Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 6, NWS Hastings, NE

May 11, 2011York County, Nebraska

NWS Hastings, NE issued this tornado warning at May 11, 2011, 2:41 PM CDT for York County, Nebraska. It was in force for 24 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 11, 2011, 2:41 PM CDT (19:41 UTC)
Expired: May 11, 2011, 3:05 PM CDT
In force: 24 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon

County York County, NE

The radar

The Grand Island radar (KUEX), 96 km from the middle of the area, began a volume at 19:42 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.

Issued	Product	Office	Lasted
May 11, 12:16 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 7.7 hours before the alert went out and 115 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.

606 
WFUS53 KGID 111941
TORGID
NEC185-112015-
/O.NEW.KGID.TO.W.0006.110511T1941Z-110511T2015Z/

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

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  YORK COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 315 PM CDT

* AT 238 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR YORK. DOPPLER
  RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  YORK...BENEDICT...GRESHAM AND THAYER.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 342 AND 354.

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 4105 9768 4103 9740 4076 9762 4081 9783
TIME...MOT...LOC 1941Z 205DEG 16KT 4086 9767
HAIL 1.00IN

$$

BRYANT

2 follow-up statements

950 
WWUS53 KGID 111952
SVSGID

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

NEC185-112015-
/O.CON.KGID.TO.W.0006.000000T0000Z-110511T2015Z/
YORK NE-
252 PM CDT WED MAY 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN YORK COUNTY UNTIL
315 PM CDT...

AT 247 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR YORK...MOVING NORTH AT 25 MPH.

THIS DANGEROUS STORM WILL BE NEAR...
  BENEDICT AROUND 310 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS DANGEROUS STORM INCLUDE THAYER.

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 4103 9740 4085 9754 4090 9777 4105 9768
      4105 9764
TIME...MOT...LOC 1952Z 186DEG 20KT 4091 9758
HAIL 1.00IN

$$

FAY

456 
WWUS53 KGID 112005
SVSGID

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

NEC185-112015-
/O.CAN.KGID.TO.W.0006.000000T0000Z-110511T2015Z/
YORK NE-
305 PM CDT WED MAY 11 2011

...THE TORNADO WARNING FOR NORTHERN YORK COUNTY IS CANCELLED...

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

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR YORK 
COUNTY UNTIL 330 PM CDT.

LAT...LON 4103 9740 4085 9754 4090 9777 4105 9768
      4105 9764
TIME...MOT...LOC 2005Z 186DEG 20KT 4098 9757

$$

BRYANT

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, 2:48 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
May 11, 3:28 PM CDT	Tornado Warning	GID	Merrick, Nance	15 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.