Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 33, NWS Omaha, NE

June 11, 20215 counties in Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 11, 2021, 7:41 AM CDT for 5 counties in Nebraska. It was in force for 34 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 11, 2021, 7:41 AM CDT (12:41 UTC)
Expired: Jun 11, 2021, 8:15 AM CDT
In force: 34 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Butler County, NE, Colfax County, NE, Madison County, NE, Platte County, NE, Stanton County, NE

The radar

The Omaha radar (KOAX), 94 km from the middle of the area, began a volume at 12:40 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 11, 8:05 AM CDT	TSTM WND DMG	1 Wnw Columbus, NE	LARGE TRASH DUMPSTER BLOWN OVER. SHUTTERS BLOWN OFF HOME. WINDS ESTIMATED AT 60 MPH.

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
Jun 11, 5:36 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 0.7 hours before the alert went out and 94 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.

304 
WUUS53 KOAX 111241
SVROAX
NEC023-037-119-141-167-111315-
/O.NEW.KOAX.SV.W.0033.210611T1241Z-210611T1315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
741 AM CDT Fri Jun 11 2021

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Southeastern Madison County in northeastern Nebraska...
  Western Colfax County in northeastern Nebraska...
  Platte County in northeastern Nebraska...
  Northwestern Butler County in east central Nebraska...
  Southwestern Stanton County in northeastern Nebraska...

* Until 815 AM CDT.

* At 741 AM CDT, severe thunderstorms were located along a line
  extending from near Madison to near Duncan, 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.

* Severe thunderstorms will be near...
  Madison around 745 AM CDT.
  Creston around 755 AM CDT.
  Columbus around 800 AM CDT.

Other locations in the path of these severe thunderstorms include
Leigh and Bellwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4183 9760 4183 9719 4129 9720 4130 9737
      4140 9737 4137 9745 4136 9752 4134 9756
      4133 9759 4139 9760 4140 9766
TIME...MOT...LOC 1241Z 267DEG 31KT 4182 9750 4139 9755 

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

Mead

1 follow-up statement

912 
WWUS53 KOAX 111300
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
800 AM CDT Fri Jun 11 2021

NEC023-037-119-141-167-111315-
/O.CON.KOAX.SV.W.0033.000000T0000Z-210611T1315Z/
Madison NE-Colfax NE-Platte NE-Butler NE-Stanton NE-
800 AM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR SOUTHEASTERN MADISON...WESTERN COLFAX...PLATTE...NORTHWESTERN
BUTLER AND SOUTHWESTERN STANTON COUNTIES...

At 759 AM CDT, severe thunderstorms were located along a line
extending from 8 miles east of Madison to near Columbus, 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...
  Bellwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4180 9755 4183 9719 4129 9720 4130 9737
      4140 9737 4137 9745 4136 9752 4139 9758
      4142 9759
TIME...MOT...LOC 1259Z 267DEG 31KT 4183 9729 4140 9734 

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

Mead

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 5:27 AM CDT	Severe Thunderstorm Warning	OAX	Knox	33 min
Jun 11, 5:55 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Cedar, Knox, Pierce, Wayne	35 min
Jun 11, 6:45 AM CDT	Severe Thunderstorm Warning	OAX	Boone	30 min
Jun 11, 7:10 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Madison, Platte, Stanton, Thurston	35 min
Jun 11, 7:24 AM CDT	Severe Thunderstorm Warning	OAX	Platte	36 min
Jun 11, 7:34 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge, Thurston	26 min
Jun 11, 7:50 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	40 min
Jun 11, 8:13 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	47 min
Jun 11, 8:55 AM CDT	Special Weather Statement	OAX	Cass, Douglas, Sarpy	35 min
Jun 11, 9:00 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Lancaster, Saunders, Seward	30 min
Jun 11, 10:43 AM CDT	Areal Flood Advisory	OAX	Lancaster	3 hr
Jun 11, 10:51 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe	39 min
Jun 11, 11:26 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Richardson	49 min
Jun 11, 11:45 AM CDT	Severe Thunderstorm Warning	OAX	Pawnee, Richardson	45 min
Jun 11, 12:11 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	34 min
Jun 11, 12:19 PM CDT	Severe Thunderstorm Warning	OAX	Pawnee, Richardson	41 min
Jun 11, 12:25 PM CDT	Tornado Warning	OAX	Richardson	16 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.