Alert archive / Nebraska / Tornado Warnings in 2020

Tornado Warning 10, NWS North Platte, NE

July 8, 2020Perkins County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 8, 2020, 5:51 PM MDT for Perkins County, Nebraska. It was in force for 39 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: Jul 8, 2020, 5:51 PM MDT (23:51 UTC)
Expired: Jul 8, 2020, 6:30 PM MDT
In force: 39 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Observed
Hail: 1.0 in

County Perkins County, NE

The radar

The North Platte radar (KLNX), 166 km from the middle of the area, began a volume at 23:55 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
Jul 8, 5:55 PM MDT	TORNADO	4 N Venango, NE	LANDSPOUT TORNADO
Jul 8, 5:55 PM MDT	TORNADO	5 N Venango, NE	ROPE TORNADO SPOTTED ON THE GROUND, INCREASING IN INTENSITY BY VOLUNTEER FIRE DEPARTMENT.

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
Jul 8, 4:10 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.9 hours before the alert went out and 119 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: 368 J/kg
Mixed-layer CIN: -412 J/kg
Mixed-layer LCL: 2117 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

271 
WFUS53 KLBF 082351
TORLBF
NEC135-090030-
/O.NEW.KLBF.TO.W.0010.200708T2351Z-200709T0030Z/

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

The National Weather Service in North Platte has issued a

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

* Until 630 PM MDT.

* At 551 PM MDT, a confirmed tornado was located 7 miles north of
  Venango, or 13 miles south of Big Springs, moving east at 15 mph.

  HAZARD...Damaging tornado and quarter 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.

* This tornadic thunderstorm will remain over mainly rural areas of
  northwestern Perkins County, including the following locations...
  Brandon.

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 4094 10206 4099 10205 4100 10187 4079 10182
      4078 10205
TIME...MOT...LOC 2351Z 262DEG 15KT 4087 10200 

TORNADO...OBSERVED
HAIL...1.00IN

$$

Taylor

2 follow-up statements

082 
WWUS53 KLBF 090010
SVSLBF

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

NEC135-090030-
/O.CON.KLBF.TO.W.0010.000000T0000Z-200709T0030Z/
Perkins NE-
610 PM MDT Wed Jul 8 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR
NORTHWESTERN PERKINS COUNTY...
    
At 606 PM MDT, several sightings of landspout type tornadoes have 
been reported. Remain vigilant for further landspout type tornadoes 
to develop. 

HAZARD...landspout tornado and quarter 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...
Brandon.

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 4094 10206 4099 10205 4100 10187 4079 10182
      4078 10205
TIME...MOT...LOC 0006Z 262DEG 15KT 4088 10191 

TORNADO...OBSERVED
HAIL...1.00IN

$$

Taylor

926 
WWUS53 KLBF 090035
SVSLBF

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

NEC135-090044-
/O.EXP.KLBF.TO.W.0010.000000T0000Z-200709T0030Z/
Perkins NE-
635 PM MDT Wed Jul 8 2020

...THE TORNADO WARNING FOR NORTHWESTERN PERKINS COUNTY HAS EXPIRED...
    
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 4094 10206 4099 10205 4100 10187 4079 10182
      4078 10205
TIME...MOT...LOC 0034Z 262DEG 15KT 4090 10176 

$$

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 6:16 PM MDT	Special Weather Statement	LBF	Deuel	44 min
Jul 7, 6:49 PM MDT	Special Weather Statement	LBF	Sheridan	41 min
Jul 7, 7:09 PM MDT	Special Weather Statement	LBF	Chase, Deuel	51 min
Jul 7, 9:57 PM MDT	Special Weather Statement	LBF	Garden, Sheridan	63 min
Jul 7, 10:34 PM MDT	Special Weather Statement	LBF	Chase, Deuel	56 min
Jul 7, 11:01 PM MDT	Special Weather Statement	LBF	Sheridan	59 min
Jul 7, 11:40 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	50 min
Jul 8, 12:00 AM MDT	Special Weather Statement	LBF	Garden	30 min
Jul 8, 12:29 AM MDT	Special Weather Statement	LBF	Grant	61 min
Jul 8, 12:32 AM MDT	Special Weather Statement	LBF	Deuel, Garden	58 min
Jul 8, 1:13 AM MDT	Special Weather Statement	LBF	Sheridan	47 min
Jul 8, 1:31 AM MDT	Special Weather Statement	LBF	Cherry, Grant	44 min
Jul 8, 1:33 AM MDT	Special Weather Statement	LBF	Deuel, Garden	42 min
Jul 8, 2:12 AM MDT	Special Weather Statement	LBF	Cherry	48 min
Jul 8, 4:51 PM MDT	Severe Thunderstorm Warning	LBF	Keya Paha	39 min
Jul 8, 5:11 PM MDT	Special Weather Statement	LBF	Deuel	49 min
Jul 8, 5:17 PM MDT	Severe Thunderstorm Warning	LBF	Deuel	43 min
Jul 8, 5:26 PM MDT	Severe Thunderstorm Warning	LBF	Keya Paha	49 min
Jul 8, 5:43 PM MDT	Special Weather Statement	LBF	Brown	47 min

Nearby

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