Alert archive / Indiana / Tornado Warnings in 2017

Tornado Warning 26, NWS Northern Indiana

July 12, 2017White County, Indiana

NWS Northern Indiana issued this tornado warning at Jul 12, 2017, 2:03 PM EDT for White County, Indiana. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 12, 2017, 2:03 PM EDT (18:03 UTC)
Expired: Jul 12, 2017, 2:20 PM EDT
In force: 17 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County White County, IN

The radar

The Northern Indiana radar (KIWX), 111 km from the middle of the area, began a volume at 18:09 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.1 hours before the alert went out and 171 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: 1083 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

687 
WFUS53 KIWX 121803
TORIWX
INC181-121830-
/O.NEW.KIWX.TO.W.0026.170712T1803Z-170712T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
203 PM EDT WED JUL 12 2017

The National Weather Service in Northern Indiana  has issued a

* Tornado Warning for...
  East central White County in northwestern Indiana...

* Until 230 PM EDT
    
* At 203 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Monticello, moving southeast at 50 mph.

  HAZARD...Tornado and quarter 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 tornadic thunderstorm will remain over mainly rural areas of
  east central White County, including the following locations:
  Golden Hill, Burnettsville, Cedar Point and Idaville.

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 4084 8665 4079 8658 4074 8658 4074 8675
      4073 8676 4072 8675 4071 8676 4069 8675
      4068 8676 4068 8675 4067 8677 4066 8678
      4072 8684
TIME...MOT...LOC 1803Z 320DEG 45KT 4077 8673 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FISHER

1 follow-up statement

034 
WWUS53 KIWX 121820
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
220 PM EDT WED JUL 12 2017

INC181-121829-
/O.CAN.KIWX.TO.W.0026.000000T0000Z-170712T1830Z/
White IN-
220 PM EDT WED JUL 12 2017

...THE TORNADO WARNING FOR EAST CENTRAL WHITE COUNTY IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

LAT...LON 4084 8665 4079 8658 4074 8658 4074 8675
      4073 8676 4072 8675 4071 8676 4069 8675
      4068 8676 4068 8675 4067 8677 4066 8678
      4072 8684
TIME...MOT...LOC 1817Z 320DEG 45KT 4061 8655 

$$

FISHER

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 12, 12:38 AM EDT	Special Marine Warning	IWX		67 min
Jul 12, 9:23 AM EDT	Special Marine Warning	IWX		82 min
Jul 12, 10:43 AM EDT	Special Marine Warning	IWX		92 min
Jul 12, 11:25 AM EDT	Flood Watch	IWX	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 15 more	17 hr
Jul 12, 11:51 AM EDT	Special Weather Statement	IWX	LaPorte, Saint Joseph	39 min
Jul 12, 1:33 PM EDT	Special Weather Statement	IWX	White	27 min
Jul 12, 1:52 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Pulaski, White	38 min
Jul 12, 2:33 PM EDT	Special Weather Statement	IWX	Cass	27 min
Jul 12, 2:38 PM EDT	Special Weather Statement	IWX	White	22 min
Jul 12, 2:59 PM EDT	Special Weather Statement	IWX	White	16 min

Nearby

Tornado Warnings in Indiana, 2017 Every tornado warning in 2017 Tornadoes in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.