Alert archive / Indiana / Tornado Warnings in 2017

Tornado Warning 17, NWS Northern Indiana

July 10, 2017Cass County, Indiana

NWS Northern Indiana issued this tornado warning at Jul 10, 2017, 7:48 PM EDT for Cass County, Indiana. It was in force for 42 min. 2 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: Jul 10, 2017, 7:48 PM EDT (23:48 UTC)
Expired: Jul 10, 2017, 8:30 PM EDT
In force: 42 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Cass County, IN

The radar

The Northern Indiana radar (KIWX), 96 km from the middle of the area, began a volume at 23:47 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
Jul 10, 7:58 PM EDT	TORNADO	2 Ene Deacon, IN	STRUCTURAL DAMAGE NEAR 850 SOUTH (SPECIFICS UNAVAILABLE). ALSO REPORTS ON 500 E. REPORTS OF DOWNED POWER LINES IN THE AREA. TIME ESTIMATED BY RADAR.
Jul 10, 8:05 PM EDT	TORNADO	2 Sw Deacon, IN	TORNADO ON THE GROUND.

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
Jul 10, 4:58 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.8 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: 1522 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 1184 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

901 
WFUS53 KIWX 102348
TORIWX
INC017-110030-
/O.NEW.KIWX.TO.W.0017.170710T2348Z-170711T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
748 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 830 PM EDT

* At 747 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles south of Logansport, moving east at 20 mph.

  HAZARD...Tornado. 

  SOURCE...Weather spotters reported funnel cloud over northeast 
           Carroll county at 745 pm EDT. 

  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 810 PM EDT. 
  Grissom Afb around 820 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 4057 8637 4068 8637 4067 8617 4063 8616
      4056 8617
TIME...MOT...LOC 2347Z 284DEG 19KT 4064 8641 

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

$$

JBALL

3 follow-up statements

789 
WWUS53 KIWX 110001
SVSIWX

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

INC017-110030-
/O.CON.KIWX.TO.W.0017.000000T0000Z-170711T0030Z/
Cass IN-
801 PM EDT MON JUL 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR
SOUTHEASTERN CASS COUNTY...
        
At 801 PM EDT, a confirmed large and extremely dangerous tornado was
located near Walton, or 7 miles south of Logansport, moving east at
20 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado. 

SOURCE...Radar confirmed tornado. 

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible. 

The tornado will be near...
  Walton around 820 PM EDT. 
  Grissom Afb around 830 PM EDT. 

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A large and extremely dangerous tornado is on the ground. Take 
immediate tornado precautions. this is an emergency situation.

&&

LAT...LON 4057 8637 4068 8637 4067 8617 4063 8616
      4056 8617
TIME...MOT...LOC 0001Z 279DEG 15KT 4064 8635 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...0.00IN

$$

JBALL

191 
WWUS53 KIWX 110015
SVSIWX

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

INC017-110030-
/O.CON.KIWX.TO.W.0017.000000T0000Z-170711T0030Z/
Cass IN-
815 PM EDT MON JUL 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR
SOUTHEASTERN CASS COUNTY...
    
At 815 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Walton, or near Grissom Afb, 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...
  Grissom Afb around 825 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4060 8633 4066 8628 4067 8617 4063 8616
      4056 8617
TIME...MOT...LOC 0015Z 284DEG 19KT 4062 8625 

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

$$

JBALL

812 
WWUS53 KIWX 110025
SVSIWX

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

INC017-110035-
/O.EXP.KIWX.TO.W.0017.000000T0000Z-170711T0030Z/
Cass IN-
825 PM EDT MON JUL 10 2017

...THE TORNADO WARNING FOR SOUTHEASTERN CASS COUNTY WILL EXPIRE AT
830 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Northern Indiana .

LAT...LON 4060 8633 4066 8628 4067 8617 4063 8616
      4056 8617
TIME...MOT...LOC 0025Z 284DEG 19KT 4061 8620 

$$

JBALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 9:23 PM EDT	River Flood Watch	IWX	Fulton, Marshall, Pulaski, Starke	5 days
Jul 10, 12:53 AM EDT	Special Weather Statement	IWX	Miami	37 min
Jul 10, 1:51 AM EDT	Special Weather Statement	IWX	Wells	24 min
Jul 10, 2:22 AM EDT	Special Weather Statement	IWX	Whitley	23 min
Jul 10, 2:55 AM EDT	Special Weather Statement	IWX	Huntington	35 min
Jul 10, 3:11 AM EDT	Severe Thunderstorm Warning	IWX	Allen, Huntington, Wells	49 min
Jul 10, 4:13 AM EDT	Special Weather Statement	IWX	Allen	32 min
Jul 10, 4:46 AM EDT	Special Weather Statement	IWX	Adams	29 min
Jul 10, 8:51 AM EDT	Special Weather Statement	IWX	Noble	39 min
Jul 10, 9:00 AM EDT	Special Weather Statement	IWX	Fulton, Kosciusko, Marshall	45 min
Jul 10, 9:09 AM EDT	Special Weather Statement	IWX	Huntington	36 min
Jul 10, 9:15 AM EDT	Special Marine Warning	IWX		90 min
Jul 10, 9:20 AM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Fulton, Kosciusko, Marshall, Saint Joseph, Whitley	40 min
Jul 10, 9:47 AM EDT	Special Weather Statement	IWX	LaGrange, Noble	58 min
Jul 10, 9:54 AM EDT	Areal Flood Advisory	IWX	DeKalb, Elkhart, Kosciusko, LaGrange, Noble, Steuben	111 min
Jul 10, 10:09 AM EDT	Areal Flood Advisory	IWX	Adams, Allen, Huntington, Wells	111 min
Jul 10, 10:53 AM EDT	River Flood Warning	IWX	Cass, Kosciusko, Miami, Wabash, Whitley	3 days
Jul 10, 2:49 PM EDT	Flash Flood Watch	IWX	Adams, Allen, Blackford, Cass, Fulton, Grant and 10 more	11 hr
Jul 10, 5:02 PM EDT	Special Weather Statement	IWX	Fulton	43 min
Jul 10, 6:52 PM EDT	Special Weather Statement	IWX	White	53 min
Jul 10, 7:40 PM EDT	Special Weather Statement	IWX	Cass	50 min
Jul 10, 7:55 PM EDT	Tornado Warning	IWX	Miami, Wabash	50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.