Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS Northern Indiana

June 20, 2021Cass County, Michigan; 4 counties in Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jun 20, 2021, 6:42 PM EDT for Cass County, Michigan; 4 counties in Indiana. It was in force for 26 min. 8 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 20, 2021, 6:42 PM EDT (22:42 UTC)
Expired: Jun 20, 2021, 7:08 PM EDT
In force: 26 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Elkhart County, IN, Kosciusko County, IN, Marshall County, IN, Saint Joseph County, IN, Cass County, MI

The radar

The Northern Indiana radar (KIWX), 39 km from the middle of the area, began a volume at 22:44 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 20, 6:50 PM EDT	TSTM WND DMG	Osceola, IN	CORRECTS TIME OF PREVIOUS TSTM WND DMG REPORT FROM OSCEOLA. HEALTHY 8 INCH DIAMETER TREE BRANCH BLOWN DOWN.
Jun 20, 6:55 PM EDT	TSTM WND DMG	1 Ese Osceola, IN	MULTIPLE TREES ON HOUSES AND ELECTRICAL LINES. SUSTAINED WINDS UP TO 60.
Jun 20, 6:55 PM EDT	TSTM WND DMG	2 Nnw Osceola, IN	REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.
Jun 20, 6:55 PM EDT	TSTM WND DMG	Mishawaka, IN	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM MISHAWAKA. MULTIPLE REPORTS OF POWER LINES DOWN IN MISHAWAKA AS WELL AS LIBERTY, GREENE, PENN AND CLAY TOWNSHIPS.
Jun 20, 7:00 PM EDT	TSTM WND DMG	Linkville, IN	TREE BLOWN DOWN ACROSS THE ROAD.
Jun 20, 7:05 PM EDT	TSTM WND DMG	1 Wsw Elkhart, IN	LARGE TREES DOWN BLOCKING EAST BLVD COMING FROM LEXINGTON BLOCKING TRAFFIC TO ELKHART GENERAL ER.
Jun 20, 7:12 PM EDT	TSTM WND DMG	Mishawaka, IN	MULTIPLE REPORTS OF POWER LINES DOWN IN MISHAWAKA AS WELL AS LIBERTY, GREENE, PENN AND CLAY TOWNSHIPS.
Jun 20, 7:13 PM EDT	TSTM WND DMG	2 Ne Elkhart, IN	MATURE PINE TREE AROUND 18 INCHES IN DIAMETER UPROOTED. RELAYED BY WSBT ON TWITTER.

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 20, 6:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.7 hours before the alert went out and 247 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: 46 J/kg
Mixed-layer CIN: -265 J/kg
Mixed-layer LCL: 737 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

553 
WUUS53 KIWX 202242
SVRIWX
INC039-085-099-141-MIC027-202330-
/O.NEW.KIWX.SV.W.0019.210620T2242Z-210620T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
642 PM EDT Sun Jun 20 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Elkhart County in north central Indiana...
  Eastern St. Joseph County in north central Indiana...
  Northwestern Kosciusko County in north central Indiana...
  Northeastern Marshall County in north central Indiana...
  South central Cass County in southwestern Michigan...

* Until 730 PM EDT.

* At 642 PM EDT, severe thunderstorms were located along a line
  extending from Mishawaka to near Bremen to near Plymouth, moving
  east at 30 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Trained weather spotters reported wind gusts of 55 mph in 
           Osceola at 6:40 PM EDT .

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

* Locations impacted include...
  South Bend, Elkhart, Mishawaka, Goshen, Nappanee, Bremen, Gulivoire
  Park, Simonton Lake, Dunlap, Granger, Osceola, Wakarusa, Bristol,
  Milford, Lakeville, New Paris, Locke, La Paz, Woodland and Foraker.

This includes Interstate 80 in Indiana between mile markers 81 and
101.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4178 8579 4158 8577 4139 8577 4138 8634
      4153 8635 4167 8631 4177 8604
TIME...MOT...LOC 2242Z 250DEG 26KT 4166 8619 4149 8617 4139 8623 

HAIL...0.88IN
WIND...60MPH
 
$$

Brown

3 follow-up statements

524 
WWUS53 KIWX 202256
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
656 PM EDT Sun Jun 20 2021

MIC027-202306-
/O.CAN.KIWX.SV.W.0019.000000T0000Z-210620T2330Z/
Cass MI-
656 PM EDT Sun Jun 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CASS COUNTY IS
CANCELLED...

The storms which prompted the warning have weakened. Therefore, the 
warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
north central Indiana...and southwestern Michigan.

LAT...LON 4176 8579 4158 8577 4139 8577 4139 8613
      4154 8612 4169 8612 4176 8605
TIME...MOT...LOC 2256Z 250DEG 26KT 4169 8607 4152 8605 4142 8611 

$$

INC039-085-099-141-202330-
/O.CON.KIWX.SV.W.0019.000000T0000Z-210620T2330Z/
Elkhart IN-St. Joseph IN-Kosciusko IN-Marshall IN-
656 PM EDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR ELKHART...EAST CENTRAL ST. JOSEPH...NORTHWESTERN KOSCIUSKO AND
NORTHEASTERN MARSHALL COUNTIES...

At 656 PM EDT, severe thunderstorms were located along a line
extending from Osceola to near Wakarusa to near Bremen, moving east
at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Trained weather spotters at 640 PM EDT reported 55 mph 
         winds in Osceola.

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

Locations impacted include...
Elkhart, Mishawaka, Goshen, Nappanee, Dunlap, Simonton Lake, Granger,
Osceola, Wakarusa, Bristol, Milford, New Paris, Locke, Jimtown,
Southwest, Foraker, Gravelton and Waterford Mills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4176 8579 4158 8577 4139 8577 4139 8613
      4154 8612 4169 8612 4176 8605
TIME...MOT...LOC 2256Z 250DEG 26KT 4169 8607 4152 8605 4142 8611 

HAIL...0.88IN
WIND...60MPH
 
$$

Brown

827 
WWUS53 KIWX 202302
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
702 PM EDT Sun Jun 20 2021

INC099-141-202312-
/O.CAN.KIWX.SV.W.0019.000000T0000Z-210620T2330Z/
St. Joseph IN-Marshall IN-
702 PM EDT Sun Jun 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ST. JOSEPH AND
NORTHEASTERN MARSHALL COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
north central Indiana...and southwestern Michigan.

LAT...LON 4176 8579 4158 8577 4139 8577 4139 8606
      4175 8606 4176 8605
TIME...MOT...LOC 2302Z 250DEG 26KT 4170 8603 4153 8601 4143 8607 

$$

INC039-085-202330-
/O.CON.KIWX.SV.W.0019.000000T0000Z-210620T2330Z/
Elkhart IN-Kosciusko IN-
702 PM EDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR ELKHART AND NORTHWESTERN KOSCIUSKO COUNTIES...

At 702 PM EDT, severe thunderstorms were located along a line
extending from near Elkhart to Wakarusa to near Bremen, moving east
at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Trained weather spotters have reported wind gusts of 55 to 
         60 mph in the Osceola area.

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

Locations impacted include...
Elkhart, Goshen, Nappanee, Dunlap, Simonton Lake, Wakarusa, Bristol,
Milford, New Paris, Locke, Jimtown, Southwest, Foraker, Gravelton and
Waterford Mills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4176 8579 4158 8577 4139 8577 4139 8606
      4175 8606 4176 8605
TIME...MOT...LOC 2302Z 250DEG 26KT 4170 8603 4153 8601 4143 8607 

HAIL...0.88IN
WIND...60MPH
 
$$

Brown

443 
WWUS53 KIWX 202308
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
708 PM EDT Sun Jun 20 2021

INC039-085-202317-
/O.CAN.KIWX.SV.W.0019.000000T0000Z-210620T2330Z/
Elkhart IN-Kosciusko IN-
708 PM EDT Sun Jun 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR ELKHART AND NORTHWESTERN
KOSCIUSKO COUNTIES IS CANCELLED...

The storms which prompted the warning have weakened. Therefore, the 
warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
north central Indiana...and southwestern Michigan.

Remember, a Severe Thunderstorm Warning still remains in effect for
Elkhart County until 730 PM EDT

LAT...LON 4176 8579 4158 8577 4139 8577 4139 8606
      4175 8606 4176 8605
TIME...MOT...LOC 2305Z 250DEG 26KT 4171 8600 4154 8598 4144 8604 

$$

Brown

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:20 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Saint Joseph	40 min
Jun 19, 8:51 PM EDT	Areal Flood Advisory	IWX	Cass, Saint Joseph	3 hr
Jun 19, 9:21 PM EDT	Severe Thunderstorm Warning	IWX	Branch, Hillsdale	39 min
Jun 19, 9:59 PM EDT	Severe Thunderstorm Warning	IWX	Hillsdale	17 min
Jun 20, 5:12 AM EDT	Beach Hazards Statement	IWX		49 hr
Jun 20, 6:58 PM EDT	Severe Thunderstorm Warning	IWX	Berrien, Cass	28 min
Jun 20, 7:19 PM EDT	Severe Thunderstorm Warning	IWX	Saint Joseph	41 min
Jun 20, 7:29 PM EDT	Severe Thunderstorm Warning	IWX	Hillsdale	31 min
Jun 20, 7:49 PM EDT	Severe Thunderstorm Warning	IWX	Hillsdale	26 min
Jun 20, 7:58 PM EDT	Severe Thunderstorm Warning	IWX	Branch, Saint Joseph	32 min
Jun 19, 8:16 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Saint Joseph	44 min
Jun 19, 8:53 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Marshall, Saint Joseph, Starke	52 min
Jun 19, 9:14 PM EDT	Areal Flood Advisory	IWX	LaPorte, Saint Joseph, Starke	3 hr
Jun 19, 9:43 PM EDT	Severe Thunderstorm Warning	IWX	Marshall, Starke	47 min
Jun 19, 10:30 PM EDT	Severe Thunderstorm Warning	IWX	Pulaski, Starke	60 min
Jun 20, 4:49 AM EDT	Small Craft Advisory	IWX		45 hr
Jun 20, 5:52 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Marshall, Saint Joseph, Starke	38 min
Jun 20, 5:57 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Starke	33 min
Jun 20, 6:39 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Fulton, Kosciusko, Marshall	51 min
Jun 20, 6:53 PM EDT	Severe Thunderstorm Warning	IWX	Marshall, Starke	22 min
Jun 20, 7:07 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, Marshall, Saint Joseph	23 min
Jun 20, 7:47 PM EDT	Special Marine Warning	IWX		28 min
Jun 20, 7:49 PM EDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb	10 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2021 Severe Thunderstorm Warnings in Michigan, 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.