Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 1, NWS North Platte, NE

May 23, 2021Deuel County, Garden County, Nebraska

NWS North Platte, NE issued this tornado warning at May 23, 2021, 4:33 PM MDT for Deuel County, Garden County, Nebraska. It was in force for 42 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: May 23, 2021, 4:33 PM MDT (22:33 UTC)
Expired: May 23, 2021, 5:15 PM MDT
In force: 42 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Deuel County, NE, Garden County, NE

The radar

The North Platte radar (KLNX), 181 km from the middle of the area, began a volume at 22:35 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
May 23, 12:06 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.6 hours before the alert went out and 165 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: 962 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 610 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

923 
WFUS53 KLBF 232233
TORLBF
NEC049-069-232315-
/O.NEW.KLBF.TO.W.0001.210523T2233Z-210523T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
433 PM MDT Sun May 23 2021

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southwestern Garden County in the Panhandle of Nebraska...
  Western Deuel County in the Panhandle of Nebraska...

* Until 515 PM MDT.
    
* At 432 PM MDT, a severe thunderstorm capable of producing a tornado
  was located over Twin Buttes, or 17 miles southeast of Sidney,
  moving north at 50 mph.

  HAZARD...Tornado and golf 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.

* This tornadic thunderstorm will remain over mainly rural areas of
  southwestern Garden and western Deuel Counties, including the
  following locations... Mount Vernon.

This includes Interstate 80 in Nebraska between mile markers 78 and
83.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4137 10244 4100 10252 4101 10262 4139 10261
      4140 10264 4142 10263
TIME...MOT...LOC 2232Z 189DEG 42KT 4093 10279 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Jacobs

1 follow-up statement

920 
WWUS53 KLBF 232255
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
455 PM MDT Sun May 23 2021

NEC049-069-232315-
/O.CON.KLBF.TO.W.0001.000000T0000Z-210523T2315Z/
Garden NE-Deuel NE-
455 PM MDT Sun May 23 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR
SOUTHWESTERN GARDEN AND WESTERN DEUEL COUNTIES...
    
At 455 PM MDT, a severe thunderstorm capable of producing a tornado
was located over Lodgepole, or 8 miles northwest of Chappell, moving
north at 50 mph.

HAZARD...Tornado and golf 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.

This tornadic thunderstorm will remain over mainly rural areas of
southwestern Garden and western Deuel Counties, including the
following locations... Mount Vernon.

This includes Interstate 80 in Nebraska between mile markers 78 and
83.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4137 10244 4100 10252 4101 10262 4139 10261
      4140 10264 4142 10263
TIME...MOT...LOC 2255Z 199DEG 43KT 4116 10261 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Jacobs

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 8:17 PM MDT	Special Weather Statement	LBF	Chase	43 min
May 22, 8:21 PM MDT	Special Weather Statement	LBF	Lincoln	39 min
May 22, 8:49 PM MDT	Special Weather Statement	LBF	Perkins	41 min
May 22, 9:07 PM MDT	Special Weather Statement	LBF	Lincoln	23 min
May 22, 9:34 PM MDT	Special Weather Statement	LBF	Chase, Keith, Perkins	26 min
May 22, 10:00 PM MDT	Special Weather Statement	LBF	Chase, Keith, Perkins	45 min
May 22, 10:21 PM MDT	Areal Flood Advisory	LBF	Keith, Perkins	3 hr
May 22, 11:47 PM MDT	Special Weather Statement	LBF	Hooker, McPherson	58 min
May 23, 1:34 PM MDT	Special Weather Statement	LBF	Dawes	41 min
May 23, 1:57 PM MDT	Special Weather Statement	LBF	Garden	33 min
May 23, 2:26 PM MDT	Special Weather Statement	LBF	Sheridan	34 min
May 23, 3:00 PM MDT	Special Weather Statement	LBF	Sheridan	45 min
May 23, 4:37 PM MDT	Special Weather Statement	LBF	Sheridan	38 min
May 23, 5:09 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Grant	51 min
May 23, 5:16 PM MDT	Special Weather Statement	LBF	Sheridan	44 min
May 23, 5:38 PM MDT	Special Weather Statement	LBF	Deuel	52 min
May 23, 5:48 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Garden, Grant, Sheridan	42 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.