Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 50, NWS Northern Indiana

June 29, 20214 counties in Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jun 29, 2021, 4:10 PM EDT for 4 counties in Indiana. It was in force for 19 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: Jun 29, 2021, 4:10 PM EDT (20:10 UTC)
Expired: Jun 29, 2021, 4:29 PM EDT
In force: 19 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties DeKalb County, IN, LaGrange County, IN, Noble County, IN, Steuben County, IN

The radar

The Northern Indiana radar (KIWX), 40 km from the middle of the area, began a volume at 20:13 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 29, 4:12 PM EDT	TSTM WND DMG	3 Se Brimfield, IN	REPORT OF TREES DOWN ON 500N EAST OF THE INTERSECTION WITH 300E.
Jun 29, 4:17 PM EDT	HAIL 0.5	Rome City, IN	REPORT FROM MPING: HALF-INCH (0.50 IN.).

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.2 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: 681 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1064 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

474 
WUUS53 KIWX 292010
SVRIWX
INC033-087-113-151-292100-
/O.NEW.KIWX.SV.W.0050.210629T2010Z-210629T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
410 PM EDT Tue Jun 29 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Western Steuben County in northeastern Indiana...
  Northeastern Noble County in northeastern Indiana...
  Northwestern De Kalb County in northeastern Indiana...
  Southeastern Lagrange County in northeastern Indiana...

* Until 500 PM EDT.

* At 409 PM EDT, a severe thunderstorm was located over Rome City, or
  near Kendallville, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Kendallville around 415 PM EDT.

Other locations impacted by this severe thunderstorm include
Wolcottville, Brimfield, Stroh, Indianola, Lisbon, Fairfield Center,
Hudson, Crooked Lake, Golden Lake and Elmira.

This includes Interstate 69 in Indiana between mile markers 334 and
350.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to 
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4136 8536 4149 8543 4172 8503 4143 8503
TIME...MOT...LOC 2009Z 231DEG 25KT 4146 8534 

HAIL...<.75IN
WIND...60MPH
 
$$

JBALL

1 follow-up statement

367 
WWUS53 KIWX 292029
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
429 PM EDT Tue Jun 29 2021

INC033-087-113-151-292039-
/O.CAN.KIWX.SV.W.0050.000000T0000Z-210629T2100Z/
Steuben IN-Noble IN-De Kalb IN-Lagrange IN-
429 PM EDT Tue Jun 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN STEUBEN...NORTHEASTERN
NOBLE...NORTHWESTERN DE KALB AND SOUTHEASTERN LAGRANGE COUNTIES IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds 
to 40 mph are still possible with this thunderstorm.

LAT...LON 4136 8536 4149 8543 4172 8503 4143 8503
TIME...MOT...LOC 2027Z 231DEG 25KT 4155 8519 

$$

JBALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 10:51 PM EDT	Special Weather Statement	IWX	White	39 min
Jun 29, 2:32 PM EDT	Special Weather Statement	IWX	Pulaski	28 min
Jun 29, 3:16 PM EDT	Special Weather Statement	IWX	Kosciusko	29 min
Jun 29, 3:32 PM EDT	Special Weather Statement	IWX	Noble	43 min
Jun 29, 3:58 PM EDT	Special Weather Statement	IWX	Noble	47 min
Jun 29, 4:06 PM EDT	Special Weather Statement	IWX	Whitley	39 min
Jun 29, 4:38 PM EDT	Special Weather Statement	IWX	DeKalb	37 min
Jun 29, 4:49 PM EDT	Special Weather Statement	IWX	Steuben	41 min
Jun 29, 5:57 PM EDT	Special Weather Statement	IWX	LaPorte	48 min
Jun 29, 6:20 PM EDT	Special Weather Statement	IWX	Saint Joseph	40 min
Jun 29, 6:27 PM EDT	Severe Thunderstorm Warning	IWX	Saint Joseph	33 min
Jun 29, 6:53 PM EDT	Areal Flood Advisory	IWX	LaPorte, Saint Joseph	3 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2021 Every severe thunderstorm warning 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.