Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 8, NWS Hastings, NE

May 11, 20114 counties in Nebraska

NWS Hastings, NE issued this tornado warning at May 11, 2011, 3:03 PM CDT for 4 counties in Nebraska. It was in force for 27 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, 3:03 PM CDT (20:03 UTC)
Expired
May 11, 2011, 3:30 PM CDT
In force
27 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon

Counties Hamilton County, NE, Merrick County, NE, Nance County, NE, Polk County, NE

The radar

The Omaha radar (KOAX), 114 km from the middle of the area, began a volume at 20:06 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

TimeReportWhereRemark
May 11, 3:32 PM CDTTSTM WND GST 70Genoa, NE70 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.

IssuedProductOfficeLasted
May 11, 12:16 PM CDTSevere Thunderstorm WatchSPC5 hr
May 11, 2:53 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.1 hours before the alert went out and 113 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 12:00Z on 2011-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 909 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 12:00Z on 2011-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939Sfc1 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
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.

222 
WFUS53 KGID 112003
TORGID
NEC081-121-125-143-112030-
/O.NEW.KGID.TO.W.0008.110511T2003Z-110511T2030Z/

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

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HAMILTON COUNTY IN SOUTH CENTRAL NEBRASKA...
  NORTHEASTERN MERRICK COUNTY IN CENTRAL NEBRASKA...
  SOUTHEASTERN NANCE COUNTY IN CENTRAL NEBRASKA...
  WEST CENTRAL POLK COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 330 PM CDT

* AT 301 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR CENTRAL CITY...OR 24 MILES NORTHEAST OF
  GRAND ISLAND...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CLARKS...SILVER CREEK AND 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 4133 9761 4105 9791 4116 9811 4149 9771
      4148 9770 4140 9770 4140 9760 4139 9759
TIME...MOT...LOC 2003Z 220DEG 36KT 4115 9799
HAIL <.75IN

$$
3 follow-up statements
184 
WWUS53 KGID 112014
SVSGID

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

NEC081-112023-
/O.CAN.KGID.TO.W.0008.000000T0000Z-110511T2030Z/
HAMILTON NE-
314 PM CDT WED MAY 11 2011

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF HAMILTON 
COUNTY.

LAT...LON 4133 9761 4113 9783 4117 9783 4111 9789
      4110 9793 4117 9809 4149 9771 4148 9770
      4140 9770 4140 9760 4139 9759
TIME...MOT...LOC 2013Z 220DEG 36KT 4123 9790

$$

NEC121-125-143-112030-
/O.CON.KGID.TO.W.0008.000000T0000Z-110511T2030Z/
MERRICK NE-NANCE NE-POLK NE-
314 PM CDT WED MAY 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL POLK...
SOUTHEASTERN NANCE AND NORTHEASTERN MERRICK COUNTIES UNTIL 330 PM
CDT...

AT 310 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR CLARKS...OR 29 MILES NORTHWEST OF YORK...
MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  CLARKS...SILVER CREEK AND 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 4133 9761 4113 9783 4117 9783 4111 9789
      4110 9793 4117 9809 4149 9771 4148 9770
      4140 9770 4140 9760 4139 9759
TIME...MOT...LOC 2013Z 220DEG 36KT 4123 9790
HAIL <.75IN

$$

FAY
794 
WWUS53 KGID 112020
SVSGID

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

NEC121-125-143-112030-
/O.CON.KGID.TO.W.0008.000000T0000Z-110511T2030Z/
MERRICK NE-NANCE NE-POLK NE-
320 PM CDT WED MAY 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL POLK...
SOUTHEASTERN NANCE AND NORTHEASTERN MERRICK COUNTIES UNTIL 330 PM
CDT...

AT 315 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR CLARKS...OR 30 MILES NORTHWEST OF YORK...
MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  SILVER CREEK AND 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 4133 9761 4119 9777 4125 9798 4149 9771
      4148 9770 4140 9770 4140 9760 4139 9759
TIME...MOT...LOC 2020Z 220DEG 36KT 4128 9784
HAIL <.75IN

$$

FAY
072 
WWUS53 KGID 112029
SVSGID

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

NEC121-125-143-112039-
/O.EXP.KGID.TO.W.0008.000000T0000Z-110511T2030Z/
MERRICK NE-NANCE NE-POLK NE-
329 PM CDT WED MAY 11 2011

...THE TORNADO WARNING FOR WEST CENTRAL POLK...SOUTHEASTERN NANCE AND
NORTHEASTERN MERRICK COUNTIES WILL EXPIRE AT 330 PM CDT...

A NEW TORNADO WARNING HAS BEEN ISSUED FOR EXTREME NORTHEASTERN 
MERRICK AND NORTHEASTERN NANCE COUNTY UNTIL 4 PM.

LAT...LON 4133 9761 4119 9777 4125 9798 4149 9771
      4148 9770 4140 9770 4140 9760 4139 9759
TIME...MOT...LOC 2029Z 220DEG 36KT 4135 9776

$$

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, 1:47 PM CDTTornado WarningGIDAdams28 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, 3:14 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.