Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 144, NWS North Platte, NE

June 29, 2012Keya Paha County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 29, 2012, 4:49 AM CDT for Keya Paha County, Nebraska. It was in force for 29 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: Jun 29, 2012, 4:49 AM CDT (09:49 UTC)
Expired: Jun 29, 2012, 5:18 AM CDT
In force: 29 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Keya Paha County, NE

The radar

The North Platte radar (KLNX), 123 km from the middle of the area, began a volume at 09:49 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 00:00Z, 9.8 hours before the alert went out and 209 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: 1037 J/kg
Mixed-layer CIN: -216 J/kg
Mixed-layer LCL: 2810 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

979 
WUUS53 KLBF 290949
SVRLBF
NEC103-291030-
/O.NEW.KLBF.SV.W.0144.120629T0949Z-120629T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
449 AM CDT FRI JUN 29 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 530 AM CDT

* AT 445 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 10
  MILES NORTH OF NORTH RIVER TRAIL...OR 17 MILES NORTHWEST OF
  SPRINGVIEW...AND MOVING EAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SPRINGVIEW...THOMAS CREEK STATE WILDLIFE MANAGEMENT AREA...
  BURTON...HIGHWAY 12 MILE MARKER 40 AND HIGHWAY 183 MILE MARKER 220.

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 4295 9956 4273 9968 4286 10018 4301 10012
      4301 9993
TIME...MOT...LOC 0949Z 287DEG 16KT 4292 10002
WIND...HAIL 70MPH 1.00IN

$$

KECK

2 follow-up statements

823 
WWUS53 KLBF 291008
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
508 AM CDT FRI JUN 29 2012

NEC103-291030-
/O.CON.KLBF.SV.W.0144.000000T0000Z-120629T1030Z/
KEYA PAHA NE-
508 AM CDT FRI JUN 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN KEYA
PAHA COUNTY UNTIL 530 AM CDT...

AT 503 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 9
MILES NORTHEAST OF NORTH RIVER TRAIL...OR 11 MILES NORTHWEST OF
SPRINGVIEW...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPRINGVIEW...THOMAS CREEK STATE WILDLIFE MANAGEMENT AREA...
  BURTON...HIGHWAY 12 MILE MARKER 40 AND HIGHWAY 183 MILE MARKER 220.

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 4295 9956 4273 9968 4286 10018 4301 10012
      4301 9993
TIME...MOT...LOC 1008Z 287DEG 16KT 4289 9991
WIND...HAIL 70MPH 1.00IN

$$

KECK
_@_WWA_SVRWX_STA_COUNTY.WWAPROD--!

783 
WWUS53 KLBF 291018
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
518 AM CDT FRI JUN 29 2012

NEC103-291028-
/O.CAN.KLBF.SV.W.0144.000000T0000Z-120629T1030Z/
KEYA PAHA NE-
518 AM CDT FRI JUN 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN KEYA PAHA COUNTY IS
CANCELLED...

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

LAT...LON 4295 9956 4273 9968 4286 10018 4301 10012
      4301 9993
TIME...MOT...LOC 1018Z 287DEG 16KT 4288 9985

$$

KECK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 10:54 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	66 min
Jun 28, 11:42 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan, McPherson	48 min
Jun 29, 2:28 AM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Wheeler	23 min
Jun 29, 7:43 AM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	47 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.