Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 52, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 13, 2021, 5:50 PM MDT for Box Butte County, Dawes County, Sioux County, Nebraska. It was in force for 55 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
- Jun 13, 2021, 5:50 PM MDT (23:50 UTC)
- Expired
- Jun 13, 2021, 6:45 PM MDT
- In force
- 55 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE
The radar
The Rapid City radar (KUDX), 168 km from the middle of the area, began a volume at 23:51 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 |
|---|---|---|---|
| Jun 13, 6:17 PM MDT | HAIL 1 | 7 Se Crawford, NE | |
| Jun 13, 6:28 PM MDT | HAIL 1 | 10 S Fort Robinson, 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 |
|---|---|---|---|
| Jun 13, 3:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 11.8 hours before the alert went out and 161 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
- 10 J/kg
- Mixed-layer CIN
- -354 J/kg
- Mixed-layer LCL
- 2455 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
114 WUUS55 KCYS 132350 SVRCYS NEC013-045-165-140045- /O.NEW.KCYS.SV.W.0052.210613T2350Z-210614T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Cheyenne WY 550 PM MDT Sun Jun 13 2021 The National Weather Service in Cheyenne has issued a * Severe Thunderstorm Warning for... Northwestern Box Butte County in the Panhandle of Nebraska... Southern Dawes County in the Panhandle of Nebraska... Northeastern Sioux County in the Panhandle of Nebraska... * Until 645 PM MDT. * At 549 PM MDT, severe thunderstorms were located along a line extending from 9 miles northwest of Fort Robinson Campground to 9 miles north of Box Butte Campground, moving north at 10 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Severe thunderstorms will be near... Red Cloud Campground around 625 PM MDT. Chadron Campground around 630 PM MDT. Montrose around 645 PM MDT. Other locations impacted by these severe thunderstorms include Whitney, Fort Robinson, Marsland and Chadron St Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4293 10375 4273 10288 4234 10308 4249 10384 TIME...MOT...LOC 2349Z 160DEG 8KT 4274 10367 4259 10312 HAIL...1.25IN WIND...<50MPH $$ Rubin
2 follow-up statements
926
WWUS55 KCYS 140010
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
610 PM MDT Sun Jun 13 2021
NEC013-045-165-140045-
/O.CON.KCYS.SV.W.0052.000000T0000Z-210614T0045Z/
Box Butte NE-Dawes NE-Sioux NE-
610 PM MDT Sun Jun 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR NORTHWESTERN BOX BUTTE...SOUTHERN DAWES AND NORTHEASTERN SIOUX
COUNTIES...
At 610 PM MDT, severe thunderstorms were located along a line
extending from 8 miles west of Fort Robinson Campground to 8 miles
north of Box Butte Campground, and are nearly stationary.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
These severe storms will be near...
Fort Robinson Campground and Red Cloud Campground around 700 PM
MDT.
Other locations impacted by these severe thunderstorms include
Whitney, Fort Robinson, Marsland and Chadron St Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4293 10375 4273 10288 4234 10308 4249 10384
TIME...MOT...LOC 0010Z 265DEG 3KT 4266 10366 4258 10311
HAIL...1.50IN
WIND...<50MPH
$$
Rubin146
WWUS55 KCYS 140027
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
627 PM MDT Sun Jun 13 2021
NEC013-045-165-140045-
/O.CON.KCYS.SV.W.0052.000000T0000Z-210614T0045Z/
Box Butte NE-Dawes NE-Sioux NE-
627 PM MDT Sun Jun 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR NORTHWESTERN BOX BUTTE...SOUTHERN DAWES AND NORTHEASTERN SIOUX
COUNTIES...
At 627 PM MDT, severe thunderstorms were located along a line
extending from 9 miles southeast of Harrison to 12 miles south of
Crawford, moving north at 20 mph.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
These severe storms will be near...
Crawford and Fort Robinson Campground around 705 PM MDT.
Other locations impacted by these severe thunderstorms include
Whitney, Fort Robinson, Marsland and Chadron St Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4293 10375 4273 10288 4234 10308 4249 10384
TIME...MOT...LOC 0027Z 159DEG 18KT 4258 10378 4251 10342
HAIL...1.50IN
WIND...<50MPH
$$
RubinThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 5:13 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff, Sioux | 47 min |
| Jun 13, 5:31 PM MDT | Special Weather Statement | CYS | Dawes | 44 min |
| Jun 13, 5:58 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff, Sioux | 47 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.