Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 2, NWS Omaha, NE

June 11, 2021Richardson County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 11, 2021, 12:25 PM CDT for Richardson County, Nebraska. It was in force for 16 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, 12:25 PM CDT (17:25 UTC)
Expired: Jun 11, 2021, 12:41 PM CDT
In force: 16 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Richardson County, NE

The radar

The Topeka radar (KTWX), 119 km from the middle of the area, began a volume at 17:25 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, 8:30 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 5.4 hours before the alert went out and 118 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: 2135 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1019 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.2

Open this sounding in Storm Lab

The text

As transmitted.

556 
WFUS53 KOAX 111725
TOROAX
NEC147-111800-
/O.NEW.KOAX.TO.W.0002.210611T1725Z-210611T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Omaha/Valley Nebraska
1225 PM CDT Fri Jun 11 2021

The National Weather Service in Omaha has issued a

* Tornado Warning for...
  Southwestern Richardson County in southeastern Nebraska...

* Until 100 PM CDT.
    
* At 1224 PM CDT, a severe thunderstorm capable of producing a
  tornado was located 5 miles northeast of Bern, or 10 miles
  northwest of Sabetha, moving east at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  southwestern Richardson County, including the following
  locations... Camp Cornhusker and The Highway 75 And 8 Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4007 9600 4007 9576 4000 9578 4000 9601
TIME...MOT...LOC 1724Z 281DEG 24KT 4003 9592 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Mead

2 follow-up statements

427 
WWUS53 KOAX 111737
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
1237 PM CDT Fri Jun 11 2021

NEC147-111800-
/O.CON.KOAX.TO.W.0002.000000T0000Z-210611T1800Z/
Richardson NE-
1237 PM CDT Fri Jun 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 PM CDT FOR
SOUTHWESTERN RICHARDSON COUNTY...
    
At 1236 PM CDT, a severe thunderstorm capable of producing a tornado
was located 8 miles northeast of Bern, or 8 miles north of Sabetha,
moving east at 25 mph.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
southwestern Richardson County, including the following locations...
The Highway 75 And 8 Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4007 9589 4007 9576 4000 9578 4000 9591
TIME...MOT...LOC 1736Z 279DEG 22KT 4002 9584 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Mead

408 
WWUS53 KOAX 111741
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
1241 PM CDT Fri Jun 11 2021

NEC147-111750-
/O.CAN.KOAX.TO.W.0002.000000T0000Z-210611T1800Z/
Richardson NE-
1241 PM CDT Fri Jun 11 2021

...THE TORNADO WARNING FOR SOUTHWESTERN RICHARDSON COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 300 PM CDT for
southeastern Nebraska.

Remember, a Severe Thunderstorm Warning still remains in effect for
much of Richardson county until 100 PM CDT.

LAT...LON 4007 9589 4007 9576 4000 9578 4000 9591
TIME...MOT...LOC 1738Z 281DEG 24KT 4001 9581 

$$

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, 7:41 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Madison, Platte, Stanton	34 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

Nearby

Tornado Warnings in Nebraska, 2021 Every tornado warning in 2021 Tornadoes 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.