Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 16, NWS Hastings, NE

May 12, 20116 counties in Nebraska

NWS Hastings, NE issued this tornado warning at May 12, 2011, 5:20 PM CDT for 6 counties in Nebraska. It was in force for 40 min. 4 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 12, 2011, 5:20 PM CDT (22:20 UTC)
Expired: May 12, 2011, 6:00 PM CDT
In force: 40 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon

Counties Hall County, NE, Hamilton County, NE, Howard County, NE, Merrick County, NE, Polk County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 103 km from the middle of the area, began a volume at 22:23 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 12, 5:20 PM CDT	HAIL 1	3 E Polk, NE	GROUND IS WHITE.
May 12, 5:37 PM CDT	HAIL 1	7 Sw Chapman, NE	DIME TO QUARTER SIZE HAIL.
May 12, 5:43 PM CDT	HAIL 0.88	3 Ne Grand Island, NE
May 12, 6:05 PM CDT	HAIL 0.5	Grand Island, NE	DEPUTY EMA REPORTS PEA AND DIME SIZE HAIL IN NORTHWEST GRAND ISLAND.

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 12, 2:37 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.3 hours before the alert went out and 129 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: 353 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

535 
WFUS53 KGID 122220
TORGID
NEC079-081-093-121-143-185-122300-
/O.NEW.KGID.TO.W.0016.110512T2220Z-110512T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
520 PM CDT THU MAY 12 2011

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HALL COUNTY IN SOUTH CENTRAL NEBRASKA...
  NORTHERN HAMILTON COUNTY IN SOUTH CENTRAL NEBRASKA...
  SOUTHEASTERN HOWARD COUNTY IN CENTRAL NEBRASKA...
  MERRICK COUNTY IN CENTRAL NEBRASKA...
  POLK COUNTY IN EAST CENTRAL NEBRASKA...
  NORTHWESTERN YORK COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 600 PM CDT

* AT 518 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO. THESE
  DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  STROMSBURG TO MARQUETTE TO 5 MILES NORTH OF GRAND ISLAND...AND
  MOVING NORTH AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  STROMSBURG...MARQUETTE...CHAPMAN...POLK...ST. LIBORY...HORDVILLE...
  OSCEOLA...CENTRAL CITY...ARCHER AND CLARKS.

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 4135 9749 4105 9743 4092 9793 4092 9850
      4119 9849 4126 9797
TIME...MOT...LOC 2220Z 195DEG 6KT 4110 9763 4097 9796
          4100 9836
HAIL 1.00IN

$$

3 follow-up statements

057 
WWUS53 KGID 122231
SVSGID

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
531 PM CDT THU MAY 12 2011

NEC079-081-093-121-143-185-122300-
/O.CON.KGID.TO.W.0016.000000T0000Z-110512T2300Z/
HALL NE-HAMILTON NE-HOWARD NE-MERRICK NE-POLK NE-YORK NE-
531 PM CDT THU MAY 12 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN YORK...
POLK...MERRICK...SOUTHEASTERN HOWARD...NORTHERN HAMILTON AND
NORTHEASTERN HALL COUNTIES UNTIL 600 PM CDT...

AT 528 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING TORNADOES. THESE 
DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM STROMSBURG 
TO MARQUETTE TO ST. LIBORY...MOVING NORTH AT 15 MPH.

THERE HAVE BEEN MULTIPLE REPORTS OF FUNNEL CLOUDS WITH THIS LINE OF 
THUNDERSTORMS.

LOCATIONS IMPACTED INCLUDE...
  STROMSBURG...MARQUETTE...CHAPMAN...POLK...ST. LIBORY...HORDVILLE...
  OSCEOLA...CENTRAL CITY...ARCHER AND CLARKS.

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 4135 9749 4105 9743 4092 9793 4092 9850
      4119 9849 4126 9797
TIME...MOT...LOC 2231Z 195DEG 6KT 4112 9762 4099 9795
          4102 9835
HAIL 1.00IN

$$

511 
WWUS53 KGID 122246
SVSGID

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
546 PM CDT THU MAY 12 2011

NEC079-081-093-121-143-185-122300-
/O.CON.KGID.TO.W.0016.000000T0000Z-110512T2300Z/
HALL NE-HAMILTON NE-HOWARD NE-MERRICK NE-POLK NE-YORK NE-
546 PM CDT THU MAY 12 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN YORK...
POLK...MERRICK...SOUTHEASTERN HOWARD...NORTHERN HAMILTON AND
NORTHEASTERN HALL COUNTIES UNTIL 600 PM CDT...

AT 542 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING TORNADOES. THESE 
DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM STROMSBURG 
TO 5 MILES NORTH OF HAMPTON TO 5 MILES NORTHEAST OF GRAND 
ISLAND...MOVING NORTHWEST AT 10 MPH.

THERE HAVE BEEN MULTIPLE REPORTS OF FUNNEL CLOUDS WITH THIS LINE OF 
THUNDERSTORMS. 

LOCATIONS IMPACTED INCLUDE...
  STROMSBURG...MARQUETTE...CHAPMAN...POLK...ST. LIBORY...HORDVILLE...
  OSCEOLA...CENTRAL CITY...ARCHER AND CLARKS.

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 4135 9749 4105 9743 4092 9793 4092 9850
      4119 9849 4126 9797
TIME...MOT...LOC 2246Z 142DEG 8KT 4109 9758 4096 9791
          4099 9831
HAIL 1.00IN

$$

386 
WWUS53 KGID 122255
SVSGID

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
555 PM CDT THU MAY 12 2011

NEC079-081-093-121-143-185-122305-
/O.EXP.KGID.TO.W.0016.000000T0000Z-110512T2300Z/
HALL NE-HAMILTON NE-HOWARD NE-MERRICK NE-POLK NE-YORK NE-
555 PM CDT THU MAY 12 2011

...THE TORNADO WARNING FOR NORTHWESTERN YORK...POLK...MERRICK...
SOUTHEASTERN HOWARD...NORTHERN HAMILTON AND NORTHEASTERN HALL
COUNTIES WILL EXPIRE AT 600 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS 
WARNED AREA.

REMEMBER...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN 
HAMILTON...SOUTHWESTERN POLK...AND NORTHWESTERN YORK COUNTIES UNTIL 
630 PM CDT. 

LAT...LON 4135 9749 4105 9743 4092 9793 4092 9850
      4119 9849 4126 9797
TIME...MOT...LOC 2255Z 142DEG 8KT 4111 9760 4098 9793
          4101 9833

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 2:28 PM CDT	Special Weather Statement	GID	Furnas	32 min
May 12, 2:49 PM CDT	Special Weather Statement	GID	Sherman	26 min
May 12, 2:54 PM CDT	Severe Thunderstorm Warning	GID	Sherman	36 min
May 12, 3:28 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Sherman	32 min
May 12, 3:46 PM CDT	Special Weather Statement	GID	Buffalo	44 min
May 12, 3:56 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Sherman	34 min
May 12, 3:57 PM CDT	Tornado Warning	GID	Buffalo, Sherman	33 min
May 12, 4:05 PM CDT	Special Weather Statement	GID	Howard	25 min
May 12, 4:21 PM CDT	Severe Thunderstorm Warning	GID	Hall, Hamilton, Howard, Merrick, Polk, York	39 min
May 12, 4:25 PM CDT	Areal Flood Advisory	GID	Sherman	79 min
May 12, 4:27 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Sherman	48 min
May 12, 4:37 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Webster	38 min
May 12, 4:44 PM CDT	Severe Thunderstorm Warning	GID	Clay, Hamilton	46 min
May 12, 4:50 PM CDT	Tornado Warning	GID	Hamilton, Merrick	25 min
May 12, 4:53 PM CDT	Tornado Warning	GID	Hamilton, Merrick, Polk, York	37 min
May 12, 4:54 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, York	51 min
May 12, 4:59 PM CDT	Severe Thunderstorm Warning	GID	Hall, Howard, Merrick	46 min
May 12, 4:59 PM CDT	Tornado Warning	GID	Fillmore, Hamilton, York	31 min
May 12, 5:09 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Sherman	51 min
May 12, 5:11 PM CDT	Tornado Warning	GID	Hamilton, Merrick	34 min
May 12, 5:14 PM CDT	Special Weather Statement	GID	Webster	31 min
May 12, 5:19 PM CDT	Special Weather Statement	GID	Phelps	41 min
May 12, 5:24 PM CDT	Flash Flood Warning	GID	Hall, Howard, Merrick	6 hr
May 12, 5:40 PM CDT	Flash Flood Warning	GID	Sherman	6 hr
May 12, 5:50 PM CDT	Tornado Warning	GID	Hamilton, Polk, York	40 min
May 12, 5:54 PM CDT	Severe Thunderstorm Warning	GID	Hall, Hamilton, Howard, Merrick	41 min
May 12, 6:06 PM CDT	Special Weather Statement	GID	Kearney	39 min
May 12, 6:11 PM CDT	Severe Thunderstorm Warning	GID	Kearney	32 min
May 12, 6:20 PM CDT	Special Weather Statement	GID	Adams	25 min
May 12, 6:24 PM CDT	Flash Flood Warning	GID	Hamilton, Polk, York	6 hr
May 12, 6:24 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, Merrick, Nance, Polk, York	51 min
May 12, 6:29 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls	46 min
May 12, 6:37 PM CDT	Special Weather Statement	GID	Fillmore	38 min
May 12, 6:56 PM CDT	Tornado Warning	GID	Polk	34 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.