Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 7, NWS North Platte, NE

August 19, 2021Chase County, Perkins County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 19, 2021, 5:10 PM MDT for Chase County, Perkins County, Nebraska. It was in force for 50 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: Aug 19, 2021, 5:10 PM MDT (23:10 UTC)
Expired: Aug 19, 2021, 6:00 PM MDT
In force: 50 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.5 in

Counties Chase County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 148 km from the middle of the area, began a volume at 23:12 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
Aug 19, 1:14 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.2 hours before the alert went out and 123 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: 541 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

549 
WFUS53 KLBF 192310
TORLBF
NEC029-135-200000-
/O.NEW.KLBF.TO.W.0007.210819T2310Z-210820T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
510 PM MDT Thu Aug 19 2021

The National Weather Service in North Platte has issued a

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

* Until 600 PM MDT.
    
* At 509 PM MDT, a severe thunderstorm capable of producing a tornado
  was located near Pleasant Valley, or 11 miles east of Holyoke,
  moving northeast at 20 mph.

  HAZARD...Tornado and ping pong ball 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...
  Venango, Lamar, Chase and Brandon. 

This includes Highway 61 between mile markers 47 and 50.
 
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 4076 10205 4085 10196 4062 10157 4045 10205
TIME...MOT...LOC 2309Z 237DEG 16KT 4056 10208 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

Taylor

2 follow-up statements

210 
WWUS53 KLBF 192327
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
527 PM MDT Thu Aug 19 2021

NEC029-135-200000-
/O.CON.KLBF.TO.W.0007.000000T0000Z-210820T0000Z/
Perkins NE-Chase NE-
527 PM MDT Thu Aug 19 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR
SOUTHWESTERN PERKINS AND NORTHWESTERN CHASE COUNTIES...
    
At 526 PM MDT, a severe thunderstorm capable of producing a tornado 
was located near Lamar, or 15 miles east of Holyoke, moving 
northeast at 15 mph.

HAZARD...Tornado and ping pong ball 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...
Venango, Lamar, Chase and Brandon. 

This includes Highway 61 between mile markers 47 and 50.
 
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 4076 10205 4085 10196 4062 10157 4045 10205
TIME...MOT...LOC 2326Z 246DEG 13KT 4056 10201 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

Taylor

030 
WWUS53 KLBF 192343
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
543 PM MDT Thu Aug 19 2021

NEC029-135-200000-
/O.CON.KLBF.TO.W.0007.000000T0000Z-210820T0000Z/
Perkins NE-Chase NE-
543 PM MDT Thu Aug 19 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR
SOUTHWESTERN PERKINS AND NORTHWESTERN CHASE COUNTIES...
    
At 543 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Lamar, or 16 miles northwest of Imperial, moving
northeast at 15 mph.

HAZARD...Tornado and ping pong ball 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...
Venango, Lamar, Chase and Brandon. 

This includes Highway 61 between mile markers 47 and 50.
 
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 4076 10205 4085 10196 4062 10157 4045 10205
TIME...MOT...LOC 2343Z 219DEG 13KT 4061 10193 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 3:00 PM MDT	Special Weather Statement	LBF	Deuel	45 min
Aug 19, 3:13 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	47 min
Aug 19, 3:22 PM MDT	Special Weather Statement	LBF	Sheridan	38 min
Aug 19, 4:01 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	44 min
Aug 19, 4:02 PM MDT	Areal Flood Advisory	LBF	Deuel	3 hr
Aug 19, 4:35 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	40 min
Aug 19, 4:48 PM MDT	Areal Flood Advisory	LBF	Garden	3 hr
Aug 19, 4:48 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	27 min
Aug 19, 4:50 PM MDT	Special Weather Statement	LBF	Garden	40 min
Aug 19, 5:00 PM MDT	Special Weather Statement	LBF	Perkins	45 min
Aug 19, 5:17 PM MDT	Severe Thunderstorm Warning	LBF	Keith	43 min
Aug 19, 5:19 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Arthur	41 min
Aug 19, 5:23 PM MDT	Special Weather Statement	LBF	Grant	52 min
Aug 19, 5:44 PM MDT	Areal Flood Advisory	LBF	Keith	3 hr
Aug 19, 5:59 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	46 min

Nearby

Tornado Warnings in Nebraska, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.