Alert archive / Nebraska / Tornado Warnings in 2020

Tornado Warning 1, NWS North Platte, NE

May 23, 2020Custer County, Nebraska

NWS North Platte, NE issued this tornado warning at May 23, 2020, 11:17 PM CDT for Custer County, Nebraska. It was in force for 43 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: May 23, 2020, 11:17 PM CDT (04:17 UTC)
Expired: May 24, 2020, 12:00 AM CDT
In force: 43 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.5 in

County Custer County, NE

The radar

The North Platte radar (KLNX), 89 km from the middle of the area, began a volume at 04:20 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 23, 11:50 PM CDT	HAIL 1.5	1 Se Callaway, NE
May 23, 11:50 PM CDT	HAIL 1.75	10 Ne Callaway, NE	PICTURE VIA SOCIAL MEDIA
May 23, 11:53 PM CDT	TSTM WND GST 63	7 W Broken Bow, NE	STORM CHASER MEASURED A 63MPH WIND GUST.

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
May 23, 8:29 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.3 hours before the alert went out and 61 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: 896 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted.

716 
WFUS53 KLBF 240417
TORLBF
NEC041-240500-
/O.NEW.KLBF.TO.W.0001.200524T0417Z-200524T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
1117 PM CDT Sat May 23 2020

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southwestern Custer County in central Nebraska...

* Until midnight CDT.
    
* At 1117 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Callaway, or 19 miles southwest of Broken
  Bow, moving northeast at 10 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.

* This dangerous storm will be near...
  Callaway around 1125 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Milldale.

This includes the following highways...
 Highway 2 between mile markers 273 and 275.
 Highway 92 between mile markers 261 and 270.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This Tornado Warning replaces the Severe Thunderstorm Warning issued
for the same area.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4120 9993 4127 10010 4155 9999 4142 9967
TIME...MOT...LOC 0417Z 208DEG 11KT 4129 9998 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

Jacobs

1 follow-up statement

284 
WWUS53 KLBF 240434
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1134 PM CDT Sat May 23 2020

NEC041-240500-
/O.CON.KLBF.TO.W.0001.000000T0000Z-200524T0500Z/
Custer NE-
1134 PM CDT Sat May 23 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR CENTRAL
CUSTER COUNTY...
    
At 1134 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Callaway, or 14 miles southwest of Broken Bow,
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.

This tornadic thunderstorm will remain over mainly rural areas of
central Custer County.

This includes the following highways...
 Highway 2 between mile markers 274 and 275.
 Highway 92 between mile markers 266 and 270.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4125 9991 4131 10000 4151 9990 4142 9967
TIME...MOT...LOC 0434Z 215DEG 12KT 4132 9990 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

Jacobs

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:07 PM CDT	Special Weather Statement	LBF	Sheridan	38 min
May 23, 7:46 PM CDT	Special Weather Statement	LBF	Sheridan	44 min
May 23, 8:04 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	56 min
May 23, 8:07 PM CDT	Special Weather Statement	LBF	Sheridan	38 min
May 23, 8:17 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	43 min
May 23, 8:42 PM CDT	Special Weather Statement	LBF	Sheridan	18 min
May 23, 8:55 PM CDT	Special Weather Statement	LBF	Sheridan	65 min
May 23, 8:57 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith, Perkins	63 min
May 23, 9:42 PM CDT	Special Weather Statement	LBF	Custer	48 min
May 23, 9:46 PM CDT	Special Weather Statement	LBF	Arthur, Grant	59 min
May 23, 9:50 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln	55 min
May 23, 9:59 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	45 min
May 23, 10:12 PM CDT	Special Weather Statement	LBF	Keith	48 min
May 23, 10:32 PM CDT	Special Weather Statement	LBF	Perkins	28 min
May 23, 10:34 PM CDT	Special Weather Statement	LBF	Cherry	56 min
May 23, 10:37 PM CDT	Special Weather Statement	LBF	Hooker, McPherson, Thomas	53 min
May 23, 10:37 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	53 min
May 23, 10:44 PM CDT	Severe Thunderstorm Warning	LBF	Hooker, Keith, Lincoln, McPherson, Perkins, Thomas	46 min
May 23, 11:17 PM CDT	Special Weather Statement	LBF	Blaine	13 min
May 23, 11:28 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry, Thomas	62 min
May 23, 11:30 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Logan, Loup	60 min
May 23, 11:58 PM CDT	Severe Thunderstorm Warning	LBF	Custer	47 min
May 24, 12:12 AM CDT	Severe Thunderstorm Warning	LBF	Wheeler	48 min
May 24, 12:21 AM CDT	Severe Thunderstorm Warning	LBF	Custer	39 min
May 24, 12:23 AM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Holt, Rock	37 min
May 24, 12:25 AM CDT	Areal Flood Advisory	LBF	Custer	13 hr
May 24, 12:27 AM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	33 min
May 24, 12:35 AM CDT	Special Weather Statement	LBF	Keya Paha	25 min
May 24, 12:55 AM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha, Rock	65 min
May 24, 12:57 AM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup, Wheeler	63 min
May 24, 1:17 AM CDT	Special Weather Statement	LBF	Custer	43 min
May 24, 1:56 AM CDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	34 min
May 24, 3:12 PM CDT	Flash Flood Watch	LBF	Custer	24 hr

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.