (02:05 UTC)
Expired
Jul 4, 2021, 9:00 PM MDT
In force
55 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Kit Carson County, CO, Sherman County, KS

The radar

The Goodland radar (KGLD), 36 km from the middle of the area, began a volume at 02:07 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

TimeReportWhereRemark
Jul 4, 8:32 PM MDTTSTM WND GST 714 S Burlington, CO

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.

IssuedProductOfficeLasted
Jul 4, 3:01 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.1 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-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2021-07-05Temperature 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 00:00Z on 2021-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -65 square meters per square second.193958Sfc1 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
2682 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-65 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

506 
WUUS53 KGLD 050205
SVRGLD
COC063-KSC181-050300-
/O.NEW.KGLD.SV.W.0147.210705T0205Z-210705T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
805 PM MDT Sun Jul 4 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Southeastern Kit Carson County in east central Colorado...
  West central Sherman County in northwestern Kansas...

* Until 900 PM MDT.

* At 803 PM MDT, a severe thunderstorm was located 5 miles southwest
  of Kanorado, moving southwest at 25 mph.

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

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Burlington around 815 PM MDT.

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 7.
 Interstate 70 in Colorado between mile markers 434 and 450.
 Highway 385 between mile markers 181 and 193.

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 3943 10205 3933 10190 3908 10217 3935 10240
TIME...MOT...LOC 0203Z 050DEG 21KT 3929 10213 

HAIL...1.00IN
WIND...60MPH
 
$$

AW
2 follow-up statements
262 
WWUS53 KGLD 050229
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
829 PM MDT Sun Jul 4 2021

KSC181-050238-
/O.CAN.KGLD.SV.W.0147.000000T0000Z-210705T0300Z/
Sherman KS-
829 PM MDT Sun Jul 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL SHERMAN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

LAT...LON 3935 10206 3922 10205 3908 10217 3931 10237
TIME...MOT...LOC 0228Z 049DEG 19KT 3922 10224 

$$

COC063-050300-
/O.CON.KGLD.SV.W.0147.000000T0000Z-210705T0300Z/
Kit Carson CO-
829 PM MDT Sun Jul 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM MDT
FOR SOUTHEASTERN KIT CARSON COUNTY...

At 828 PM MDT, a severe thunderstorm was located 6 miles south of
Burlington, moving southwest at 20 mph.

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

SOURCE...Radar indicated.

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

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

This includes the following highways...
 Interstate 70 in Colorado between mile markers 434 and 449.
 Highway 385 between mile markers 181 and 189.

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 3935 10206 3922 10205 3908 10217 3931 10237
TIME...MOT...LOC 0228Z 049DEG 19KT 3922 10224 

HAIL...1.00IN
WIND...60MPH
 
$$

AW
085 
WWUS53 KGLD 050256
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
856 PM MDT Sun Jul 4 2021

COC063-050305-
/O.EXP.KGLD.SV.W.0147.000000T0000Z-210705T0300Z/
Kit Carson CO-
856 PM MDT Sun Jul 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KIT CARSON COUNTY
WILL EXPIRE AT 900 PM MDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Goodland.

Remember, a Severe Thunderstorm Warning still remains in effect for 
southeastern Kit Carson County and northeastern Cheyenne County 
until 930 PM MDT.

LAT...LON 3935 10206 3922 10205 3908 10217 3931 10237
TIME...MOT...LOC 0255Z 050DEG 21KT 3913 10237 

$$

AW

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 6:23 PM MDTSpecial Weather StatementGLDLincoln37 min
Jul 4, 8:45 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson45 min
Jul 4, 9:30 PM MDTSpecial Weather StatementGLDCheyenne30 min
Jul 4, 6:01 PM MDTSpecial Weather StatementGLDLogan14 min
Jul 4, 6:16 PM MDTSpecial Weather StatementGLDLogan14 min
Jul 4, 6:31 PM MDTSpecial Weather StatementGLDLogan29 min
Jul 4, 6:37 PM MDTSpecial Weather StatementGLDWichita38 min
Jul 4, 6:52 PM MDTSpecial Weather StatementGLDSherman38 min
Jul 4, 7:09 PM MDTSpecial Weather StatementGLDGreeley36 min
Jul 4, 8:08 PM MDTSpecial Weather StatementGLDGreeley22 min

Nearby

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