Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 37, NWS Northern Indiana

June 21, 20217 counties in Indiana; Berrien County, Cass County, Michigan

NWS Northern Indiana issued this severe thunderstorm warning at Jun 21, 2021, 1:30 AM EDT for 7 counties in Indiana; Berrien County, Cass County, Michigan. It was in force for 45 min. 13 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, 1:30 AM EDT (05:30 UTC)
Expired
Jun 21, 2021, 2:15 AM EDT
In force
45 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
70.0 mph

Counties Elkhart County, IN, Fulton County, IN, LaPorte County, IN, Marshall County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Berrien County, MI, Cass County, MI

The radar

The Northern Indiana radar (KIWX), 66 km from the middle of the area, began a volume at 05:33 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

TimeReportWhereRemark
Jun 21, 1:33 AM EDTTSTM WND DMG1 Se Waterford, INLARGE TREE BRANCHES DOWNED. DELAYED REPORT. ESTIMATED FROM RADAR.
Jun 21, 1:35 AM EDTTSTM WND DMGLa Porte, INSEVERAL REPORTS OF TREES DOWNED ACROSS THE COUNTY.
Jun 21, 1:44 AM EDTTSTM WND GST 473 Wsw Waterford, INMESONET STATION IN002 2.7 W WATERFORD (INDOT).
Jun 21, 1:55 AM EDTTSTM WND DMG2 Ese Walkerton, INDELAYED REPORT - WIDESPREAD TREE DAMAGE - TREE LINE WEST OF PROPERTY HAS BEEN FLATTENED WITH ALMOST ALL TREES UPROOTED AND SOME SNAPPED OFF.
Jun 21, 1:55 AM EDTTSTM WND DMG3 W South Bend, INSEVERAL LIMBS DOWNED. SIZE UNKNOWN.
Jun 21, 1:55 AM EDTTSTM WND GST 393 Ssw La Porte, INAWOS STATION KPPO LA PORTE.
Jun 21, 1:57 AM EDTTSTM WND DMG2 E South Bend, INOCCURRED ON MADISON STREET IN SOUTH BEND, IN. LARGE TREE BLOCKING ROAD, TREE WENT THROUGH HUSBANDS BACK WINDSHIELD. CALLED POLICE TO REPORT DAMAGE TO AREA. ITS DARK BUT OBSERVER REPORTED THAT THERE IS A LOT DEBRIS AROUND. THEY HAVE DEBRIS IN FRONT AND BACK OF
Jun 21, 1:59 AM EDTTSTM WND DMG1 S Teegarden, INSPOTTY TREE AND POWER LINE DAMAGE ACROSS NORTHERN MARSHALL COUNTY. US 6 IS CLOSED IN SPOTS WITH DEBRIS ON THE ROAD.
Jun 21, 2:03 AM EDTTSTM WND DMG1 Ese La Paz, INLARGE TREE BRANCHES DOWNED JUST EAST OF LA PAZ, IN NEAR US 6. DELAYED REPORT. TIME ESTIMATED FROM RADAR.
Jun 21, 2:04 AM EDTTSTM WND GST 483 Wnw South Bend, INASOS STATION KSBN SOUTH BEND INTERNATIONAL AP.
Jun 21, 2:07 AM EDTTORNADO1 S Woodland, INNWS STORM SURVEY CONFIRMS EF-1 TORNADO WITH PATH LENGTH OF 1 MILE AND MAXIMUM PATH WIDTH OF 100 YARDS. DURATION OF THE TORNADO WAS 2 MINUTES.
Jun 21, 2:10 AM EDTTSTM WND DMG1 E Osceola, INSMALL TREE LIMBS BROKEN.
Jun 21, 2:15 AM EDTTSTM WND GST 392 Nne Plymouth, INMESONET STATION KC65 PLYMOUTH.

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.

IssuedProductOfficeLasted
Jun 21, 1:00 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.5 hours before the alert went out and 232 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2021-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1632 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2021-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

289 
WUUS53 KIWX 210530
SVRIWX
INC039-049-091-099-131-141-149-MIC021-027-210615-
/O.NEW.KIWX.SV.W.0037.210621T0530Z-210621T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
130 AM EDT Mon Jun 21 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Western Elkhart County in north central Indiana...
  St. Joseph County in north central Indiana...
  Pulaski County in northwestern Indiana...
  Fulton County in north central Indiana...
  Starke County in northwestern Indiana...
  Marshall County in north central Indiana...
  La Porte County in northwestern Indiana...
  Southwestern Cass County in southwestern Michigan...
  Southern Berrien County in southwestern Michigan...

* Until 215 AM EDT/115 AM CDT/.

* At 130 AM EDT/1230 AM CDT/, severe thunderstorms were located along
  a line extending from New Buffalo to near Moody, moving east at 60
  mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  South Bend, Elkhart, Mishawaka, Michigan City, La Porte, Niles,
  Plymouth, Nappanee, Rochester, Westville, Bremen, Buchanan, Knox,
  Georgetown, Winamac, Trail Creek, Granger, Simonton Lake, Gulivoire
  Park and Osceola.

This includes the following highways...
 Interstate 80 in Indiana between mile markers 38 and 93.
 Interstate 94 in Indiana between mile markers 33 and 45.
 Interstate 94 in Michigan between mile markers 0 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4165 8693 4176 8690 4183 8676 4182 8591
      4144 8603 4143 8606 4135 8606 4091 8625
      4093 8693
TIME...MOT...LOC 0530Z 274DEG 52KT 4179 8674 4102 8700 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

FISHER
2 follow-up statements
097 
WWUS53 KIWX 210555
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
155 AM EDT Mon Jun 21 2021

INC091-210605-
/O.CAN.KIWX.SV.W.0037.000000T0000Z-210621T0615Z/
La Porte IN-
155 AM EDT Mon Jun 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR LA PORTE COUNTY 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 600 AM EDT/500 AM
CDT/ for north central and northwestern Indiana...and southwestern
Michigan.

LAT...LON 4147 8650 4183 8627 4182 8591 4144 8603
      4143 8606 4135 8606 4091 8625 4093 8693
      4113 8692 4124 8663
TIME...MOT...LOC 0555Z 279DEG 38KT 4178 8621 4123 8660 4117 8673 4107
8704

$$

INC039-049-099-131-141-149-MIC021-027-210615-
/O.CON.KIWX.SV.W.0037.000000T0000Z-210621T0615Z/
Elkhart IN-St. Joseph IN-Pulaski IN-Fulton IN-Starke IN-Marshall IN-
Cass MI-Berrien MI-
155 AM EDT Mon Jun 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM
EDT/115 AM CDT/ FOR WESTERN ELKHART...ST. JOSEPH...PULASKI...
FULTON...EASTERN STARKE...MARSHALL...SOUTHWESTERN CASS AND
SOUTHEASTERN BERRIEN COUNTIES...

At 155 AM EDT/1255 AM CDT/, severe thunderstorms were located along a
line extending from near Georgetown to near Knox to near North Judson
to Gifford, moving east at 45 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
South Bend, Elkhart, Mishawaka, Niles, Plymouth, Nappanee, Rochester,
Bremen, Knox, Georgetown, Winamac, Gulivoire Park, Granger, Simonton
Lake, Osceola, Walkerton, North Liberty, Bourbon, Wakarusa and Argos.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4147 8650 4183 8627 4182 8591 4144 8603
      4143 8606 4135 8606 4091 8625 4093 8693
      4113 8692 4124 8663
TIME...MOT...LOC 0555Z 279DEG 38KT 4178 8621 4123 8660 4117 8673 4107
8704

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

FISHER
849 
WWUS53 KIWX 210615
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
215 AM EDT Mon Jun 21 2021

INC039-049-099-131-141-149-MIC021-027-210624-
/O.EXP.KIWX.SV.W.0037.000000T0000Z-210621T0615Z/
Elkhart IN-St. Joseph IN-Pulaski IN-Fulton IN-Starke IN-Marshall IN-
Cass MI-Berrien MI-
215 AM EDT Mon Jun 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ELKHART...ST.
JOSEPH...PULASKI...FULTON...EASTERN STARKE...MARSHALL...SOUTHWESTERN
CASS AND SOUTHEASTERN BERRIEN COUNTIES WILL EXPIRE AT 215 AM EDT/115
AM CDT/...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.  However small hail and gusty winds are still 
possible with these thunderstorms. Please relay any reports of 
damage to low enforcement or pass on through our Facebook and 
Twitter accounts.

A Severe Thunderstorm Watch remains in effect until 600 AM EDT/500 AM
CDT/ for north central and northwestern Indiana...and southwestern
Michigan.

LAT...LON 4147 8650 4183 8627 4182 8591 4144 8603
      4143 8606 4135 8606 4091 8625 4093 8693
      4113 8692 4124 8663
TIME...MOT...LOC 0614Z 274DEG 52KT 4176 8586 4121 8626 4115 8639 4105
8670

$$

FISHER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 11:20 PM EDTSpecial Weather StatementIWXLaGrange25 min
Jun 20, 11:39 PM EDTSevere Thunderstorm WarningIWXDeKalb, LaGrange, Noble, Steuben22 min
Jun 21, 12:02 AM EDTSpecial Weather StatementIWXLaGrange28 min
Jun 21, 12:18 AM EDTSpecial Marine WarningIWX117 min
Jun 21, 12:47 AM EDTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph43 min
Jun 21, 1:21 AM EDTTornado WarningIWXLaPorte24 min
Jun 21, 1:31 AM EDTTornado WarningIWXLaPorte, Starke29 min
Jun 21, 2:13 AM EDTSpecial Weather StatementIWXElkhart, Fulton, Kosciusko, LaGrange, Marshall, Noble47 min
Jun 21, 2:26 AM EDTSevere Thunderstorm WarningIWXElkhart, Kosciusko, LaGrange, Noble21 min
Jun 21, 2:49 AM EDTSpecial Weather StatementIWXDeKalb, Kosciusko, Noble, Steuben, Wabash, Whitley26 min
Jun 21, 3:25 AM EDTSpecial Weather StatementIWXAllen, DeKalb, Huntington, Miami, Wabash, Wells and 1 more35 min
Jun 21, 4:11 AM EDTSpecial Weather StatementIWXAdams, Blackford, Huntington, Wells34 min
Jun 21, 4:37 AM EDTSpecial Weather StatementIWXJay38 min
Jun 20, 8:11 PM EDTSevere Thunderstorm WarningIWXBranch, Saint Joseph37 min
Jun 20, 8:57 PM EDTSevere Thunderstorm WarningIWXHillsdale33 min
Jun 20, 9:38 PM EDTSevere Thunderstorm WarningIWXBranch, Hillsdale52 min
Jun 20, 9:57 PM EDTTornado Warning Tornado observedIWXBranch, Hillsdale33 min
Jun 20, 10:15 PM EDTTornado WarningIWXBranch, Hillsdale45 min
Jun 20, 10:57 PM EDTSpecial Weather StatementIWXBerrien33 min
Jun 20, 11:37 PM EDTSpecial Weather StatementIWXCass23 min
Jun 20, 11:47 PM EDTSpecial Weather StatementIWXCass28 min
Jun 21, 12:37 AM EDTSevere Thunderstorm WarningIWXBerrien38 min
Jun 21, 1:26 AM EDTTornado WarningIWXBerrien, Cass, Saint Joseph34 min
Jun 21, 1:58 AM EDTSevere Thunderstorm WarningIWXBranch, Cass, Saint Joseph34 min
Jun 21, 2:35 AM EDTSpecial Weather StatementIWXBranch, Hillsdale55 min

Nearby

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