Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 91, NWS North Platte, NE

May 19, 2012Frontier County, Hayes County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 19, 2012, 1:58 PM CDT for Frontier County, Hayes County, Lincoln County, Nebraska. It was in force for 47 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 19, 2012, 1:58 PM CDT (18:58 UTC)
Expired: May 19, 2012, 2:45 PM CDT
In force: 47 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Frontier County, NE, Hayes County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 147 km from the middle of the area, began a volume at 18:58 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 19, 1:58 PM CDT	HAIL 1.25	11 Ese Hayes Center, NE	GROUND COVERED WHITE WITH HAIL.
May 19, 2:07 PM CDT	HAIL 1	13 E Hayes Center, NE
May 19, 2:13 PM CDT	HAIL 1	8 Ssw Maywood, NE	GROUND IS COVERED WHITE WITH HAIL.
May 19, 2:36 PM CDT	HAIL 1	9 E Wellfleet, NE	MOSTLY PEA TO NICKEL SIZE HAIL BUT A FEW STONES WERE AS LARGE AS A QUARTER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.0 hours before the alert went out and 58 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: 177 J/kg
Mixed-layer CIN: -495 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 423 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

809 
WUUS53 KLBF 191858
SVRLBF
NEC063-085-111-191945-
/O.NEW.KLBF.SV.W.0091.120519T1858Z-120519T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
158 PM CDT SAT MAY 19 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN FRONTIER COUNTY IN SOUTHWEST NEBRASKA...
  NORTHERN HAYES COUNTY IN SOUTHWEST NEBRASKA...
  SOUTHERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 245 PM CDT

* AT 153 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL
  SIZE HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  13 MILES NORTHWEST OF HAYES CENTER TO HAYES CENTER TO 6 MILES
  NORTHWEST OF RED WILLOW RESERVOIR STATE RECREATION AREA...AND
  MOVING NORTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MAYWOOD AROUND 220 PM CDT.
  CURTIS AROUND 225 PM CDT.
  WELLFLEET AROUND 230 PM CDT.
  HANSEN MEMORIAL RESERVE STATE WILDLIFE MANAGEMENT AREA AND
  MOOREFIELD AROUND 235 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
HIGHWAY 25 MILE MARKER 50...HIGHWAY 83 MILE MARKER 40 AND HIGHWAY 83
MILE MARKER 60.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4062 10127 4093 10084 4070 10024 4038 10068
TIME...MOT...LOC 1858Z 232DEG 32KT 4064 10118 4057 10096
          4046 10070
WIND...HAIL <50MPH 1.50IN

$$

CDC

3 follow-up statements

675 
WWUS53 KLBF 191914
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
214 PM CDT SAT MAY 19 2012

NEC063-085-111-191945-
/O.CON.KLBF.SV.W.0091.000000T0000Z-120519T1945Z/
FRONTIER NE-HAYES NE-LINCOLN NE-
214 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
LINCOLN...NORTHEASTERN HAYES AND NORTHWESTERN FRONTIER COUNTIES UNTIL
245 PM CDT...

AT 212 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE
HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES
SOUTH OF DICKENS TO 6 MILES NORTHEAST OF HAYES CENTER STATE WILDLIFE
MANAGEMENT AREA TO 7 MILES SOUTHWEST OF CURTIS...MOVING NORTHEAST AT
35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MAYWOOD AROUND 220 PM CDT.
  CURTIS AROUND 225 PM CDT.
  WELLFLEET AROUND 230 PM CDT.
  HANSEN MEMORIAL RESERVE STATE WILDLIFE MANAGEMENT AREA AND
  MOOREFIELD AROUND 235 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HIGHWAY 83
MILE MARKER 60.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4049 10053 4071 10114 4093 10084 4070 10024
TIME...MOT...LOC 1914Z 232DEG 32KT 4073 10103 4066 10081
          4055 10055
WIND...HAIL <50MPH 1.75IN

$$

CDC

579 
WWUS53 KLBF 191930
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
230 PM CDT SAT MAY 19 2012

NEC085-191940-
/O.CAN.KLBF.SV.W.0091.000000T0000Z-120519T1945Z/
HAYES NE-
230 PM CDT SAT MAY 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HAYES COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4059 10042 4081 10099 4093 10084 4070 10024
TIME...MOT...LOC 1930Z 232DEG 32KT 4082 10088 4075 10066
          4064 10040

$$

NEC063-111-191945-
/O.CON.KLBF.SV.W.0091.000000T0000Z-120519T1945Z/
FRONTIER NE-LINCOLN NE-
230 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
LINCOLN AND NORTH CENTRAL FRONTIER COUNTIES UNTIL 245 PM CDT...

AT 226 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE
HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM DICKENS
TO WELLFLEET TO CURTIS...MOVING NORTHEAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  HANSEN MEMORIAL RESERVE STATE WILDLIFE MANAGEMENT AREA AND
  MOOREFIELD AROUND 235 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HIGHWAY 83
MILE MARKER 60.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4059 10042 4081 10099 4093 10084 4070 10024
TIME...MOT...LOC 1930Z 232DEG 32KT 4082 10088 4075 10066
          4064 10040
WIND...HAIL <50MPH 1.50IN

$$

CDC

139 
WWUS53 KLBF 191941
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
241 PM CDT SAT MAY 19 2012

NEC063-111-191950-
/O.EXP.KLBF.SV.W.0091.000000T0000Z-120519T1945Z/
FRONTIER NE-LINCOLN NE-
241 PM CDT SAT MAY 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LINCOLN AND NORTH
CENTRAL FRONTIER COUNTIES WILL EXPIRE AT 245 PM CDT/145 PM MDT/...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR OTHER PARTS OF 
SOUTHEASTERN LINCOLN COUNTY UNTIL 330 PM CDT.

LAT...LON 4059 10042 4081 10099 4093 10084 4070 10024
TIME...MOT...LOC 1940Z 232DEG 32KT 4087 10079 4080 10057
          4069 10031

$$

CDC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:25 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Grant	50 min
May 19, 8:52 AM CDT	Severe Thunderstorm Warning	LBF	McPherson	38 min
May 19, 9:32 AM CDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	43 min
May 19, 1:16 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Frontier, Hayes	44 min
May 19, 1:42 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	31 min
May 19, 2:39 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	51 min
May 19, 3:54 PM CDT	Severe Thunderstorm Warning	LBF	Custer	51 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2012 Every severe thunderstorm warning in 2012

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.