Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 7, NWS North Platte, NE

June 17, 2018Keith County, Lincoln County, McPherson County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 17, 2018, 4:07 PM MDT for Keith County, Lincoln County, McPherson County, Nebraska. It was in force for 38 min. 3 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, 2018, 4:07 PM MDT (22:07 UTC)
Expired
Jun 17, 2018, 4:45 PM MDT
In force
38 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Tornado
Observed
Hail
1.25 in

Counties Keith County, NE, Lincoln County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 80 km from the middle of the area, began a volume at 22:05 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.

What was reported inside it

TimeReportWhereRemark
Jun 17, 4:14 PM MDTTSTM WND DMG17 Wsw Tryon, NEREPORTS OF WINDOWS TAKEN OUT, DOOR FRAME BLOWN OUT, AND SHED BLOWN OFF FOUNDATION. AG EQUIPMENT BLOWN MOVED LARGE DISTANCES AND ROOF REMOVED FROM OUTBUILDING. POSSIBLE TORNADO. TIME ESTIMATED FROM RADAR.
Jun 17, 4:16 PM MDTTSTM WND DMG17 Wsw Tryon, NE2 INCH DIAMETER TREE BRANCHES DOWN. TIME ESTIMATED FROM RADAR.
Jun 17, 4:29 PM MDTTORNADO30 W Stapleton, NESOCIAL MEDIA REPORT WITH PHOTO OF POSSIBLE TORNADO ONGOING. LOCATION ESTIMATED VIA SPOTTER LOCATION AND RADAR.

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.

IssuedProductOfficeLasted
Jun 17, 1:35 PM MDTTornado WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.1 hours before the alert went out and 61 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2018-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 74 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2018-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
74 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
840 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
-1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

710 
WFUS53 KLBF 172207
TORLBF
NEC101-111-117-172245-
/O.NEW.KLBF.TO.W.0007.180617T2207Z-180617T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
507 PM CDT SUN JUN 17 2018

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Northeastern Keith County in southwestern Nebraska...
  Northwestern Lincoln County in southwestern Nebraska...
  Southeastern McPherson County in west central Nebraska...

* Until 545 PM CDT/445 PM MDT/.

* At 507 PM CDT/407 PM MDT/, a confirmed tornado was located 15 miles
  north of Sarben, or 21 miles southwest of Tryon, moving northeast
  at 25 mph.

  HAZARD...Damaging tornado and half dollar size hail.

  SOURCE...Weather spotters confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* The tornado will be near...
  Tryon around 545 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Schnick Lake and Diamond Bar Lake.

This includes the following highways...
 Highway 92 between mile markers 188 and 208.
 Highway 97 between mile markers 18 and 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4139 10144 4140 10140 4148 10140 4169 10103
      4144 10080 4137 10095 4124 10131
TIME...MOT...LOC 2207Z 241DEG 21KT 4139 10131 

TORNADO...OBSERVED
HAIL...1.25IN

$$

JWS
2 follow-up statements
826 
WWUS53 KLBF 172220
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
520 PM CDT SUN JUN 17 2018

NEC101-172229-
/O.CAN.KLBF.TO.W.0007.000000T0000Z-180617T2245Z/
Keith NE-
520 PM CDT SUN JUN 17 2018

...THE TORNADO WARNING FOR NORTHEASTERN KEITH COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1000 PM CDT for southwestern
and west central Nebraska.

LAT...LON 4127 10125 4139 10127 4148 10140 4169 10103
      4144 10080 4136 10095 4126 10124
TIME...MOT...LOC 2219Z 241DEG 23KT 4143 10121 

$$

NEC111-117-172245-
/O.CON.KLBF.TO.W.0007.000000T0000Z-180617T2245Z/
Lincoln NE-McPherson NE-
520 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHWESTERN LINCOLN AND SOUTHEASTERN MCPHERSON COUNTIES...
    
At 519 PM CDT, a severe thunderstorm capable of producing a tornado
was located 16 miles southwest of Tryon, moving northeast at 25 mph.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Tryon around 545 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Schnick Lake and Diamond Bar Lake.

This includes the following highways...
 Highway 92 between mile markers 188 and 208.
 Highway 97 between mile markers 18 and 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4127 10125 4139 10127 4148 10140 4169 10103
      4144 10080 4136 10095 4126 10124
TIME...MOT...LOC 2219Z 241DEG 23KT 4143 10121 

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

$$

JWS
198 
WWUS53 KLBF 172238
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
538 PM CDT SUN JUN 17 2018

NEC111-172247-
/O.CAN.KLBF.TO.W.0007.000000T0000Z-180617T2245Z/
Lincoln NE-
538 PM CDT SUN JUN 17 2018

...THE TORNADO WARNING FOR NORTHWESTERN LINCOLN COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1000 PM CDT for southwestern
and west central Nebraska.

LAT...LON 4169 10103 4144 10080 4139 10089 4139 10096
      4140 10096 4140 10128 4148 10140
TIME...MOT...LOC 2237Z 240DEG 32KT 4151 10101 

$$

NEC117-172245-
/O.CON.KLBF.TO.W.0007.000000T0000Z-180617T2245Z/
McPherson NE-
538 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHEASTERN MCPHERSON COUNTY...
        
At 537 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Tryon, moving northeast at 35 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Weather spotters reported a funnel cloud.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
southeastern McPherson County, including the following locations...
Schnick Lake and Diamond Bar Lake.

This includes the following highways...
 Highway 92 between mile markers 188 and 208.
 Highway 97 between mile markers 18 and 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4169 10103 4144 10080 4139 10089 4139 10096
      4140 10096 4140 10128 4148 10140
TIME...MOT...LOC 2237Z 240DEG 32KT 4151 10101 

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

$$

JWS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 6:32 PM MDTSpecial Weather StatementLBFCherry28 min
Jun 16, 6:48 PM MDTAreal Flood AdvisoryLBFCherry, Sheridan3 hr
Jun 16, 7:46 PM MDTAreal Flood AdvisoryLBFSheridan3 hr
Jun 17, 1:13 AM MDTFlash Flood WatchLBFCherry, Sheridan25 hr
Jun 17, 1:53 PM MDTSevere Thunderstorm WarningLBFDeuel37 min
Jun 17, 2:08 PM MDTTornado WarningLBFDeuel52 min
Jun 17, 2:30 PM MDTTornado Warning Tornado observedLBFDeuel, Keith45 min
Jun 17, 3:06 PM MDTTornado WarningLBFKeith39 min
Jun 17, 3:32 PM MDTTornado WarningLBFArthur, Keith, McPherson43 min
Jun 17, 3:59 PM MDTSpecial Weather StatementLBFLincoln46 min
Jun 17, 4:16 PM MDTSevere Thunderstorm WarningLBFLogan44 min
Jun 17, 4:29 PM MDTSevere Thunderstorm WarningLBFLincoln, Logan, McPherson46 min
Jun 17, 4:40 PM MDTTornado WarningLBFLogan, McPherson50 min
Jun 17, 4:47 PM MDTSevere Thunderstorm WarningLBFBlaine, Custer, Logan, Thomas43 min
Jun 17, 5:29 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown33 min
Jun 17, 5:48 PM MDTSevere Thunderstorm WarningLBFBlaine, Loup, Rock42 min
Jun 17, 5:53 PM MDTSpecial Weather StatementLBFHolt52 min

Nearby

Tornado Warnings in Nebraska, 2018Every tornado warning in 2018Tornadoes in 2018

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.