Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 20, NWS Cheyenne, WY

May 26, 2021Cheyenne County, Morrill County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 26, 2021, 5:27 PM MDT for Cheyenne County, Morrill County, Nebraska. It was in force for 33 min. 3 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, 5:27 PM MDT (23:27 UTC)
Expired: May 26, 2021, 6:00 PM MDT
In force: 33 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Cheyenne County, NE, Morrill County, NE

The radar

The Cheyenne radar (KCYS), 176 km from the middle of the area, began a volume at 23:29 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
May 26, 5:30 PM MDT	HAIL 1	Gurley, NE
May 26, 5:30 PM MDT	HAIL 2.5	Gurley, NE
May 26, 5:40 PM MDT	HAIL 1	8 Ne Dalton, 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.5 hours before the alert went out and 187 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2021 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

294 
WUUS55 KCYS 262327
SVRCYS
NEC033-123-270000-
/O.NEW.KCYS.SV.W.0020.210526T2327Z-210527T0000Z/

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

The National Weather Service in Cheyenne has issued a

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

* Until 600 PM MDT.

* At 527 PM MDT, a severe thunderstorm was located near Dalton, or 17
  miles north of Sidney, moving northeast at 35 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Public.

  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.

* Locations impacted include...
  Dalton, Gurley and Broadwater. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4126 10282 4135 10308 4183 10283 4177 10267
      4174 10266 4174 10264 4149 10264
TIME...MOT...LOC 2327Z 205DEG 30KT 4138 10289 

HAIL...1.50IN
WIND...60MPH
 
$$

Trudel

2 follow-up statements

145 
WWUS55 KCYS 262345
SVSCYS

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

NEC033-262354-
/O.CAN.KCYS.SV.W.0020.000000T0000Z-210527T0000Z/
Cheyenne NE-
545 PM MDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHEYENNE 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 900 PM MDT for 
the Panhandle of Nebraska. A Severe thunderstorm warning remains in 
effect for southeast Cheyenne County, including Lodgepole, for a 
seperate storm. 

LAT...LON 4144 10268 4145 10303 4183 10283 4177 10267
      4174 10266 4174 10264 4149 10264
TIME...MOT...LOC 2344Z 205DEG 30KT 4151 10281 

$$

NEC123-270000-
/O.CON.KCYS.SV.W.0020.000000T0000Z-210527T0000Z/
Morrill NE-
545 PM MDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MDT
FOR SOUTHEASTERN MORRILL COUNTY...

At 544 PM MDT, a severe thunderstorm was located 9 miles west of
Lisco, or 25 miles west of Oshkosh, moving northeast at 35 mph.

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

SOURCE...Trained weather spotters. Numerous reports of quarter to 
         ping pong ball sized hail in and near Gurley, south of 
         Broadwater.

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.

Locations impacted include...
Broadwater.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4144 10268 4145 10303 4183 10283 4177 10267
      4174 10266 4174 10264 4149 10264
TIME...MOT...LOC 2344Z 205DEG 30KT 4151 10281 

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

Trudel

106 
WWUS55 KCYS 262357
SVSCYS

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

NEC123-270007-
/O.EXP.KCYS.SV.W.0020.000000T0000Z-210527T0000Z/
Morrill NE-
557 PM MDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORRILL COUNTY
WILL EXPIRE AT 600 PM MDT...
                
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 will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

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

LAT...LON 4144 10268 4145 10303 4183 10283 4177 10267
      4174 10266 4174 10264 4149 10264
TIME...MOT...LOC 2357Z 205DEG 30KT 4158 10276 

$$

Trudel

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, 5:30 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
May 26, 5:42 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne	30 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.