Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 147, NWS North Platte, NE

June 24, 2011Brown County, Cherry County, Keya Paha County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 24, 2011, 9:06 PM CDT for Brown County, Cherry County, Keya Paha County, Nebraska. It was in force for 39 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 24, 2011, 9:06 PM CDT (02:06 UTC)
Expired: Jun 24, 2011, 9:45 PM CDT
In force: 39 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

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

The radar

The North Platte radar (KLNX), 66 km from the middle of the area, began a volume at 02:10 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
Jun 24, 6:46 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.1 hours before the alert went out and 158 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: 1879 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 1650 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 9.9

Open this sounding in Storm Lab

The text

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

902 
WUUS53 KLBF 250206 RRA
SVRLBF
NEC017-031-103-250245-
/O.NEW.KLBF.SV.W.0147.110625T0206Z-110625T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
906 PM CDT FRI JUN 24 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 945 PM CDT/845 PM MDT/

* AT 905 PM CDT/805 PM MDT/...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 6 MILES
  NORTHEAST OF CROOKSTON TO VALENTINE NATIONAL WILDLIFE REFUGE TO
  MULLEN...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VALENTINE...SCHLAGEL CREEK STATE WILDLIFE MANAGEMENT AREA...
  VALENTINE NATIONAL WILDLIFE REFUGE...HIGHWAY 83 CROSSING GOOSE
  CREEK...BROWNLEE...HIGHWAY 83 CROSSING THE NORTH LOUP RIVER...SMITH
  FALLS STATE PARK...SPARKS...HIGHWAY 83 MILE MARKER 220...HIGHWAY 20
  MILE MARKER 210...HIGHWAY 12 MILE MARKER 10...WOOD LAKE AND HIGHWAY
  83 MILE MARKER 160.

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.

IF ON OR NEAR VALENTINE WILDLIFE REFUGE...GET OUT OF THE WATER AND 
MOVE INDOORS OR INSIDE A VEHICLE. IF YOU CAN HEAR THUNDER...YOU ARE 
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. IN ADDITION...THUNDERSTORMS 
CAN PRODUCE LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. 
MOVE INTO DOCK AND SEEK SAFE SHELTER NOW. DON'T BE CAUGHT ON THE 
WATER IN A THUNDERSTORM.

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

&&

LAT...LON 4254 10008 4209 10036 4210 10131 4256 10081
      4301 10090 4301 10017
TIME...MOT...LOC 0206Z 270DEG 25KT 4298 10065 4256 10059
          4206 10105
WIND...HAIL 70MPH 1.00IN

$$

JACOBS

1 follow-up statement

836 
WWUS53 KLBF 250243
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
943 PM CDT FRI JUN 24 2011

NEC017-031-103-250253-
/O.EXP.KLBF.SV.W.0147.000000T0000Z-110625T0245Z/
BROWN NE-KEYA PAHA NE-CHERRY NE-
943 PM CDT FRI JUN 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHERRY...EXTREME
NORTHWESTERN KEYA PAHA AND NORTHWESTERN BROWN COUNTIES WILL EXPIRE AT
945 PM CDT/845 PM MDT/...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.

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 4254 10008 4209 10036 4210 10131 4256 10081
      4301 10090 4301 10017
TIME...MOT...LOC 0243Z 270DEG 25KT 4298 10030 4256 10024
          4206 10070

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 7:54 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	51 min
Jun 24, 8:13 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Garden, Grant, Hooker, Sheridan	47 min
Jun 24, 8:37 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	38 min
Jun 24, 8:53 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Grant, Hooker	52 min
Jun 24, 9:06 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	39 min
Jun 24, 9:40 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	50 min
Jun 25, 1:45 AM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	60 min
Jun 25, 2:44 AM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.