Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 15, NWS Omaha, NE

May 27, 2012Boone County, Nebraska

NWS Omaha, NE issued this tornado warning at May 27, 2012, 5:36 PM CDT for Boone County, Nebraska. It was in force for 39 min. 2 reports 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 27, 2012, 5:36 PM CDT (22:36 UTC)
Expired: May 27, 2012, 6:15 PM CDT
In force: 39 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

County Boone County, NE

The radar

The Omaha radar (KOAX), 148 km from the middle of the area, began a volume at 22:36 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

Time	Report	Where	Remark
May 27, 5:48 PM CDT	HAIL 1.5	Primrose, NE	TIME ESTIMATED
May 27, 6:05 PM CDT	TORNADO	7 Nw Newman Grove, 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.

Issued	Product	Office	Lasted
May 27, 3:42 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.6 hours before the alert went out and 148 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: 1034 J/kg
Mixed-layer CIN: -295 J/kg
Mixed-layer LCL: 1208 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 222 m²/s²
0-3 km storm-relative helicity: 245 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.

291 
WFUS53 KOAX 272236
TOROAX
NEC011-272315-
/O.NEW.KOAX.TO.W.0015.120527T2236Z-120527T2315Z/

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

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  BOONE COUNTY IN NORTHEAST NEBRASKA...

* UNTIL 615 PM CDT

* AT 525 PM CDT...A TORNADO WAS REPORTED WITH THIS STORM WOLBACH. 
  THIS DANGEROUS STORM WAS LOCATED NEAR WOLBACH...OR 37 MILES NORTH 
  OF GRAND ISLAND...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ALBION...CEDAR RAPIDS...PETERSBURG AND PRIMROSE. 

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 4173 9829 4190 9807 4183 9785 4168 9783
      4153 9799 4151 9802 4148 9818 4148 9829
TIME...MOT...LOC 2232Z 233DEG 40KT 4146 9838 

$$

SMITH/ZAPOTOCNY

2 follow-up statements

718 
WWUS53 KOAX 272247
SVSOAX

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

NEC011-272315-
/O.CON.KOAX.TO.W.0015.000000T0000Z-120527T2315Z/
BOONE NE-
547 PM CDT SUN MAY 27 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR BOONE 
COUNTY...

AT 543 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
NEAR PRIMROSE MOVING NORTHEAST AT 45 MPH. 

LOCATIONS IMPACTED INCLUDE...
ALBION...CEDAR RAPIDS...PETERSBURG AND PRIMROSE. 

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 4173 9829 4190 9807 4190 9805 4183 9786
      4179 9785 4159 9802 4151 9822 4156 9829
TIME...MOT...LOC 2243Z 223DEG 40KT 4161 9825 

$$

SMITH/ZAPOTOCNY

119 
WWUS53 KOAX 272307
SVSOAX

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

NEC011-272325-
/O.EXP.KOAX.TO.W.0015.000000T0000Z-120527T2315Z/
BOONE NE-
607 PM CDT SUN MAY 27 2012

...THE TORNADO WARNING FOR BOONE COUNTY WILL EXPIRE AT 615 PM CDT...

THE TORNADO WARNING THAT WAS PREVIOUSLY IN EFFECT HAS BEEN 
REISSUED FOR BOONE COUNTY PLEASE REFER TO THAT BULLETIN FOR THE 
LATEST SEVERE WEATHER INFORMATION. 

REMEMBER...A TORNADO WARNING STILL REMAINS IN EFFECT FOR A PORTION 
OF BOONE AND MADISON COUNTY.

LAT...LON 4173 9829 4190 9807 4190 9805 4183 9786
      4179 9785 4159 9802 4151 9822 4156 9829
TIME...MOT...LOC 2306Z 233DEG 40KT 4161 9825 

$$

SMITH/ZAPOTOCNY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 3:42 AM CDT	Flash Flood Watch	OAX	Burt, Cuming, Thurston	21 hr
May 27, 4:15 PM CDT	Special Weather Statement	OAX	Stanton	30 min
May 27, 4:39 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Stanton, Thurston, Wayne	47 min
May 27, 4:41 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone	34 min
May 27, 5:13 PM CDT	Tornado Warning	OAX	Antelope, Pierce	29 min
May 27, 5:16 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	44 min
May 27, 5:24 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox, Madison, Pierce, Wayne	51 min
May 27, 5:30 PM CDT	Tornado Warning	OAX	Antelope, Pierce	30 min
May 27, 5:43 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	47 min
May 27, 5:47 PM CDT	Flash Flood Warning	OAX	Antelope, Boone, Pierce	3 hr
May 27, 5:57 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson, Saline, Seward	48 min
May 27, 6:00 PM CDT	Tornado Warning	OAX	Boone, Madison, Platte	30 min
May 27, 6:04 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison, Pierce	26 min
May 27, 6:06 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Pierce, Wayne	39 min
May 27, 6:08 PM CDT	Areal Flood Advisory	OAX	Antelope, Pierce	3 hr
May 27, 6:19 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Seward	26 min
May 27, 6:19 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Platte	26 min
May 27, 6:28 PM CDT	Tornado Warning	OAX	Madison, Pierce, Stanton	32 min
May 27, 6:32 PM CDT	Severe Thunderstorm Warning	OAX	Madison, Pierce	28 min
May 27, 6:42 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison, Platte	33 min
May 27, 6:46 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Saunders	33 min
May 27, 6:48 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Lancaster, Saline, Saunders, Seward	57 min
May 27, 6:53 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Pierce, Stanton, Thurston, Wayne	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.