Alert archive / Nebraska / Tornado Warnings in 2013

Tornado Warning 6, NWS North Platte, NE

May 18, 20134 counties in Nebraska

NWS North Platte, NE issued this tornado warning at May 18, 2013, 6:15 PM MDT for 4 counties in Nebraska. It was in force for 30 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: May 18, 2013, 6:15 PM MDT (00:15 UTC)
Expired: May 18, 2013, 6:45 PM MDT
In force: 30 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

Counties Arthur County, NE, Deuel County, NE, Garden County, NE, Keith County, NE

The radar

The North Platte radar (KLNX), 126 km from the middle of the area, began a volume at 00:16 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
May 18, 1:42 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.3 hours before the alert went out and 125 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: 2765 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1159 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

300 
WFUS53 KLBF 190015
TORLBF
NEC005-049-069-101-190045-
/O.NEW.KLBF.TO.W.0006.130519T0015Z-130519T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
615 PM MDT SAT MAY 18 2013

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...
  NORTHEASTERN DEUEL COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTHEASTERN GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...
  NORTHWESTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 645 PM MDT

* AT 611 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR WINDLASS HILL...AND MOVING NORTHEAST AT 50
  MPH.

  HAZARD...DEVELOPING TORNADO AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

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

* LOCATIONS IMPACTED INCLUDE...
  ASH HOLLOW STATE HISTORICAL PARK...LEWELLEN...CLEAR CREEK STATE
  WILDLIFE MANAGEMENT AREA...BLUEWATER BATTLEFIELD STATE HISTORICAL
  PARK...BOURQUIM HILL...VELMA AND JENSEN LAKE.

THIS INCLUDES HIGHWAY 61 BETWEEN MILE MARKERS 130 AND 133.

THIS INCLUDES HIGHWAY 92 BETWEEN MILE MARKERS 115 AND 121.

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 4175 10196 4174 10182 4166 10167 4115 10217
      4125 10237
TIME...MOT...LOC 0015Z 218DEG 45KT 4130 10216

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

POWER

2 follow-up statements

280 
WWUS53 KLBF 190023
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
723 PM CDT SAT MAY 18 2013

NEC005-049-069-101-190045-
/O.CON.KLBF.TO.W.0006.000000T0000Z-130519T0045Z/
DEUEL NE-GARDEN NE-KEITH NE-ARTHUR NE-
623 PM MDT SAT MAY 18 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN ARTHUR...
NORTHWESTERN KEITH...SOUTHEASTERN GARDEN AND NORTHEASTERN DEUEL
COUNTIES UNTIL 645 PM MDT...

AT 620 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR LEWELLEN...AND MOVING NORTHEAST AT 40 MPH.

HAZARD...DEVELOPING TORNADO AND HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

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

LOCATIONS IMPACTED INCLUDE...
CLEAR CREEK STATE WILDLIFE MANAGEMENT AREA...VELMA...BOURQUIM HILL
AND JENSEN LAKE.

THIS INCLUDES HIGHWAY 61 BETWEEN MILE MARKERS 130 AND 132.

THIS INCLUDES HIGHWAY 92 BETWEEN MILE MARKERS 115 AND 121.

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 4175 10196 4174 10182 4166 10167 4115 10217
      4125 10237
TIME...MOT...LOC 0023Z 225DEG 36KT 4135 10213

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

POWER

366 
WWUS53 KLBF 190044
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
744 PM CDT SAT MAY 18 2013

NEC005-049-069-101-190054-
/O.EXP.KLBF.TO.W.0006.000000T0000Z-130519T0045Z/
DEUEL NE-GARDEN NE-KEITH NE-ARTHUR NE-
644 PM MDT SAT MAY 18 2013

...THE TORNADO WARNING FOR WESTERN ARTHUR...NORTHWESTERN KEITH...
SOUTHEASTERN GARDEN AND NORTHEASTERN DEUEL COUNTIES WILL EXPIRE AT
745 PM CDT/645 PM MDT/...

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

LAT...LON 4175 10196 4174 10182 4166 10167 4115 10217
      4125 10237
TIME...MOT...LOC 0044Z 225DEG 36KT 4150 10193

$$

POWER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 6:09 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	51 min
May 18, 6:12 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	48 min
May 18, 6:20 PM MDT	Severe Thunderstorm Warning	LBF	Logan, McPherson, Thomas	40 min
May 18, 6:35 PM MDT	Tornado Warning	LBF	Arthur, Keith, McPherson	25 min
May 18, 6:40 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	50 min
May 18, 6:48 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, McPherson, Perkins	42 min
May 18, 6:56 PM MDT	Severe Thunderstorm Warning	LBF	Chase	49 min
May 18, 7:04 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Grant, Hooker, McPherson	41 min
May 18, 7:09 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry, Thomas	51 min
May 18, 7:45 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	45 min
May 19, 12:15 PM MDT	Areal Flood Advisory	LBF	Garden, Keith, Logan, McPherson, Thomas	136 days
May 19, 12:16 PM MDT	Areal Flood Advisory	LBF	Garden, Keith	9 hr
May 19, 2:56 PM MDT	Severe Thunderstorm Warning	LBF	Garfield	49 min
May 19, 3:21 PM MDT	Severe Thunderstorm Warning	LBF	Wheeler	39 min
May 19, 4:05 PM MDT	Severe Thunderstorm Warning	LBF	Garfield, Loup	40 min
May 19, 4:20 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha	40 min
May 19, 4:26 PM MDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	49 min
May 19, 4:34 PM MDT	Severe Thunderstorm Warning	LBF	Loup, Rock	41 min
May 19, 4:39 PM MDT	Severe Thunderstorm Warning	LBF	Garfield	51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.