Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 208, NWS Goodland, KS

August 19, 2021Thomas County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Aug 19, 2021, 7:02 PM CDT for Thomas County, Kansas. It was in force for 58 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: Aug 19, 2021, 7:02 PM CDT (00:02 UTC)
Expired: Aug 19, 2021, 8:00 PM CDT
In force: 58 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

County Thomas County, KS

The radar

The Goodland radar (KGLD), 36 km from the middle of the area, began a volume at 00:06 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 19, 2:14 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 19, 6:25 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.0 hours before the alert went out and 178 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: 56 J/kg
Mixed-layer CIN: -210 J/kg
Mixed-layer LCL: 1497 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

355 
WUUS53 KGLD 200002
SVRGLD
KSC193-200100-
/O.NEW.KGLD.SV.W.0208.210820T0002Z-210820T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
702 PM CDT Thu Aug 19 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Southwestern Thomas County in northwestern Kansas...

* Until 800 PM CDT.

* At 702 PM CDT, a severe thunderstorm was located 10 miles south of
  Brewster, moving northeast at 20 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* This severe thunderstorm will be near...
  Levant around 745 PM CDT.

This includes Interstate 70 in Kansas between mile markers 37 and 56.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

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

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

&&

LAT...LON 3919 10139 3926 10139 3948 10134 3939 10096
      3916 10130
TIME...MOT...LOC 0002Z 202DEG 17KT 3921 10137 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

KMK/JRM

4 follow-up statements

780 
WWUS53 KGLD 200010
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
710 PM CDT Thu Aug 19 2021

KSC193-200100-
/O.CON.KGLD.SV.W.0208.000000T0000Z-210820T0100Z/
Thomas KS-
710 PM CDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHWESTERN THOMAS COUNTY...

At 710 PM CDT, a severe thunderstorm was located 8 miles south of
Brewster, moving north at 20 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
  Levant.

This includes Interstate 70 in Kansas between mile markers 37 and 56.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

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

&&

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

LAT...LON 3922 10139 3926 10139 3948 10134 3939 10096
      3918 10127
TIME...MOT...LOC 0010Z 202DEG 17KT 3925 10135 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

KMK/JRM

723 
WWUS53 KGLD 200012
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
712 PM CDT Thu Aug 19 2021

KSC193-200100-
/O.CON.KGLD.SV.W.0208.000000T0000Z-210820T0100Z/
Thomas KS-
712 PM CDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHWESTERN THOMAS COUNTY...

At 710 PM CDT, a severe thunderstorm was located 8 miles south of
Brewster, moving north at 20 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
  Levant.

This includes Interstate 70 in Kansas between mile markers 37 and 56.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

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

&&

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

LAT...LON 3922 10139 3926 10139 3948 10134 3939 10096
      3918 10127
TIME...MOT...LOC 0010Z 202DEG 17KT 3925 10135 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

KMK/JRM

454 
WWUS53 KGLD 200028
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
728 PM CDT Thu Aug 19 2021

KSC193-200100-
/O.CON.KGLD.SV.W.0208.000000T0000Z-210820T0100Z/
Thomas KS-
728 PM CDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHWESTERN THOMAS COUNTY...

At 727 PM CDT, a severe thunderstorm was located 4 miles southeast of
Brewster, moving northeast 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.

Locations impacted include...
Colby and Levant. 

This includes Interstate 70 in Kansas between mile markers 38 and 56.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

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

&&

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

LAT...LON 3925 10137 3948 10134 3939 10096 3920 10124
TIME...MOT...LOC 0027Z 205DEG 17KT 3933 10131 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KMK/JRM

569 
WWUS53 KGLD 200040
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
740 PM CDT Thu Aug 19 2021

KSC193-200100-
/O.CON.KGLD.SV.W.0208.000000T0000Z-210820T0100Z/
Thomas KS-
740 PM CDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR WEST CENTRAL THOMAS COUNTY...

At 740 PM CDT, a severe thunderstorm was located 4 miles west of
Levant, moving north 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.

Locations impacted include...
Colby and Levant. 

This includes Interstate 70 in Kansas between mile markers 38 and 56.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

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

&&

A Tornado Watch remains in effect until midnight CDT for northwestern
Kansas.

LAT...LON 3929 10136 3948 10134 3939 10096 3924 10118
TIME...MOT...LOC 0040Z 202DEG 17KT 3939 10128 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KMK/JRM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:01 PM CDT	Special Weather Statement	GLD	Thomas	44 min
Aug 20, 6:34 AM CDT	Dense Fog Advisory	GLD	Cheyenne, Sherman	3 hr

Nearby

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.