Alert archive / Indiana / Tornado Warnings in 2015

Tornado Warning 20, NWS Indianapolis, IN

December 23, 2015Daviess County, Knox County, Indiana

NWS Indianapolis, IN issued this tornado warning at Dec 23, 2015, 2:12 PM EST for Daviess County, Knox County, Indiana. It was in force for 18 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: Dec 23, 2015, 2:12 PM EST (19:12 UTC)
Expired: Dec 23, 2015, 2:30 PM EST
In force: 18 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Daviess County, IN, Knox County, IN

The radar

The Evansville,IN radar (KVWX), 41 km from the middle of the area, began a volume at 19:13 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
Dec 23, 2:26 PM EST	TSTM WND GST 60	Bicknell, IN
Dec 23, 2:35 PM EST	TSTM WND DMG	4 N Decker, IN	SEMI BLOWN OVER ON NEAR US41 NORTH OF DECKER
Dec 23, 2:39 PM EST	TSTM WND DMG	Bicknell, IN	TREE DOWN ACROSS POWER LINE BETWEEN 9TH AND 10TH ON VIGO STREET

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
Dec 23, 1:28 PM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.2 hours before the alert went out and 203 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: 12 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 465 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

119 
WFUS53 KIND 231912
TORIND
INC027-083-231930-
/O.NEW.KIND.TO.W.0020.151223T1912Z-151223T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
212 PM EST WED DEC 23 2015

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL KNOX COUNTY IN SOUTHWESTERN INDIANA...
  NORTHERN DAVIESS COUNTY IN SOUTHWESTERN INDIANA...

* UNTIL 230 PM EST

* AT 212 PM EST...SEVERE THUNDERSTORMS CAPABLE OF PRODUCING BOTH
  TORNADOES AND EXTENSIVE STRAIGHT LINE WIND DAMAGE WERE LOCATED NEAR
  VINCENNES...MOVING NORTHEAST AT 60 MPH.

  HAZARD...TORNADO. 

  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. 

* THESE DANGEROUS STORMS WILL BE NEAR...
  VINCENNES AROUND 220 PM EST.
  WASHINGTON AROUND 230 PM EST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
DECKER...PLAINVILLE...EDWARDSPORT...BICKNELL...MONROE CITY AND
WHEATLAND.

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.

THIS CLUSTER OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A BUILDING.

&&

LAT...LON 3849 8757 3857 8765 3859 8764 3859 8761
      3860 8763 3889 8721 3873 8694 3853 8734
      3854 8737 3852 8736 3851 8738 3853 8738
      3854 8740 3853 8741 3854 8743 3853 8746
      3850 8749 3850 8753 3852 8754 3849 8754
TIME...MOT...LOC 1912Z 229DEG 52KT 3858 8751 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

50

1 follow-up statement

795 
WWUS53 KIND 231930
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
230 PM EST WED DEC 23 2015

INC027-083-231939-
/O.EXP.KIND.TO.W.0020.000000T0000Z-151223T1930Z/
KNOX IN-DAVIESS IN-
230 PM EST WED DEC 23 2015

...THE TORNADO WARNING FOR CENTRAL KNOX AND NORTHERN DAVIESS COUNTIES
WILL EXPIRE AT 230 PM EST...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN
LIKELY AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR
PORTIONS OF THE AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST FOR SOUTHWESTERN
INDIANA.

LAT...LON 3849 8757 3857 8765 3859 8764 3859 8761
      3860 8763 3889 8721 3873 8694 3853 8734
      3854 8737 3852 8736 3851 8738 3853 8738
      3854 8740 3853 8741 3854 8743 3853 8746
      3850 8749 3850 8753 3852 8754 3849 8754
TIME...MOT...LOC 1928Z 229DEG 52KT 3858 8751 

$$

50

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 12:25 PM EST	Special Weather Statement	IND	Fountain, Parke, Tippecanoe, Vermillion, Vigo, Warren	20 min
Dec 23, 12:47 PM EST	Severe Thunderstorm Warning	IND	Fountain, Tippecanoe, Warren	43 min
Dec 23, 12:53 PM EST	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Tippecanoe, Vermillion	52 min
Dec 23, 1:20 PM EST	Special Weather Statement	IND	Hancock, Johnson, Marion	40 min
Dec 23, 1:44 PM EST	Severe Thunderstorm Warning	IND	Carroll	16 min
Dec 23, 1:57 PM EST	Severe Thunderstorm Warning	IND	Daviess, Greene, Knox, Sullivan	33 min
Dec 23, 2:27 PM EST	Severe Thunderstorm Warning	IND	Clay, Daviess, Greene, Knox, Martin, Owen and 1 more	33 min
Dec 23, 2:57 PM EST	Severe Thunderstorm Warning	IND	Brown, Clay, Daviess, Greene, Lawrence, Martin and 4 more	33 min
Dec 23, 3:21 PM EST	Severe Thunderstorm Warning	IND	Boone, Hamilton, Hancock, Hendricks, Marion	39 min
Dec 23, 3:25 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Jackson, Johnson, Lawrence, Monroe and 2 more	35 min
Dec 23, 3:57 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Delaware, Hamilton, Hancock, Henry and 5 more	33 min
Dec 23, 4:17 PM EST	Severe Thunderstorm Warning	IND	Delaware, Madison	43 min
Dec 23, 4:26 PM EST	Severe Thunderstorm Warning	IND	Delaware, Henry, Randolph	34 min
Dec 23, 5:33 PM EST	Severe Thunderstorm Warning	IND	Daviess, Martin	27 min

Nearby

Tornado Warnings in Indiana, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.