Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 224, NWS Goodland, KS

August 26, 2021Decatur County, Rawlins County, Kansas; Hitchcock County, Red Willow County, Nebraska

NWS Goodland, KS issued this severe thunderstorm warning at Aug 26, 2021, 8:17 PM CDT for Decatur County, Rawlins County, Kansas; Hitchcock County, Red Willow County, Nebraska. It was in force for 31 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 26, 2021, 8:17 PM CDT (01:17 UTC)
Expired: Aug 26, 2021, 8:48 PM CDT
In force: 31 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Decatur County, KS, Rawlins County, KS, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 134 km from the middle of the area, began a volume at 01:17 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.3 hours before the alert went out and 120 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: 2762 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1515 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 383 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 29.2

Open this sounding in Storm Lab

The text

As transmitted.

070 
WUUS53 KGLD 270117
SVRGLD
KSC039-153-NEC087-145-270215-
/O.NEW.KGLD.SV.W.0224.210827T0117Z-210827T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
817 PM CDT Thu Aug 26 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Northeastern Rawlins County in northwestern Kansas...
  Northern Decatur County in northwestern Kansas...
  Red Willow County in southwestern Nebraska...
  Eastern Hitchcock County in southwestern Nebraska...

* Until 915 PM CDT.

* At 817 PM CDT, a severe thunderstorm was located 8 miles southwest
  of McCook, moving northeast at 25 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Trained weather spotters.

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

* This severe thunderstorm will be near...
  McCook around 835 PM CDT.

Other locations in the path of this severe thunderstorm include
Indianola and Bartley.

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 4000 10019 4000 10018 3994 10018 3980 10086
      4035 10116 4035 10020
TIME...MOT...LOC 0117Z 246DEG 22KT 4010 10070 

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

$$

024

1 follow-up statement

973 
WWUS53 KGLD 270148
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
848 PM CDT Thu Aug 26 2021

KSC039-153-NEC087-145-270158-
/O.CAN.KGLD.SV.W.0224.000000T0000Z-210827T0215Z/
Rawlins KS-Decatur KS-Red Willow NE-Hitchcock NE-
848 PM CDT Thu Aug 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RAWLINS...
NORTHERN DECATUR...RED WILLOW AND EASTERN HITCHCOCK COUNTIES 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 4000 10019 4000 10018 3994 10018 3980 10086
      4035 10116 4035 10020
TIME...MOT...LOC 0145Z 246DEG 22KT 4018 10047 

$$

024

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 7:02 PM CDT	Special Weather Statement	GLD	Thomas	28 min
Aug 26, 7:07 PM CDT	Special Weather Statement	GLD	Sherman	23 min
Aug 26, 7:13 PM CDT	Special Weather Statement	GLD	Wallace	32 min
Aug 26, 7:26 PM CDT	Special Weather Statement	GLD	Rawlins	34 min
Aug 26, 7:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Cheyenne, Rawlins, Sherman, Thomas	60 min
Aug 26, 8:05 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Decatur, Rawlins	40 min
Aug 27, 4:42 PM CDT	Special Weather Statement	GLD	Sheridan	18 min
Aug 27, 5:21 PM CDT	Special Weather Statement	GLD	Gove	24 min
Aug 27, 6:07 PM CDT	Special Weather Statement	GLD	Gove	23 min

Nearby

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