Alert archive / Nebraska / Tornado Warnings in 2013

Tornado Warning 21, NWS North Platte, NE

June 21, 2013Keith County, Perkins County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 21, 2013, 6:01 PM MDT for Keith County, Perkins County, Nebraska. It was in force for 29 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 21, 2013, 6:01 PM MDT (00:01 UTC)
Expired: Jun 21, 2013, 6:30 PM MDT
In force: 29 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.5 in

Counties Keith County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 151 km from the middle of the area, began a volume at 00:00 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 21, 6:15 PM MDT	TSTM WND GST 60	6 N Grant, NE	NICKEL SIZE HAIL WAS ALSO REPORTED
Jun 21, 6:25 PM MDT	TSTM WND DMG	4 N Grant, NE	POWER POLES DOWN...ESTIMATED WIND GUSTS TO 70 MPH.

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 21, 5:31 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 99 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: 1500 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 3037 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

485 
WFUS53 KLBF 220001
TORLBF
NEC101-135-220030-
/O.NEW.KLBF.TO.W.0021.130622T0001Z-130622T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
601 PM MDT FRI JUN 21 2013

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL KEITH COUNTY IN SOUTHWEST NEBRASKA...
  WESTERN PERKINS COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 630 PM MDT

* AT 600 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR BRANDON...AND MOVING EAST AT 25 MPH.

  HAZARD...TORNADO AND PING PONG BALL SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
           ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
           WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
           LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  GRANT...MADRID AND WILD HORSE SPRING.

THIS INCLUDES HIGHWAY 61 BETWEEN MILE MARKERS 61 AND 81.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4106 10166 4082 10146 4076 10197 4094 10200
TIME...MOT...LOC 0002Z 264DEG 38KT 4086 10185

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

JACOBS

2 follow-up statements

034 
WWUS53 KLBF 220014
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
714 PM CDT FRI JUN 21 2013

NEC101-220024-
/O.CAN.KLBF.TO.W.0021.000000T0000Z-130622T0030Z/
KEITH NE-
614 PM MDT FRI JUN 21 2013

...THE TORNADO WARNING FOR SOUTH CENTRAL KEITH COUNTY IS CANCELLED...

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

LAT...LON 4081 10181 4093 10194 4101 10164 4101 10162
      4082 10146
TIME...MOT...LOC 0014Z 264DEG 38KT 4089 10171

$$

NEC135-220030-
/O.CON.KLBF.TO.W.0021.000000T0000Z-130622T0030Z/
PERKINS NE-
614 PM MDT FRI JUN 21 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL PERKINS COUNTY
UNTIL 630 PM MDT...

AT 610 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR GRANT...AND MOVING EAST AT 25 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
MADRID.

THIS INCLUDES HIGHWAY 61 BETWEEN MILE MARKERS 63 AND 77.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

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

&&

LAT...LON 4081 10181 4093 10194 4101 10164 4101 10162
      4082 10146
TIME...MOT...LOC 0014Z 264DEG 38KT 4089 10171

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JACOBS

644 
WWUS53 KLBF 220030
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
730 PM CDT FRI JUN 21 2013

NEC135-220040-
/O.EXP.KLBF.TO.W.0021.000000T0000Z-130622T0030Z/
PERKINS NE-
630 PM MDT FRI JUN 21 2013

...THE TORNADO WARNING FOR CENTRAL PERKINS COUNTY HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4081 10181 4093 10194 4101 10164 4101 10162
      4082 10146
TIME...MOT...LOC 0014Z 264DEG 38KT 4089 10171

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 6:15 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	60 min
Jun 21, 6:29 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	46 min
Jun 21, 6:57 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	48 min
Jun 21, 7:12 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	48 min
Jun 21, 7:29 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln, McPherson	46 min
Jun 21, 7:42 PM MDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	48 min
Jun 21, 7:50 PM MDT	Severe Thunderstorm Warning	LBF	Rock	55 min
Jun 21, 7:56 PM MDT	Severe Thunderstorm Warning	LBF	Blaine	49 min
Jun 21, 8:07 PM MDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	38 min
Jun 21, 8:08 PM MDT	Severe Thunderstorm Warning	LBF	Custer, Logan	52 min
Jun 21, 8:09 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan	51 min
Jun 21, 8:27 PM MDT	Severe Thunderstorm Warning	LBF	Brown	48 min
Jun 21, 8:44 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Lincoln, Loup	46 min
Jun 21, 8:48 PM MDT	Severe Thunderstorm Warning	LBF	Rock	42 min
Jun 21, 9:02 PM MDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	43 min
Jun 21, 9:04 PM MDT	Severe Thunderstorm Warning	LBF	Brown	26 min
Jun 21, 9:18 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	27 min
Jun 21, 9:22 PM MDT	Severe Thunderstorm Warning	LBF	Custer	38 min
Jun 21, 9:39 PM MDT	Severe Thunderstorm Warning	LBF	Keya Paha	51 min
Jun 21, 9:59 PM MDT	Severe Thunderstorm Warning	LBF	Custer	46 min
Jun 21, 10:16 PM MDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	44 min

Nearby

Tornado Warnings in Nebraska, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.