Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 34, NWS Cheyenne, WY

June 6, 2021Cheyenne County, Kimball County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 6, 2021, 6:16 PM MDT for Cheyenne County, Kimball County, Nebraska. It was in force for 32 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: Jun 6, 2021, 6:16 PM MDT (00:16 UTC)
Expired: Jun 6, 2021, 6:48 PM MDT
In force: 32 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cheyenne County, NE, Kimball County, NE

The radar

The Cheyenne radar (KCYS), 95 km from the middle of the area, began a volume at 00:18 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
Jun 6, 6:20 PM MDT	HAIL 1	6 Ssw Kimball, NE

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 00:00Z, 0.3 hours before the alert went out and 150 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: 60 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 2807 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

873 
WUUS55 KCYS 070016
SVRCYS
NEC033-105-070100-
/O.NEW.KCYS.SV.W.0034.210607T0016Z-210607T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
616 PM MDT Sun Jun 6 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Western Cheyenne County in the Panhandle of Nebraska...
  Central Kimball County in the Panhandle of Nebraska...

* Until 700 PM MDT.

* At 616 PM MDT, a severe thunderstorm was located over Kimball
  Airport, or near Kimball, moving northeast at 25 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...
  Kimball, Dix, Oliver Reservoir and Kimball Airport. 

This includes Interstate 80 in Nebraska between mile markers 11 and
34.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Cheyenne.

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

&&

LAT...LON 4106 10376 4118 10386 4139 10362 4120 10337
TIME...MOT...LOC 0016Z 227DEG 20KT 4119 10373 

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

Claycomb

1 follow-up statement

292 
WWUS55 KCYS 070048
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
648 PM MDT Sun Jun 6 2021

NEC033-105-070058-
/O.CAN.KCYS.SV.W.0034.000000T0000Z-210607T0100Z/
Cheyenne NE-Kimball NE-
648 PM MDT Sun Jun 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CHEYENNE AND CENTRAL
KIMBALL COUNTIES IS CANCELLED...
                
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 cancelled.  However heavy rain is
still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Cheyenne.

LAT...LON 4106 10376 4118 10386 4139 10362 4120 10337
TIME...MOT...LOC 0046Z 227DEG 20KT 4131 10356 

$$

Claycomb

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 6, 7:39 PM MDT	Severe Thunderstorm Warning	CYS	Sioux	36 min
Jun 7, 3:59 PM MDT	Special Weather Statement	CYS	Banner, Kimball	46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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.