Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 162, NWS Goodland, KS

July 18, 2021Norton County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 18, 2021, 11:07 AM CDT for Norton County, Kansas. It was in force for 23 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 18, 2021, 11:07 AM CDT (16:07 UTC)
Expired: Jul 18, 2021, 11:30 AM CDT
In force: 23 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Norton County, KS

The radar

The Goodland radar (KGLD), 148 km from the middle of the area, began a volume at 16:06 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 4.1 hours before the alert went out and 169 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: 781 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 958 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 227 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

671 
WUUS53 KGLD 181607
SVRGLD
KSC137-181630-
/O.NEW.KGLD.SV.W.0162.210718T1607Z-210718T1630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
1107 AM CDT Sun Jul 18 2021

The National Weather Service in Goodland has issued a

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

* Until 1130 AM CDT.

* At 1107 AM CDT, a severe thunderstorm was located near Clayton, or
  15 miles southwest of Norton, moving south at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Lenora around 1120 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3957 9986 3957 10018 3984 10018 3984 10003
TIME...MOT...LOC 1607Z 341DEG 31KT 3970 10013 

HAIL...1.25IN
WIND...60MPH
 
$$

Lundquist

1 follow-up statement

968 
WWUS53 KGLD 181625
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1125 AM CDT Sun Jul 18 2021

KSC137-181634-
/O.EXP.KGLD.SV.W.0162.000000T0000Z-210718T1630Z/
Norton KS-
1125 AM CDT Sun Jul 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NORTON COUNTY
WILL EXPIRE AT 1130 AM CDT...
                
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 will be allowed to expire.  However small hail
and gusty winds to 55 MPH are still possible with this thunderstorm.

LAT...LON 3957 9986 3957 10018 3984 10018 3984 10003
TIME...MOT...LOC 1624Z 341DEG 31KT 3958 10007 

$$

Lundquist

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 8:27 AM CDT	Dense Fog Advisory	GLD	Graham, Norton	93 min
Jul 18, 8:46 AM CDT	Special Weather Statement	GLD	Norton	14 min
Jul 18, 9:01 AM CDT	Special Weather Statement	GLD	Norton	14 min
Jul 18, 10:20 AM CDT	Severe Thunderstorm Warning	GLD	Decatur	55 min
Jul 18, 10:55 AM CDT	Severe Thunderstorm Warning	GLD	Decatur	50 min
Jul 18, 11:23 AM CDT	Special Weather Statement	GLD	Graham, Sheridan	22 min
Jul 18, 11:45 AM CDT	Special Weather Statement	GLD	Graham	15 min
Jul 18, 11:49 AM CDT	Special Weather Statement	GLD	Decatur	26 min
Jul 18, 11:57 AM CDT	Special Weather Statement	GLD	Graham	18 min
Jul 18, 12:13 PM CDT	Special Weather Statement	GLD	Sheridan	17 min
Jul 18, 12:15 PM CDT	Special Weather Statement	GLD	Graham	15 min
Jul 18, 12:24 PM CDT	Special Weather Statement	GLD	Gove	21 min
Jul 18, 1:07 PM CDT	Special Weather Statement	GLD	Sherman	23 min
Jul 18, 1:17 PM CDT	Severe Thunderstorm Warning	GLD	Sherman	58 min
Jul 18, 1:32 PM CDT	Special Weather Statement	GLD	Wallace	13 min
Jul 18, 1:33 PM CDT	Severe Thunderstorm Warning	GLD	Sherman	46 min
Jul 18, 1:40 PM CDT	Severe Thunderstorm Warning	GLD	Wallace	46 min
Jul 18, 2:10 PM CDT	Special Weather Statement	GLD	Greeley	20 min
Jul 18, 2:18 PM CDT	Severe Thunderstorm Warning	GLD	Greeley	57 min
Jul 18, 2:47 PM CDT	Severe Thunderstorm Warning	GLD	Greeley	58 min
Jul 18, 3:19 PM CDT	Special Weather Statement	GLD	Cheyenne	26 min
Jul 18, 3:50 PM CDT	Special Weather Statement	GLD	Cheyenne	25 min
Jul 18, 4:01 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne	44 min
Jul 18, 4:25 PM CDT	Special Weather Statement	GLD	Rawlins	20 min

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.