Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 154, NWS Goodland, KS

July 10, 2021Norton County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 10, 2021, 2:35 AM CDT for Norton County, Kansas. It was in force for 25 min. 4 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 10, 2021, 2:35 AM CDT (07:35 UTC)
Expired
Jul 10, 2021, 3:00 AM CDT
In force
25 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

County Norton County, KS

The radar

The Grand Island radar (KUEX), 134 km from the middle of the area, began a volume at 07:36 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
Jul 10, 2:35 AM CDTTSTM WND GST 611 N Norton, KSCORRECTED WIND GUST MAGNITUDE FROM PREVIOUS REPORT. THE AWOS IN NORTON (KNRN) MEASURED A WIND GUST OF 53 KNOTS (61 MPH) AT 1:35 AM MDT (0735 UTC) ON SATURDAY JULY 10, 2021.
Jul 10, 2:35 AM CDTTSTM WND GST 671 N Norton, KS
Jul 10, 2:41 AM CDTTSTM WND DMGNorton, KSSONIC RESTAURANT DISPLAY SIGN BLOWN OUT AND LAYING ON HWY 36 ACROSS ALL LANES. SIGN WIDTH IN ROAD IS APPROXIMATELY 15 FT WIDE BY ROUGHLY 20 FT ACROSS. OTHER SMALLER PARTS SCATTERED ACROSS THE HWY AT LOCATION. NO INJURIES REPORTED AND JUST A TRAFFIC HAZARD AT T
Jul 10, 2:49 AM CDTTSTM WND DMGNorton, KSSEVERAL TREE LIMBS DOWN. MAINLY 8 TO 10 FT IN LENGTH AND .75 TO 1.00 IN IN DIAMETER SNAPPED FROM TREE. MIDDLE OF WEST 100 BLOCK OF MAIN STREET IN NORTON. NO INJURIES AT THIS LOCATION.

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 00:00Z, 7.6 hours before the alert went out and 166 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, N. Platte/Lee Bi, NE at 00:00Z on 2021-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2799 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2021-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.19395878Sfc1 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
2799 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1859 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.9

Open this sounding in Storm Lab

The text

As transmitted.

183 
WUUS53 KGLD 100735
SVRGLD
KSC137-100800-
/O.NEW.KGLD.SV.W.0154.210710T0735Z-210710T0800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
235 AM CDT Sat Jul 10 2021

The National Weather Service in Goodland has issued a

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

* Until 300 AM CDT.

* At 234 AM CDT, a severe thunderstorm was located over Norton,
  moving southeast at 30 mph.

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

  SOURCE...Norton AWOS gusting to 67 mph.

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

* This severe thunderstorm will remain over mainly rural areas of
  Norton County, including the following locations... Reager,
  Densmore and Calvert.

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 9984 3981 10017 4000 9989 4000 9963
      3957 9963
TIME...MOT...LOC 0734Z 309DEG 26KT 3984 9986 

HAIL...0.75IN
WIND...70MPH
 
$$

JN
1 follow-up statement
840 
WWUS53 KGLD 100743
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
243 AM CDT Sat Jul 10 2021

KSC137-100800-
/O.CON.KGLD.SV.W.0154.000000T0000Z-210710T0800Z/
Norton KS-
243 AM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT
FOR NORTON COUNTY...

At 242 AM CDT, a severe thunderstorm was located 5 miles southeast of
Norton, moving southeast at 30 mph.

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

SOURCE...Norton AWOS gusting to 67 mph.

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

Locations impacted include...
Norton, Almena, Edmond, Densmore, Reager and Calvert. 

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 9984 3981 10017 4000 9989 4000 9963
      3957 9963
TIME...MOT...LOC 0742Z 309DEG 26KT 3980 9980 

HAIL...0.75IN
WIND...70MPH
 
$$

JN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 7:55 PM CDTSpecial Weather StatementGLDRawlins20 min
Jul 9, 9:38 PM CDTSpecial Weather StatementGLDSherman22 min
Jul 9, 10:25 PM CDTSpecial Weather StatementGLDThomas35 min
Jul 9, 10:35 PM CDTSevere Thunderstorm WarningGLDSherman, Thomas40 min
Jul 9, 10:39 PM CDTSevere Thunderstorm WarningGLDLogan, Wallace, Wichita36 min
Jul 9, 11:10 PM CDTSevere Thunderstorm WarningGLDGreeley, Wichita50 min
Jul 9, 11:23 PM CDTSpecial Weather StatementGLDGraham37 min
Jul 9, 11:25 PM CDTSpecial Weather StatementGLDSherman, Thomas35 min
Jul 9, 11:56 PM CDTSpecial Weather StatementGLDWichita34 min
Jul 10, 12:10 AM CDTSpecial Weather StatementGLDGove, Logan35 min
Jul 10, 12:33 AM CDTSpecial Weather StatementGLDGove, Greeley, Logan, Wallace, Wichita42 min
Jul 10, 1:23 AM CDTSpecial Weather StatementGLDCheyenne37 min
Jul 10, 1:43 AM CDTSpecial Weather StatementGLDDecatur47 min
Jul 10, 2:02 AM CDTSpecial Weather StatementGLDGreeley, Wichita28 min
Jul 10, 2:15 AM CDTSpecial Weather StatementGLDSheridan, Sherman, Thomas45 min
Jul 10, 2:21 AM CDTSpecial Weather StatementGLDDecatur, Norton39 min
Jul 10, 2:47 AM CDTSpecial Weather StatementGLDGove, Logan, Wallace43 min
Jul 10, 2:59 AM CDTSpecial Weather StatementGLDGraham, Norton46 min
Jul 10, 3:07 AM CDTSevere Thunderstorm WarningGLDGove, Logan, Wallace, Wichita53 min
Jul 10, 3:12 AM CDTSevere Thunderstorm WarningGLDGove, Graham, Norton, Sheridan33 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.