Alert archive / Indiana / Tornado Warnings in 2021

Tornado Warning 10, NWS Indianapolis, IN

October 11, 2021Carroll County, Clinton County, Howard County, Indiana

NWS Indianapolis, IN issued this tornado warning at Oct 11, 2021, 9:37 PM EDT for Carroll County, Clinton County, Howard County, Indiana. It was in force for 26 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, 9:37 PM EDT (01:37 UTC)
Expired: Oct 11, 2021, 10:03 PM EDT
In force: 26 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Carroll County, IN, Clinton County, IN, Howard County, IN

The radar

The Indianapolis radar (KIND), 88 km from the middle of the area, began a volume at 01:42 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, 9:40 PM EDT	TSTM WND DMG	3 E Cutler, IN	10 TREES DOWNED ACROSS THE EASTERN PORTIONS OF THE COUNTY WITH NO SPECIFIC LOCATION NOTED. DELAYED REPORT WITH TIME AND LOCATION ESTIMATED FROM RADAR.

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 00:00Z, 1.6 hours before the alert went out and 191 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: 10 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 743 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -150 m²/s²
0-3 km storm-relative helicity: -158 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

517 
WFUS53 KIND 120137
TORIND
INC015-023-067-120215-
/O.NEW.KIND.TO.W.0010.211012T0137Z-211012T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Indianapolis IN
937 PM EDT Mon Oct 11 2021

The National Weather Service in Indianapolis has issued a

* Tornado Warning for...
  Southeastern Carroll County in north central Indiana...
  North central Clinton County in central Indiana...
  Northwestern Howard County in central Indiana...

* Until 1015 PM EDT.

* At 935 PM EDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located
  along a line extending from 13 miles southeast of Delphi to near
  Frankfort, moving north at 45 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.

* Locations impacted include...
  Burlington.

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

&&

LAT...LON 4056 8637 4056 8630 4041 8633 4026 8647
      4048 8650 4066 8638
TIME...MOT...LOC 0135Z 200DEG 38KT 4046 8647 4021 8650 

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

$$

AW

3 follow-up statements

952 
WWUS53 KIND 120151
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
951 PM EDT Mon Oct 11 2021

INC023-120201-
/O.CAN.KIND.TO.W.0010.000000T0000Z-211012T0215Z/
Clinton IN-
951 PM EDT Mon Oct 11 2021

...THE TORNADO WARNING FOR NORTH CENTRAL CLINTON COUNTY IS
CANCELLED...

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

LAT...LON 4056 8637 4056 8630 4043 8633 4043 8642
      4059 8640
TIME...MOT...LOC 0151Z 200DEG 38KT 4058 8641 4033 8644 

$$

INC015-067-120215-
/O.CON.KIND.TO.W.0010.000000T0000Z-211012T0215Z/
Carroll IN-Howard IN-
951 PM EDT Mon Oct 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
SOUTHEASTERN CARROLL AND NORTHWESTERN HOWARD COUNTIES...

At 951 PM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from 10 miles southwest of Walton to near Frankfort,
moving north at 45 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.

Locations impacted include...
Burlington.

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

&&

LAT...LON 4056 8637 4056 8630 4043 8633 4043 8642
      4059 8640
TIME...MOT...LOC 0151Z 200DEG 38KT 4058 8641 4033 8644 

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

$$

AW

698 
WWUS53 KIND 120154
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
954 PM EDT Mon Oct 11 2021

INC015-120204-
/O.CAN.KIND.TO.W.0010.000000T0000Z-211012T0215Z/
Carroll IN-
954 PM EDT Mon Oct 11 2021

...THE TORNADO WARNING FOR SOUTHEASTERN CARROLL COUNTY IS
CANCELLED...

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

LAT...LON 4043 8633 4043 8638 4046 8638 4056 8637
      4056 8630
TIME...MOT...LOC 0154Z 208DEG 42KT 4056 8635 4043 8636 

$$

INC067-120215-
/O.CON.KIND.TO.W.0010.000000T0000Z-211012T0215Z/
Howard IN-
954 PM EDT Mon Oct 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
NORTHWESTERN HOWARD COUNTY...

At 954 PM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from 8 miles southwest of Walton to 12 miles west of
Kokomo, moving northeast at 50 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.

These tornadic storms will remain over mainly rural areas of
northwestern Howard County.

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

&&

LAT...LON 4043 8633 4043 8638 4046 8638 4056 8637
      4056 8630
TIME...MOT...LOC 0154Z 208DEG 42KT 4056 8635 4043 8636 

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

$$

AW

239 
WWUS53 KIND 120203
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1003 PM EDT Mon Oct 11 2021

INC067-120213-
/O.CAN.KIND.TO.W.0010.000000T0000Z-211012T0215Z/
Howard IN-
1003 PM EDT Mon Oct 11 2021

...THE TORNADO WARNING FOR NORTHWESTERN HOWARD COUNTY IS CANCELLED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 4043 8633 4043 8638 4046 8638 4056 8637
      4056 8630
TIME...MOT...LOC 0202Z 200DEG 38KT 4065 8631 4052 8632 

$$

AW

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 11, 9:10 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton	35 min
Oct 11, 9:18 PM EDT	Tornado Warning	IND	Clinton	27 min
Oct 11, 9:30 PM EDT	Severe Thunderstorm Warning	IND	Carroll	30 min
Oct 11, 10:34 PM EDT	Special Weather Statement	IND	Bartholomew	26 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.