Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 161, NWS Goodland, KS

July 18, 2021Decatur County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 18, 2021, 10:55 AM CDT for Decatur County, Kansas. It was in force for 50 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: Jul 18, 2021, 10:55 AM CDT (15:55 UTC)
Expired: Jul 18, 2021, 11:45 AM CDT
In force: 50 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Decatur County, KS

The radar

The Goodland radar (KGLD), 116 km from the middle of the area, began a volume at 15:56 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, 11:00 AM CDT	TSTM WND DMG	3 Nw Clayton, KS	SPOTTER REPORTED DAMAGING WINDS ESTIMATED 70 MPH. WINDS WERE STRONG ENOUGH TO BLOW STEEL LAWN FURNITURE 6-7 FT, SNAPPED AN 8 FT LONG TREE BRANCH AND THREW IT ACROSS THE YARD FROM ROAD TO THE HOUSE. RAIN CAME IN HORIZONTAL THROUGH THE KEYHOLE OF THE DOOR AND SP
Jul 18, 11:14 AM CDT	TSTM WND GST 55	4 Se Jennings, KS	REPORTED VIA WEATHER UNDERGROUND STATION KKSJENN14.

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 3.9 hours before the alert went out and 152 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.

539 
WUUS53 KGLD 181555
SVRGLD
KSC039-181645-
/O.NEW.KGLD.SV.W.0161.210718T1555Z-210718T1645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
1055 AM CDT Sun Jul 18 2021

The National Weather Service in Goodland has issued a

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

* Until 1145 AM CDT.

* At 1054 AM CDT, a severe thunderstorm was located 7 miles west of
  Norcatur, or 11 miles east of Oberlin, moving south at 30 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* This severe thunderstorm will be near...
  Jennings around 1110 AM CDT.

Other locations in the path of this severe thunderstorm include
Dresden.

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 3993 10059 3985 10018 3957 10018 3957 10074
TIME...MOT...LOC 1554Z 010DEG 26KT 3980 10032 

HAIL...1.00IN
WIND...70MPH
 
$$

TT/JTL

3 follow-up statements

121 
WWUS53 KGLD 181610
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1110 AM CDT Sun Jul 18 2021

KSC039-181645-
/O.CON.KGLD.SV.W.0161.000000T0000Z-210718T1645Z/
Decatur KS-
1110 AM CDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR DECATUR COUNTY...

At 1109 AM CDT, a severe thunderstorm was located near Jennings, or
13 miles southeast of Oberlin, moving south at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
  Dresden.

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 3989 10061 3985 10018 3957 10018 3957 10074
TIME...MOT...LOC 1609Z 010DEG 26KT 3969 10035 

HAIL...1.00IN
WIND...60MPH
 
$$

TT/JTL

833 
WWUS53 KGLD 181628
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1128 AM CDT Sun Jul 18 2021

KSC039-181645-
/O.CON.KGLD.SV.W.0161.000000T0000Z-210718T1645Z/
Decatur KS-
1128 AM CDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR SOUTHERN DECATUR COUNTY...

At 1128 AM CDT, a severe thunderstorm was located 7 miles northwest
of Dresden, or 8 miles south of Oberlin, moving south at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Jennings, Dresden and Leoville. 

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 3980 10064 3977 10029 3957 10028 3957 10074
TIME...MOT...LOC 1628Z 004DEG 16KT 3970 10051 

HAIL...1.00IN
WIND...60MPH
 
$$

Lundquist

170 
WWUS53 KGLD 181646
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1146 AM CDT Sun Jul 18 2021

KSC039-181656-
/O.EXP.KGLD.SV.W.0161.000000T0000Z-210718T1645Z/
Decatur KS-
1146 AM CDT Sun Jul 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DECATUR COUNTY HAS
EXPIRED...
                
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 allowed to expire.  However nickel 
size hail is still possible with this thunderstorm.

LAT...LON 3980 10064 3977 10029 3957 10028 3957 10074
TIME...MOT...LOC 1646Z 010DEG 26KT 3959 10053 

$$

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, 11:07 AM CDT	Severe Thunderstorm Warning	GLD	Norton	23 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.