Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 11, NWS North Platte, NE

April 12, 2012Keith County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 12, 2012, 3:43 PM MDT for Keith County, Nebraska. It was in force for 47 min. 6 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 12, 2012, 3:43 PM MDT (21:43 UTC)
Expired: Apr 12, 2012, 4:30 PM MDT
In force: 47 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Keith County, NE

The radar

The North Platte radar (KLNX), 151 km from the middle of the area, began a volume at 21:46 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 12, 3:46 PM MDT	HAIL 0.88	5 Sw Brule, NE
Apr 12, 3:48 PM MDT	HAIL 0.88	7 Sw Brule, NE
Apr 12, 3:55 PM MDT	HAIL 0.75	6 Nnw Brule, NE
Apr 12, 3:59 PM MDT	HAIL 0.25	Brule, NE
Apr 12, 4:08 PM MDT	HAIL 1.75	4 Sw Lemoyne, NE	REPORT FROM LAKE MCCONAUGHY
Apr 12, 4:10 PM MDT	HAIL 1	7 N Brule, NE

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, 9.7 hours before the alert went out and 116 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: 665 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 130 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.

919 
WUUS53 KLBF 122143
SVRLBF
NEC101-122230-
/O.NEW.KLBF.SV.W.0011.120412T2143Z-120412T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
343 PM MDT THU APR 12 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 430 PM MDT

* AT 341 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR BIG SPRINGS...AND MOVING NORTHEAST AT 20
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRULE AROUND 350 PM MDT.
  EAGLE GULCH CAMPGROUND AND LAKE VIEW CAMPGROUND AROUND 415 PM MDT.
  OTTER CREEK CAMPGROUND AROUND 425 PM MDT.
  LEMOYNE AROUND 430 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HIGHWAY
26 MILE MARKER 130 AND HIGHWAY 26 MILE MARKER 140.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4108 10205 4131 10205 4130 10174 4101 10185
      4100 10203 4101 10205 4105 10206
TIME...MOT...LOC 2143Z 205DEG 19KT 4109 10201
WIND...HAIL <50MPH 1.00IN

$$

MASEK

4 follow-up statements

084 
WWUS53 KLBF 122148
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
348 PM MDT THU APR 12 2012

NEC101-122230-
/O.CON.KLBF.SV.W.0011.000000T0000Z-120412T2230Z/
KEITH NE-
348 PM MDT THU APR 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN KEITH
COUNTY UNTIL 430 PM MDT...

AT 346 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED NEAR BRULE...OR 6 MILES NORTHEAST OF BIG SPRINGS...
MOVING NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  EAGLE GULCH CAMPGROUND AROUND 405 PM MDT.
  LAKE VIEW CAMPGROUND AROUND 410 PM MDT.
  OTTER CREEK CAMPGROUND AROUND 415 PM MDT.
  LEMOYNE AROUND 420 PM MDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE HIGHWAY
26 MILE MARKER 130 AND HIGHWAY 26 MILE MARKER 140.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4131 10205 4130 10174 4101 10185 4100 10203
      4101 10203 4108 10205
TIME...MOT...LOC 2147Z 215DEG 23KT 4112 10197
WIND...HAIL <50MPH 1.75IN

$$

MASEK

696 
WWUS53 KLBF 122202
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
402 PM MDT THU APR 12 2012

NEC101-122230-
/O.CON.KLBF.SV.W.0011.000000T0000Z-120412T2230Z/
KEITH NE-
402 PM MDT THU APR 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN KEITH
COUNTY UNTIL 430 PM MDT...

AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR LAKE VIEW CAMPGROUND...OR 10 MILES NORTHWEST
OF OGALLALA...MOVING NORTHEAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  OTTER CREEK CAMPGROUND AROUND 410 PM MDT.
  LEMOYNE AROUND 415 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4116 10198 4131 10202 4130 10174 4109 10182
TIME...MOT...LOC 2202Z 216DEG 26KT 4121 10187
WIND...HAIL <50MPH 1.00IN

$$

MASEK

615 
WWUS53 KLBF 122210
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
410 PM MDT THU APR 12 2012

NEC101-122230-
/O.CON.KLBF.SV.W.0011.000000T0000Z-120412T2230Z/
KEITH NE-
410 PM MDT THU APR 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN KEITH
COUNTY UNTIL 430 PM MDT...

AT 409 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING GOLF BALL SIZE HAIL.  THIS STORM WAS LOCATED
NEAR LEMOYNE...OR 11 MILES NORTHWEST OF OGALLALA...MOVING NORTHEAST
AT 35 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF WESTERN
KEITH COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4116 10198 4131 10202 4130 10174 4109 10182
TIME...MOT...LOC 2210Z 222DEG 32KT 4128 10180
WIND...HAIL <50MPH 1.75IN

$$

MASEK

356 
WWUS53 KLBF 122222
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
422 PM MDT THU APR 12 2012

NEC101-122231-
/O.EXP.KLBF.SV.W.0011.000000T0000Z-120412T2230Z/
KEITH NE-
422 PM MDT THU APR 12 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN KEITH COUNTY WILL
EXPIRE AT 430 PM MDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH 
CENTRAL KEITH COUNTY UNTIL 445 MDT.

LAT...LON 4116 10198 4131 10202 4130 10174 4109 10182
TIME...MOT...LOC 2221Z 222DEG 32KT 4135 10171

$$

MASEK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 3:36 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	39 min
Apr 12, 3:39 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	38 min
Apr 12, 4:12 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	33 min
Apr 12, 4:44 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, McPherson	31 min
Apr 12, 5:13 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	47 min
Apr 12, 5:14 PM MDT	Severe Thunderstorm Warning	LBF	McPherson	46 min
Apr 12, 5:55 PM MDT	Tornado Warning	LBF	Perkins	35 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.