Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 37, NWS North Platte, NE

April 14, 2012Custer County, Lincoln County, Logan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 14, 2012, 7:35 PM CDT for Custer County, Lincoln County, Logan County, Nebraska. It was in force for 40 min. 2 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: Apr 14, 2012, 7:35 PM CDT (00:35 UTC)
Expired: Apr 14, 2012, 8:15 PM CDT
In force: 40 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Custer County, NE, Lincoln County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 86 km from the middle of the area, began a volume at 00:36 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
Apr 14, 7:54 PM CDT	HAIL 0.75	7 S Arnold, NE
Apr 14, 8:15 PM CDT	HAIL 1.5	8 Sw Callaway, NE

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
Apr 14, 2:33 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.6 hours before the alert went out and 309 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 871 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 483 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

006 
WUUS53 KLBF 150035
SVRLBF
NEC041-111-113-150115-
/O.NEW.KLBF.SV.W.0037.120415T0035Z-120415T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
735 PM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CUSTER COUNTY IN CENTRAL NEBRASKA...
  EXTREME NORTHEASTERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...
  SOUTHEASTERN LOGAN COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 815 PM CDT

* AT 731 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTH OF ARNOLD TO 10
  MILES SOUTH OF ARNOLD TO JEFFREY CANYON STATE WILDLIFE MANAGEMENT
  AREA...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ANSELMO...CALLAWAY...VICTORIA SPRINGS STATE RECREATION AREA...
  MERNA...OCONTO...HIGHWAY 47 MILE MARKER 80...HIGHWAY 92 MILE MARKER
  260 AND HIGHWAY 40 MILE MARKER 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4102 10027 4122 10027 4159 10030 4163 10011
      4165 9973 4137 9971 4104 9973 4104 10021
TIME...MOT...LOC 0035Z 247DEG 36KT 4153 10014 4129 10016
          4097 10030
WIND...HAIL 60MPH 1.00IN

$$

BROOKS

1 follow-up statement

731 
WWUS53 KLBF 150105
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
805 PM CDT SAT APR 14 2012

NEC111-113-150115-
/O.CAN.KLBF.SV.W.0037.000000T0000Z-120415T0115Z/
LINCOLN NE-LOGAN NE-
805 PM CDT SAT APR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOGAN AND EXTREME
NORTHEASTERN LINCOLN COUNTIES IS CANCELLED...

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

LAT...LON 4125 10023 4160 10014 4163 10011 4165 9973
      4137 9971 4104 9973 4104 10021
TIME...MOT...LOC 0105Z 247DEG 36KT 4156 9982 4141 9998
          4109 10013

$$

NEC041-150115-
/O.CON.KLBF.SV.W.0037.000000T0000Z-120415T0115Z/
CUSTER NE-
805 PM CDT SAT APR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN CUSTER
COUNTY UNTIL 815 PM CDT...

AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM ANSELMO TO 9 MILES NORTHWEST OF
CALLAWAY TO 11 MILES NORTH OF GOTHENBURG...MOVING NORTHEAST AT 40
MPH.

LOCATIONS IMPACTED INCLUDE...
  VICTORIA SPRINGS STATE RECREATION AREA...CALLAWAY...MERNA AND
  OCONTO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4125 10023 4160 10014 4163 10011 4165 9973
      4137 9971 4104 9973 4104 10021
TIME...MOT...LOC 0105Z 247DEG 36KT 4156 9982 4141 9998
          4109 10013
WIND...HAIL 60MPH 1.00IN

$$

BROOKS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:01 PM CDT	Tornado Warning	LBF	Blaine, Loup	16 min
Apr 14, 7:05 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer	40 min
Apr 14, 7:18 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	42 min
Apr 14, 7:41 PM CDT	Tornado Warning	LBF	Blaine, Custer, Loup	34 min
Apr 14, 8:07 PM CDT	Tornado Warning	LBF	Garfield, Holt, Loup, Rock	25 min
Apr 14, 8:13 PM CDT	Severe Thunderstorm Warning	LBF	Custer	47 min
Apr 14, 8:15 PM CDT	Severe Thunderstorm Warning	LBF	Custer	33 min
Apr 14, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Loup, Rock, Wheeler	46 min
Apr 14, 8:39 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	51 min
Apr 14, 8:47 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, McPherson	43 min
Apr 14, 9:32 PM CDT	Severe Thunderstorm Warning	LBF	Custer	43 min
Apr 14, 11:18 PM CDT	River Flood Warning	LBF	Lincoln	21 hr
Apr 15, 3:59 PM CDT	High Wind Warning	LBF	Blaine, Boyd, Brown, Cherry, Custer, Garfield and 6 more	6 hr

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.