Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 14, NWS Hastings, NE

May 12, 2011Fillmore County, Hamilton County, York County, Nebraska

NWS Hastings, NE issued this tornado warning at May 12, 2011, 4:59 PM CDT for Fillmore County, Hamilton County, York County, Nebraska. It was in force for 31 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 12, 2011, 4:59 PM CDT (21:59 UTC)
Expired: May 12, 2011, 5:30 PM CDT
In force: 31 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon

Counties Fillmore County, NE, Hamilton County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 70 km from the middle of the area, began a volume at 22:00 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 12, 2:37 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 137 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.

419 
WFUS53 KGID 122159
TORGID
NEC059-081-185-122230-
/O.NEW.KGID.TO.W.0014.110512T2159Z-110512T2230Z/

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

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN FILLMORE COUNTY IN SOUTH CENTRAL NEBRASKA...
  SOUTHEASTERN HAMILTON COUNTY IN SOUTH CENTRAL NEBRASKA...
  WESTERN YORK COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 530 PM CDT

* AT 455 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 HAMPTON
  TO GENEVA...AND MOVING NORTHWEST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GENEVA...HENDERSON AND GRAFTON.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 340 AND 356.

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 4045 9779 4064 9783 4069 9782 4070 9784
      4087 9788 4097 9758 4048 9743
TIME...MOT...LOC 2159Z 125DEG 8KT 4088 9784 4050 9757
HAIL 1.00IN

$$

2 follow-up statements

751 
WWUS53 KGID 122213 RRA
SVSGID

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

NEC059-081-185-122230-
/O.CON.KGID.TO.W.0014.000000T0000Z-110512T2230Z/
FILLMORE NE-HAMILTON NE-YORK NE-
513 PM CDT THU MAY 12 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN YORK...
SOUTHEASTERN HAMILTON AND NORTHERN FILLMORE COUNTIES UNTIL 530 PM
CDT...

AT 509 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 BRADSHAW TO
GENEVA...MOVING NORTHWEST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
  GENEVA...LUSHTON...HENDERSON AND GRAFTON.

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 4045 9779 4064 9783 4069 9782 4070 9784
      4087 9788 4097 9758 4048 9743
TIME...MOT...LOC 2214Z 128DEG 9KT 4092 9781 4054 9754
HAIL 1.00IN

$$

277 
WWUS53 KGID 122228
SVSGID

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

NEC059-081-185-122237-
/O.EXP.KGID.TO.W.0014.000000T0000Z-110512T2230Z/
FILLMORE NE-HAMILTON NE-YORK NE-
528 PM CDT THU MAY 12 2011

...THE TORNADO WARNING FOR WESTERN YORK...SOUTHEASTERN HAMILTON AND
NORTHERN FILLMORE COUNTIES WILL EXPIRE AT 530 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN YORK AND 
NORTHERN HAMILTON COUNTIES UNTIL 600 PM CDT. 

ADDITIONAL SEVERE THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 10 PM CDT.

LAT...LON 4045 9779 4064 9783 4069 9782 4070 9784
      4087 9788 4097 9758 4048 9743
TIME...MOT...LOC 2227Z 128DEG 9KT 4094 9784 4056 9757

$$

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, 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, 5:20 PM CDT	Tornado Warning	GID	Hall, Hamilton, Howard, Merrick, Polk, York	40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.