Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 6, NWS North Platte, NE

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

NWS North Platte, NE issued this tornado warning at Jun 17, 2018, 3:32 PM MDT for Arthur County, Keith County, McPherson County, Nebraska. It was in force for 43 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, 3:32 PM MDT (21:32 UTC)
Expired
Jun 17, 2018, 4:15 PM MDT
In force
43 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

Counties Arthur County, NE, Keith County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 21:33 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, 4:01 PM MDTTORNADO16 N Paxton, NEDELAYED REPORT.
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.

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, 9.5 hours before the alert went out and 74 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.

968 
WFUS53 KLBF 172132
TORLBF
NEC005-101-117-172215-
/O.NEW.KLBF.TO.W.0006.180617T2132Z-180617T2215Z/

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

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southeastern Arthur County in west central Nebraska...
  Northeastern Keith County in southwestern Nebraska...
  Southwestern McPherson County in west central Nebraska...

* Until 515 PM CDT/415 PM MDT/.
    
* At 431 PM CDT/331 PM MDT/, a severe thunderstorm capable of
  producing a tornado was located near Keystone, or 11 miles
  northeast of Ogallala, 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 tornadic thunderstorm will remain over mainly rural areas of
  southeastern Arthur...northeastern Keith and southwestern McPherson
  Counties, including the following locations... Big Bald Hill,
  Diamond Bar Lake, Broganville and Bucktail Lake.

This includes the following highways...
 Highway 61 between mile markers 93 and 109.
 Highway 92 between mile markers 137 and 138.

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 4157 10148 4149 10119 4140 10120 4139 10127
      4124 10127 4116 10166 4134 10179
TIME...MOT...LOC 2131Z 239DEG 22KT 4129 10162 

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

$$

JWS
3 follow-up statements
405 
WWUS53 KLBF 172147
SVSLBF

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

NEC005-101-117-172215-
/O.CON.KLBF.TO.W.0006.000000T0000Z-180617T2215Z/
Arthur NE-Keith NE-McPherson NE-
447 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT/415 PM MDT/
FOR SOUTHEASTERN ARTHUR...NORTHEASTERN KEITH AND SOUTHWESTERN
MCPHERSON COUNTIES...
    
At 446 PM CDT/346 PM MDT/, a severe thunderstorm capable of producing
a tornado was located 9 miles northeast of Keystone, or 18 miles
northeast of Ogallala, 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.

Locations impacted include...
Keystone, Kingsley Dam, Big Bald Hill, Diamond Bar Lake, Broganville
and Bucktail Lake.

This includes the following highways...
 Highway 61 between mile markers 93 and 109.
 Highway 92 between mile markers 137 and 138.

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 4157 10148 4149 10119 4140 10120 4139 10127
      4124 10127 4116 10166 4134 10179
TIME...MOT...LOC 2146Z 239DEG 22KT 4134 10151 

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

$$

JWS
879 
WWUS53 KLBF 172158
SVSLBF

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

NEC005-101-117-172215-
/O.CON.KLBF.TO.W.0006.000000T0000Z-180617T2215Z/
Arthur NE-Keith NE-McPherson NE-
458 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT/415 PM MDT/
FOR SOUTHEASTERN ARTHUR...NORTHEASTERN KEITH AND SOUTHWESTERN
MCPHERSON COUNTIES...
    
At 458 PM CDT/358 PM MDT/, a severe thunderstorm capable of producing
a tornado was located 14 miles north of Sarben, or 21 miles southeast
of Arthur, moving northeast at 30 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.

Locations impacted include...
Big Bald Hill, Diamond Bar Lake, Broganville and Bucktail Lake. 

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 4157 10148 4149 10119 4140 10120 4139 10127
      4124 10127 4118 10155 4138 10168
TIME...MOT...LOC 2158Z 242DEG 31KT 4136 10138 

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

$$

JWS
737 
WWUS53 KLBF 172206
SVSLBF

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

NEC005-101-117-172215-
/O.CON.KLBF.TO.W.0006.000000T0000Z-180617T2215Z/
Arthur NE-Keith NE-McPherson NE-
506 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT/415 PM MDT/
FOR SOUTHEASTERN ARTHUR...NORTHEASTERN KEITH AND SOUTHWESTERN
MCPHERSON COUNTIES...
    
At 505 PM CDT/405 PM MDT/, a confirmed tornado was located 15 miles
north of Sarben, or 23 miles southeast of Arthur, 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.

Locations impacted include...
Big Bald Hill, Diamond Bar Lake, Broganville and Bucktail Lake. 

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 4157 10148 4149 10119 4140 10120 4139 10127
      4124 10127 4118 10155 4138 10168
TIME...MOT...LOC 2205Z 241DEG 21KT 4138 10132 

TORNADO...OBSERVED
HAIL...1.25IN

$$

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, 3:59 PM MDTSpecial Weather StatementLBFLincoln46 min
Jun 17, 4:07 PM MDTTornado Warning Tornado observedLBFKeith, Lincoln, McPherson38 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.