Alert archive / Nebraska / Tornado Warnings in 2013

Tornado Warning 13, NWS Sioux Falls, SD

October 4, 2013Dakota County, Dixon County, Nebraska

NWS Sioux Falls, SD issued this tornado warning at Oct 4, 2013, 5:48 PM CDT for Dakota County, Dixon County, Nebraska. It was in force for 42 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: Oct 4, 2013, 5:48 PM CDT (22:48 UTC)
Expired: Oct 4, 2013, 6:30 PM CDT
In force: 42 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Observed
Hail: 1.75 in

Counties Dakota County, NE, Dixon County, NE

The radar

The Omaha radar (KOAX), 120 km from the middle of the area, began a volume at 22:51 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
Oct 4, 5:56 PM CDT	FUNNEL CLOUD	5 Se Concord, NE
Oct 4, 5:59 PM CDT	TORNADO	3 Ssw Allen, NE	BRIEF TORNADO OBSERVED ON VIDEO.
Oct 4, 5:59 PM CDT	TORNADO	5 Nnw Emerson, NE	MULTI-VORTEX TORNADO TRACKING NORTH

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
Oct 4, 2:38 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.8 hours before the alert went out and 120 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: 97 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 898 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

100 
WFUS53 KFSD 042248
TORFSD
NEC043-051-042330-
/O.NEW.KFSD.TO.W.0013.131004T2248Z-131004T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
548 PM CDT FRI OCT 4 2013

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  DAKOTA COUNTY IN NORTHEAST NEBRASKA...
  SOUTHERN DIXON COUNTY IN NORTHEAST NEBRASKA...

* UNTIL 630 PM CDT

* AT 546 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO
  WAS LOCATED NEAR EMERSON...AND MOVING NORTHEAST AT 30 MPH.

  THIS IS A PARTICULARLY DANGEROUS SITUATION.

  HAZARD...DAMAGING TORNADO.

  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

  IMPACT...YOU ARE IN A LIFE THREATENING SITUATION. MOBILE HOMES WILL
           BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES...BUSINESSES
           AND VEHICLES IS LIKELY AND COMPLETE DESTRUCTION POSSIBLE.
           FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS. EXPECT
           TREES TO BE UPROOTED OR SNAPPED.

* THE TORNADO WILL BE NEAR...
  HUBBARD AROUND 610 PM CDT.
  JACKSON AROUND 615 PM CDT
  DAKOTA CITY AROUND 630 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

&&

LAT...LON 4239 9698 4251 9662 4250 9659 4252 9657
      4252 9654 4241 9641 4235 9642 4231 9637
      4227 9653 4227 9672 4226 9673 4226 9691
TIME...MOT...LOC 2247Z 247DEG 24KT 4230 9678

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.75IN

$$

CHAPMAN

2 follow-up statements

837 
WWUS53 KFSD 042300
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
600 PM CDT FRI OCT 4 2013

NEC043-051-042330-
/O.CON.KFSD.TO.W.0013.000000T0000Z-131004T2330Z/
DAKOTA NE-DIXON NE-
600 PM CDT FRI OCT 4 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL DIXON AND DAKOTA
COUNTIES UNTIL 630 PM CDT...

AT 558 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A LARGE
AND EXTREMELY DANGEROUS TORNADO WAS LOCATED 6 MILES WEST OF
HUBBARD...AND MOVING NORTHEAST AT 30 MPH.

THIS IS A PARTICULARLY DANGEROUS SITUATION.

HAZARD...DAMAGING TORNADO.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...YOU ARE IN A LIFE THREATENING SITUATION. MOBILE HOMES WILL
         BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES...BUSINESSES AND
         VEHICLES IS LIKELY AND COMPLETE DESTRUCTION POSSIBLE. FLYING
         DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS. EXPECT TREES TO
         BE UPROOTED OR SNAPPED.

THE TORNADO WILL BE NEAR...
  HUBBARD AROUND 610 PM CDT.
  JACKSON AROUND 615 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

LARGE HAIL UP TO GOLF BALL SIZE WILL FALL IN LOCATIONS NEAR 
WATERBURY.

&&

LAT...LON 4240 9691 4251 9662 4250 9659 4252 9657
      4252 9654 4241 9641 4239 9644 4230 9669
      4230 9683
TIME...MOT...LOC 2300Z 236DEG 27KT 4239 9669

TORNADO...RADAR INDICATED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.75IN

$$

CHAPMAN

396 
WWUS53 KFSD 042302
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
602 PM CDT FRI OCT 4 2013

NEC043-051-042330-
/O.CON.KFSD.TO.W.0013.000000T0000Z-131004T2330Z/
DAKOTA NE-DIXON NE-
602 PM CDT FRI OCT 4 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL DIXON AND DAKOTA
COUNTIES UNTIL 630 PM CDT...

AT 558 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS MULTI 
VORTEX TORNADO WAS LOCATED 6 MILES WEST OF HUBBARD...AND MOVING 
NORTHEAST AT 30 MPH.

THIS IS A PARTICULARLY DANGEROUS SITUATION.

HAZARD...DAMAGING TORNADO.

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

IMPACT...YOU ARE IN A LIFE THREATENING SITUATION. MOBILE HOMES WILL
         BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES...BUSINESSES AND
         VEHICLES IS LIKELY AND COMPLETE DESTRUCTION POSSIBLE. FLYING
         DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS. EXPECT TREES TO
         BE UPROOTED OR SNAPPED.

THE TORNADO WILL BE NEAR...
  HUBBARD AROUND 610 PM CDT.
  JACKSON AROUND 615 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

LARGE HAIL TO AROUND GOLF BALL SIZE WILL FALL NEAR WATERBURY THROUGH 
615 PM CDT.

&&

LAT...LON 4240 9691 4251 9662 4250 9659 4252 9657
      4252 9654 4241 9641 4239 9644 4230 9669
      4230 9683
TIME...MOT...LOC 2302Z 236DEG 27KT 4240 9668

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.75IN

$$

CHAPMAN

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 4, 5:20 PM CDT	Tornado Warning Tornado observed	FSD	Dixon	40 min
Oct 4, 6:11 PM CDT	Tornado Warning Tornado observed	FSD	Dakota, Dixon	49 min
Oct 4, 6:16 PM CDT	Tornado Warning	FSD	Dixon	29 min

Nearby

Tornado Warnings in Nebraska, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.