Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 19, NWS Omaha, NE

December 15, 2021Dodge County, Douglas County, Washington County, Nebraska

NWS Omaha, NE issued this tornado warning at Dec 15, 2021, 3:54 PM CST for Dodge County, Douglas County, Washington County, Nebraska. It was in force for 28 min. 1 report 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
Dec 15, 2021, 3:54 PM CST (21:54 UTC)
Expired
Dec 15, 2021, 4:22 PM CST
In force
28 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Tornado
Observed
Hail
0.75 in

Counties Dodge County, NE, Douglas County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 32 km from the middle of the area, began a volume at 21:55 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

TimeReportWhereRemark
Dec 15, 4:10 PM CSTTSTM WND GST 70Arlington, NE

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.

IssuedProductOfficeLasted
Dec 15, 1:23 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.9 hours before the alert went out and 32 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2021-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2021-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 346 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2165 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
346 m²/s²
0-3 km storm-relative helicity
384 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

590 
WFUS53 KOAX 152154
TOROAX
NEC053-055-177-152245-
/O.NEW.KOAX.TO.W.0019.211215T2154Z-211215T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Omaha/Valley Nebraska
354 PM CST Wed Dec 15 2021

The National Weather Service in Omaha has issued a

* Tornado Warning for...
  Washington County in east central Nebraska...
  Southeastern Dodge County in east central Nebraska...
  Northwestern Douglas County in east central Nebraska...

* Until 445 PM CST.
    
* At 353 PM CST, a tornado producing storm was located over Yutan, or
  20 miles west of Omaha, moving northeast at 75 mph.

  HAZARD...Damaging tornado.

  SOURCE...Radar 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.

* This tornadic storm will be near...
  Elkhorn around 400 PM CST.
  Arlington around 405 PM CST.
  Kennard around 410 PM CST.

Other locations in the path of this tornadic thunderstorm include
Blair and Fort Calhoun.

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 4149 9602 4148 9601 4128 9621 4138 9643
      4168 9632 4168 9619 4165 9610 4161 9612
      4158 9608 4154 9609 4151 9604 4155 9601
      4153 9600 4151 9600
TIME...MOT...LOC 2153Z 215DEG 66KT 4123 9641 

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

$$

CA
1 follow-up statement
281 
WWUS53 KOAX 152222
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
422 PM CST Wed Dec 15 2021

NEC053-055-177-152231-
/O.CAN.KOAX.TO.W.0019.000000T0000Z-211215T2245Z/
Washington NE-Dodge NE-Douglas NE-
422 PM CST Wed Dec 15 2021

...THE TORNADO WARNING FOR WASHINGTON...SOUTHEASTERN DODGE AND
NORTHWESTERN DOUGLAS COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and east central Nebraska.

LAT...LON 4149 9602 4148 9601 4128 9621 4138 9643
      4168 9632 4168 9619 4165 9610 4161 9612
      4158 9608 4154 9609 4151 9604 4155 9601
      4153 9600 4151 9600
TIME...MOT...LOC 2220Z 215DEG 66KT 4166 9600 

$$

CA

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 15, 2:19 PM CSTSevere Thunderstorm Warning Destructive damage threatOAXAntelope, Boone, Butler, Colfax, Madison, Pierce and 2 more56 min
Dec 15, 2:26 PM CSTSevere Thunderstorm Warning Considerable damage threatOAXButler, Gage, Jefferson, Lancaster, Saline, Saunders and 1 more64 min
Dec 15, 2:39 PM CSTTornado WarningOAXBoone, Madison, Platte, Stanton24 min
Dec 15, 2:50 PM CSTTornado WarningOAXColfax, Platte40 min
Dec 15, 2:54 PM CSTSevere Thunderstorm Warning Destructive damage threatOAXCass, Dodge, Douglas, Gage, Johnson, Lancaster and 5 more81 min
Dec 15, 2:59 PM CSTTornado WarningOAXButler, Colfax, Dodge, Platte31 min
Dec 15, 3:06 PM CSTTornado WarningOAXMadison, Platte, Stanton24 min
Dec 15, 3:09 PM CSTSevere Thunderstorm Warning Destructive damage threatOAXBurt, Butler, Colfax, Cuming, Dodge, Saunders and 4 more51 min
Dec 15, 3:13 PM CSTSevere Thunderstorm Warning Considerable damage threatOAXAntelope, Cedar, Colfax, Knox, Madison, Pierce and 3 more62 min
Dec 15, 3:23 PM CSTTornado WarningOAXLancaster, Seward16 min
Dec 15, 3:25 PM CSTTornado WarningOAXColfax, Cuming, Stanton35 min
Dec 15, 3:29 PM CSTTornado WarningOAXMadison, Stanton, Wayne31 min
Dec 15, 3:35 PM CSTSevere Thunderstorm Warning Destructive damage threatOAXCass, Douglas, Johnson, Nemaha, Otoe, Pawnee and 3 more70 min
Dec 15, 3:41 PM CSTSevere Thunderstorm Warning Destructive damage threatOAXBurt, Cuming, Thurston, Washington64 min
Dec 15, 3:45 PM CSTTornado WarningOAXDouglas, Saunders30 min
Dec 15, 3:45 PM CSTTornado Warning Tornado observedOAXCuming, Thurston45 min
Dec 15, 4:01 PM CSTTornado WarningOAXCass, Otoe14 min
Dec 15, 4:11 PM CSTTornado WarningOAXNemaha, Pawnee, Richardson34 min
Dec 15, 4:12 PM CSTTornado WarningOAXCass33 min
Dec 15, 4:16 PM CSTTornado WarningOAXWashington17 min
Dec 15, 5:08 PM CSTBlowing Dust AdvisoryOAXCass, Gage, Jefferson, Johnson, Lancaster, Nemaha and 5 more4 hr

Nearby

Tornado Warnings in Nebraska, 2021Every tornado warning in 2021Tornadoes 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.