Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 170, NWS Goodland, KS

July 18, 2021Greeley County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 18, 2021, 1:47 PM MDT for Greeley County, Kansas. It was in force for 58 min. 1 report 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: Jul 18, 2021, 1:47 PM MDT (19:47 UTC)
Expired: Jul 18, 2021, 2:45 PM MDT
In force: 58 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Greeley County, KS

The radar

The Goodland radar (KGLD), 107 km from the middle of the area, began a volume at 19:51 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

Time	Report	Where	Remark
Jul 18, 2:10 PM MDT	HAIL 1	14 Wsw Horace, KS	CALLER REPORTED DIME TO SPORADIC QUARTER SIZED HAIL.

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 12:00Z, 7.8 hours before the alert went out and 194 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: 2 J/kg
Mixed-layer CIN: -396 J/kg
Mixed-layer LCL: 2164 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

234 
WUUS53 KGLD 181947
SVRGLD
KSC071-182045-
/O.NEW.KGLD.SV.W.0170.210718T1947Z-210718T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
147 PM MDT Sun Jul 18 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Southwestern Greeley County in west central Kansas...

* Until 245 PM MDT.

* At 146 PM MDT, a severe thunderstorm was located 7 miles east of
  Towner, or 10 miles west of Tribune, moving southwest at 10 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  southwestern Greeley County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3853 10204 3858 10190 3839 10174 3826 10203
      3826 10204
TIME...MOT...LOC 1946Z 052DEG 8KT 3849 10195 

HAIL...1.50IN
WIND...60MPH
 
$$

Lundquist

5 follow-up statements

849 
WWUS53 KGLD 181955
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
155 PM MDT Sun Jul 18 2021

KSC071-182045-
/O.CON.KGLD.SV.W.0170.000000T0000Z-210718T2045Z/
Greeley KS-
155 PM MDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR SOUTHWESTERN GREELEY COUNTY...

At 155 PM MDT, a severe thunderstorm was located 6 miles east of
Towner, or 11 miles west of Tribune, moving southwest at 10 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southwestern Greeley County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3848 10204 3855 10191 3839 10178 3826 10203
      3826 10204
TIME...MOT...LOC 1955Z 043DEG 9KT 3845 10197 

HAIL...1.50IN
WIND...60MPH
 
$$

Lundquist

839 
WWUS53 KGLD 182007
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
207 PM MDT Sun Jul 18 2021

KSC071-182045-
/O.CON.KGLD.SV.W.0170.000000T0000Z-210718T2045Z/
Greeley KS-
207 PM MDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR SOUTHWESTERN GREELEY COUNTY...

At 207 PM MDT, a severe thunderstorm was located 5 miles southeast of
Towner, or 13 miles west of Tribune, moving southwest at 10 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southwestern Greeley County.

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 3848 10204 3848 10192 3838 10179 3826 10203
      3826 10204
TIME...MOT...LOC 2007Z 047DEG 9KT 3841 10200 

HAIL...2.00IN
WIND...60MPH
 
$$

Lundquist

758 
WWUS53 KGLD 182015
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
215 PM MDT Sun Jul 18 2021

KSC071-182045-
/O.CON.KGLD.SV.W.0170.000000T0000Z-210718T2045Z/
Greeley KS-
215 PM MDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR SOUTHWESTERN GREELEY COUNTY...

At 215 PM MDT, a severe thunderstorm was located 6 miles southeast of
Towner, or 14 miles west of Tribune, moving southwest at 10 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southwestern Greeley County.

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 3847 10204 3847 10193 3837 10181 3826 10203
      3826 10204
TIME...MOT...LOC 2015Z 049DEG 8KT 3840 10201 

HAIL...1.75IN
WIND...60MPH
 
$$

Lundquist

902 
WWUS53 KGLD 182025
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
225 PM MDT Sun Jul 18 2021

KSC071-182045-
/O.CON.KGLD.SV.W.0170.000000T0000Z-210718T2045Z/
Greeley KS-
225 PM MDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR SOUTHWESTERN GREELEY COUNTY...

At 225 PM MDT, a severe thunderstorm was located 10 miles south of
Towner, or 16 miles southwest of Tribune, moving south at 15 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southwestern Greeley County.

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 3843 10204 3843 10193 3835 10185 3826 10203
      3826 10204
TIME...MOT...LOC 2025Z 014DEG 15KT 3833 10201 

HAIL...1.75IN
WIND...60MPH
 
$$

Lundquist

438 
WWUS53 KGLD 182041
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
241 PM MDT Sun Jul 18 2021

KSC071-182051-
/O.EXP.KGLD.SV.W.0170.000000T0000Z-210718T2045Z/
Greeley KS-
241 PM MDT Sun Jul 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN GREELEY COUNTY
WILL EXPIRE AT 245 PM MDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

LAT...LON 3843 10204 3843 10193 3835 10185 3826 10203
      3826 10204
TIME...MOT...LOC 2041Z 052DEG 8KT 3832 10203 

$$

Lundquist

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:27 AM MDT	Dense Fog Advisory	GLD	Graham, Norton	93 min
Jul 18, 7:46 AM MDT	Special Weather Statement	GLD	Norton	14 min
Jul 18, 8:01 AM MDT	Special Weather Statement	GLD	Norton	14 min
Jul 18, 9:20 AM MDT	Severe Thunderstorm Warning	GLD	Decatur	55 min
Jul 18, 9:55 AM MDT	Severe Thunderstorm Warning	GLD	Decatur	50 min
Jul 18, 10:07 AM MDT	Severe Thunderstorm Warning	GLD	Norton	23 min
Jul 18, 10:23 AM MDT	Special Weather Statement	GLD	Graham, Sheridan	22 min
Jul 18, 10:45 AM MDT	Special Weather Statement	GLD	Graham	15 min
Jul 18, 10:49 AM MDT	Special Weather Statement	GLD	Decatur	26 min
Jul 18, 10:57 AM MDT	Special Weather Statement	GLD	Graham	18 min
Jul 18, 11:13 AM MDT	Special Weather Statement	GLD	Sheridan	17 min
Jul 18, 11:15 AM MDT	Special Weather Statement	GLD	Graham	15 min
Jul 18, 11:24 AM MDT	Special Weather Statement	GLD	Gove	21 min
Jul 18, 12:07 PM MDT	Special Weather Statement	GLD	Sherman	23 min
Jul 18, 12:17 PM MDT	Severe Thunderstorm Warning	GLD	Sherman	58 min
Jul 18, 12:32 PM MDT	Special Weather Statement	GLD	Wallace	13 min
Jul 18, 12:33 PM MDT	Severe Thunderstorm Warning	GLD	Sherman	46 min
Jul 18, 12:40 PM MDT	Severe Thunderstorm Warning	GLD	Wallace	46 min
Jul 18, 1:10 PM MDT	Special Weather Statement	GLD	Greeley	20 min
Jul 18, 1:18 PM MDT	Severe Thunderstorm Warning	GLD	Greeley	57 min
Jul 18, 2:19 PM MDT	Special Weather Statement	GLD	Cheyenne	26 min
Jul 18, 2:50 PM MDT	Special Weather Statement	GLD	Cheyenne	25 min
Jul 18, 3:01 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	44 min
Jul 18, 3:25 PM MDT	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.