Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 26, 2021, 6:12 PM MDT for Box Butte County, Nebraska. It was in force for 49 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, 6:12 PM MDT (00:12 UTC)
- Expired
- May 26, 2021, 7:01 PM MDT
- In force
- 49 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Box Butte County, NE
The radar
The Cheyenne radar (KCYS), 192 km from the middle of the area, began a volume at 00:14 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 26, 6:25 PM MDT | HAIL 1 | 17 Nne Alliance, 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
Rapid City, SD (KUNR), launched 00:00Z, 0.2 hours before the alert went out and 203 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 370 m²/s²
- 0-3 km storm-relative helicity
- 626 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
560
WUUS55 KCYS 270012
SVRCYS
NEC013-270115-
/O.NEW.KCYS.SV.W.0024.210527T0012Z-210527T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
612 PM MDT Wed May 26 2021
The National Weather Service in Cheyenne has issued a
* Severe Thunderstorm Warning for...
Central Box Butte County in the Panhandle of Nebraska...
* Until 715 PM MDT.
* At 612 PM MDT, a severe thunderstorm was located near Hemingford,
or 16 miles northwest of Alliance, 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...
Alliance, Hemingford, Wild Horse Butte and Berea.
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 4217 10327 4237 10326 4244 10275 4220 10274
4211 10275
TIME...MOT...LOC 0012Z 266DEG 25KT 4225 10312
TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
$$
Trudel2 follow-up statements
132
WWUS55 KCYS 270053
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
653 PM MDT Wed May 26 2021
NEC013-270115-
/O.CON.KCYS.SV.W.0024.000000T0000Z-210527T0115Z/
Box Butte NE-
653 PM MDT Wed May 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MDT
FOR NORTHEASTERN BOX BUTTE COUNTY...
At 652 PM MDT, a severe thunderstorm was located near Wild Horse
Butte, or 13 miles northeast of Alliance, moving east at 30 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Wild Horse Butte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4218 10296 4236 10297 4244 10275 4220 10274
4211 10275
TIME...MOT...LOC 0052Z 266DEG 25KT 4227 10274
HAIL...1.50IN
WIND...60MPH
$$
Trudel174
WWUS55 KCYS 270101
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
701 PM MDT Wed May 26 2021
NEC013-270111-
/O.CAN.KCYS.SV.W.0024.000000T0000Z-210527T0115Z/
Box Butte NE-
701 PM MDT Wed May 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BOX BUTTE COUNTY
IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. However small hail and gusty winds are still
possible with this thunderstorm until 715 PM.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska.
LAT...LON 4218 10296 4236 10297 4244 10275 4220 10274
4211 10275
TIME...MOT...LOC 0058Z 266DEG 25KT 4227 10265
$$
TrudelThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 6:08 PM MDT | Special Weather Statement | CYS | Banner | 37 min |
| May 26, 6:10 PM MDT | Special Weather Statement | CYS | Banner | 35 min |
| May 26, 6:21 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 13 min |
| May 26, 7:49 PM MDT | Special Weather Statement | CYS | Box Butte | 41 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2021Every 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.