Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS North Platte, NE

April 12, 2012Arthur County, Keith County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 12, 2012, 4:44 PM MDT for Arthur County, Keith County, McPherson County, Nebraska. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 12, 2012, 4:44 PM MDT (22:44 UTC)
Expired: Apr 12, 2012, 5:15 PM MDT
In force: 31 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Arthur County, NE, Keith County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 93 km from the middle of the area, began a volume at 22:46 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.7 hours before the alert went out and 82 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.

492 
WUUS53 KLBF 122244
SVRLBF
NEC005-101-117-122315-
/O.NEW.KLBF.SV.W.0013.120412T2244Z-120412T2315Z/

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...
  NORTHEASTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...
  SOUTHWESTERN MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 515 PM MDT/615 PM CDT/

* AT 441 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED 10 MILES NORTH OF KEYSTONE...OR 16 MILES
  SOUTHEAST OF ARTHUR...AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BUCKTAIL LAKE...DIAMOND BAR LAKE AND HIGHWAY 92 MILE MARKER 180.

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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4161 10146 4150 10119 4127 10135 4125 10154
      4141 10167 4155 10169
TIME...MOT...LOC 2244Z 225DEG 25KT 4138 10155
WIND...HAIL <50MPH 1.50IN

$$

MASEK

3 follow-up statements

188 
WWUS53 KLBF 122253
SVSLBF

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

NEC005-101-117-122315-
/O.CON.KLBF.SV.W.0013.000000T0000Z-120412T2315Z/
KEITH NE-MCPHERSON NE-ARTHUR NE-
453 PM MDT THU APR 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ARTHUR...SOUTHWESTERN MCPHERSON AND NORTHEASTERN KEITH COUNTIES UNTIL
515 PM MDT/615 PM CDT/...

AT 450 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 6 MILES SOUTHWEST OF BUCKTAIL LAKE...OR 14 MILES
SOUTHEAST OF ARTHUR...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  BUCKTAIL LAKE...DIAMOND BAR LAKE AND HIGHWAY 92 MILE MARKER 180.

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 4157 10164 4161 10146 4150 10119 4127 10135
      4130 10145 4142 10160
TIME...MOT...LOC 2253Z 224DEG 27KT 4144 10148
WIND...HAIL <50MPH 1.00IN

$$

MASEK

665 
WWUS53 KLBF 122304
SVSLBF

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

NEC005-101-117-122315-
/O.CON.KLBF.SV.W.0013.000000T0000Z-120412T2315Z/
KEITH NE-MCPHERSON NE-ARTHUR NE-
504 PM MDT THU APR 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ARTHUR...SOUTHWESTERN MCPHERSON AND NORTHEASTERN KEITH COUNTIES UNTIL
515 PM MDT/615 PM CDT/...

AT 500 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR BUCKTAIL LAKE...OR 16 MILES SOUTHEAST OF
ARTHUR...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  DIAMOND BAR LAKE AND HIGHWAY 92 MILE MARKER 180.

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 10134 4137 10142 4144 10150 4157 10160
      4161 10146 4150 10119
TIME...MOT...LOC 2304Z 223DEG 25KT 4148 10139
WIND...HAIL <50MPH 1.00IN

$$

MASEK

568 
WWUS53 KLBF 122316
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
616 PM CDT THU APR 12 2012

NEC005-101-117-122326-
/O.EXP.KLBF.SV.W.0013.000000T0000Z-120412T2315Z/
KEITH NE-MCPHERSON NE-ARTHUR NE-
516 PM MDT THU APR 12 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ARTHUR...
SOUTHWESTERN MCPHERSON AND NORTHEASTERN KEITH COUNTIES HAS EXPIRED...

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

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
MCPHERSON COUNTY UNTIL 600 PM MDT.

LAT...LON 4131 10134 4137 10142 4144 10150 4157 10160
      4161 10146 4150 10119
TIME...MOT...LOC 2304Z 223DEG 25KT 4148 10139

$$

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, 3:43 PM MDT	Severe Thunderstorm Warning	LBF	Keith	47 min
Apr 12, 4:12 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.