Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 10, NWS Hastings, NE

May 11, 2011Merrick County, Nance County, Nebraska

NWS Hastings, NE issued this tornado warning at May 11, 2011, 3:28 PM CDT for Merrick County, Nance County, Nebraska. It was in force for 15 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 11, 2011, 3:28 PM CDT (20:28 UTC)
Expired: May 11, 2011, 3:43 PM CDT
In force: 15 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon

Counties Merrick County, NE, Nance County, NE

The radar

The Omaha radar (KOAX), 109 km from the middle of the area, began a volume at 20:29 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 11, 3:32 PM CDT	TSTM WND GST 70	Genoa, NE	70 MPH WINDS ESTIMATED AT THE AIRPORT

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 11, 12:16 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 11, 2:53 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.5 hours before the alert went out and 109 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: 909 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1123 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

753 
WFUS53 KGID 112028
TORGID
NEC121-125-112100-
/O.NEW.KGID.TO.W.0010.110511T2028Z-110511T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
328 PM CDT WED MAY 11 2011

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME NORTHEASTERN MERRICK COUNTY IN CENTRAL NEBRASKA...
  NORTHEASTERN NANCE COUNTY IN CENTRAL NEBRASKA...

* UNTIL 400 PM CDT

* AT 324 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR SILVER CREEK...OR 17 MILES WEST OF
  COLUMBUS...AND MOVING NORTH AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GENOA.

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 4131 9760 4130 9768 4132 9780 4153 9776
      4153 9771 4152 9770 4140 9770 4140 9760
      4139 9759 4133 9759
TIME...MOT...LOC 2028Z 190DEG 35KT 4140 9766
HAIL <.75IN

$$

2 follow-up statements

193 
WWUS53 KGID 112033
SVSGID

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
333 PM CDT WED MAY 11 2011

NEC121-112043-
/O.CAN.KGID.TO.W.0010.000000T0000Z-110511T2100Z/
MERRICK NE-
333 PM CDT WED MAY 11 2011

...THE TORNADO WARNING FOR EXTREME NORTHEASTERN MERRICK COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4152 9770 4140 9770 4139 9770 4136 9770
      4136 9779 4153 9776 4153 9771
TIME...MOT...LOC 2033Z 191DEG 24KT 4141 9771

$$

NEC125-112100-
/O.CON.KGID.TO.W.0010.000000T0000Z-110511T2100Z/
NANCE NE-
333 PM CDT WED MAY 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN NANCE COUNTY
UNTIL 400 PM CDT...

AT 329 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR GENOA...OR 19 MILES WEST OF COLUMBUS...MOVING
NORTH AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  GENOA.

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 4152 9770 4140 9770 4139 9770 4136 9770
      4136 9779 4153 9776 4153 9771
TIME...MOT...LOC 2033Z 191DEG 24KT 4141 9771
HAIL <.75IN

$$

FAY

970 
WWUS53 KGID 112043
SVSGID

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
343 PM CDT WED MAY 11 2011

NEC125-112053-
/O.CAN.KGID.TO.W.0010.000000T0000Z-110511T2100Z/
NANCE NE-
343 PM CDT WED MAY 11 2011

...THE TORNADO WARNING FOR NORTHEASTERN NANCE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4152 9770 4140 9770 4139 9770 4136 9770
      4136 9779 4153 9776 4153 9771
TIME...MOT...LOC 2043Z 191DEG 24KT 4148 9769

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 8:52 AM CDT	Special Weather Statement	GID	York	38 min
May 11, 12:48 PM CDT	Special Weather Statement	GID	Franklin	27 min
May 11, 1:11 PM CDT	Special Weather Statement	GID	Webster	49 min
May 11, 1:24 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	51 min
May 11, 1:32 PM CDT	Severe Thunderstorm Warning	GID	Adams, Webster	43 min
May 11, 1:47 PM CDT	Tornado Warning	GID	Adams	28 min
May 11, 1:59 PM CDT	Tornado Warning	GID	Adams	20 min
May 11, 2:08 PM CDT	Severe Thunderstorm Warning	GID	Clay, Fillmore	37 min
May 11, 2:22 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, York	38 min
May 11, 2:41 PM CDT	Tornado Warning	GID	York	24 min
May 11, 2:48 PM CDT	Severe Thunderstorm Warning	GID	Hall, Hamilton, Howard, Merrick, Nance, Polk and 1 more	42 min
May 11, 2:50 PM CDT	Tornado Warning	GID	Hamilton, Polk, York	25 min
May 11, 2:58 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, York	32 min
May 11, 3:03 PM CDT	Tornado Warning	GID	Hamilton, Merrick, Nance, Polk	27 min
May 11, 3:14 PM CDT	Tornado Warning	GID	Polk	12 min
May 11, 3:23 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, Merrick, Nance, Polk	40 min

Nearby

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