Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 6, NWS Omaha, NE

June 24, 2021Otoe County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 24, 2021, 6:07 PM CDT for Otoe 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: Jun 24, 2021, 6:07 PM CDT (23:07 UTC)
Expired: Jun 24, 2021, 6:45 PM CDT
In force: 38 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Otoe County, NE

The radar

The Omaha radar (KOAX), 78 km from the middle of the area, began a volume at 23:10 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
Jun 24, 6:45 PM CDT	TSTM WND DMG	Nebraska City, NE	SEVERAL LARGE TREES AND NUMEROUS LARGE BRANCHES DOWN ON HOMES AND AUTOMOBILES. TIME ESTIMATED BASED ON RADAR.
Jun 24, 6:50 PM CDT	TSTM WND DMG	Nebraska City, NE	NEBRASKA CITY TREES UPROOTED ON CARS. TREES WITH LARGE BRANCHES BROKEN. LARGE AMOUNT OF SMALL DEBRIS.

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
Jun 24, 3:44 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.1 hours before the alert went out and 78 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: 23 J/kg
Mixed-layer CIN: -488 J/kg
Mixed-layer LCL: 2303 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 309 m²/s²
0-3 km storm-relative helicity: 375 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

016 
WFUS53 KOAX 242307
TOROAX
NEC131-242345-
/O.NEW.KOAX.TO.W.0006.210624T2307Z-210624T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Omaha/Valley Nebraska
607 PM CDT Thu Jun 24 2021

The National Weather Service in Omaha has issued a

* Tornado Warning for...
  Central Otoe County in southeastern Nebraska...

* Until 645 PM CDT.
    
* At 607 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Syracuse, or 28 miles east of Lincoln, moving east
  at 20 mph.

  HAZARD...Tornado and quarter 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...
  Nebraska City.

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 4061 9625 4075 9629 4079 9612 4078 9584
      4077 9584 4075 9588 4073 9589 4070 9585
      4068 9584 4065 9577 4062 9577 4060 9575
TIME...MOT...LOC 2307Z 261DEG 18KT 4067 9617 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Petersen

4 follow-up statements

294 
WWUS53 KOAX 242321
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
621 PM CDT Thu Jun 24 2021

NEC131-242345-
/O.CON.KOAX.TO.W.0006.000000T0000Z-210624T2345Z/
Otoe NE-
621 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN OTOE COUNTY...
    
At 621 PM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles east of Syracuse, or 33 miles east of Lincoln,
moving east at 20 mph.

HAZARD...Tornado and quarter 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...
Nebraska City, Dunbar, Otoe and Camp Catron. 

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 4061 9612 4078 9617 4079 9612 4078 9584
      4077 9584 4075 9588 4073 9589 4070 9585
      4068 9584 4065 9577 4062 9577 4060 9575
TIME...MOT...LOC 2321Z 261DEG 18KT 4068 9608 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Petersen

120 
WWUS53 KOAX 242332
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
632 PM CDT Thu Jun 24 2021

NEC131-242345-
/O.CON.KOAX.TO.W.0006.000000T0000Z-210624T2345Z/
Otoe NE-
632 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN OTOE COUNTY...
    
At 632 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles north of Lorton, or 36 miles east of Lincoln,
moving east at 20 mph.

HAZARD...Tornado and quarter 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...
Nebraska City, Dunbar and Camp Catron. 

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 4064 9607 4079 9612 4078 9584 4077 9584
      4075 9588 4073 9589 4070 9585 4068 9584
      4065 9577 4062 9577 4061 9576
TIME...MOT...LOC 2332Z 261DEG 18KT 4069 9601 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Petersen

625 
WWUS53 KOAX 242337
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
637 PM CDT Thu Jun 24 2021

NEC131-242345-
/O.CON.KOAX.TO.W.0006.000000T0000Z-210624T2345Z/
Otoe NE-
637 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN OTOE COUNTY...
    
At 637 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles west of Nebraska City, or 35 miles northwest of
Tarkio, moving east at 20 mph.

HAZARD...Tornado and quarter 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...
Nebraska City and Camp Catron. 

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 4063 9601 4074 9601 4078 9584 4077 9584
      4075 9588 4073 9589 4070 9585 4068 9584
      4065 9577 4062 9577 4061 9576
TIME...MOT...LOC 2337Z 261DEG 18KT 4069 9598 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Petersen

893 
WWUS53 KOAX 242345
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
645 PM CDT Thu Jun 24 2021

NEC131-242354-
/O.EXP.KOAX.TO.W.0006.000000T0000Z-210624T2345Z/
Otoe NE-
645 PM CDT Thu Jun 24 2021

...THE TORNADO WARNING FOR NORTHEASTERN OTOE COUNTY WILL EXPIRE AT
645 PM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Tornado Watch remains in effect until 1000 PM CDT for southwestern
Iowa...and southeastern Nebraska.

Remember, a Severe Thunderstorm Warning still remains in effect for
eastern Otoe and Fremont Counties.

LAT...LON 4063 9601 4074 9601 4078 9584 4077 9584
      4075 9588 4073 9589 4070 9585 4068 9584
      4065 9577 4062 9577 4061 9576
TIME...MOT...LOC 2344Z 261DEG 18KT 4070 9593 

$$

Petersen

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 11:27 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Knox, Madison, Pierce	48 min
Jun 24, 12:12 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Madison, Pierce, Stanton, Wayne	48 min
Jun 24, 12:40 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison, Platte	50 min
Jun 24, 12:58 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Colfax, Cuming, Madison, Pierce and 3 more	47 min
Jun 24, 1:11 AM CDT	Tornado Warning	OAX	Madison, Stanton	34 min
Jun 24, 1:22 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Butler, Colfax, Cuming, Dodge, Madison and 5 more	23 min
Jun 24, 1:41 AM CDT	Tornado Warning	OAX	Colfax, Cuming, Dodge, Stanton	34 min
Jun 24, 1:43 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Butler, Colfax, Cuming, Dodge, Douglas and 7 more	47 min
Jun 24, 1:55 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Lancaster, Saunders, Seward	50 min
Jun 24, 2:15 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cass, Dodge, Douglas, Sarpy, Saunders and 2 more	60 min
Jun 24, 2:24 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Gage, Jefferson, Lancaster, Otoe, Saline and 1 more	51 min
Jun 24, 2:51 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Gage, Johnson, Lancaster, Otoe, Sarpy	39 min
Jun 24, 2:54 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Gage, Johnson, Lancaster, Otoe, Sarpy	36 min
Jun 24, 3:17 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe, Pawnee, Richardson	58 min
Jun 24, 2:23 PM CDT	Flash Flood Watch	OAX	Cass, Gage, Jefferson, Johnson, Lancaster, Nemaha and 4 more	37 hr
Jun 24, 5:10 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe	40 min
Jun 24, 5:34 PM CDT	Flash Flood Warning	OAX	Cass, Lancaster, Otoe	4 hr
Jun 24, 5:35 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Saline, Seward	40 min
Jun 24, 5:43 PM CDT	Tornado Warning	OAX	Otoe	47 min
Jun 24, 5:51 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy, Saunders	54 min
Jun 24, 5:55 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	50 min
Jun 24, 6:12 PM CDT	Flash Flood Warning	OAX	Pawnee, Richardson	8 hr
Jun 24, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster, Saline, Seward	48 min
Jun 24, 6:16 PM CDT	Special Weather Statement	OAX	Douglas	89 min
Jun 24, 6:28 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	47 min
Jun 24, 6:32 PM CDT	Flash Flood Warning	OAX	Cass	3 hr
Jun 24, 6:34 PM CDT	Tornado Warning	OAX	Richardson	41 min
Jun 24, 6:43 PM CDT	Severe Thunderstorm Warning	OAX	Otoe	47 min
Jun 24, 6:48 PM CDT	Flash Flood Warning	OAX	Saline, Seward	3 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.