Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 5, NWS Omaha, NE

June 24, 2021Otoe County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 24, 2021, 5:43 PM CDT for Otoe County, Nebraska. It was in force for 47 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: Jun 24, 2021, 5:43 PM CDT (22:43 UTC)
Expired: Jun 24, 2021, 6:30 PM CDT
In force: 47 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), 71 km from the middle of the area, began a volume at 22:45 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
Jun 24, 3:44 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.7 hours before the alert went out and 71 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.

277 
WFUS53 KOAX 242243
TOROAX
NEC131-242330-
/O.NEW.KOAX.TO.W.0005.210624T2243Z-210624T2330Z/

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

The National Weather Service in Omaha has issued a

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

* Until 630 PM CDT.
    
* At 543 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Unadilla, or 22 miles southeast of Lincoln, moving
  east at 5 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...
  Unadilla and Syracuse.

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 9637 4071 9639 4079 9621 4078 9617
      4061 9608
TIME...MOT...LOC 2243Z 252DEG 6KT 4066 9632 

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

$$

Petersen

3 follow-up statements

932 
WWUS53 KOAX 242257
SVSOAX

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

NEC131-242330-
/O.CON.KOAX.TO.W.0005.000000T0000Z-210624T2330Z/
Otoe NE-
557 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN OTOE COUNTY...
    
At 556 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Unadilla, or 23 miles southeast of Lincoln, moving
east at 15 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...
Syracuse and Unadilla. 

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 4062 9632 4073 9634 4079 9621 4078 9617
      4061 9608
TIME...MOT...LOC 2256Z 248DEG 12KT 4067 9627 

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

$$

Petersen

522 
WWUS53 KOAX 242302
SVSOAX

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

NEC131-242330-
/O.CON.KOAX.TO.W.0005.000000T0000Z-210624T2330Z/
Otoe NE-
602 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN OTOE COUNTY...
    
At 602 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Unadilla, or 25 miles east of Lincoln, moving east
at 15 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...
Syracuse and Unadilla. 

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 9628 4074 9632 4079 9621 4078 9617
      4061 9608
TIME...MOT...LOC 2302Z 250DEG 14KT 4068 9624 

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

$$

Petersen

018 
WWUS53 KOAX 242323
SVSOAX

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

NEC131-242332-
/O.EXP.KOAX.TO.W.0005.000000T0000Z-210624T2330Z/
Otoe NE-
623 PM CDT Thu Jun 24 2021

...THE TORNADO WARNING FOR NORTHWESTERN OTOE COUNTY WILL EXPIRE AT
630 PM CDT...
        
The Tornado Warning has been replaced by a new Tornado Warning. 

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

Remember, a Tornado Warning still remains in effect for Eastern Otoe 
County until 645 PM.

LAT...LON 4063 9628 4074 9632 4079 9621 4078 9617
      4061 9608
TIME...MOT...LOC 2322Z 252DEG 6KT 4069 9620 

$$

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, 5:51 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, 6:07 PM CDT	Tornado Warning	OAX	Otoe	38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.