Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 98, NWS Cheyenne, WY

July 13, 20215 counties in Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 13, 2021, 11:16 PM MDT for 5 counties in Nebraska. It was in force for 44 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 13, 2021, 11:16 PM MDT (05:16 UTC)
Expired: Jul 14, 2021, 12:00 AM MDT
In force: 44 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Banner County, NE, Cheyenne County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE

The radar

The Cheyenne radar (KCYS), 114 km from the middle of the area, began a volume at 05:17 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 13, 4:25 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 5.3 hours before the alert went out and 183 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: 2543 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

468 
WUUS55 KCYS 140516
SVRCYS
NEC007-033-105-123-157-140600-
/O.NEW.KCYS.SV.W.0098.210714T0516Z-210714T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
1116 PM MDT Tue Jul 13 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Southeastern Scotts Bluff County in the Panhandle of Nebraska...
  Northwestern Cheyenne County in the Panhandle of Nebraska...
  Northeastern Kimball County in the Panhandle of Nebraska...
  Southwestern Morrill County in the Panhandle of Nebraska...
  Eastern Banner County in the Panhandle of Nebraska...

* Until midnight MDT.

* At 1116 PM MDT, a severe thunderstorm was located near Harrisburg,
  or 21 miles north of Kimball, moving east at 35 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...
  Redington and Harrisburg. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4148 10377 4170 10364 4154 10314 4130 10327
TIME...MOT...LOC 0516Z 291DEG 30KT 4154 10363 

HAIL...1.00IN
WIND...60MPH
 
$$

Cox

3 follow-up statements

735 
WWUS55 KCYS 140529
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1129 PM MDT Tue Jul 13 2021

NEC157-140538-
/O.CAN.KCYS.SV.W.0098.000000T0000Z-210714T0600Z/
Scotts Bluff NE-
1129 PM MDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SCOTTS BLUFF
COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight MDT for
the Panhandle of Nebraska.

LAT...LON 4147 10375 4169 10362 4154 10314 4130 10327
TIME...MOT...LOC 0528Z 290DEG 27KT 4152 10355 

$$

NEC007-033-105-123-140600-
/O.CON.KCYS.SV.W.0098.000000T0000Z-210714T0600Z/
Cheyenne NE-Kimball NE-Morrill NE-Banner NE-
1129 PM MDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FOR NORTHWESTERN CHEYENNE...NORTHEASTERN KIMBALL...SOUTHWESTERN
MORRILL AND EASTERN BANNER COUNTIES...

At 1128 PM MDT, a severe thunderstorm was located 10 miles east of
Harrisburg, or 20 miles north of Kimball, moving east at 30 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...
Redington and Harrisburg. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4147 10375 4169 10362 4154 10314 4130 10327
TIME...MOT...LOC 0528Z 290DEG 27KT 4152 10355 

HAIL...1.25IN
WIND...60MPH
 
$$

Cox

427 
WWUS55 KCYS 140545
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1145 PM MDT Tue Jul 13 2021

NEC007-033-105-123-140600-
/O.CON.KCYS.SV.W.0098.000000T0000Z-210714T0600Z/
Cheyenne NE-Kimball NE-Morrill NE-Banner NE-
1145 PM MDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FOR NORTHWESTERN CHEYENNE...NORTHEASTERN KIMBALL...SOUTHWESTERN
MORRILL AND EASTERN BANNER COUNTIES...

At 1144 PM MDT, a severe thunderstorm was located 7 miles southwest
of Redington, or 23 miles northeast of Kimball, moving east at 25
mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
northwestern Cheyenne, northeastern Kimball, southwestern Morrill and
eastern Banner Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4145 10366 4165 10351 4154 10314 4130 10327
TIME...MOT...LOC 0544Z 285DEG 24KT 4151 10340 

HAIL...0.75IN
WIND...60MPH
 
$$

Cox

968 
WWUS55 KCYS 140555
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
1155 PM MDT Tue Jul 13 2021

NEC007-033-105-123-140604-
/O.EXP.KCYS.SV.W.0098.000000T0000Z-210714T0600Z/
Cheyenne NE-Kimball NE-Morrill NE-Banner NE-
1155 PM MDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHEYENNE...
NORTHEASTERN KIMBALL...SOUTHWESTERN MORRILL AND EASTERN BANNER
COUNTIES WILL EXPIRE AT MIDNIGHT 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 gusty
winds are still possible with this thunderstorm.

LAT...LON 4145 10366 4165 10351 4154 10314 4130 10327
TIME...MOT...LOC 0554Z 291DEG 30KT 4148 10330 

$$

Cox

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 13, 10:30 PM MDT	Special Weather Statement	CYS	Box Butte, Scotts Bluff	45 min
Jul 13, 10:54 PM MDT	Areal Flood Advisory	CYS	Scotts Bluff	17 min
Jul 13, 11:07 PM MDT	Flash Flood Warning	CYS	Scotts Bluff	2 hr
Jul 13, 11:08 PM MDT	Special Weather Statement	CYS	Banner	37 min
Jul 13, 11:31 PM MDT	Flash Flood Warning	CYS	Banner, Morrill, Scotts Bluff	2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.