Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 192, NWS North Platte, NE

August 11, 20124 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 11, 2012, 6:46 PM MDT for 4 counties in Nebraska. It was in force for 44 min. 3 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: Aug 11, 2012, 6:46 PM MDT (00:46 UTC)
Expired: Aug 11, 2012, 7:30 PM MDT
In force: 44 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Deuel County, NE, Garden County, NE, Keith County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 163 km from the middle of the area, began a volume at 00:50 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
Aug 11, 6:55 PM MDT	HAIL 1	9 N Big Springs, NE	DIME TO QUARTER SIZED HAIL OCCURRED AT TIME OF REPORT ALONG WITH STRONG GUSTY WINDS. SPEED UNABLE TO BE DETERMINED.
Aug 11, 7:03 PM MDT	HAIL 1	5 N Big Springs, NE	QUARTER SIZED HAIL REPORTED BY FIRE CHIEF 5 MILES NORTH OF BIG SPRINGS ALONG WITH ESTIMATED 50 MPH WIND GUSTS.
Aug 11, 7:08 PM MDT	TSTM WND DMG	6 W Brule, NE	LARGE TREES BLOWN DOWN. WINDOWS BROKEN OUT IN QUONSET HUT AND VEHICLE. CORRAL KNOCKED DOWN BY THUNDERSTORM WIND GUSTS. INITIAL REPORT WAS RELAYED BY KEITH COUNTY COMMUNICATIONS.

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 00:00Z, 0.8 hours before the alert went out and 129 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: 17 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 2587 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 184 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.

317 
WUUS53 KLBF 120046
SVRLBF
NEC049-069-101-135-120130-
/O.NEW.KLBF.SV.W.0192.120812T0046Z-120812T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
646 PM MDT SAT AUG 11 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN DEUEL COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTH CENTRAL GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTHWESTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...
  NORTHWESTERN PERKINS COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 730 PM MDT

* AT 641 PM MDT...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 5
  MILES SOUTHEAST OF INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD...OR
  13 MILES NORTHEAST OF CHAPPELL...AND MOVING SOUTHEAST AT 35 MPH.

  AT 744 PM CDT 70 MPH WIND GUSTS WITH QUARTER SIZE HAIL WERE        
  REPORTED 12 MILES SOUTH SOUTHEAST OF OSHKOSH WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  BIG SPRINGS...GOLDENEYE STATE WILDLIFE MANAGEMENT AREA...BRULE...
  HIGHWAY 30 MILE MARKER 100...INTERSTATE 80 MILE MARKER 100...
  INTERSTATE 80 MILE MARKER 110...INTERSTATE 80 MILE MARKER 120 AND
  HIGHWAY 61 MILE MARKER 80.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

&&

LAT...LON 4133 10227 4097 10162 4077 10205 4099 10206
      4100 10231 4120 10242
TIME...MOT...LOC 0045Z 309DEG 32KT 4120 10224
WIND...HAIL 70MPH 1.00IN

$$

JACOBS

4 follow-up statements

952 
WWUS53 KLBF 120059
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
759 PM CDT SAT AUG 11 2012

NEC069-120108-
/O.CAN.KLBF.SV.W.0192.000000T0000Z-120812T0130Z/
GARDEN NE-
659 PM MDT SAT AUG 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GARDEN COUNTY IS
CANCELLED...

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

LAT...LON 4122 10221 4122 10209 4097 10162 4077 10205
      4099 10206 4107 10222 4116 10227
TIME...MOT...LOC 0058Z 309DEG 32KT 4113 10212

$$

NEC049-101-135-120130-
/O.CON.KLBF.SV.W.0192.000000T0000Z-120812T0130Z/
DEUEL NE-KEITH NE-PERKINS NE-
659 PM MDT SAT AUG 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
PERKINS...SOUTHWESTERN KEITH AND EASTERN DEUEL COUNTIES UNTIL 730 PM
MDT...

AT 654 PM MDT...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 7
MILES NORTHWEST OF BIG SPRINGS...MOVING SOUTHEAST AT 35 MPH.

IN ADDITION...AT 644 PM MDT QUARTER SIZE HAIL AND WIND GUSTS IN 
EXCESS OF 70 MPH WERE REPORTED 12 MILES SOUTHEAST OF OSHKOSH WITH 
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  BIG SPRINGS...GOLDENEYE STATE WILDLIFE MANAGEMENT AREA...BRULE...
  INTERSTATE 80 MILE MARKER 110 AND HIGHWAY 61 MILE MARKER 80.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

&&

LAT...LON 4122 10221 4122 10209 4097 10162 4077 10205
      4099 10206 4107 10222 4116 10227
TIME...MOT...LOC 0058Z 309DEG 32KT 4113 10212
WIND...HAIL 70MPH 1.00IN

$$

JACOBS

229 
WWUS53 KLBF 120107
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
807 PM CDT SAT AUG 11 2012

NEC049-101-135-120130-
/O.CON.KLBF.SV.W.0192.000000T0000Z-120812T0130Z/
DEUEL NE-KEITH NE-PERKINS NE-
707 PM MDT SAT AUG 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
PERKINS...SOUTHWESTERN KEITH AND SOUTHEASTERN DEUEL COUNTIES UNTIL
730 PM MDT...

AT 704 PM MDT...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 NEAR
BIG SPRINGS...MOVING SOUTHEAST AT 35 MPH.

IN ADDITION...AT 703 PM MDT QUARTER SIZE HAIL WAS REPORTED FOUR 
MILES NORTH OF BIG SPRINGS WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  BRULE...INTERSTATE 80 MILE MARKER 110 AND HIGHWAY 61 MILE MARKER
  80.

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 DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

&&

LAT...LON 4101 10207 4109 10215 4114 10212 4119 10203
      4097 10162 4077 10205 4099 10206
TIME...MOT...LOC 0107Z 309DEG 32KT 4108 10204
WIND...HAIL 70MPH 1.00IN

$$

JACOBS

663 
WWUS53 KLBF 120120
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
820 PM CDT SAT AUG 11 2012

NEC049-120130-
/O.CAN.KLBF.SV.W.0192.000000T0000Z-120812T0130Z/
DEUEL NE-
720 PM MDT SAT AUG 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DEUEL COUNTY IS
CANCELLED...

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

LAT...LON 4099 10201 4100 10205 4104 10205 4110 10200
      4113 10191 4097 10162 4078 10204 4078 10205
TIME...MOT...LOC 0120Z 309DEG 32KT 4101 10192

$$

NEC101-135-120130-
/O.CON.KLBF.SV.W.0192.000000T0000Z-120812T0130Z/
KEITH NE-PERKINS NE-
720 PM MDT SAT AUG 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
PERKINS AND SOUTHWESTERN KEITH COUNTIES UNTIL 730 PM MDT...

AT 717 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
SOUTHWEST OF BRULE...OR 7 MILES SOUTHEAST OF BIG SPRINGS...MOVING
SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  HIGHWAY 61 MILE MARKER 80.

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 DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4099 10201 4100 10205 4104 10205 4110 10200
      4113 10191 4097 10162 4078 10204 4078 10205
TIME...MOT...LOC 0120Z 309DEG 32KT 4101 10192
WIND...HAIL 60MPH 1.00IN

$$

JACOBS

965 
WWUS53 KLBF 120127
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
827 PM CDT SAT AUG 11 2012

NEC101-135-120137-
/O.EXP.KLBF.SV.W.0192.000000T0000Z-120812T0130Z/
KEITH NE-PERKINS NE-
727 PM MDT SAT AUG 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PERKINS AND
SOUTHWESTERN KEITH COUNTIES WILL EXPIRE AT 830 PM CDT/730 PM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE
WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

LAT...LON 4099 10201 4100 10205 4104 10205 4110 10200
      4113 10191 4097 10162 4078 10204 4078 10205
TIME...MOT...LOC 0127Z 309DEG 32KT 4097 10186

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 6:17 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	43 min
Aug 11, 7:53 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	37 min
Aug 11, 8:29 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	46 min
Aug 11, 9:06 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	39 min
Aug 11, 9:45 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	45 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.