Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 199, NWS Goodland, KS

August 15, 2021Cheyenne County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Aug 15, 2021, 1:40 AM CDT for Cheyenne County, Kansas. It was in force for 40 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 15, 2021, 1:40 AM CDT (06:40 UTC)
Expired
Aug 15, 2021, 2:20 AM CDT
In force
40 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Damage threat
Considerable
Hail
0.75 in
Wind
70.0 mph

County Cheyenne County, KS

The radar

The Goodland radar (KGLD), 39 km from the middle of the area, began a volume at 06:43 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, 6.7 hours before the alert went out and 122 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 2021-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 666 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2021-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 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
666 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
3335 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted.

445 
WUUS53 KGLD 150640
SVRGLD
KSC023-150745-
/O.NEW.KGLD.SV.W.0199.210815T0640Z-210815T0745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
140 AM CDT Sun Aug 15 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Western Cheyenne County in northwestern Kansas...

* Until 245 AM CDT.

* At 140 AM CDT, a severe thunderstorm was located 14 miles north of
  Ruleton, moving southeast at 35 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Weather instrument at St. Francis airport.

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

* This severe thunderstorm will remain over mainly rural areas of
  western Cheyenne County in northwestern Kansas, including the
  following locations... Wheeler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3957 10204 3981 10200 3992 10184 3984 10157
      3968 10157 3957 10163
TIME...MOT...LOC 0640Z 336DEG 32KT 3955 10184 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Lundquist
2 follow-up statements
577 
WWUS53 KGLD 150651
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
151 AM CDT Sun Aug 15 2021

KSC023-150745-
/O.CON.KGLD.SV.W.0199.000000T0000Z-210815T0745Z/
Cheyenne KS-
151 AM CDT Sun Aug 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR WESTERN CHEYENNE COUNTY IN NORTHWESTERN KANSAS...

At 149 AM CDT, a severe thunderstorm was located 9 miles northwest of
Goodland, moving southeast at 35 mph.

HAZARD...70 mph wind gusts.

SOURCE...Weather instrument at St. Francis airport. At 1:35 AM CDT a 
         gust of 66 MPH was measured at the airport.

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

Locations impacted include...
St. Francis and Wheeler. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3957 10204 3981 10200 3992 10184 3984 10157
      3968 10157 3957 10163
TIME...MOT...LOC 0649Z 336DEG 32KT 3947 10179 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Lundquist
410 
WWUS53 KGLD 150720
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
220 AM CDT Sun Aug 15 2021

KSC023-150730-
/O.CAN.KGLD.SV.W.0199.000000T0000Z-210815T0745Z/
Cheyenne KS-
220 AM CDT Sun Aug 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CHEYENNE COUNTY IN
NORTHWESTERN KANSAS IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 3957 10204 3981 10200 3992 10184 3984 10157
      3968 10157 3957 10163
TIME...MOT...LOC 0718Z 336DEG 32KT 3940 10148 

$$

Lundquist

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 11:23 PM CDTSpecial Weather StatementGLDCheyenne67 min
Aug 15, 12:26 AM CDTSpecial Weather StatementGLDCheyenne34 min
Aug 15, 12:49 AM CDTSpecial Weather StatementGLDSherman26 min
Aug 15, 1:14 AM CDTSpecial Weather StatementGLDSherman31 min
Aug 15, 1:53 AM CDTSpecial Weather StatementGLDSherman37 min
Aug 15, 2:10 AM CDTSpecial Weather StatementGLDWallace35 min
Aug 15, 2:28 AM CDTSpecial Weather StatementGLDSherman32 min
Aug 15, 2:45 AM CDTSpecial Weather StatementGLDWallace30 min
Aug 15, 3:31 AM CDTSpecial Weather StatementGLDGraham29 min
Aug 15, 3:58 AM CDTSpecial Weather StatementGLDGraham32 min
Aug 15, 4:30 AM CDTSpecial Weather StatementGLDGraham30 min
Aug 15, 5:14 AM CDTFlash Flood WarningGLDGraham6 hr
Aug 15, 2:55 PM CDTSpecial Weather StatementGLDGraham20 min
Aug 15, 3:26 PM CDTSpecial Weather StatementGLDGraham19 min
Aug 15, 6:04 PM CDTSevere Thunderstorm WarningGLDGove26 min

Nearby

Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.