Alert archive / Indiana / Tornado Warnings in 2017

Tornado Warning 21, NWS Northern Indiana

July 10, 2017Miami County, Indiana

NWS Northern Indiana issued this tornado warning at Jul 10, 2017, 8:34 PM EDT for Miami County, Indiana. It was in force for 27 min. 1 report 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, 8:34 PM EDT (00:34 UTC)
Expired: Jul 10, 2017, 9:01 PM EDT
In force: 27 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Miami County, IN

The radar

The Northern Indiana radar (KIWX), 90 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.

What was reported inside it

Time	Report	Where	Remark
Jul 10, 8:35 PM EDT	TORNADO	2 Nw Miami, IN	TORNADO REPORTED. DEBRIS OBSERVED.

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 00:00Z, 0.6 hours before the alert went out and 219 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.

207 
WFUS53 KIWX 110034
TORIWX
INC103-110115-
/O.NEW.KIWX.TO.W.0021.170711T0034Z-170711T0115Z/

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

The National Weather Service in Northern Indiana  has issued a

* Tornado Warning for...
  Southern Miami County in north central Indiana...

* Until 915 PM EDT

* At 833 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Grissom Afb, moving east at 20 mph.

  HAZARD...Tornado. 

  SOURCE...Weather spotters reported funnel cloud. 

  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
  southern Miami County, including the following locations:
  Wawpecong, Bennetts Switch, Amboy and Miami.

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 4061 8617 4064 8616 4064 8592 4057 8591
      4056 8616
TIME...MOT...LOC 0033Z 283DEG 18KT 4061 8619 

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

$$

JBALL

2 follow-up statements

789 
WWUS53 KIWX 110041
SVSIWX

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

INC103-110115-
/O.CON.KIWX.TO.W.0021.000000T0000Z-170711T0115Z/
Miami IN-
841 PM EDT MON JUL 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR SOUTHERN
MIAMI COUNTY...
    
At 841 PM EDT, a confirmed tornado was located near Bunker Hill, or
near Grissom Afb, moving east at 35 mph.

HAZARD...Damaging tornado. 

SOURCE...Weather spotters confirmed tornado. 

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. 

Locations impacted include...
Miami, Amboy, Wawpecong and Bennetts Switch. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4061 8617 4064 8616 4064 8592 4057 8591
      4056 8616
TIME...MOT...LOC 0041Z 273DEG 29KT 4061 8607 

TORNADO...OBSERVED
HAIL...<.75IN

$$

SLL

954 
WWUS53 KIWX 110101
SVSIWX

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

INC103-110111-
/O.CAN.KIWX.TO.W.0021.000000T0000Z-170711T0115Z/
Miami IN-
901 PM EDT MON JUL 10 2017

...THE TORNADO WARNING FOR SOUTHERN MIAMI COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

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

LAT...LON 4061 8617 4064 8616 4064 8592 4057 8591
      4056 8616
TIME...MOT...LOC 0100Z 283DEG 18KT 4059 8594 

$$

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, 8:32 PM EDT	Tornado Warning	IWX	Cass	26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.