Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 44, NWS Cheyenne, WY

June 8, 2021Banner County, Kimball County, Nebraska; Laramie County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 8, 2021, 11:15 PM MDT for Banner County, Kimball County, Nebraska; Laramie County, Wyoming. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 8, 2021, 11:15 PM MDT (05:15 UTC)
Expired: Jun 9, 2021, 12:00 AM MDT
In force: 45 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Banner County, NE, Kimball County, NE, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 89 km from the middle of the area, began a volume at 05:14 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.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 5.3 hours before the alert went out and 167 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: 424 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 3769 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

586 
WUUS55 KCYS 090515
SVRCYS
NEC007-105-WYC021-090600-
/O.NEW.KCYS.SV.W.0044.210609T0515Z-210609T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
1115 PM MDT Tue Jun 8 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Kimball County in the Panhandle of Nebraska...
  Southern Banner County in the Panhandle of Nebraska...
  Southeastern Laramie County in southeastern Wyoming...

* Until midnight MDT.

* At 1115 PM MDT, severe thunderstorms were located along a line
  extending from 10 miles east of Albin to 6 miles southeast of
  Burns, moving east 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.

* Severe thunderstorms will be near...
  Pine Bluffs around 1145 PM MDT.
  Oliver Campground and Oliver Reservoir around 1200 AM MDT.

Other locations impacted by these severe thunderstorms include
Bushnell.

This includes the following highways...
 Interstate 80 in Wyoming between mile markers 389 and 402.
 Interstate 80 in Nebraska between mile markers 1 and 25.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4151 10339 4103 10368 4109 10439 4146 10395
TIME...MOT...LOC 0515Z 258DEG 20KT 4141 10390 4112 10427 

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

Rubin

2 follow-up statements

259 
WWUS55 KCYS 090544
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1144 PM MDT Tue Jun 8 2021

NEC007-090554-
/O.CAN.KCYS.SV.W.0044.000000T0000Z-210609T0600Z/
Banner NE-
1144 PM MDT Tue Jun 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BANNER COUNTY IS
CANCELLED...

The storms which prompted the warning have weakened. Therefore, the 
warning has been cancelled. A warning remains in place for storms to 
the south in Kimball County. 

LAT...LON 4107 10420 4139 10401 4139 10346 4103 10368
TIME...MOT...LOC 0544Z 258DEG 20KT 4144 10370 4115 10407 

$$

NEC105-WYC021-090600-
/O.CON.KCYS.SV.W.0044.000000T0000Z-210609T0600Z/
Kimball NE-Laramie WY-
1144 PM MDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FOR KIMBALL AND EAST CENTRAL LARAMIE COUNTIES...

At 1144 PM MDT, severe thunderstorms were located along a line
extending from 7 miles south of Harrisburg to Pine Bluffs, moving
east 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, Pine Bluffs, Oliver Campground, Oliver Reservoir, Kimball
Airport and Bushnell.

This includes the following highways...
 Interstate 80 in Wyoming between mile markers 397 and 402.
 Interstate 80 in Nebraska between mile markers 1 and 25.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4107 10420 4139 10401 4139 10346 4103 10368
TIME...MOT...LOC 0544Z 258DEG 20KT 4144 10370 4115 10407 

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

Brothers

488 
WWUS55 KCYS 090558
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1158 PM MDT Tue Jun 8 2021

NEC105-WYC021-090607-
/O.EXP.KCYS.SV.W.0044.000000T0000Z-210609T0600Z/
Kimball NE-Laramie WY-
1158 PM MDT Tue Jun 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR KIMBALL AND SOUTHEASTERN
LARAMIE COUNTIES WILL EXPIRE AT MIDNIGHT MDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

LAT...LON 4107 10420 4139 10401 4139 10346 4103 10368
TIME...MOT...LOC 0557Z 258DEG 20KT 4145 10363 4116 10400 

$$

Brothers

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 9:03 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Kimball, Scotts Bluff	42 min
Jun 8, 9:45 PM MDT	Special Weather Statement	CYS	Banner, Kimball	45 min
Jun 8, 10:26 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Cheyenne, Kimball, Morrill	49 min
Jun 8, 11:49 PM MDT	Special Weather Statement	CYS	Cheyenne	26 min
Jun 9, 2:11 PM MDT	High Wind Watch	CYS	Box Butte, Dawes, Sioux	12 hr
Jun 9, 2:11 PM MDT	High Wind Warning	CYS	Box Butte, Dawes, Sioux	39 hr
Jun 8, 6:14 PM MDT	Special Weather Statement	CYS	Laramie	31 min
Jun 8, 6:45 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	45 min
Jun 8, 7:27 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	48 min
Jun 8, 7:30 PM MDT	Flash Flood Warning	CYS	Laramie	3 hr
Jun 8, 8:21 PM MDT	Special Weather Statement	CYS	Niobrara	54 min
Jun 8, 8:29 PM MDT	Special Weather Statement	CYS	Laramie	46 min
Jun 8, 8:35 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	55 min
Jun 8, 8:36 PM MDT	Special Weather Statement	CYS	Laramie	39 min
Jun 8, 9:08 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	52 min
Jun 8, 9:33 PM MDT	Special Weather Statement	CYS	Niobrara	57 min
Jun 8, 10:20 PM MDT	Areal Flood Advisory	CYS	Laramie	3 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021 Severe Thunderstorm Warnings in Wyoming, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.