Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 17, NWS Cheyenne, WY

May 26, 2021Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 26, 2021, 3:45 PM MDT for Dawes County, Nebraska. It was in force for 45 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: May 26, 2021, 3:45 PM MDT (21:45 UTC)
Expired: May 26, 2021, 4:30 PM MDT
In force: 45 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Dawes County, NE

The radar

The Rapid City radar (KUDX), 175 km from the middle of the area, began a volume at 21:47 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, 3:48 PM MDT	TSTM WND DMG	Fort Robinson, NE	POWER OUTAGES AT RED CLOUD CAMPGROUND AND TREE LIMB BROKEN.

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

Rapid City, SD (KUNR), launched 12:00Z, 9.8 hours before the alert went out and 168 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: 797 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 366 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

043 
WUUS55 KCYS 262145
SVRCYS
NEC045-262230-
/O.NEW.KCYS.SV.W.0017.210526T2145Z-210526T2230Z/

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

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Southern Dawes County in the Panhandle of Nebraska...

* Until 430 PM MDT.

* At 343 PM MDT, a severe thunderstorm was located 8 miles south of
  Crawford, or 28 miles southwest of Chadron, moving east at 30 mph.

  HAZARD...Ping pong 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.

* Locations impacted include...
  Crawford, Red Cloud Campground, Chadron Campground, Fort Robinson
  and Chadron St Park.

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 4244 10348 4266 10348 4270 10342 4279 10306
      4250 10286
TIME...MOT...LOC 2143Z 259DEG 25KT 4257 10343 

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

Trudel

1 follow-up statement

851 
WWUS55 KCYS 262222
SVSCYS

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

NEC045-262232-
/O.EXP.KCYS.SV.W.0017.000000T0000Z-210526T2230Z/
Dawes NE-
422 PM MDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DAWES COUNTY WILL
EXPIRE AT 430 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 small hail
and 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 4244 10348 4266 10348 4270 10342 4279 10306
      4250 10286
TIME...MOT...LOC 2222Z 259DEG 25KT 4262 10308 

$$

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, 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
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.