Alert archive / Nebraska / Tornado Warnings in 2009

Tornado Warning 41, NWS North Platte, NE

June 17, 2009Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 17, 2009, 6:47 PM CDT for Boyd County, Holt County, Nebraska. It was in force for 43 min. 2 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: Jun 17, 2009, 6:47 PM CDT (23:47 UTC)
Expired: Jun 17, 2009, 7:30 PM CDT
In force: 43 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Boyd County, NE, Holt County, NE

The radar

The Sioux Falls radar (KFSD), 166 km from the middle of the area, began a volume at 23:46 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
Jun 17, 6:53 PM CDT	HAIL 0.75	Butte, NE
Jun 17, 7:30 PM CDT	HAIL 1	1 E Gross, NE

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
Jun 17, 6:21 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.8 hours before the alert went out and 221 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: 368 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 831 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 172347
TORLBF
NEC015-089-180030-
/O.NEW.KLBF.TO.W.0041.090617T2347Z-090618T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
647 PM CDT WED JUN 17 2009

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  BOYD COUNTY IN NORTH CENTRAL NEBRASKA...
  THIS INCLUDES THE CITY OF SPENCER...
  EXTREME NORTHWESTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 730 PM CDT

* AT 646 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BUTTE...OR
  11 MILES NORTHWEST OF SPENCER...MOVING EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  ANOKA AND 6 MILES NORTH OF PARSHALL BRIDGE STATE WILDLIFE
  MANAGEMENT AREA BY 655 PM CDT...
  SPENCER BY 705 PM CDT...
  GROSS BY 715 PM CDT...
  GROSS AND BRISTOW BY 720 PM CDT...
  LYNCH BY 725 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLFBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR SOUTHWESTERN NEBRASKA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS
IN EFFECT UNTIL 100 AM CDT THURSDAY MORNING FOR NORTH CENTRAL
NEBRASKA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL
200 AM CDT THURSDAY MORNING FOR THE PANHANDLE AND NORTHWESTERN
NEBRASKA.

&&

LAT...LON 4294 9845 4293 9839 4288 9830 4275 9830
      4286 9905 4300 9903 4300 9850
TIME...MOT...LOC 2347Z 277DEG 27KT 4294 9890

$$

DDB

2 follow-up statements

000 
WWUS53 KLBF 180005
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
705 PM CDT WED JUN 17 2009

NEC015-089-180030-
/O.CON.KLBF.TO.W.0041.000000T0000Z-090618T0030Z/
HOLT NE-BOYD NE-
705 PM CDT WED JUN 17 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR BOYD AND
NORTHWESTERN HOLT COUNTIES...

AT 702 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HIGHWAY 281 MILE
MARKER 220...OR NEAR SPENCER...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
  GROSS AND BRISTOW BY 715 PM CDT...
  LYNCH BY 725 PM CDT...
  6 MILES NORTHWEST OF MONOWI BY 730 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR SOUTHWESTERN NEBRASKA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS
IN EFFECT UNTIL 100 AM CDT THURSDAY MORNING FOR NORTH CENTRAL
NEBRASKA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL
200 AM CDT THURSDAY MORNING FOR THE PANHANDLE AND NORTHWESTERN
NEBRASKA.

&&

LAT...LON 4294 9845 4293 9839 4288 9830 4275 9830
      4286 9905 4300 9903 4300 9850
TIME...MOT...LOC 0005Z 279DEG 28KT 4292 9868

$$

DDB

000 
WWUS53 KLBF 180028
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
728 PM CDT WED JUN 17 2009

NEC015-089-180037-
/O.EXP.KLBF.TO.W.0041.000000T0000Z-090618T0030Z/
HOLT NE-BOYD NE-
728 PM CDT WED JUN 17 2009

...THE TORNADO WARNING FOR BOYD AND NORTHWESTERN HOLT COUNTIES WILL
EXPIRE AT 730 PM CDT...

THE THUNDERSTORM OVER BOYD AND NORTHWESTERN HOLT COUNTIES HAS 
WEAKENED SLIGHTLY.  SMALL HAIL AND WIND GUSTS TO 45 MPH ARE STILL 
POSSIBLE WITH THE STORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR SOUTHWESTERN NEBRASKA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS
IN EFFECT UNTIL 100 AM CDT THURSDAY MORNING FOR NORTH CENTRAL
NEBRASKA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL
200 AM CDT THURSDAY MORNING FOR THE PANHANDLE AND NORTHWESTERN
NEBRASKA.

LAT...LON 4294 9845 4293 9839 4288 9830 4275 9830
      4286 9905 4300 9903 4300 9850
TIME...MOT...LOC 0027Z 279DEG 28KT 4289 9845

$$

DDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 5:37 PM CDT	Tornado Warning	LBF	Boyd, Holt, Keya Paha	38 min
Jun 17, 5:50 PM CDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	55 min
Jun 17, 6:15 PM CDT	Tornado Warning	LBF	Boyd, Holt, Keya Paha	30 min
Jun 17, 6:32 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	58 min
Jun 17, 6:36 PM CDT	Severe Thunderstorm Warning	LBF	Custer	54 min
Jun 17, 6:41 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	64 min

Nearby

Tornado Warnings in Nebraska, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.