Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 217, NWS Goodland, KS

August 25, 2021Thomas County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Aug 25, 2021, 8:58 PM CDT for Thomas County, Kansas. It was in force for 34 min. 2 reports 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
Aug 25, 2021, 8:58 PM CDT (01:58 UTC)
Expired
Aug 25, 2021, 9:32 PM CDT
In force
34 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), 42 km from the middle of the area, began a volume at 01:59 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
Aug 25, 9:00 PM CDTHAIL 11 Sw Levant, KSOFF-DUTY NWS EMPLOYEE REPORTED QUARTER SIZED HAIL THAT LASTED FOR A 10 MINUTE DURATION.
Aug 25, 9:04 PM CDTTSTM WND GST 5810 Wsw Mingo, KSREPORTED VIA WEATHER UNDERGROUND STATION KKSCOLBY28.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.0 hours before the alert went out and 183 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 2021-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 515 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 2021-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
515 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
2368 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
197 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

370 
WUUS53 KGLD 260158
SVRGLD
KSC193-260245-
/O.NEW.KGLD.SV.W.0217.210826T0158Z-210826T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
858 PM CDT Wed Aug 25 2021

The National Weather Service in Goodland has issued a

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

* Until 945 PM CDT.

* At 857 PM CDT, a severe thunderstorm was located 7 miles north of
  Winona, or 14 miles south of Levant, moving north at 25 mph.

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

  SOURCE...Trained weather spotters.

  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 and Colby.

This includes Interstate 70 in Kansas between mile markers 37 and 60.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm will produce damaging winds resulting in areas of
near zero visibility in blowing dirt. Use extreme caution if you must
travel and be alert for rapidly changing visibility.

&&

LAT...LON 3914 10136 3915 10136 3957 10139 3957 10088
      3913 10103
TIME...MOT...LOC 0157Z 189DEG 23KT 3917 10123 

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

$$

024
1 follow-up statement
888 
WWUS53 KGLD 260232
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
932 PM CDT Wed Aug 25 2021

KSC193-260241-
/O.CAN.KGLD.SV.W.0217.000000T0000Z-210826T0245Z/
Thomas KS-
932 PM CDT Wed Aug 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR THOMAS 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 3914 10136 3915 10136 3957 10139 3957 10088
      3913 10103
TIME...MOT...LOC 0228Z 189DEG 23KT 3939 10119 

$$

024

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 7:00 PM CDTSpecial Weather StatementGLDLogan30 min
Aug 25, 7:17 PM CDTSevere Thunderstorm WarningGLDLogan, Wallace, Wichita43 min
Aug 25, 7:57 PM CDTSevere Thunderstorm Warning Considerable damage threatGLDLogan, Sherman, Thomas, Wallace63 min
Aug 25, 9:38 PM CDTSpecial Weather StatementGLDThomas37 min
Aug 25, 9:53 PM CDTSpecial Weather StatementGLDSheridan37 min
Aug 25, 10:21 PM CDTSpecial Weather StatementGLDSheridan24 min
Aug 25, 10:43 PM CDTSpecial Weather StatementGLDDecatur32 min
Aug 25, 11:16 PM CDTSpecial Weather StatementGLDDecatur29 min
Aug 25, 11:45 PM CDTSpecial Weather StatementGLDNorton30 min
Aug 26, 4:16 PM CDTSpecial Weather StatementGLDCheyenne, Sherman29 min
Aug 26, 4:45 PM CDTSpecial Weather StatementGLDCheyenne, Sherman60 min
Aug 26, 5:41 PM CDTSpecial Weather StatementGLDRawlins34 min
Aug 26, 6:06 PM CDTSevere Thunderstorm WarningGLDCheyenne, Rawlins, Sherman, Thomas39 min
Aug 26, 6:07 PM CDTSpecial Weather StatementGLDWallace23 min
Aug 26, 6:16 PM CDTSevere Thunderstorm Warning Considerable damage threatGLDSherman, Thomas, Wallace44 min
Aug 26, 6:28 PM CDTSpecial Weather StatementGLDSherman32 min
Aug 26, 6:35 PM CDTSpecial Weather StatementGLDCheyenne40 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.