Alert archive / Indiana / Tornado Warnings in 2020

Tornado Warning 4, NWS Indianapolis, IN

July 21, 2020Carroll County, Clinton County, Tippecanoe County, Indiana

NWS Indianapolis, IN issued this tornado warning at Jul 21, 2020, 2:09 PM EDT for Carroll County, Clinton County, Tippecanoe County, Indiana. It was in force for 18 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: Jul 21, 2020, 2:09 PM EDT (18:09 UTC)
Expired: Jul 21, 2020, 2:27 PM EDT
In force: 18 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Carroll County, IN, Clinton County, IN, Tippecanoe County, IN

The radar

The Indianapolis radar (KIND), 84 km from the middle of the area, began a volume at 18:08 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
Jul 21, 2:11 PM EDT	TSTM WND DMG	2 Wnw Dayton, IN	LARGE METAL DOORS WERE BLOWN OFF OF THE TOYOTA TSUSHO AMERICA INC PLANT AT 5440 HAGGERTY LANE. EMPLOYEE TOLD TV MEDIA THAT IF NOT FOR THE TORNADO WARNING AND THEIR RESULTING SHELTER IN PLACE EMPLOYEES WOULD HAVE BEEN STRUCK. TIME IS ESTIMATED FROM RADAR.
Jul 21, 2:12 PM EDT	TSTM WND DMG	Dayton, IN	MULTIPLE TREES DOWN WITH POWER OUTAGES REPORTED.

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
Jul 21, 1:24 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.2 hours before the alert went out and 166 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: 474 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 804 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

091 
WFUS53 KIND 211809
TORIND
INC015-023-157-211845-
/O.NEW.KIND.TO.W.0004.200721T1809Z-200721T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Indianapolis IN
209 PM EDT Tue Jul 21 2020

The National Weather Service in Indianapolis has issued a

* Tornado Warning for...
  Southwestern Carroll County in north central Indiana...
  Northeastern Tippecanoe County in west central Indiana...
  Northwestern Clinton County in central Indiana...

* Until 245 PM EDT.
    
* At 208 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Lafayette, moving east at 35 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.

* This dangerous storm will be near...
  Mulberry around 220 PM EDT.
  Rossville around 230 PM EDT.

This includes Interstate 65 between mile markers 166 and 176.
 
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 4035 8651 4032 8688 4045 8692 4055 8655
TIME...MOT...LOC 1808Z 250DEG 31KT 4039 8683 

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

$$

CP

2 follow-up statements

251 
WWUS53 KIND 211815
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
215 PM EDT Tue Jul 21 2020

INC015-023-157-211845-
/O.CON.KIND.TO.W.0004.000000T0000Z-200721T1845Z/
Carroll IN-Tippecanoe IN-Clinton IN-
215 PM EDT Tue Jul 21 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM EDT FOR
SOUTHWESTERN CARROLL...EAST CENTRAL TIPPECANOE AND NORTHWESTERN
CLINTON COUNTIES...
    
At 215 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Lafayette, moving east at 35 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.

This dangerous storm will be near...
  Mulberry around 220 PM EDT.
  Rossville around 230 PM EDT.

This includes Interstate 65 between mile markers 166 and 172.
 
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.

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

&&

LAT...LON 4035 8651 4033 8683 4046 8683 4055 8655
TIME...MOT...LOC 1815Z 250DEG 31KT 4041 8675 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CP

815 
WWUS53 KIND 211827
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
227 PM EDT Tue Jul 21 2020

INC015-023-157-211836-
/O.CAN.KIND.TO.W.0004.000000T0000Z-200721T1845Z/
Carroll IN-Tippecanoe IN-Clinton IN-
227 PM EDT Tue Jul 21 2020

...THE TORNADO WARNING FOR SOUTHWESTERN CARROLL...EAST CENTRAL
TIPPECANOE AND NORTHWESTERN CLINTON COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 500 PM EDT for
central, north central and west central Indiana.

LAT...LON 4035 8651 4033 8683 4046 8683 4055 8655
TIME...MOT...LOC 1826Z 250DEG 31KT 4044 8662 

$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 1:09 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Warren	36 min
Jul 21, 1:44 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Tippecanoe, Warren	31 min
Jul 21, 1:49 PM EDT	Special Weather Statement	IND	Montgomery	26 min
Jul 21, 2:30 PM EDT	Special Weather Statement	IND	Carroll, Clinton	30 min
Jul 21, 2:38 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard, Tipton	37 min
Jul 21, 3:07 PM EDT	Special Weather Statement	IND	Boone, Hamilton	38 min
Jul 21, 3:14 PM EDT	Special Weather Statement	IND	Tipton	31 min
Jul 21, 3:47 PM EDT	Special Weather Statement	IND	Delaware, Madison	43 min
Jul 21, 4:09 PM EDT	Severe Thunderstorm Warning	IND	Delaware	36 min
Jul 21, 7:25 PM EDT	Special Weather Statement	IND	Monroe	50 min
Jul 21, 7:32 PM EDT	Severe Thunderstorm Warning	IND	Brown, Monroe, Morgan	43 min

Nearby

Tornado Warnings in Indiana, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.