Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 421, NWS North Platte, NE

August 11, 20085 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 11, 2008, 8:03 PM CDT for 5 counties in Nebraska. It was in force for 42 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: Aug 11, 2008, 8:03 PM CDT (01:03 UTC)
Expired: Aug 11, 2008, 8:45 PM CDT
In force: 42 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Blaine County, NE, Brown County, NE, Loup County, NE, Rock County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 51 km from the middle of the area, began a volume at 01:05 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 11, 2:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.1 hours before the alert went out and 114 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: 1867 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1404 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 266 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 11.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 120103
SVRLBF
NEC009-017-115-149-171-120145-
/O.NEW.KLBF.SV.W.0421.080812T0103Z-080812T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
803 PM CDT MON AUG 11 2008

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BLAINE COUNTY IN NORTH CENTRAL NEBRASKA...
  THIS INCLUDES THE CITY OF BREWSTER...
  SOUTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHERN LOUP COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHWESTERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...
  EXTREME NORTHEASTERN THOMAS COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 845 PM CDT

* AT 801 PM CDT...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 12
  MILES NORTH OF BREWSTER...AND MOVING SOUTHEAST AT 28 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  8 MILES NORTHEAST OF BREWSTER BY 820 PM CDT...
  ALMERIA MEADOW STATE WILDLIFE MANAGEMENT AREA BY 835 PM CDT...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4193 9928 4174 10023 4208 10030 4208 10025
      4208 10024 4208 10017 4216 10016 4228 9979
TIME...MOT...LOC 0103Z 311DEG 24KT 4210 9987

$$

SPRINGER

2 follow-up statements

000 
WWUS53 KLBF 120124
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
824 PM CDT MON AUG 11 2008

NEC009-017-115-149-171-120145-
/O.CON.KLBF.SV.W.0421.000000T0000Z-080812T0145Z/
BLAINE NE-THOMAS NE-LOUP NE-ROCK NE-BROWN NE-
824 PM CDT MON AUG 11 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHERN BROWN...SOUTHWESTERN ROCK...NORTHERN LOUP...EXTREME
NORTHEASTERN THOMAS AND BLAINE COUNTIES...

AT 819 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHWEST OF HIGHWAY
183 MILE MARKER 140 TO 6 MILES SOUTHWEST OF DUNNING...OR ALONG A LINE
EXTENDING FROM 19 MILES NORTHEAST OF BREWSTER TO 21 MILES SOUTHWEST
OF BREWSTER...MOVING SOUTHEAST AT 26 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  HIGHWAY 183 MILE MARKER 140 BY 835 PM CDT...
  HORSESHOE BEND LAKE BY 840 PM CDT...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4193 9928 4174 10023 4208 10030 4208 10025
      4208 10024 4208 10017 4216 10016 4228 9979
TIME...MOT...LOC 0124Z 311DEG 22KT 4202 9950 4174 10015

$$

SPRINGER

000 
WWUS53 KLBF 120147
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
847 PM CDT MON AUG 11 2008

NEC009-017-115-149-171-120156-
/O.EXP.KLBF.SV.W.0421.000000T0000Z-080812T0145Z/
BLAINE NE-THOMAS NE-LOUP NE-ROCK NE-BROWN NE-
846 PM CDT MON AUG 11 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BROWN...SOUTHWESTERN
ROCK...NORTHERN LOUP...EXTREME NORTHEASTERN THOMAS AND BLAINE
COUNTIES HAS EXPIRED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR WESTERN NEBRASKA.

THUNDERSTORMS WITH HEAVY RAIN AND STRONG WIND ARE EXPECTED TO 
CONTINUE FOR AWHILE...BUT THE STRONGEST STORMS HAD MOVED INTO THE 
SOUTHERN PARTS OF LOUP AND BLAINE COUNTIES. 

LAT...LON 4193 9928 4174 10023 4208 10030 4208 10025
      4208 10024 4208 10017 4216 10016 4228 9979
TIME...MOT...LOC 0124Z 311DEG 22KT 4202 9950 4174 10015

$$

SPRINGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 7:09 PM CDT	Tornado Warning	LBF	Brown	42 min
Aug 11, 7:15 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	45 min
Aug 11, 7:17 PM CDT	Severe Thunderstorm Warning	LBF	Brown	43 min
Aug 11, 7:28 PM CDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	32 min
Aug 11, 7:37 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry	38 min
Aug 11, 8:00 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Hooker, Logan, McPherson, Thomas	45 min
Aug 11, 8:14 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Loup	61 min
Aug 11, 8:17 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan, McPherson	43 min
Aug 11, 8:51 PM CDT	Severe Thunderstorm Warning	LBF	Custer	54 min
Aug 11, 9:11 PM CDT	Severe Thunderstorm Warning	LBF	Custer	52 min
Aug 11, 9:38 PM CDT	Severe Thunderstorm Warning	LBF	Custer	37 min
Aug 11, 10:52 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	53 min
Aug 11, 11:18 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	42 min
Aug 11, 11:49 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	26 min
Aug 12, 6:51 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	54 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2008 Every severe thunderstorm warning in 2008

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.