Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 18, NWS Omaha, NE

May 27, 2012Cuming County, Stanton County, Wayne County, Nebraska

NWS Omaha, NE issued this tornado warning at May 27, 2012, 8:38 PM CDT for Cuming County, Stanton County, Wayne County, Nebraska. It was in force for 22 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
May 27, 2012, 8:38 PM CDT (01:38 UTC)
Expired
May 27, 2012, 9:00 PM CDT
In force
22 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon

Counties Cuming County, NE, Stanton County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 95 km from the middle of the area, began a volume at 01:40 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 27, 3:42 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.6 hours before the alert went out and 95 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 00:00Z on 2012-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 849 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 00:00Z on 2012-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.19395878Sfc1 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
849 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
2094 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

174 
WFUS53 KOAX 280138
TOROAX
NEC039-167-179-280215-
/O.NEW.KOAX.TO.W.0018.120528T0138Z-120528T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
838 PM CDT SUN MAY 27 2012

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTHEASTERN WAYNE COUNTY IN NORTHEAST NEBRASKA...
  NORTHWESTERN CUMING COUNTY IN NORTHEAST NEBRASKA...
  STANTON COUNTY IN NORTHEAST NEBRASKA...

* UNTIL 915 PM CDT

* AT 836 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 
  MILES NORTH OF CLARKSON...OR 19 MILES SOUTHEAST OF NORFOLK...AND 
  MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  STANTON...WISNER AND PILGER. 

THIS INCLUDES HIGHWAY 275 BETWEEN MILE MARKERS 87 AND 101.

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 4216 9696 4203 9688 4175 9708 4183 9729
      4209 9720
TIME...MOT...LOC 0136Z 203DEG 49KT 4183 9715 

$$

ZAPOTOCNY
2 follow-up statements
324 
WWUS53 KOAX 280151
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
851 PM CDT SUN MAY 27 2012

NEC039-167-179-280215-
/O.CON.KOAX.TO.W.0018.000000T0000Z-120528T0215Z/
WAYNE NE-CUMING NE-STANTON NE-
851 PM CDT SUN MAY 27 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR 
EXTREME SOUTHEASTERN WAYNE...EXTREME NORTHWESTERN CUMING AND 
EXTREME NORTHEASTERN STANTON COUNTIES...

AT 845 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
NEAR PILGER...OR 19 MILES EAST OF NORFOLK...MOVING NORTH AT 55 MPH. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF 
EXTREME SOUTHEASTERN WAYNE...EXTREME NORTHWESTERN CUMING
AND EXTREME NORTHEASTERN STANTON COUNTIES.

THIS INCLUDES HIGHWAY 275 NEAR MILE MARKER 99.

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 4206 9691 4201 9696 4208 9714 4211 9713
      4216 9696
TIME...MOT...LOC 0145Z 201DEG 59KT 4207 9704 

$$

ZAPOTOCNY/SMITH
754 
WWUS53 KOAX 280200
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
900 PM CDT SUN MAY 27 2012

NEC167-039-179-280225-
/O.CAN.KOAX.TO.W.0018.000000T0000Z-120528T0215Z/
WAYNE NE-CUMING NE-STANTON NE-
900 PM CDT SUN MAY 27 2012

...THE TORNADO WARNING FOR EXTREME SOUTHEASTERN WAYNE...EXTREME 
NORTHWESTERN CUMING AND EXTREME NORTHEASTERN STANTON COUNTIES IS 
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA. 
THEREFORE THE WARNING HAS BEEN CANCELLED. 

LAT...LON 4206 9691 4201 9696 4208 9714 4211 9713
      4216 9696
TIME...MOT...LOC 0159Z 203DEG 49KT 4207 9704 

$$

ZAPOTOCNY/SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 7:05 PM CDTSevere Thunderstorm WarningOAXButler, Lancaster, Saunders, Seward40 min
May 27, 8:16 PM CDTSpecial Weather StatementOAXMadison, Stanton44 min
May 27, 8:22 PM CDTSevere Thunderstorm WarningOAXMadison, Platte, Stanton23 min
May 27, 8:26 PM CDTFlash Flood WarningOAXCedar, Madison, Pierce, Stanton, Wayne4 hr
May 27, 8:34 PM CDTFlash Flood WarningOAXBoone, Madison, Platte, Stanton4 hr
May 27, 8:49 PM CDTSevere Thunderstorm WarningOAXColfax, Platte, Stanton29 min
May 27, 8:59 PM CDTSevere Thunderstorm WarningOAXCedar, Wayne16 min
May 27, 9:21 PM CDTFlash Flood WarningOAXPlatte4 hr
May 27, 9:24 PM CDTAreal Flood AdvisoryOAXPlatte4 hr
May 27, 9:25 PM CDTAreal Flood AdvisoryOAXStanton4 hr
May 27, 9:29 PM CDTSevere Thunderstorm WarningOAXButler, Colfax, Platte12 min
May 27, 9:50 PM CDTAreal Flood AdvisoryOAXColfax4 hr
May 27, 11:39 PM CDTSpecial Weather StatementOAXCass, Douglas, Sarpy36 min
May 28, 1:17 AM CDTSpecial Weather StatementOAXButler, Lancaster, Saunders28 min

Nearby

Tornado Warnings in Nebraska, 2012Every tornado warning in 2012Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.