Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 4, NWS Hastings, NE

May 11, 2011Adams County, Nebraska

NWS Hastings, NE issued this tornado warning at May 11, 2011, 1:47 PM CDT for Adams County, Nebraska. It was in force for 28 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, 1:47 PM CDT (18:47 UTC)
Expired
May 11, 2011, 2:15 PM CDT
In force
28 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon

County Adams County, NE

The radar

The Grand Island radar (KUEX), 16 km from the middle of the area, began a volume at 18:46 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 11, 12:16 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 6.8 hours before the alert went out and 193 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, N. Platte/Lee Bi, NE at 12:00Z on 2011-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, N. Platte/Lee Bi, NE at 12:00Z on 2011-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 386 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1010 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
386 m²/s²
0-3 km storm-relative helicity
413 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

436 
WFUS53 KGID 111847
TORGID
NEC001-111915-
/O.NEW.KGID.TO.W.0004.110511T1847Z-110511T1915Z/

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

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ADAMS COUNTY IN SOUTH CENTRAL NEBRASKA...

* UNTIL 215 PM CDT

* AT 146 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A CONFIRMED TORNADO NEAR AYR...OR 14 MILES SOUTHWEST OF HASTINGS.
  DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTH AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  ROSELAND AROUND 155 PM CDT.

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 4054 9855 4053 9831 4035 9837 4035 9864
TIME...MOT...LOC 1848Z 198DEG 27KT 4041 9849
HAIL <.75IN

$$

FAY
3 follow-up statements
480 
WWUS53 KGID 111855
SVSGID

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

NEC001-111915-
/O.CON.KGID.TO.W.0004.000000T0000Z-110511T1915Z/
ADAMS NE-
155 PM CDT WED MAY 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL ADAMS COUNTY
UNTIL 215 PM CDT...

AT 151 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO.  THESE
DANGEROUS STORMS WERE LOCATED NEAR AYR...MOVING NORTHEAST AT 40 MPH.

THESE DANGEROUS STORMS WILL AFFECT MAINLY RURAL AREAS OF SOUTH
CENTRAL ADAMS COUNTY.

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 4054 9855 4053 9831 4035 9837 4035 9864
TIME...MOT...LOC 1855Z 205DEG 34KT 4048 9843 4053 9840
HAIL <.75IN

$$

FAY
342 
WWUS53 KGID 111904
SVSGID

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

NEC001-111915-
/O.CON.KGID.TO.W.0004.000000T0000Z-110511T1915Z/
ADAMS NE-
204 PM CDT WED MAY 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN ADAMS COUNTY
UNTIL 215 PM CDT...

AT 200 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED SOUTH OF HASTINGS...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...

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 4052 9847 4053 9831 4038 9836 4039 9851
TIME...MOT...LOC 1904Z 209DEG 33KT 4056 9835
HAIL <.75IN

$$
841 
WWUS53 KGID 111913
SVSGID

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

NEC001-111923-
/O.EXP.KGID.TO.W.0004.000000T0000Z-110511T1915Z/
ADAMS NE-
213 PM CDT WED MAY 11 2011

...THE TORNADO WARNING FOR CENTRAL ADAMS COUNTY WILL EXPIRE AT 215 PM
CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.  A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEAST ADAMS 
COUNTY UNTIL 230 PM CDT.

LAT...LON 4052 9847 4053 9831 4038 9836 4039 9851
TIME...MOT...LOC 1913Z 209DEG 33KT 4063 9830

$$

FAY

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 8:52 AM CDTSpecial Weather StatementGIDYork38 min
May 11, 12:48 PM CDTSpecial Weather StatementGIDFranklin27 min
May 11, 1:11 PM CDTSpecial Weather StatementGIDWebster49 min
May 11, 1:24 PM CDTSevere Thunderstorm WarningGIDNuckolls, Thayer51 min
May 11, 1:32 PM CDTSevere Thunderstorm WarningGIDAdams, Webster43 min
May 11, 1:59 PM CDTTornado WarningGIDAdams20 min
May 11, 2:08 PM CDTSevere Thunderstorm WarningGIDClay, Fillmore37 min
May 11, 2:22 PM CDTSevere Thunderstorm WarningGIDHamilton, York38 min
May 11, 2:41 PM CDTTornado WarningGIDYork24 min
May 11, 2:48 PM CDTSevere Thunderstorm WarningGIDHall, Hamilton, Howard, Merrick, Nance, Polk and 1 more42 min
May 11, 2:50 PM CDTTornado WarningGIDHamilton, Polk, York25 min
May 11, 2:58 PM CDTSevere Thunderstorm WarningGIDHamilton, York32 min
May 11, 3:03 PM CDTTornado WarningGIDHamilton, Merrick, Nance, Polk27 min
May 11, 3:14 PM CDTTornado WarningGIDPolk12 min
May 11, 3:23 PM CDTSevere Thunderstorm WarningGIDHamilton, Merrick, Nance, Polk40 min
May 11, 3:28 PM CDTTornado WarningGIDMerrick, Nance15 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.