Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 92, NWS North Platte, NE

May 19, 2012Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 19, 2012, 2:39 PM CDT for Lincoln County, Nebraska. It was in force for 51 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 19, 2012, 2:39 PM CDT (19:39 UTC)
Expired: May 19, 2012, 3:30 PM CDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 126 km from the middle of the area, began a volume at 19:40 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, 2:58 PM CDT	HAIL 0.5	8 S Brady, NE	HAIL ACCUMULATION OF 1 INCH.

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, 7.7 hours before the alert went out and 36 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.

736 
WUUS53 KLBF 191939
SVRLBF
NEC111-192030-
/O.NEW.KLBF.SV.W.0092.120519T1939Z-120519T2030Z/

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 330 PM CDT

* AT 235 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  WELLFLEET TO HANSEN MEMORIAL RESERVE STATE WILDLIFE MANAGEMENT AREA
  TO MOOREFIELD...AND MOVING NORTHEAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  COTTONWOOD CANYON STATE WILDLIFE MANAGEMENT AREA AND JEFFREY CANYON
  STATE WILDLIFE MANAGEMENT AREA AROUND 300 PM CDT.
  BRADY AROUND 310 PM CDT.

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 4070 10041 4084 10085 4120 10025 4071 10023
TIME...MOT...LOC 1939Z 230DEG 34KT 4084 10070 4080 10051
          4073 10037
WIND...HAIL <50MPH 1.00IN

$$

CDC

3 follow-up statements

146 
WWUS53 KLBF 191954
SVSLBF

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

NEC111-192030-
/O.CON.KLBF.SV.W.0092.000000T0000Z-120519T2030Z/
LINCOLN NE-
254 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
LINCOLN COUNTY UNTIL 330 PM CDT...

AT 249 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 10 MILES SOUTH
OF LAKE MALONEY STATE RECREATION AREA TO 6 MILES SOUTHWEST OF JEFFREY
CANYON STATE WILDLIFE MANAGEMENT AREA TO 9 MILES NORTHEAST OF
MOOREFIELD...MOVING NORTHEAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  JEFFREY CANYON STATE WILDLIFE MANAGEMENT AREA AROUND 300 PM CDT.
  COTTONWOOD CANYON STATE WILDLIFE MANAGEMENT AREA AROUND 305 PM CDT.
  BRADY AROUND 310 PM CDT.

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 4089 10076 4120 10025 4077 10023
TIME...MOT...LOC 1954Z 230DEG 34KT 4093 10068 4092 10043
          4084 10028
WIND...HAIL <50MPH 1.00IN

$$

CDC

942 
WWUS53 KLBF 192008
SVSLBF

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

NEC111-192030-
/O.CON.KLBF.SV.W.0092.000000T0000Z-120519T2030Z/
LINCOLN NE-
308 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
LINCOLN COUNTY UNTIL 330 PM CDT...

AT 303 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM COTTONWOOD
CANYON STATE WILDLIFE MANAGEMENT AREA TO JEFFREY CANYON STATE
WILDLIFE MANAGEMENT AREA TO GOTHENBURG...MOVING NORTHEAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL AFFECT INTERSTATE 80 EAST OF MAXWELL 
THROUGH BRADY AND RURAL AREAS OF EAST CENTRAL LINCOLN COUNTY.

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 4098 10061 4120 10025 4089 10024
TIME...MOT...LOC 2007Z 230DEG 34KT 4101 10055 4100 10030
          4095 10021
WIND...HAIL <50MPH 1.00IN

$$

CDC

504 
WWUS53 KLBF 192021
SVSLBF

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

NEC111-192031-
/O.EXP.KLBF.SV.W.0092.000000T0000Z-120519T2030Z/
LINCOLN NE-
321 PM CDT SAT MAY 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LINCOLN COUNTY
WILL EXPIRE AT 330 PM CDT/230 PM MDT/...

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

LAT...LON 4098 10061 4120 10025 4089 10024
TIME...MOT...LOC 2021Z 230DEG 34KT 4109 10041 4108 10016
          4103 10007

$$

POWER

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, 1:58 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	47 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.