Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 86, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 9, 2021, 3:37 PM MDT for Cheyenne County, Kimball County, Nebraska. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2021, 3:37 PM MDT (21:37 UTC)
- Expired
- Jul 9, 2021, 4:19 PM MDT
- In force
- 42 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Cheyenne County, NE, Kimball County, NE
The radar
The Cheyenne radar (KCYS), 96 km from the middle of the area, began a volume at 21:37 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 9, 2:16 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.6 hours before the alert went out and 145 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
- 5 J/kg
- Mixed-layer CIN
- -346 J/kg
- Mixed-layer LCL
- 3383 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
875
WUUS55 KCYS 092137
SVRCYS
NEC033-105-092230-
/O.NEW.KCYS.SV.W.0086.210709T2137Z-210709T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
337 PM MDT Fri Jul 9 2021
The National Weather Service in Cheyenne has issued a
* Severe Thunderstorm Warning for...
Western Cheyenne County in the Panhandle of Nebraska...
Kimball County in the Panhandle of Nebraska...
* Until 430 PM MDT.
* At 337 PM MDT, severe thunderstorms were located along a line
extending from 10 miles north of Dix to 9 miles south of Oliver
Reservoir, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Kimball, Potter, Dix, Oliver Campground, Brownson, Oliver Reservoir
and Kimball Airport.
This includes Interstate 80 in Nebraska between mile markers 11 and
53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
&&
LAT...LON 4107 10392 4124 10383 4139 10362 4139 10307
4100 10306 4101 10381 4100 10382 4100 10385
TIME...MOT...LOC 2137Z 317DEG 34KT 4139 10347 4109 10381
HAIL...1.25IN
WIND...60MPH
$$
Hammer3 follow-up statements
800
WWUS55 KCYS 092151
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
351 PM MDT Fri Jul 9 2021
NEC033-105-092230-
/O.CON.KCYS.SV.W.0086.000000T0000Z-210709T2230Z/
Cheyenne NE-Kimball NE-
351 PM MDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR WESTERN CHEYENNE AND EASTERN KIMBALL COUNTIES...
At 350 PM MDT, severe thunderstorms were located along a line
extending from 7 miles northwest of Potter to 11 miles south of
Kimball Airport, moving southeast at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Trained weather spotters. This storm has a history of
producing up to golf ball sized hail.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Kimball, Potter, Dix and Brownson.
This includes Interstate 80 in Nebraska between mile markers 22 and
53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4139 10353 4139 10307 4100 10306 4101 10380
TIME...MOT...LOC 2150Z 317DEG 34KT 4132 10338 4102 10372
HAIL...1.50IN
WIND...60MPH
$$
Hammer944
WWUS55 KCYS 092204
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
404 PM MDT Fri Jul 9 2021
NEC033-105-092230-
/O.CON.KCYS.SV.W.0086.000000T0000Z-210709T2230Z/
Cheyenne NE-Kimball NE-
404 PM MDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR WESTERN CHEYENNE AND SOUTHEASTERN KIMBALL COUNTIES...
At 404 PM MDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Potter to 8 miles north of
Westplains, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Potter and Brownson.
This includes Interstate 80 in Nebraska between mile markers 34 and
53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4136 10330 4136 10307 4100 10306 4101 10362
TIME...MOT...LOC 2204Z 312DEG 35KT 4130 10319 4098 10349
HAIL...1.00IN
WIND...60MPH
$$
Hammer799
WWUS55 KCYS 092219
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
419 PM MDT Fri Jul 9 2021
NEC033-105-092229-
/O.CAN.KCYS.SV.W.0086.000000T0000Z-210709T2230Z/
Cheyenne NE-Kimball NE-
419 PM MDT Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CHEYENNE AND
SOUTHEASTERN KIMBALL COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Cheyenne.
LAT...LON 4136 10330 4136 10307 4100 10306 4101 10362
TIME...MOT...LOC 2216Z 317DEG 34KT 4122 10309 4090 10339
$$
HammerThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 2:20 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 40 min |
| Jul 9, 2:51 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 39 min |
| Jul 9, 2:58 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Cheyenne, Kimball, Morrill | 47 min |
| Jul 9, 3:32 PM MDT | Special Weather Statement | CYS | Sioux | 28 min |
| Jul 9, 3:54 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sioux | 36 min |
| Jul 9, 4:30 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Sioux | 45 min |
| Jul 9, 5:08 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes | 52 min |
| Jul 9, 5:42 PM MDT | Tornado Warning | CYS | Box Butte | 33 min |
| Jul 9, 5:49 PM MDT | Areal Flood Advisory | CYS | Box Butte, Morrill | 3 hr |
| Jul 9, 5:58 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.