Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 253, NWS North Platte, NE

August 7, 20114 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 7, 2011, 8:10 PM CDT for 4 counties in Nebraska. It was in force for 50 min. 8 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 7, 2011, 8:10 PM CDT (01:10 UTC)
Expired: Aug 7, 2011, 9:00 PM CDT
In force: 50 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

Counties Brown County, NE, Cherry County, NE, Keya Paha County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 95 km from the middle of the area, began a volume at 01:11 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 7, 8:14 PM CDT	TSTM WND GST 62	27 S Valentine, NE	NWS RAWS SITE NEAR HIGHWAY 83
Aug 7, 8:15 PM CDT	TSTM WND DMG	13 Se Valentine, NE	LOTS OF TREES DOWN AS WELL AS BUILDING DAMAGE
Aug 7, 8:15 PM CDT	TSTM WND GST 80	10 Se Valentine, NE	THE VERY STRONG WINDS LASTED ABOUT 20 MIN
Aug 7, 8:15 PM CDT	HAIL 1.5	10 Se Valentine, NE
Aug 7, 8:25 PM CDT	TSTM WND GST 62	4 Ene Johnstown, NE
Aug 7, 8:38 PM CDT	TSTM WND GST 67	4 Ene Johnstown, NE
Aug 7, 8:42 PM CDT	TSTM WND GST 71	4 Ene Johnstown, NE
Aug 7, 8:50 PM CDT	TSTM WND DMG	3 S Bassett, NE	POWERLINES DOWN...POWER WAS OUT IN TOWN UNTIL 2 AM MONDAY MORNING

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
Aug 7, 2:58 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 7, 7:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.2 hours before the alert went out and 180 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: 2434 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 359 m²/s²
0-3 km storm-relative helicity: 467 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.

654 
WUUS53 KLBF 080110
SVRLBF
NEC017-031-103-149-080200-
/O.NEW.KLBF.SV.W.0253.110808T0110Z-110808T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
810 PM CDT SUN AUG 7 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BROWN COUNTY IN NORTH CENTRAL NEBRASKA...
  EASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...
  KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA...
  WESTERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 900 PM CDT/800 PM MDT/

* AT 806 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL
  SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHWEST
  OF SPARKS TO 11 MILES WEST OF JOHNSTOWN TO BROWNLEE...AND MOVING
  EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  AINSWORTH...SPRINGVIEW...BASSETT...SPARKS...JOHNSTOWN...NORTH RIVER
  TRAIL...MOON LAKE...LONG LAKE STATE WILDLIFE MANAGEMENT AREA...
  BOBCAT STATE WILDLIFE MANAGEMENT AREA...WILLOW LAKE STATE WILDLIFE
  MANAGEMENT AREA...KELLER PARK STATE RECREATION AREA...LONG PINE...
  THOMAS CREEK STATE WILDLIFE MANAGEMENT AREA...BURTON...HIGHWAY 12
  MILE MARKER 30...HIGHWAY 7 MILE MARKER 40...HIGHWAY 12 MILE MARKER
  40...HIGHWAY 7 MILE MARKER 30...HIGHWAY 183 MILE MARKER 220 AND
  HIGHWAY 183 MILE MARKER 170.

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.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS OVER 60 
MPH AND LARGE HAIL UP TO THE SIZE OF BASEBALLS. SEEK SHELTER NOW INSIDE A 
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4297 9941 4242 9937 4211 9971 4230 10093
      4268 10060 4301 10067 4301 9972
TIME...MOT...LOC 0110Z 284DEG 51KT 4295 10030 4260 10019
          4228 10054
WIND...HAIL 70MPH 1.50IN

$$

BUTTLER

3 follow-up statements

183 
WWUS53 KLBF 080117
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
817 PM CDT SUN AUG 7 2011

NEC017-031-103-149-080200-
/O.CON.KLBF.SV.W.0253.000000T0000Z-110808T0200Z/
BROWN NE-KEYA PAHA NE-ROCK NE-CHERRY NE-
817 PM CDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
CHERRY...WESTERN ROCK...KEYA PAHA AND BROWN COUNTIES UNTIL 900 PM
CDT/800 PM MDT/...

AT 815 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM SPARKS TO JOHNSTOWN TO HIGHWAY 83
CROSSING THE NORTH LOUP RIVER...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  AINSWORTH...SPRINGVIEW...BASSETT...NORTH RIVER TRAIL...MOON LAKE...
  LONG LAKE STATE WILDLIFE MANAGEMENT AREA...BOBCAT STATE WILDLIFE
  MANAGEMENT AREA...WILLOW LAKE STATE WILDLIFE MANAGEMENT AREA...
  KELLER PARK STATE RECREATION AREA...LONG PINE...THOMAS CREEK STATE
  WILDLIFE MANAGEMENT AREA...BURTON...HIGHWAY 12 MILE MARKER 30...
  HIGHWAY 7 MILE MARKER 40...HIGHWAY 12 MILE MARKER 40...HIGHWAY 7
  MILE MARKER 30...HIGHWAY 183 MILE MARKER 220 AND HIGHWAY 183 MILE
  MARKER 170.

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 LINE OF STORMS PRODUCED A 77 MPH WIND GUST AT THE VALENTINE 
AIRPORT AT 802 PM CDT. THIS IS A DANGEROUS SITUATION...TAKE COVER
IMMEDIATELY!

&&

LAT...LON 4297 9941 4242 9937 4211 9971 4230 10093
      4268 10060 4301 10067 4301 9972
TIME...MOT...LOC 0117Z 284DEG 51KT 4292 10017 4257 10006
          4225 10042
WIND...HAIL 70MPH 1.50IN

$$

BUTTLER

292 
WWUS53 KLBF 080127
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
827 PM CDT SUN AUG 7 2011

NEC017-031-103-149-080200-
/O.CON.KLBF.SV.W.0253.000000T0000Z-110808T0200Z/
BROWN NE-KEYA PAHA NE-ROCK NE-CHERRY NE-
827 PM CDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
CHERRY...WESTERN ROCK...KEYA PAHA AND BROWN COUNTIES UNTIL 900 PM
CDT/800 PM MDT/...

AT 820 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 8 MILES EAST OF SPARKS TO
JOHNSTOWN TO 9 MILES EAST OF HIGHWAY 83 CROSSING THE NORTH LOUP
RIVER...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  AINSWORTH...SPRINGVIEW...BASSETT...LONG LAKE STATE WILDLIFE
  MANAGEMENT AREA...BOBCAT STATE WILDLIFE MANAGEMENT AREA...WILLOW
  LAKE STATE WILDLIFE MANAGEMENT AREA...KELLER PARK STATE RECREATION
  AREA...LONG PINE...THOMAS CREEK STATE WILDLIFE MANAGEMENT AREA...
  BURTON...HIGHWAY 7 MILE MARKER 40...HIGHWAY 12 MILE MARKER 40...
  HIGHWAY 7 MILE MARKER 30...HIGHWAY 183 MILE MARKER 220 AND HIGHWAY
  183 MILE MARKER 170.

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.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS. AT 827 PM CDT...A 62 MPH WIND GUST WAS REPORTED 
AT THE AINSWORTH AIRPORT.

&&

LAT...LON 4297 9941 4242 9937 4211 9971 4230 10093
      4268 10060 4301 10067 4301 9972
TIME...MOT...LOC 0125Z 284DEG 51KT 4289 10002 4254 9991
          4222 10028
WIND...HAIL 70MPH 1.00IN

$$

BUTTLER

442 
WWUS53 KLBF 080142
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
842 PM CDT SUN AUG 7 2011

NEC017-031-103-149-080200-
/O.CON.KLBF.SV.W.0253.000000T0000Z-110808T0200Z/
BROWN NE-KEYA PAHA NE-ROCK NE-CHERRY NE-
842 PM CDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
CHERRY...WESTERN ROCK...KEYA PAHA AND BROWN COUNTIES UNTIL 900 PM
CDT/800 PM MDT/...

AT 838 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM SPRINGVIEW TO LONG PINE TO WILLOW
LAKE STATE WILDLIFE MANAGEMENT AREA...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  BASSETT...BURTON AND HIGHWAY 183 MILE MARKER 170.

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.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS. AT 838 PM CDT...A 67 MPH WIND GUST WAS REPORTED 
AT THE AINSWORTH AIRPORT. 

&&

LAT...LON 4297 9941 4242 9937 4211 9971 4230 10093
      4268 10060 4301 10067 4301 9972
TIME...MOT...LOC 0142Z 282DEG 50KT 4285 9970 4250 9960
          4218 9997
WIND...HAIL 70MPH 1.00IN

$$

BUTTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 7:39 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	66 min
Aug 7, 8:49 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Brown, Holt, Keya Paha, Rock	56 min
Aug 7, 9:34 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Garfield, Holt, Keya Paha, Rock, Wheeler	56 min
Aug 8, 4:35 PM CDT	Severe Thunderstorm Warning	LBF	Chase	40 min
Aug 8, 5:21 PM CDT	Severe Thunderstorm Warning	LBF	Keith	39 min
Aug 8, 5:53 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	52 min
Aug 8, 6:08 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln	52 min
Aug 8, 6:31 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Lincoln, Perkins	74 min
Aug 8, 6:46 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	44 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2011 Every severe thunderstorm warning in 2011

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.