Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 23, NWS Cheyenne, WY

May 26, 2021Cheyenne County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 26, 2021, 5:42 PM MDT for Cheyenne County, Nebraska. It was in force for 30 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: May 26, 2021, 5:42 PM MDT (23:42 UTC)
Expired: May 26, 2021, 6:12 PM MDT
In force: 30 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Cheyenne County, NE

The radar

The Cheyenne radar (KCYS), 179 km from the middle of the area, began a volume at 23:45 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
May 26, 6:00 PM MDT	HAIL 0.88	Lodgepole, NE
May 26, 6:05 PM MDT	HAIL 1	Lodgepole, NE

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.

Issued	Product	Office	Lasted
May 26, 1:27 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.7 hours before the alert went out and 153 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: 138 J/kg
Mixed-layer CIN: -221 J/kg
Mixed-layer LCL: 1456 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

836 
WUUS55 KCYS 262342
SVRCYS
NEC033-270030-
/O.NEW.KCYS.SV.W.0023.210526T2342Z-210527T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
542 PM MDT Wed May 26 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Southeastern Cheyenne County in the Panhandle of Nebraska...

* Until 630 PM MDT.

* At 542 PM MDT, a severe thunderstorm was located near Sunol, or 12
  miles west of Chappell, moving northeast at 10 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Lodgepole around 600 PM MDT.

This includes Interstate 80 in Nebraska between mile markers 63 and
77.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4106 10261 4103 10265 4111 10290 4141 10264
      4139 10261
TIME...MOT...LOC 2342Z 212DEG 9KT 4112 10271 

HAIL...1.75IN
WIND...60MPH
 
$$

Rubin

2 follow-up statements

687 
WWUS55 KCYS 262355
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
555 PM MDT Wed May 26 2021

NEC033-270030-
/O.CON.KCYS.SV.W.0023.000000T0000Z-210527T0030Z/
Cheyenne NE-
555 PM MDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR SOUTHEASTERN CHEYENNE COUNTY...

At 555 PM MDT, a severe thunderstorm was located over Lodgepole, or
10 miles west of Chappell, moving northeast at 10 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Lodgepole around 600 PM MDT.

This includes Interstate 80 in Nebraska between mile markers 70 and
77.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4106 10261 4103 10265 4107 10279 4134 10261
TIME...MOT...LOC 2355Z 236DEG 11KT 4114 10265 

HAIL...1.25IN
WIND...60MPH
 
$$

Rubin

831 
WWUS55 KCYS 270012
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
612 PM MDT Wed May 26 2021

NEC033-270022-
/O.CAN.KCYS.SV.W.0023.000000T0000Z-210527T0030Z/
Cheyenne NE-
612 PM MDT Wed May 26 2021

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

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska.

LAT...LON 4106 10261 4103 10265 4107 10279 4134 10261
TIME...MOT...LOC 0010Z 212DEG 9KT 4118 10262 

$$

Rubin

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 2:25 PM MDT	Special Weather Statement	CYS	Dawes	50 min
May 26, 2:50 PM MDT	Special Weather Statement	CYS	Sioux	40 min
May 26, 3:08 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes, Sioux	37 min
May 26, 3:17 PM MDT	Special Weather Statement	CYS	Dawes	43 min
May 26, 3:20 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	40 min
May 26, 3:45 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	45 min
May 26, 4:15 PM MDT	Special Weather Statement	CYS	Sioux	45 min
May 26, 4:29 PM MDT	Special Weather Statement	CYS	Dawes	46 min
May 26, 4:36 PM MDT	Special Weather Statement	CYS	Cheyenne, Kimball	39 min
May 26, 4:39 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes	51 min
May 26, 4:47 PM MDT	Tornado Warning	CYS	Sioux	28 min
May 26, 5:18 PM MDT	Special Weather Statement	CYS	Morrill	42 min
May 26, 5:27 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Morrill	33 min
May 26, 5:30 PM MDT	Severe Thunderstorm Warning	CYS	Banner	34 min
May 26, 5:32 PM MDT	Special Weather Statement	CYS	Box Butte	43 min
May 26, 5:41 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Sioux	34 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.