Alert archive / Nebraska / Tornado Warnings in 2013

Tornado Warning 12, NWS Sioux Falls, SD

October 4, 2013Dixon County, Nebraska

NWS Sioux Falls, SD issued this tornado warning at Oct 4, 2013, 5:20 PM CDT for Dixon County, Nebraska. It was in force for 40 min. 5 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, 5:20 PM CDT (22:20 UTC)
Expired: Oct 4, 2013, 6:00 PM CDT
In force: 40 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Observed
Hail: 1.75 in

County Dixon County, NE

The radar

The Omaha radar (KOAX), 123 km from the middle of the area, began a volume at 22:23 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, 5:35 PM CDT	TORNADO	5 W Wakefield, NE	LARGE TREE LIMBS DOWN
Oct 4, 5:37 PM CDT	TORNADO	4 W Wakefield, NE	OUTBUILDING DESTROYED.
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, 10.3 hours before the alert went out and 123 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.

574 
WFUS53 KFSD 042220
TORFSD
NEC051-042300-
/O.NEW.KFSD.TO.W.0012.131004T2220Z-131004T2300Z/

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

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 600 PM CDT

* AT 517 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO
  WAS LOCATED NEAR WAYNE...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...
  CONCORD AROUND 545 PM CDT.
  ALLEN AROUND 600 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4227 9703 4252 9703 4254 9701 4238 9672
      4230 9673 4226 9676 4226 9701
TIME...MOT...LOC 2220Z 220DEG 25KT 4220 9705

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

$$

CHAPMAN

2 follow-up statements

281 
WWUS53 KFSD 042227
SVSFSD

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

NEC051-042300-
/O.CON.KFSD.TO.W.0012.000000T0000Z-131004T2300Z/
DIXON NE-
527 PM CDT FRI OCT 4 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN DIXON COUNTY
UNTIL 600 PM CDT...

AT 524 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS
LOCATED JUST SOUTHEAST OF WAYNE...AND MOVING NORTHEAST AT 25 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...
  WAKEFIELD AROUND 545 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4227 9703 4252 9703 4254 9701 4238 9672
      4230 9673 4226 9676 4226 9701
TIME...MOT...LOC 2227Z 231DEG 21KT 4221 9701

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

$$
CHAPMAN

728 
WWUS53 KFSD 042241
SVSFSD

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

NEC051-042300-
/O.CON.KFSD.TO.W.0012.000000T0000Z-131004T2300Z/
DIXON NE-
541 PM CDT FRI OCT 4 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN DIXON COUNTY
UNTIL 600 PM CDT...

AT 538 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS
LOCATED NEAR WAKEFIELD...AND MOVING NORTHEAST AT 40 MPH. A SECOND 
CIRCULATION WAS LOCATED 5 MILES WEST OF WAKEFIELD...MOVING NORTHEAST 
AT 25 MPH

THIS IS A PARTICULARLY DANGEROUS SITUATION.

HAZARD...DAMAGING TORNADO.

SOURCE...RADAR 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 AFFECT MAINLY RURAL AREAS OF SOUTHERN DIXON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES AND SIGNIFICANT 
DAMAGE IN THE WAYNE AREA. TAKE COVER IN A BASEMENT OR STORM SHELTER 
NOW!

&&

LAT...LON 4227 9703 4252 9703 4254 9701 4238 9672
      4230 9673 4226 9676 4226 9701
TIME...MOT...LOC 2240Z 234DEG 36KT 4229 9684

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, 5:48 PM CDT	Tornado Warning Tornado observed	FSD	Dakota, Dixon	42 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.