Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 10, NWS Omaha, NE

May 23, 2012Butler County, Seward County, Nebraska

NWS Omaha, NE issued this tornado warning at May 23, 2012, 7:06 PM CDT for Butler County, Seward County, Nebraska. It was in force for 13 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: May 23, 2012, 7:06 PM CDT (00:06 UTC)
Expired: May 23, 2012, 7:19 PM CDT
In force: 13 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

Counties Butler County, NE, Seward County, NE

The radar

The Omaha radar (KOAX), 64 km from the middle of the area, began a volume at 00:09 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
May 23, 7:10 PM CDT	TSTM WND DMG	3 Se Dwight, NE	TREES AND POWER LINES BLOWN DOWN NAR COUNTY ROAD 21 AND ROADS P AND U.

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
May 23, 4:07 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.1 hours before the alert went out and 64 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: 1035 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2387 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

844 
WFUS53 KOAX 240006
TOROAX
NEC023-159-240030-
/O.NEW.KOAX.TO.W.0010.120524T0006Z-120524T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
706 PM CDT WED MAY 23 2012

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME NORTHEASTERN SEWARD COUNTY IN SOUTHEAST NEBRASKA...
  EXTREME SOUTHEASTERN BUTLER COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 730 PM CDT

* AT 704 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
  NEAR BEE...OR 23 MILES NORTHWEST OF LINCOLN...AND MOVING NORTHEAST 
  AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BEE.

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 IN A MOBILE 
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND 
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4101 9714 4108 9701 4108 9691 4105 9691
      4095 9705
TIME...MOT...LOC 0004Z 232DEG 27KT 4101 9706 

$$

DEE

1 follow-up statement

934 
WWUS53 KOAX 240019
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
719 PM CDT WED MAY 23 2012

NEC159-023-240040-
/O.CAN.KOAX.TO.W.0010.000000T0000Z-120524T0030Z/
SEWARD NE-BUTLER NE-
719 PM CDT WED MAY 23 2012

...THE TORNADO WARNING FOR EXTREME NORTHEASTERN SEWARD AND EXTREME 
SOUTHEASTERN BUTLER COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA. 
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER SMALL HAIL IS 
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4101 9714 4108 9701 4108 9691 4105 9691
      4095 9705
TIME...MOT...LOC 0019Z 232DEG 27KT 4101 9706 

$$

DEE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:12 PM CDT	Tornado Warning	OAX	Lancaster, Saunders	33 min
May 23, 7:13 PM CDT	Special Weather Statement	OAX	Dodge	47 min
May 23, 7:16 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Saunders	44 min
May 23, 7:35 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	40 min
May 23, 7:51 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Saunders, Washington	39 min
May 23, 8:24 PM CDT	Severe Thunderstorm Warning	OAX	Washington	36 min
May 23, 8:30 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	30 min
May 23, 8:42 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	33 min
May 23, 8:47 PM CDT	Special Weather Statement	OAX	Knox	28 min
May 23, 8:56 PM CDT	Special Weather Statement	OAX	Saunders	34 min
May 23, 8:58 PM CDT	Special Weather Statement	OAX	Lancaster	47 min
May 23, 9:13 PM CDT	Special Weather Statement	OAX	Douglas, Sarpy	47 min
May 23, 9:21 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Saunders	39 min
May 23, 9:35 PM CDT	Special Weather Statement	OAX	Antelope, Cedar, Knox, Pierce	55 min
May 23, 9:43 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox, Pierce	32 min
May 23, 9:57 PM CDT	Special Weather Statement	OAX	Sarpy	33 min
May 23, 10:23 PM CDT	Special Weather Statement	OAX	Antelope, Boone, Madison, Pierce, Platte	67 min
May 23, 10:42 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Colfax, Madison, Platte, Stanton	48 min
May 23, 11:38 PM CDT	Special Weather Statement	OAX	Colfax, Cuming	67 min
May 24, 12:19 AM CDT	Special Weather Statement	OAX	Boone	116 min
May 24, 12:50 AM CDT	Special Weather Statement	OAX	Madison, Platte, Stanton	25 min
May 24, 1:02 AM CDT	Areal Flood Advisory	OAX	Boone, Platte	3 hr
May 24, 1:35 AM CDT	Special Weather Statement	OAX	Butler, Colfax, Platte	55 min
May 24, 2:02 AM CDT	Areal Flood Advisory	OAX	Cuming, Thurston	3 hr
May 24, 3:23 AM CDT	Areal Flood Advisory	OAX	Antelope, Boone, Cedar, Knox, Pierce	4 hr
May 24, 4:42 PM CDT	Special Weather Statement	OAX	Boone, Madison	48 min
May 24, 5:26 PM CDT	Special Weather Statement	OAX	Stanton	49 min
May 24, 5:40 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Madison, Platte, Stanton	35 min
May 24, 5:55 PM CDT	Tornado Warning	OAX	Colfax, Platte	22 min
May 24, 6:23 PM CDT	Special Weather Statement	OAX	Dodge	37 min

Nearby

Tornado Warnings in Nebraska, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.