Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 2, NWS Omaha, NE

March 22, 2011Burt County, Thurston County, Nebraska

NWS Omaha, NE issued this tornado warning at Mar 22, 2011, 4:36 PM CDT for Burt County, Thurston County, Nebraska. It was in force for 24 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
Mar 22, 2011, 4:36 PM CDT (21:36 UTC)
Expired
Mar 22, 2011, 5:00 PM CDT
In force
24 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon

Counties Burt County, NE, Thurston County, NE

The radar

The Omaha radar (KOAX), 68 km from the middle of the area, began a volume at 21:36 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

TimeReportWhereRemark
Mar 22, 4:43 PM CDTTORNADO6 S Craig, NE

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.

IssuedProductOfficeLasted
Mar 22, 2:03 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.6 hours before the alert went out and 68 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2011-03-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 486 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2011-03-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 477 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
486 J/kg
Mixed-layer CIN
-475 J/kg
Mixed-layer LCL
777 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
477 m²/s²
0-3 km storm-relative helicity
501 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

237 
WFUS53 KOAX 222136
TOROAX
NEC021-173-222200-
/O.NEW.KOAX.TO.W.0002.110322T2136Z-110322T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
436 PM CDT TUE MAR 22 2011

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BURT COUNTY IN EAST CENTRAL NEBRASKA...
  SOUTHEASTERN THURSTON COUNTY IN NORTHEAST NEBRASKA...

* UNTIL 500 PM CDT

* AT 431 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR UEHLING...OR 37 MILES NORTHWEST OF OMAHA...
  AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CRAIG...DECATUR...MACY...SUMMIT LAKE STATE RECREATION AREA AND
  OAKLAND.

THE WARNED AREA INCLUDES HIGHWAY 77 IN NEBRASKA BETWEEN MILE MARKERS
136 AND 142.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4218 9635 4207 9628 4205 9627 4201 9624
      4200 9624 4199 9623 4187 9614 4168 9635
      4168 9637 4174 9645 4175 9652
TIME...MOT...LOC 2136Z 208DEG 39KT 4176 9639

$$

FOBERT
2 follow-up statements
194 
WWUS53 KOAX 222141
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
441 PM CDT TUE MAR 22 2011

NEC021-173-222200-
/O.CON.KOAX.TO.W.0002.000000T0000Z-110322T2200Z/
BURT NE-THURSTON NE-
441 PM CDT TUE MAR 22 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN THURSTON AND
CENTRAL BURT COUNTIES UNTIL 500 PM CDT...

AT 441 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR CRAIG...OR 40 MILES NORTHWEST OF OMAHA...
MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  DECATUR AND MACY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4218 9635 4205 9628 4201 9624 4200 9624
      4187 9614 4168 9635 4168 9637 4174 9645
TIME...MOT...LOC 2142Z 208DEG 39KT 4179 9635

$$

FOBERT
305 
WWUS53 KOAX 222156
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
456 PM CDT TUE MAR 22 2011

NEC021-173-222206-
/O.EXP.KOAX.TO.W.0002.000000T0000Z-110322T2200Z/
BURT NE-THURSTON NE-
456 PM CDT TUE MAR 22 2011

...THE TORNADO WARNING FOR SOUTHEASTERN THURSTON AND CENTRAL BURT
COUNTIES WILL EXPIRE AT 500 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 9 PM.

LAT...LON 4218 9635 4205 9628 4201 9624 4200 9624
      4187 9614 4168 9635 4168 9637 4174 9645
TIME...MOT...LOC 2156Z 208DEG 39KT 4186 9624

$$

FOBERT

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 22, 3:19 PM CDTSevere Thunderstorm WarningOAXStanton, Wayne28 min
Mar 22, 3:21 PM CDTSevere Thunderstorm WarningOAXButler, Lancaster, Saunders, Seward24 min
Mar 22, 3:43 PM CDTSevere Thunderstorm WarningOAXJohnson, Nemaha, Otoe32 min
Mar 22, 3:54 PM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Dodge, Thurston51 min
Mar 22, 4:10 PM CDTSevere Thunderstorm WarningOAXCass, Otoe50 min
Mar 22, 4:11 PM CDTSevere Thunderstorm WarningOAXDodge, Douglas, Saunders, Washington49 min
Mar 22, 4:48 PM CDTSevere Thunderstorm WarningOAXWashington42 min

Nearby

Tornado Warnings in Nebraska, 2011Every tornado warning in 2011Tornadoes in 2011

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.