Alert archive / Indiana / Tornado Warnings in 2017

Tornado Warning 20, NWS Northern Indiana

July 10, 2017Cass County, Indiana

NWS Northern Indiana issued this tornado warning at Jul 10, 2017, 8:32 PM EDT for Cass County, Indiana. It was in force for 26 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 10, 2017, 8:32 PM EDT (00:32 UTC)
Expired: Jul 10, 2017, 8:58 PM EDT
In force: 26 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Cass County, IN

The radar

The Northern Indiana radar (KIWX), 96 km from the middle of the area, began a volume at 00:36 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 10, 4:58 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 204 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: 2755 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1493 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 14.2

Open this sounding in Storm Lab

The text

As transmitted.

832 
WFUS53 KIWX 110032
TORIWX
INC017-110115-
/O.NEW.KIWX.TO.W.0020.170711T0032Z-170711T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
832 PM EDT MON JUL 10 2017

The National Weather Service in Northern Indiana  has issued a

* Tornado Warning for...
  Southeastern Cass County in north central Indiana...

* Until 915 PM EDT
    
* At 832 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles southwest of Logansport, moving east at 20 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. 

* This dangerous storm will be near...
  Walton around 855 PM EDT. 
  Grissom Afb around 910 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Deacon, Lincoln and Galveston.

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 4060 8637 4068 8637 4068 8617 4056 8616
      4056 8617
TIME...MOT...LOC 0032Z 283DEG 18KT 4065 8642 

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

$$

JBALL

2 follow-up statements

355 
WWUS53 KIWX 110045
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
845 PM EDT MON JUL 10 2017

INC017-110115-
/O.CON.KIWX.TO.W.0020.000000T0000Z-170711T0115Z/
Cass IN-
845 PM EDT MON JUL 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
SOUTHEASTERN CASS COUNTY...
    
At 845 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Walton, or 9 miles south of Logansport, moving east
at 25 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. 

This dangerous storm will be near...
  Grissom Afb around 905 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Deacon, Lincoln and Galveston.

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 4060 8637 4065 8635 4065 8617 4056 8616
      4056 8617
TIME...MOT...LOC 0045Z 286DEG 20KT 4062 8632 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JBALL

327 
WWUS53 KIWX 110058
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
858 PM EDT MON JUL 10 2017

INC017-110108-
/O.CAN.KIWX.TO.W.0020.000000T0000Z-170711T0115Z/
Cass IN-
858 PM EDT MON JUL 10 2017

...THE TORNADO WARNING FOR SOUTHEASTERN CASS COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until midnight EDT for
north central Indiana.

LAT...LON 4060 8637 4065 8635 4065 8617 4056 8616
      4056 8617
TIME...MOT...LOC 0054Z 283DEG 18KT 4061 8624 

$$

JBALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:31 PM EDT	Tornado Warning	IWX	Wabash	44 min
Jul 10, 8:34 PM EDT	Tornado Warning	IWX	Miami	27 min
Jul 10, 8:42 PM EDT	Tornado Warning	IWX	Huntington	48 min
Jul 10, 9:06 PM EDT	Tornado Warning Tornado observedConsiderable damage threat	IWX	Huntington, Wabash	24 min
Jul 10, 9:33 PM EDT	River Flood Warning	IWX	Fulton, Kosciusko, Marshall, Pulaski, Starke	5 days
Jul 10, 9:33 PM EDT	River Flood Warning	IWX	LaPorte, Saint Joseph, Starke	3 days
Jul 10, 9:33 PM EDT	River Flood Warning	IWX	Adams, Allen	56 hr
Jul 10, 10:12 PM EDT	Areal Flood Warning	IWX	Cass, Miami	6 hr
Jul 10, 11:12 PM EDT	Special Weather Statement	IWX	Cass, Grant, Miami	48 min
Jul 10, 11:36 PM EDT	Tornado Warning	IWX	Cass	39 min
Jul 11, 12:44 AM EDT	Areal Flood Warning	IWX	Allen	6 hr
Jul 11, 1:11 AM EDT	Areal Flood Warning	IWX	Cass	3 hr
Jul 11, 1:15 AM EDT	Special Weather Statement	IWX	Miami, Wabash	30 min
Jul 11, 4:14 AM EDT	Areal Flood Warning	IWX	Cass, Miami	27 hr
Jul 11, 9:35 AM EDT	Flash Flood Watch	IWX	Adams, Blackford, Cass, Grant, Huntington, Jay and 4 more	7 hr

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.