Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 74, NWS Cheyenne, WY

July 3, 2021Cheyenne County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 3, 2021, 4:18 PM MDT for Cheyenne County, Nebraska. It was in force for 57 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: Jul 3, 2021, 4:18 PM MDT (22:18 UTC)
Expired: Jul 3, 2021, 5:15 PM MDT
In force: 57 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Cheyenne County, NE

The radar

The Cheyenne radar (KCYS), 129 km from the middle of the area, began a volume at 22:17 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.

What was reported inside it

Time	Report	Where	Remark
Jul 3, 4:30 PM MDT	HAIL 1	4 Ne Potter, NE	CROP DAMAGE AND TWO POWER POLE LINES WERE DOWNED. CORRECTED REPORT BASED ON RADAR IMAGERY.

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
Jul 3, 3:33 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.3 hours before the alert went out and 158 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: 2605 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

613 
WUUS55 KCYS 032218
SVRCYS
NEC033-032315-
/O.NEW.KCYS.SV.W.0074.210703T2218Z-210703T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
418 PM MDT Sat Jul 3 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cheyenne County in the Panhandle of Nebraska...

* Until 515 PM MDT.

* At 417 PM MDT, a severe thunderstorm was located near Potter, or 19
  miles east of Kimball, moving east at 5 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.

* This severe thunderstorm will remain over mainly rural areas of
  northwestern Cheyenne County.

This includes Interstate 80 in Nebraska between mile markers 45 and
47.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4125 10336 4139 10336 4139 10311 4118 10316
TIME...MOT...LOC 2217Z 291DEG 5KT 4131 10329 

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

Rubin

2 follow-up statements

433 
WWUS55 KCYS 032238
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
438 PM MDT Sat Jul 3 2021

NEC033-032315-
/O.CON.KCYS.SV.W.0074.000000T0000Z-210703T2315Z/
Cheyenne NE-
438 PM MDT Sat Jul 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MDT
FOR NORTHWESTERN CHEYENNE COUNTY...

At 437 PM MDT, a severe thunderstorm was located 7 miles northeast 
of Potter, or 18 miles northwest of Sidney, moving southeast at 5 
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.

This severe thunderstorm will remain over mainly rural areas of
northwestern Cheyenne County.

This includes Interstate 80 in Nebraska between mile markers 45 and
47.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4124 10334 4139 10332 4139 10311 4118 10316
TIME...MOT...LOC 2237Z 293DEG 6KT 4129 10324 

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

Rubin

962 
WWUS55 KCYS 032312
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
512 PM MDT Sat Jul 3 2021

NEC033-032322-
/O.EXP.KCYS.SV.W.0074.000000T0000Z-210703T2315Z/
Cheyenne NE-
512 PM MDT Sat Jul 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHEYENNE COUNTY
WILL EXPIRE AT 515 PM 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 small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
the Panhandle of Nebraska.

LAT...LON 4124 10334 4139 10332 4139 10311 4118 10316
TIME...MOT...LOC 2312Z 291DEG 5KT 4127 10318 

$$

Rubin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 3:01 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff, Sioux	30 min
Jul 3, 3:06 PM MDT	Special Weather Statement	CYS	Box Butte	39 min
Jul 3, 3:42 PM MDT	Special Weather Statement	CYS	Kimball	48 min
Jul 3, 3:48 PM MDT	Severe Thunderstorm Warning	CYS	Kimball	31 min
Jul 3, 3:51 PM MDT	Special Weather Statement	CYS	Banner	39 min
Jul 3, 3:57 PM MDT	Special Weather Statement	CYS	Cheyenne	48 min
Jul 3, 4:43 PM MDT	Special Weather Statement	CYS	Cheyenne	47 min
Jul 3, 4:43 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	47 min
Jul 3, 4:46 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes, Sioux	28 min
Jul 3, 5:03 PM MDT	Special Weather Statement	CYS	Morrill	42 min
Jul 3, 5:15 PM MDT	Special Weather Statement	CYS	Dawes	30 min
Jul 3, 5:21 PM MDT	Special Weather Statement	CYS	Cheyenne	39 min
Jul 3, 5:29 PM MDT	Special Weather Statement	CYS	Dawes	31 min
Jul 3, 5:40 PM MDT	Special Weather Statement	CYS	Morrill	50 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.