Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 65, NWS Hastings, NE

June 11, 2021Merrick County, Nance County, Polk County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 11, 2021, 7:31 AM CDT for Merrick County, Nance County, Polk County, Nebraska. It was in force for 29 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: Jun 11, 2021, 7:31 AM CDT (12:31 UTC)
Expired: Jun 11, 2021, 8:00 AM CDT
In force: 29 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Merrick County, NE, Nance County, NE, Polk County, NE

The radar

The Omaha radar (KOAX), 102 km from the middle of the area, began a volume at 12:34 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
Jun 11, 5:36 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 0.5 hours before the alert went out and 102 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: 2132 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

126 
WUUS53 KGID 111231
SVRGID
NEC121-125-143-111300-
/O.NEW.KGID.SV.W.0065.210611T1231Z-210611T1300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Hastings NE
731 AM CDT Fri Jun 11 2021

The National Weather Service in Hastings has issued a

* Severe Thunderstorm Warning for...
  East central Nance County in central Nebraska...
  Northeastern Merrick County in central Nebraska...
  Northern Polk County in east central Nebraska...

* Until 800 AM CDT.

* At 731 AM CDT, a severe thunderstorm was located over Silver Creek,
  or 20 miles west of Columbus, moving east at 30 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 be near...
  Silver Creek around 735 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4126 9743 4125 9779 4139 9781 4141 9770
      4140 9770 4139 9760 4133 9760 4134 9757
      4136 9752 4137 9751 4137 9744
TIME...MOT...LOC 1231Z 254DEG 27KT 4132 9772 

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

Thies

2 follow-up statements

520 
WWUS53 KGID 111246
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
746 AM CDT Fri Jun 11 2021

NEC125-111255-
/O.CAN.KGID.SV.W.0065.000000T0000Z-210611T1300Z/
Nance NE-
746 AM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL NANCE 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 1100 AM CDT for
central and east central Nebraska.

LAT...LON 4125 9771 4140 9770 4139 9760 4133 9760
      4134 9757 4136 9752 4137 9751 4137 9744
      4126 9743
TIME...MOT...LOC 1245Z 261DEG 25KT 4132 9760 

$$

NEC121-143-111300-
/O.CON.KGID.SV.W.0065.000000T0000Z-210611T1300Z/
Merrick NE-Polk NE-
746 AM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CDT
FOR NORTHEASTERN MERRICK AND NORTHEASTERN POLK COUNTIES...

At 745 AM CDT, a severe thunderstorm was located near Silver Creek,
or 14 miles southwest of Columbus, moving east at 30 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
northeastern Merrick and northeastern Polk Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4125 9771 4140 9770 4139 9760 4133 9760
      4134 9757 4136 9752 4137 9751 4137 9744
      4126 9743
TIME...MOT...LOC 1245Z 261DEG 25KT 4132 9760 

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

Thies

016 
WWUS53 KGID 111257
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
757 AM CDT Fri Jun 11 2021

NEC121-143-111306-
/O.EXP.KGID.SV.W.0065.000000T0000Z-210611T1300Z/
Merrick NE-Polk NE-
757 AM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MERRICK AND
NORTHEASTERN POLK COUNTIES WILL EXPIRE AT 800 AM CDT...
                
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 1100 AM CDT for
central and east central Nebraska.

LAT...LON 4125 9771 4140 9770 4139 9760 4133 9760
      4134 9757 4136 9752 4137 9751 4137 9744
      4126 9743
TIME...MOT...LOC 1256Z 254DEG 27KT 4134 9751 

$$

Thies

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 6:52 AM CDT	Special Weather Statement	GID	Nance	23 min
Jun 11, 7:11 AM CDT	Special Weather Statement	GID	Hamilton, Merrick, Polk, York	49 min
Jun 11, 7:18 AM CDT	Special Weather Statement	GID	Nance	27 min
Jun 11, 8:00 AM CDT	Special Weather Statement	GID	Polk, York	30 min
Jun 11, 8:32 AM CDT	Special Weather Statement	GID	York	13 min
Jun 11, 8:51 AM CDT	Special Weather Statement	GID	York	24 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.