Alert archive / Nebraska / Tornado Warnings in 2020

Tornado Warning 11, NWS North Platte, NE

July 8, 2020Perkins County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 8, 2020, 6:00 PM MDT for Perkins County, Nebraska. It was in force for 45 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
Jul 8, 2020, 6:00 PM MDT (00:00 UTC)
Expired
Jul 8, 2020, 6:45 PM MDT
In force
45 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Perkins County, NE

The radar

The Goodland radar (KGLD), 158 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

TimeReportWhereRemark
Jul 8, 6:01 PM MDTTORNADO2 W Grant, NELANDSPOUT TORNADO ROPING UP, GETTING THINNDER. GUSTS UP TO 50 MPH, BLOWING DIRT.
Jul 8, 6:11 PM MDTTORNADO10 Ne Amherst, NEMULTIPLE SPOTTER REPORTS OF UP TO THREE LANDSPOUT TORNADOES.
Jul 8, 6:25 PM MDTTSTM WND GST 581 E Grant, NEUNL MESONET

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
Jul 8, 4:10 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 113 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 00:00Z on 2020-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2624 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 00:00Z on 2020-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
2624 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
2346 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

665 
WFUS53 KLBF 090000
TORLBF
NEC135-090045-
/O.NEW.KLBF.TO.W.0011.200709T0000Z-200709T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
600 PM MDT Wed Jul 8 2020

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southwestern Perkins County in southwestern Nebraska...

* Until 645 PM MDT.
    
* At 558 PM MDT, a line of thunderstorm capable of producing 
  landspouts tornadoes was located along a long from near Venango to 
  near Grant. The storms are nearly stationary. 

  HAZARD...Tornado.

  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...
  Grant around 645 PM MDT.

Other locations impacted by this tornadic thunderstorm include
Brandon.

This includes Highway 61 between mile markers 57 and 71.
 
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 4081 10205 4094 10156 4071 10164 4070 10182
      4070 10205
TIME...MOT...LOC 2358Z 262DEG 14KT 4074 10201 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Taylor
2 follow-up statements
185 
WWUS53 KLBF 090015
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
615 PM MDT Wed Jul 8 2020

NEC135-090045-
/O.CON.KLBF.TO.W.0011.000000T0000Z-200709T0045Z/
Perkins NE-
615 PM MDT Wed Jul 8 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR
SOUTHWESTERN PERKINS COUNTY...
    
At 612 PM MDT, a line of thunderstorms capable of producing 
landspout type tornadoes was located along a line from near Venango 
to Grant. Remain vigilant for development of these landspout type 
tornadoes. 

HAZARD...landspout type tornado.

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...
  Grant around 655 PM MDT.

Other locations impacted by this tornadic thunderstorm include
Brandon.

This includes Highway 61 between mile markers 57 and 71.
 
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 4081 10205 4094 10156 4071 10164 4070 10182
      4070 10205
TIME...MOT...LOC 0012Z 262DEG 14KT 4075 10194 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Taylor
961 
WWUS53 KLBF 090037
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
637 PM MDT Wed Jul 8 2020

NEC135-090047-
/O.EXP.KLBF.TO.W.0011.000000T0000Z-200709T0045Z/
Perkins NE-
637 PM MDT Wed Jul 8 2020

...THE TORNADO WARNING FOR SOUTHWESTERN PERKINS COUNTY WILL EXPIRE AT
645 PM MDT...
    
The tornadic thunderstorm which prompted the warning has been 
replaced with a severe thunderstorm warning.  

A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
southwestern Nebraska.

LAT...LON 4081 10205 4094 10156 4071 10164 4070 10182
      4070 10205
TIME...MOT...LOC 0037Z 262DEG 14KT 4076 10182 

$$

Taylor

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 6:02 PM MDTFlash Flood WarningLBFKeya Paha2 hr
Jul 8, 6:04 PM MDTSevere Thunderstorm WarningLBFBrown, Keya Paha, Rock41 min
Jul 8, 6:19 PM MDTSevere Thunderstorm WarningLBFKeith41 min
Jul 8, 6:26 PM MDTSevere Thunderstorm WarningLBFSheridan49 min
Jul 8, 6:33 PM MDTSevere Thunderstorm WarningLBFChase, Keith, Perkins42 min
Jul 8, 6:44 PM MDTSevere Thunderstorm WarningLBFBrown, Cherry46 min
Jul 8, 6:45 PM MDTSevere Thunderstorm WarningLBFCherry, Garden, Grant, Hooker, Sheridan45 min
Jul 8, 7:04 PM MDTTornado Warning Tornado observedLBFThomas41 min
Jul 8, 7:07 PM MDTSevere Thunderstorm WarningLBFBoyd, Brown, Holt, Rock38 min
Jul 8, 7:16 PM MDTSpecial Weather StatementLBFLincoln29 min
Jul 8, 7:21 PM MDTSpecial Weather StatementLBFChase24 min
Jul 8, 7:26 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown, Loup, Rock, Thomas49 min
Jul 8, 7:36 PM MDTSpecial Weather StatementLBFLogan39 min
Jul 8, 7:38 PM MDTSevere Thunderstorm WarningLBFGarfield, Holt, Rock, Wheeler52 min
Jul 8, 7:45 PM MDTSevere Thunderstorm WarningLBFThomas45 min
Jul 8, 7:54 PM MDTSevere Thunderstorm WarningLBFFrontier, Hayes, Lincoln51 min
Jul 8, 8:04 PM MDTSevere Thunderstorm WarningLBFBlaine, Custer, Garfield, Lincoln, Logan, Loup and 3 more41 min
Jul 8, 8:27 PM MDTSpecial Weather StatementLBFCuster48 min
Jul 8, 8:49 PM MDTAreal Flood AdvisoryLBFBlaine, Loup, Thomas77 min
Jul 8, 8:51 PM MDTSpecial Weather StatementLBFCuster39 min
Jul 8, 8:53 PM MDTSpecial Weather StatementLBFGarfield, Wheeler52 min
Jul 8, 9:03 PM MDTSevere Thunderstorm WarningLBFCuster42 min
Jul 8, 9:16 PM MDTSevere Thunderstorm WarningLBFCuster59 min
Jul 8, 9:31 PM MDTSevere Thunderstorm WarningLBFCuster29 min
Jul 8, 11:21 PM MDTSpecial Weather StatementLBFFrontier39 min

Nearby

Tornado Warnings in Nebraska, 2020Every tornado warning in 2020Tornadoes in 2020

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.