Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS Goodland, KS

April 27, 2021Cheyenne County, Kansas; Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Apr 27, 2021, 7:55 PM CDT for Cheyenne County, Kansas; Yuma County, Colorado. It was in force for 50 min. 11 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
Apr 27, 2021, 7:55 PM CDT (00:55 UTC)
Expired
Apr 27, 2021, 8:45 PM CDT
In force
50 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Yuma County, CO, Cheyenne County, KS

The radar

The Goodland radar (KGLD), 37 km from the middle of the area, began a volume at 00:54 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
Apr 27, 8:00 PM CDTTSTM WND DMG13 W Saint Francis, KSCALLER REPORTED STRONG WINDS WITH THAT BROKE A FEW LIMBS OFF EVERGREEN TREES. ESTIMATED 60-70 MPH.
Apr 27, 8:00 PM CDTHAIL 313 W Saint Francis, KSCALLER REPORTED MEASURED 3 INCH HAIL THAT DAMAGED THE ROOF OF A HOUSE.
Apr 27, 8:09 PM CDTHAIL 0.76 S Saint Francis, KSDELAYED REPORT VIA SOCIAL MEDIA OF PEA TO DIME SIZED HAIL.
Apr 27, 8:15 PM CDTHAIL 1Saint Francis, KSREPORT FROM MPING: QUARTER (1.00 IN.).
Apr 27, 8:16 PM CDTHAIL 0.52 W Wheeler, KSREPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 27, 8:18 PM CDTHAIL 1.54 W Saint Francis, KSDELAYED REPORT. RELAYED VIA SOCIAL MEDIA. A FEW PING PONG BALL SIZED HAILSTONES, BUT MOSTLY QUARTER SIZED OR SMALLER.
Apr 27, 8:19 PM CDTHAIL 1Saint Francis, KSEM REPORTED 1 INCH HAIL.
Apr 27, 8:19 PM CDTHAIL 1.514 Wsw Saint Francis, KSREPORT PASSED VIA COUNTY EMERGENCY MANAGER.
Apr 27, 8:25 PM CDTHAIL 1Saint Francis, KSREPORT FROM MPING: QUARTER (1.00 IN.).
Apr 27, 8:28 PM CDTHAIL 0.752 W Wheeler, KSREPORT FROM MPING: DIME (0.75 IN.).
Apr 27, 8:44 PM CDTTSTM WND GST 533 W Bird City, KSMESONET STATION DW4654 BIRD CITY.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 27, 6:36 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 27, 12:45 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.9 hours before the alert went out and 125 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, Denver, CO at 00:00Z on 2021-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2021-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.193958Sfc1 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
26 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1024 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

680 
WUUS53 KGLD 280055
SVRGLD
COC125-KSC023-280145-
/O.NEW.KGLD.SV.W.0009.210428T0055Z-210428T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
655 PM MDT Tue Apr 27 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Southeastern Yuma County in northeastern Colorado...
  Southwestern Cheyenne County in northwestern Kansas...

* Until 745 PM MDT/845 PM CDT/.

* At 655 PM MDT/755 PM CDT/, a severe thunderstorm was located 8
  miles northeast of Bonny Reservoir, moving east 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.

* This severe thunderstorm will remain over mainly rural areas of
  southeastern Yuma County in northeastern Colorado and southwestern
  Cheyenne Counties in northwestern Kansas, including the following
  locations... Wheeler and Hale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

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 3979 10156 3957 10160 3957 10174 3962 10215
      3979 10214
TIME...MOT...LOC 0055Z 278DEG 28KT 3968 10203 

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

Lockhart
2 follow-up statements
956 
WWUS53 KGLD 280112
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
812 PM CDT Tue Apr 27 2021

COC125-280121-
/O.CAN.KGLD.SV.W.0009.000000T0000Z-210428T0145Z/
Yuma CO-
812 PM CDT Tue Apr 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN YUMA COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
northwestern Kansas.

LAT...LON 3979 10156 3957 10160 3957 10174 3961 10204
      3979 10205
TIME...MOT...LOC 0111Z 253DEG 33KT 3975 10188 

$$

KSC023-280145-
/O.CON.KGLD.SV.W.0009.000000T0000Z-210428T0145Z/
Cheyenne KS-
812 PM CDT Tue Apr 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN CHEYENNE COUNTY IN NORTHWESTERN KANSAS...

At 811 PM CDT, a severe thunderstorm was located 4 miles west of St.
Francis, moving east at 40 mph.

This is a very dangerous storm.

HAZARD...Three inch hail.

SOURCE...Public.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

Locations impacted include...
St. Francis and Wheeler. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3979 10156 3957 10160 3957 10174 3961 10204
      3979 10205
TIME...MOT...LOC 0111Z 253DEG 33KT 3975 10188 

HAIL...3.00IN
WIND...<50MPH
 
$$

Lockhart
199 
WWUS53 KGLD 280139
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
839 PM CDT Tue Apr 27 2021

KSC023-280149-
/O.EXP.KGLD.SV.W.0009.000000T0000Z-210428T0145Z/
Cheyenne KS-
839 PM CDT Tue Apr 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHEYENNE COUNTY
IN NORTHWESTERN KANSAS WILL EXPIRE AT 845 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
northwestern Kansas.

LAT...LON 3979 10156 3957 10160 3957 10174 3961 10204
      3979 10205
TIME...MOT...LOC 0139Z 278DEG 28KT 3972 10161 

$$

Lockhart

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 7:23 PM CDTSevere Thunderstorm WarningGLDCheyenne, Sherman67 min
Apr 27, 7:40 PM CDTSpecial Weather StatementGLDCheyenne, Sherman65 min
Apr 27, 8:21 PM CDTSevere Thunderstorm WarningGLDCheyenne, Rawlins, Sherman39 min
Apr 27, 8:59 PM CDTSpecial Weather StatementGLDRawlins16 min
Apr 27, 9:26 PM CDTSpecial Weather StatementGLDDecatur, Rawlins49 min
Apr 27, 10:33 PM CDTSpecial Weather StatementGLDDecatur42 min

Nearby

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