Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 36, NWS North Platte, NE

April 14, 2012Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 14, 2012, 7:18 PM CDT for Lincoln County, Nebraska. It was in force for 42 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, 7:18 PM CDT (00:18 UTC)
Expired: Apr 14, 2012, 8:00 PM CDT
In force: 42 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 103 km from the middle of the area, began a volume at 00:18 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, 7:22 PM CDT	HAIL 1	2 Ne Maxwell, NE	HAIL WAS COVERING THE GROUND.
Apr 14, 7:22 PM CDT	HAIL 1	3 Ene Maxwell, NE	HAIL COVERING THE GROUND

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

Denver, CO (KDNR), launched 00:00Z, 0.3 hours before the alert went out and 274 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: 1435 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

056 
WUUS53 KLBF 150018
SVRLBF
NEC111-150100-
/O.NEW.KLBF.SV.W.0036.120415T0018Z-120415T0100Z/

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL LINCOLN COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 800 PM CDT

* AT 713 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM PRODUCING PING PONG BALL SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR MAXWELL...
  OR 15 MILES SOUTHEAST OF NORTH PLATTE...AND MOVING NORTHEAST AT 35
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  BRADY.

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 4109 10064 4124 10023 4105 10024 4104 10022
      4095 10022 4095 10025 4092 10057
TIME...MOT...LOC 0018Z 234DEG 32KT 4108 10046
WIND...HAIL 60MPH 1.50IN

$$

BROOKS

2 follow-up statements

757 
WWUS53 KLBF 150051
SVSLBF

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

NEC111-150100-
/O.CON.KLBF.SV.W.0036.000000T0000Z-120415T0100Z/
LINCOLN NE-
751 PM CDT SAT APR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
LINCOLN COUNTY UNTIL 800 PM CDT...

AT 750 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES NORTHEAST OF
BRADY...OR 24 MILES SOUTH OF ARNOLD...MOVING NORTHEAST AT 15 MPH.

IN ADDITION...AT 722 QUARTER SIZE HAIL WAS REPORTED 3 MILES EAST OF 
MAXWELL.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME EASTERN LINCOLN COUNTY.

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 4093 10043 4117 10043 4124 10024 4122 10023
      4105 10024 4104 10022 4095 10022
TIME...MOT...LOC 0051Z 243DEG 15KT 4108 10030
WIND...HAIL 60MPH 1.00IN

$$

BROOKS

520 
WWUS53 KLBF 150101
SVSLBF

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

NEC111-150111-
/O.EXP.KLBF.SV.W.0036.000000T0000Z-120415T0100Z/
LINCOLN NE-
801 PM CDT SAT APR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LINCOLN COUNTY
HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 9 PM CDT.

LAT...LON 4093 10043 4117 10043 4124 10024 4122 10023
      4105 10024 4104 10022 4095 10022
TIME...MOT...LOC 0051Z 243DEG 15KT 4108 10030

$$

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, 7:35 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	40 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.