Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 149, NWS Goodland, KS

July 8, 2021Kit Carson County, Colorado; Sherman County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 8, 2021, 7:53 PM MDT for Kit Carson County, Colorado; Sherman County, Kansas. It was in force for 36 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 8, 2021, 7:53 PM MDT (01:53 UTC)
Expired: Jul 8, 2021, 8:29 PM MDT
In force: 36 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Kit Carson County, CO, Sherman County, KS

The radar

The Goodland radar (KGLD), 23 km from the middle of the area, began a volume at 01:54 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, 1.9 hours before the alert went out and 121 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: 468 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 3626 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

021 
WUUS53 KGLD 090153
SVRGLD
COC063-KSC181-090300-
/O.NEW.KGLD.SV.W.0149.210709T0153Z-210709T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
753 PM MDT Thu Jul 8 2021

The National Weather Service in Goodland has issued a

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

* Until 900 PM MDT.

* At 753 PM MDT, severe thunderstorms were located along a line
  extending from 7 miles southeast of Bonny Reservoir to 7 miles
  northwest of Kanorado to 3 miles northeast of Burlington, moving
  southeast at 35 mph.

  HAZARD...70 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  Kanorado around 805 PM MDT.
  Ruleton around 820 PM MDT.
  Goodland around 830 PM MDT.

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 26.
 Interstate 70 in Colorado between mile markers 438 and 450.
 Highway 385 between mile markers 187 and 196.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3958 10212 3957 10196 3933 10155 3913 10167
      3913 10198 3933 10235
TIME...MOT...LOC 0153Z 313DEG 30KT 3953 10206 3944 10210 3935 10224 

HAIL...0.75IN
WIND...70MPH
 
$$
KMK/JTL

3 follow-up statements

034 
WWUS53 KGLD 090207
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
807 PM MDT Thu Jul 8 2021

COC063-090214-
/O.CAN.KGLD.SV.W.0149.000000T0000Z-210709T0300Z/
Kit Carson CO-
807 PM MDT Thu Jul 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KIT CARSON COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3913 10199 3917 10205 3957 10205 3957 10196
      3933 10155 3913 10167
TIME...MOT...LOC 0204Z 306DEG 31KT 3951 10190 3942 10198 3939 10205 

$$

KSC181-090300-
/O.CON.KGLD.SV.W.0149.000000T0000Z-210709T0300Z/
Sherman KS-
807 PM MDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM MDT
FOR WESTERN SHERMAN COUNTY...

At 804 PM MDT, severe thunderstorms were located along a line
extending from 12 miles north of Ruleton to 3 miles north of
Kanorado, moving southeast at 35 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
  Ruleton and Goodland.

This includes Interstate 70 in Kansas between mile markers 0 and 26.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3913 10199 3917 10205 3957 10205 3957 10196
      3933 10155 3913 10167
TIME...MOT...LOC 0204Z 306DEG 31KT 3951 10190 3942 10198 3939 10205 

HAIL...0.75IN
WIND...70MPH
 
$$

Lundquist

156 
WWUS53 KGLD 090213
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
813 PM MDT Thu Jul 8 2021

KSC181-090300-
/O.CON.KGLD.SV.W.0149.000000T0000Z-210709T0300Z/
Sherman KS-
813 PM MDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM MDT
FOR WESTERN SHERMAN COUNTY...

At 813 PM MDT, a severe thunderstorm was located near Ruleton, moving
southeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Goodland, Kanorado and Ruleton. 

This includes Interstate 70 in Kansas between mile markers 0 and 26.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3919 10192 3929 10205 3939 10205 3954 10191
      3933 10155 3913 10167
TIME...MOT...LOC 0213Z 309DEG 31KT 3938 10187 

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

Lundquist

941 
WWUS53 KGLD 090229
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
829 PM MDT Thu Jul 8 2021

KSC181-090239-
/O.CAN.KGLD.SV.W.0149.000000T0000Z-210709T0300Z/
Sherman KS-
829 PM MDT Thu Jul 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN SHERMAN COUNTY 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 gusty winds are
still possible with this thunderstorm.

LAT...LON 3919 10192 3929 10205 3939 10205 3954 10191
      3933 10155 3913 10167
TIME...MOT...LOC 0227Z 313DEG 30KT 3929 10174 

$$

Lundquist

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 6:09 PM MDT	Special Weather Statement	GLD	Phillips	36 min
Jul 8, 6:47 PM MDT	Special Weather Statement	GLD	Yuma	28 min
Jul 9, 5:37 PM MDT	Special Weather Statement	GLD	Phillips	8 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2021 Severe Thunderstorm Warnings in Kansas, 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.