Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 112, NWS Northern Indiana

October 11, 20216 counties in Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Oct 11, 2021, 5:52 PM EDT for 6 counties in Indiana. It was in force for 38 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: Oct 11, 2021, 5:52 PM EDT (21:52 UTC)
Expired: Oct 11, 2021, 6:30 PM EDT
In force: 38 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Cass County, IN, Fulton County, IN, Miami County, IN, Pulaski County, IN, Starke County, IN, White County, IN

The radar

The Northern Indiana radar (KIWX), 86 km from the middle of the area, began a volume at 21:55 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
Oct 11, 5:54 PM EDT	TSTM WND GST 64	2 Wsw Lake Cicott, IN

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 197 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: 287 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

924 
WUUS53 KIWX 112152
SVRIWX
INC017-049-103-131-149-181-112230-
/O.NEW.KIWX.SV.W.0112.211011T2152Z-211011T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
552 PM EDT Mon Oct 11 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Eastern White County in northwestern Indiana...
  Eastern Pulaski County in northwestern Indiana...
  Fulton County in north central Indiana...
  Cass County in north central Indiana...
  Northwestern Miami County in north central Indiana...
  South central Starke County in northwestern Indiana...

* Until 630 PM EDT/530 PM CDT/.

* At 552 PM EDT/452 PM CDT/, severe thunderstorms were located along
  a line extending from near Monticello to near Delphi to 11 miles
  northeast of Frankfort, moving north at 65 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...
  Logansport, Rochester, Monticello, Winamac, Akron, Walton, Royal
  Center, Mexico, Lincoln, Pulaski, Ripley, Kewanna, Burnettsville,
  Fulton, Monterey, Macy, Onward, Clymers, Beardstown and Nyena Lake.

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 4120 8669 4112 8609 4109 8607 4108 8602
      4104 8602 4104 8600 4056 8623 4056 8637
      4069 8637 4069 8652 4074 8653 4074 8675
      4068 8676 4068 8674 4065 8678 4059 8677
      4060 8679
TIME...MOT...LOC 2152Z 196DEG 57KT 4068 8676 4064 8664 4043 8639 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

FISHER

2 follow-up statements

411 
WWUS53 KIWX 112215
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
615 PM EDT Mon Oct 11 2021

INC181-112225-
/O.CAN.KIWX.SV.W.0112.000000T0000Z-211011T2230Z/
White IN-
615 PM EDT Mon Oct 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WHITE COUNTY IS
CANCELLED...

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

LAT...LON 4120 8669 4112 8609 4109 8607 4108 8602
      4104 8602 4104 8600 4056 8623 4056 8637
      4069 8637 4078 8641 4087 8643
TIME...MOT...LOC 2215Z 199DEG 60KT 4116 8655 4100 8643 4061 8630 

$$

INC017-049-103-131-149-112230-
/O.CON.KIWX.SV.W.0112.000000T0000Z-211011T2230Z/
Pulaski IN-Fulton IN-Cass IN-Miami IN-Starke IN-
615 PM EDT Mon Oct 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM
EDT/530 PM CDT/ FOR NORTHEASTERN PULASKI...FULTON...CASS...
NORTHWESTERN MIAMI AND SOUTH CENTRAL STARKE COUNTIES...

At 615 PM EDT/515 PM CDT/, severe thunderstorms were located along a
line extending from 7 miles southwest of Culver to 9 miles east of
Winamac to near Walton, moving north at 70 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...
Logansport, Rochester, Akron, Walton, Mexico, Lincoln, Kewanna,
Fulton, Monterey, Macy, Onward, Leiters Ford, Beardstown, Nyena Lake,
Leases Corner, Deedsville, Delong, Hoover, Lake Bruce and Lake
Manitou.

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 4120 8669 4112 8609 4109 8607 4108 8602
      4104 8602 4104 8600 4056 8623 4056 8637
      4069 8637 4078 8641 4087 8643
TIME...MOT...LOC 2215Z 199DEG 60KT 4116 8655 4100 8643 4061 8630 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

FISHER

917 
WWUS53 KIWX 112228
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
628 PM EDT Mon Oct 11 2021

INC017-049-103-131-149-112237-
/O.EXP.KIWX.SV.W.0112.000000T0000Z-211011T2230Z/
Pulaski IN-Fulton IN-Cass IN-Miami IN-Starke IN-
628 PM EDT Mon Oct 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PULASKI...
FULTON...CASS...NORTHWESTERN MIAMI AND SOUTH CENTRAL STARKE COUNTIES
WILL EXPIRE AT 630 PM EDT/530 PM CDT/...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with these thunderstorms.

LAT...LON 4120 8669 4112 8609 4109 8607 4108 8602
      4104 8602 4104 8600 4056 8623 4056 8637
      4069 8637 4078 8641 4087 8643
TIME...MOT...LOC 2227Z 196DEG 57KT 4135 8648 4119 8636 4080 8623 

$$

FISHER

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 11, 5:26 PM EDT	Special Weather Statement	IWX	White	49 min
Oct 11, 6:17 PM EDT	Special Weather Statement	IWX	LaPorte, Marshall, Saint Joseph, Starke	43 min
Oct 11, 6:29 PM EDT	Severe Thunderstorm Warning Considerable damage threat	IWX	LaPorte, Marshall, Saint Joseph, Starke	46 min
Oct 11, 6:36 PM EDT	Special Marine Warning	IWX		84 min

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.