Alert archive / Indiana / Tornado Warnings in 2021

Tornado Warning 5, NWS Northern Indiana

June 21, 2021LaPorte County, Indiana

NWS Northern Indiana issued this tornado warning at Jun 21, 2021, 12:21 AM CDT for LaPorte County, Indiana. It was in force for 24 min. 4 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: Jun 21, 2021, 12:21 AM CDT (05:21 UTC)
Expired: Jun 21, 2021, 12:45 AM CDT
In force: 24 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County LaPorte County, IN

The radar

The Northern Indiana radar (KIWX), 94 km from the middle of the area, began a volume at 05:20 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
Jun 21, 12:33 AM CDT	TSTM WND DMG	1 Se Waterford, IN	LARGE TREE BRANCHES DOWNED. DELAYED REPORT. ESTIMATED FROM RADAR.
Jun 21, 12:35 AM CDT	TSTM WND DMG	La Porte, IN	SEVERAL REPORTS OF TREES DOWNED ACROSS THE COUNTY.
Jun 21, 12:44 AM CDT	TSTM WND GST 47	3 Wsw Waterford, IN	MESONET STATION IN002 2.7 W WATERFORD (INDOT).
Jun 21, 12:55 AM CDT	TSTM WND GST 39	3 Ssw La Porte, IN	AWOS STATION KPPO LA PORTE.

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
Jun 21, 12:00 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.4 hours before the alert went out and 225 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: 1632 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1351 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 421 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 13.7

Open this sounding in Storm Lab

The text

As transmitted.

555 
WFUS53 KIWX 210521
TORIWX
INC091-210545-
/O.NEW.KIWX.TO.W.0005.210621T0521Z-210621T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
1221 AM CDT Mon Jun 21 2021

The National Weather Service in Northern Indiana has issued a

* Tornado Warning for...
  Northern La Porte County in northwestern Indiana...

* Until 1245 AM CDT.
    
* At 1221 AM CDT, a severe thunderstorm capable of producing a
  tornado was located near Westville, moving east at 55 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...
  La Porte around 135 AM EDT.

This includes the following highways...
 Interstate 80 in Indiana between mile markers 38 and 56.
 Interstate 94 in Indiana between mile markers 33 and 36.

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 in a mobile home, a
vehicle or outdoors, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 4166 8693 4172 8655 4156 8652 4154 8693
TIME...MOT...LOC 0521Z 261DEG 46KT 4159 8696 

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

$$

MARSILI

2 follow-up statements

205 
WWUS53 KIWX 210533
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
1233 AM CDT Mon Jun 21 2021

INC091-210545-
/O.CON.KIWX.TO.W.0005.000000T0000Z-210621T0545Z/
La Porte IN-
1233 AM CDT Mon Jun 21 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR
NORTHEASTERN LA PORTE COUNTY...
    
At 1233 AM CDT, a severe thunderstorm capable of producing a tornado
was located over La Porte, moving east at 55 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 tornadic thunderstorm will remain over mainly rural areas of
  northeastern La Porte County, including the following locations...
  Byron, Pinola and Rolling Prarie.

Seek shelter until this storm passes.

LAT...LON 4166 8684 4171 8658 4157 8656 4156 8681
TIME...MOT...LOC 0533Z 261DEG 46KT 4161 8675 

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

$$

MARSILI

656 
WWUS53 KIWX 210542
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
1242 AM CDT Mon Jun 21 2021

INC091-210552-
/O.EXP.KIWX.TO.W.0005.000000T0000Z-210621T0545Z/
La Porte IN-
1242 AM CDT Mon Jun 21 2021

...THE TORNADO WARNING FOR NORTHEASTERN LA PORTE COUNTY WILL EXPIRE
AT 1245 AM CDT...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, damaging winds remain likely and a Severe 
Thunderstorm Warning remains in effect for the area.  

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
northwestern Indiana.

LAT...LON 4166 8684 4171 8658 4157 8656 4156 8681
TIME...MOT...LOC 0542Z 261DEG 46KT 4163 8661 

$$

MARSILI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 10:20 PM CDT	Special Weather Statement	IWX	LaGrange	25 min
Jun 20, 10:39 PM CDT	Severe Thunderstorm Warning	IWX	DeKalb, LaGrange, Noble, Steuben	22 min
Jun 20, 11:02 PM CDT	Special Weather Statement	IWX	LaGrange	28 min
Jun 20, 11:18 PM CDT	Special Marine Warning	IWX		117 min
Jun 20, 11:47 PM CDT	Severe Thunderstorm Warning	IWX	LaPorte, Saint Joseph	43 min
Jun 21, 12:30 AM CDT	Severe Thunderstorm Warning	IWX	Elkhart, Fulton, LaPorte, Marshall, Pulaski, Saint Joseph and 1 more	45 min
Jun 21, 12:31 AM CDT	Tornado Warning	IWX	LaPorte, Starke	29 min
Jun 21, 1:13 AM CDT	Special Weather Statement	IWX	Elkhart, Fulton, Kosciusko, LaGrange, Marshall, Noble	47 min
Jun 21, 1:26 AM CDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, LaGrange, Noble	21 min
Jun 21, 1:49 AM CDT	Special Weather Statement	IWX	DeKalb, Kosciusko, Noble, Steuben, Wabash, Whitley	26 min
Jun 21, 2:25 AM CDT	Special Weather Statement	IWX	Allen, DeKalb, Huntington, Miami, Wabash, Wells and 1 more	35 min
Jun 21, 3:11 AM CDT	Special Weather Statement	IWX	Adams, Blackford, Huntington, Wells	34 min
Jun 21, 3:37 AM CDT	Special Weather Statement	IWX	Jay	38 min

Nearby

Tornado Warnings in Indiana, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.