Alert archive / Nebraska / Tornado Warnings in 2016

Tornado Warning 21, NWS Omaha, NE

August 23, 2016Washington County, Nebraska

NWS Omaha, NE issued this tornado warning at Aug 23, 2016, 7:50 PM CDT for Washington County, Nebraska. It was in force for 25 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
Aug 23, 2016, 7:50 PM CDT (00:50 UTC)
Expired
Aug 23, 2016, 8:15 PM CDT
In force
25 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

County Washington County, NE

The radar

The Omaha radar (KOAX), 23 km from the middle of the area, began a volume at 00:52 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
Aug 23, 8:01 PM CDTTORNADO3 Sse Kennard, NEBRIEF ROPE TORNADO TOUCHDOWN. OBSERVED BY OFF DUTY NWS EMPLOYEE.

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

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.8 hours before the alert went out and 23 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 00:00Z on 2016-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2165 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2016-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 square meters per square second.193958Sfc1 km3 km6 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
2165 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1003 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
400 m²/s²
Significant tornado parameter
2.8
Supercell composite
15.4

Open this sounding in Storm Lab

The text

As transmitted.

806 
WFUS53 KOAX 240050
TOROAX
NEC177-240115-
/O.NEW.KOAX.TO.W.0021.160824T0050Z-160824T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
750 PM CDT TUE AUG 23 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA...

* UNTIL 815 PM CDT
    
* AT 750 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR KENNARD...OR 14 MILES NORTHWEST OF
  OMAHA...MOVING NORTHEAST AT 15 MPH.

  HAZARD...TORNADO AND HALF DOLLAR 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...
  KENNARD AROUND 800 PM CDT. 
  BLAIR AND FORT CALHOUN AROUND 815 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
WASHINGTON.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 30 IN NEBRASKA BETWEEN MILE MARKERS 441 AND 447.
 HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 105 AND 114.

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 4139 9615 4141 9628 4156 9614 4145 9598
TIME...MOT...LOC 0050Z 215DEG 13KT 4143 9618 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

DEWALD
2 follow-up statements
712 
WWUS53 KOAX 240059
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
759 PM CDT TUE AUG 23 2016

NEC177-240115-
/O.CON.KOAX.TO.W.0021.000000T0000Z-160824T0115Z/
WASHINGTON NE-
759 PM CDT TUE AUG 23 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN WASHINGTON COUNTY...
    
AT 758 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR KENNARD...OR 14 MILES NORTHWEST OF OMAHA...MOVING
NORTH AT 5 MPH.

HAZARD...TORNADO AND HALF DOLLAR 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...
  KENNARD AROUND 810 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
WASHINGTON.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 30 IN NEBRASKA BETWEEN MILE MARKERS 441 AND 447.
 HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 105 AND 114.

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 4139 9615 4141 9628 4156 9614 4145 9598
TIME...MOT...LOC 0058Z 200DEG 6KT 4144 9619 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

DEWALD
594 
WWUS53 KOAX 240104
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
804 PM CDT TUE AUG 23 2016

NEC177-240115-
/O.CON.KOAX.TO.W.0021.000000T0000Z-160824T0115Z/
WASHINGTON NE-
804 PM CDT TUE AUG 23 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN WASHINGTON COUNTY...
    
AT 803 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR KENNARD...OR 15
MILES NORTHWEST OF OMAHA...MOVING NORTH AT 5 MPH.

HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL. 

SOURCE...WEATHER SPOTTERS 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 TORNADO WILL BE NEAR...
  KENNARD IMMEDIATELY. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
WASHINGTON.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 30 IN NEBRASKA BETWEEN MILE MARKERS 441 AND 447.
 HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 105 AND 114.

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 4139 9615 4141 9628 4156 9614 4145 9598
TIME...MOT...LOC 0103Z 200DEG 6KT 4144 9618 

TORNADO...OBSERVED
HAIL...1.25IN

$$

DEWALD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 7:05 PM CDTSevere Thunderstorm WarningOAXButler, Seward40 min
Aug 23, 7:15 PM CDTSevere Thunderstorm WarningOAXDouglas, Washington45 min
Aug 23, 7:30 PM CDTSpecial Weather StatementOAXBurt45 min
Aug 23, 7:40 PM CDTSevere Thunderstorm WarningOAXWashington50 min
Aug 23, 8:00 PM CDTFlash Flood WarningOAXWashington6 hr
Aug 23, 8:15 PM CDTSevere Thunderstorm WarningOAXWashington45 min
Aug 23, 8:21 PM CDTSpecial Weather StatementOAXDodge39 min
Aug 23, 8:30 PM CDTSevere Thunderstorm WarningOAXDodge21 min
Aug 23, 9:01 PM CDTSevere Thunderstorm WarningOAXWashington44 min
Aug 23, 9:12 PM CDTSevere Thunderstorm WarningOAXDodge, Washington33 min
Aug 23, 9:21 PM CDTFlash Flood WarningOAXBurt, Dodge, Washington4 hr
Aug 23, 9:26 PM CDTSpecial Weather StatementOAXDouglas49 min
Aug 23, 9:45 PM CDTSpecial Weather StatementOAXDouglas, Sarpy, Washington45 min
Aug 23, 9:51 PM CDTAreal Flood AdvisoryOAXDouglas, Washington4 hr
Aug 23, 9:57 PM CDTSpecial Weather StatementOAXCuming33 min
Aug 23, 10:01 PM CDTSevere Thunderstorm WarningOAXDouglas, Sarpy, Washington29 min
Aug 23, 10:34 PM CDTSpecial Weather StatementOAXColfax26 min
Aug 23, 10:54 PM CDTAreal Flood AdvisoryOAXDouglas3 hr
Aug 23, 11:05 PM CDTAreal Flood AdvisoryOAXSarpy3 hr
Aug 23, 11:08 PM CDTSpecial Weather StatementOAXCass, Lancaster52 min
Aug 23, 11:23 PM CDTFlash Flood WarningOAXDodge, Douglas, Sarpy, Washington3 hr
Aug 23, 11:58 PM CDTFlash Flood WarningOAXCass, Lancaster, Saunders3 hr
Aug 24, 12:03 AM CDTSpecial Weather StatementOAXCass, Lancaster, Otoe42 min
Aug 24, 12:51 AM CDTSpecial Weather StatementOAXLancaster24 min
Aug 24, 2:45 AM CDTAreal Flood WarningOAXDouglas6 hr
Aug 24, 4:00 AM CDTFlash Flood WatchOAXNemaha, Pawnee, Richardson16 hr
Aug 24, 4:37 PM CDTSpecial Weather StatementOAXGage23 min
Aug 24, 4:45 PM CDTSevere Thunderstorm WarningOAXGage, Johnson, Pawnee45 min
Aug 24, 5:29 PM CDTSpecial Weather StatementOAXJohnson31 min
Aug 24, 5:45 PM CDTSpecial Weather StatementOAXNemaha30 min
Aug 24, 5:48 PM CDTSpecial Weather StatementOAXPawnee27 min
Aug 24, 6:09 PM CDTSpecial Weather StatementOAXNemaha36 min
Aug 24, 6:51 PM CDTSpecial Weather StatementOAXRichardson9 min
Aug 24, 6:58 PM CDTSevere Thunderstorm WarningOAXRichardson32 min

Nearby

Tornado Warnings in Nebraska, 2016Every tornado warning in 2016Tornadoes in 2016

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.