Alert archive / Nebraska / Tornado Warnings in 2023

Tornado Warning 5, NWS North Platte, NE

May 12, 2023Custer County, Logan County, Nebraska

NWS North Platte, NE issued this tornado warning at May 12, 2023, 12:37 PM CDT for Custer County, Logan County, Nebraska. It was in force for 38 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: May 12, 2023, 12:37 PM CDT (17:37 UTC)
Expired: May 12, 2023, 1:15 PM CDT
In force: 38 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Custer County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 53 km from the middle of the area, began a volume at 17:41 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
May 12, 12:42 PM CDT	TORNADO	4 N Arnold, NE	CUSTER COUNTY EMERGENCY MANAGER REPORTS A TORNADO ON THE GROUND. HAS SINCE LIFTED.
May 12, 12:47 PM CDT	TORNADO	5 Nnw Arnold, NE	BRIEF TORNADO TOUCHDOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 5.6 hours before the alert went out and 59 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: 96 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1068 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

922 
WFUS53 KLBF 121737
TORLBF
NEC041-113-121815-
/O.NEW.KLBF.TO.W.0005.230512T1737Z-230512T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
1237 PM CDT Fri May 12 2023

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Northeastern Logan County in west central Nebraska...
  Northwestern Custer County in central Nebraska...

* Until 115 PM CDT.
    
* At 1237 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over Arnold, or 16 miles east of Stapleton,
  moving northwest at 20 mph.

  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 tornadic thunderstorm will remain over mainly rural areas of
  northeastern Logan and northwestern Custer Counties, including the
  following locations... Logan.

This includes Highway 92 between mile markers 246 and 248, and near
mile marker 256.
 
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 4150 10006 4140 10024 4172 10046 4174 10022
TIME...MOT...LOC 1737Z 156DEG 16KT 4146 10019 

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

$$

JWS

4 follow-up statements

798 
WWUS53 KLBF 121745
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1245 PM CDT Fri May 12 2023

NEC041-113-121815-
/O.CON.KLBF.TO.W.0005.000000T0000Z-230512T1815Z/
Logan NE-Custer NE-
1245 PM CDT Fri May 12 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM CDT FOR
NORTHEASTERN LOGAN AND NORTHWESTERN CUSTER COUNTIES...
    
At 1245 PM CDT, a confirmed tornado was located near Arnold, or 15
miles east of Stapleton, moving northwest at 20 mph.

HAZARD...Damaging tornado.

SOURCE...Emergency management 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...
Arnold and Logan. 

This includes Highway 92 between mile markers 246 and 248, and near
mile marker 256.
 
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 4150 10006 4140 10024 4172 10046 4174 10022
TIME...MOT...LOC 1745Z 156DEG 16KT 4149 10021 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

JWS

118 
WWUS53 KLBF 121755
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1255 PM CDT Fri May 12 2023

NEC041-113-121815-
/O.CON.KLBF.TO.W.0005.000000T0000Z-230512T1815Z/
Logan NE-Custer NE-
1255 PM CDT Fri May 12 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM CDT FOR
NORTHEASTERN LOGAN AND NORTHWESTERN CUSTER COUNTIES...
    
At 1254 PM CDT, a confirmed tornado was located 7 miles north of
Arnold, or 14 miles east of Stapleton, moving northwest at 20 mph.

HAZARD...Damaging tornado.

SOURCE...Emergency management 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...
Logan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. This tornado has touched down 
briefly numerous times. 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 4152 10013 4144 10027 4172 10046 4174 10022
TIME...MOT...LOC 1754Z 156DEG 16KT 4153 10023 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

JWS

948 
WWUS53 KLBF 121804
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
104 PM CDT Fri May 12 2023

NEC041-113-121815-
/O.CON.KLBF.TO.W.0005.000000T0000Z-230512T1815Z/
Logan NE-Custer NE-
104 PM CDT Fri May 12 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM CDT FOR
NORTHEASTERN LOGAN AND NORTHWESTERN CUSTER COUNTIES...
    
At 103 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles north of Arnold, or 14 miles northeast of
Stapleton, moving northwest at 20 mph.

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.

Locations impacted include...
Logan.

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 4152 10013 4144 10027 4172 10046 4174 10022
TIME...MOT...LOC 1803Z 155DEG 17KT 4158 10026 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

JWS

463 
WWUS53 KLBF 121816
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
116 PM CDT Fri May 12 2023

NEC041-113-121826-
/O.EXP.KLBF.TO.W.0005.000000T0000Z-230512T1815Z/
Logan NE-Custer NE-
116 PM CDT Fri May 12 2023

...THE TORNADO WARNING FOR NORTHEASTERN LOGAN AND NORTHWESTERN CUSTER
COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been allowed to expire.

A Tornado Watch remains in effect until 900 PM CDT for central and
north central Nebraska.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
North Platte.

LAT...LON 4152 10013 4144 10027 4172 10046 4174 10022
TIME...MOT...LOC 1816Z 156DEG 16KT 4163 10029 

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:32 AM CDT	Areal Flood Advisory	LBF	Chase, Frontier, Hayes, Keith, Lincoln, Perkins	3 hr
May 12, 9:07 AM CDT	Special Weather Statement	LBF	Custer	23 min
May 12, 10:19 AM CDT	Areal Flood Advisory	LBF	Arthur, Chase, Hayes, Keith, Lincoln, Perkins	12 hr
May 12, 10:34 AM CDT	River Flood Warning	LBF	Hayes	20 hr
May 12, 10:56 AM CDT	Areal Flood Advisory	LBF	Keith, Lincoln	3 hr
May 12, 11:59 AM CDT	Special Weather Statement	LBF	Custer	46 min
May 12, 12:20 PM CDT	Areal Flood Advisory	LBF	Custer	8 min
May 12, 12:28 PM CDT	Areal Flood Warning	LBF	Custer	5 hr
May 12, 12:49 PM CDT	Tornado Warning	LBF	Blaine, Custer	41 min
May 12, 1:19 PM CDT	Tornado Warning	LBF	Logan, McPherson, Thomas	41 min
May 12, 2:24 PM CDT	Tornado Warning	LBF	Cherry, Hooker	36 min
May 12, 2:30 PM CDT	Tornado Warning Tornado observed	LBF	Garfield, Wheeler	45 min
May 12, 2:33 PM CDT	Tornado Warning	LBF	Garfield, Loup	42 min
May 12, 2:48 PM CDT	Flash Flood Warning	LBF	Garfield, Loup	3 hr
May 12, 2:55 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Loup, Wheeler	50 min
May 12, 3:25 PM CDT	Tornado Warning Tornado observed	LBF	Garfield, Wheeler	50 min
May 12, 3:56 PM CDT	Tornado Warning	LBF	Custer, Logan	34 min
May 12, 4:01 PM CDT	Tornado Warning	LBF	Garfield, Holt, Wheeler	44 min
May 12, 4:43 PM CDT	Tornado Warning Tornado observed	LBF	Garfield, Holt, Wheeler	47 min
May 12, 5:06 PM CDT	Areal Flood Advisory	LBF	Custer	13 hr
May 12, 5:25 PM CDT	Tornado Warning	LBF	Holt	50 min
May 12, 5:34 PM CDT	Areal Flood Advisory	LBF	Holt	4 hr

Nearby

Tornado Warnings in Nebraska, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.