Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 41, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 8, 2021, 9:03 PM MDT for Banner County, Kimball County, Scotts Bluff County, Nebraska; Goshen County, Laramie County, Wyoming. It was in force for 42 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
- Jun 8, 2021, 9:03 PM MDT (03:03 UTC)
- Expired
- Jun 8, 2021, 9:45 PM MDT
- In force
- 42 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Banner County, NE, Kimball County, NE, Scotts Bluff County, NE, Goshen County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 93 km from the middle of the area, began a volume at 03:02 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 8, 9:32 PM MDT | TSTM WND DMG | 8 Sw Harrisburg, NE | POWER OUTAGES REPORTED IN THIS AREA. UTILITY COMPANY BELIEVES DAMAGE TO POWER POLES WAS CAUSED BY STRAIGHT LINE WINDS OR A MICROBURST. LOCATION ESTIMATED BY OUTAGE CLUSTER. TIME ESTIMATED BASED ON RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 3.1 hours before the alert went out and 192 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
- 424 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 3769 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
547
WUUS55 KCYS 090303
SVRCYS
NEC007-105-157-WYC015-021-090345-
/O.NEW.KCYS.SV.W.0041.210609T0303Z-210609T0345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
903 PM MDT Tue Jun 8 2021
The National Weather Service in Cheyenne has issued a
* Severe Thunderstorm Warning for...
Southwestern Scotts Bluff County in the Panhandle of Nebraska...
Kimball County in the Panhandle of Nebraska...
Banner County in the Panhandle of Nebraska...
Southeastern Goshen County in southeastern Wyoming...
Northeastern Laramie County in southeastern Wyoming...
* Until 945 PM MDT.
* At 903 PM MDT, severe thunderstorms were located along a line
extending from 6 miles southeast of La Grange to 6 miles southeast
of Albin to Pine Bluffs, moving east at 30 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Kimball, Pine Bluffs, La Grange, Dix, Albin, Oliver Campground,
Wildcat Hills State Recreation Area, Wildcat Hills Campground,
Oliver Reservoir, Hubbard Hill, Kimball Airport, Harrisburg and
Bushnell.
This includes the following highways...
Interstate 80 in Wyoming between mile markers 396 and 402.
Interstate 80 in Nebraska between mile markers 1 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Cheyenne.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4194 10383 4151 10338 4113 10340 4113 10418
4159 10427
TIME...MOT...LOC 0303Z 261DEG 24KT 4159 10407 4151 10399 4137 10398
4120 10408
HAIL...0.75IN
WIND...70MPH
$$
Hammer2 follow-up statements
023
WWUS55 KCYS 090329
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
929 PM MDT Tue Jun 8 2021
WYC015-021-090338-
/O.CAN.KCYS.SV.W.0041.000000T0000Z-210609T0345Z/
Goshen WY-Laramie WY-
929 PM MDT Tue Jun 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GOSHEN AND
NORTHEASTERN LARAMIE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4188 10377 4151 10338 4113 10340 4113 10405
4160 10405
TIME...MOT...LOC 0328Z 260DEG 25KT 4161 10382 4153 10374 4139 10373
4122 10383
$$
NEC007-105-157-090345-
/O.CON.KCYS.SV.W.0041.000000T0000Z-210609T0345Z/
Scotts Bluff NE-Kimball NE-Banner NE-
929 PM MDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM MDT
FOR SOUTH CENTRAL SCOTTS BLUFF...KIMBALL AND BANNER COUNTIES...
At 928 PM MDT, severe thunderstorms were located along a line
extending from 9 miles southwest of Wildcat Hills Campground to
Harrisburg to 11 miles north of Kimball to Oliver Campground, moving
east at 30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kimball, Dix, Oliver Campground, Wildcat Hills State Recreation Area,
Oliver Reservoir, Kimball Airport, Harrisburg, Wildcat Hills
Campground and Bushnell.
This includes Interstate 80 in Nebraska between mile markers 1 and
34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Cheyenne.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4188 10377 4151 10338 4113 10340 4113 10405
4160 10405
TIME...MOT...LOC 0328Z 260DEG 25KT 4161 10382 4153 10374 4139 10373
4122 10383
HAIL...0.75IN
WIND...60MPH
$$
Hammer647
WWUS55 KCYS 090343
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
943 PM MDT Tue Jun 8 2021
NEC007-105-157-090353-
/O.EXP.KCYS.SV.W.0041.000000T0000Z-210609T0345Z/
Scotts Bluff NE-Kimball NE-Banner NE-
943 PM MDT Tue Jun 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SCOTTS BLUFF...
KIMBALL AND BANNER COUNTIES WILL EXPIRE AT 945 PM MDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds and heavy rain are still possible with these
thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Cheyenne.
LAT...LON 4188 10377 4151 10338 4113 10340 4113 10405
4160 10405
TIME...MOT...LOC 0343Z 261DEG 24KT 4162 10373 4154 10365 4140 10364
4123 10374
$$
HammerThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 9:45 PM MDT | Special Weather Statement | CYS | Banner, Kimball | 45 min |
| Jun 8, 10:26 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Cheyenne, Kimball, Morrill | 49 min |
| Jun 8, 11:15 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 45 min |
| Jun 8, 11:49 PM MDT | Special Weather Statement | CYS | Cheyenne | 26 min |
| Jun 9, 2:11 PM MDT | High Wind Watch | CYS | Box Butte, Dawes, Sioux | 12 hr |
| Jun 9, 2:11 PM MDT | High Wind Warning | CYS | Box Butte, Dawes, Sioux | 39 hr |
| Jun 8, 6:14 PM MDT | Special Weather Statement | CYS | Laramie | 31 min |
| Jun 8, 6:45 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 45 min |
| Jun 8, 7:27 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 48 min |
| Jun 8, 7:30 PM MDT | Flash Flood Warning | CYS | Laramie | 3 hr |
| Jun 8, 8:21 PM MDT | Special Weather Statement | CYS | Niobrara | 54 min |
| Jun 8, 8:29 PM MDT | Special Weather Statement | CYS | Laramie | 46 min |
| Jun 8, 8:35 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 55 min |
| Jun 8, 8:36 PM MDT | Special Weather Statement | CYS | Laramie | 39 min |
| Jun 8, 9:08 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 52 min |
| Jun 8, 9:33 PM MDT | Special Weather Statement | CYS | Niobrara | 57 min |
| Jun 8, 10:20 PM MDT | Areal Flood Advisory | CYS | Laramie | 3 hr |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2021Severe Thunderstorm Warnings in Wyoming, 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.