Alert archive / Indiana / Tornado Warnings in 2020

Tornado Warning 2, NWS Northern Indiana

August 10, 20205 counties in Indiana

NWS Northern Indiana issued this tornado warning at Aug 10, 2020, 6:38 PM EDT for 5 counties in Indiana. It was in force for 22 min. 9 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: Aug 10, 2020, 6:38 PM EDT (22:38 UTC)
Expired: Aug 10, 2020, 7:00 PM EDT
In force: 22 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Elkhart County, IN, Kosciusko County, IN, Marshall County, IN, Noble County, IN, Whitley County, IN

The radar

The Northern Indiana radar (KIWX), 13 km from the middle of the area, began a volume at 22:39 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
Aug 10, 6:45 PM EDT	TSTM WND DMG	Monoquet, IN	NEIGHBORHOOD OF NORTHWEST WOODS HAD THREE TREES DOWNED, AROUND 1 TO 2 FT IN DIAMETER. APPEARED REASONABLY HEALTHY. NUMEROUS SMALL TO MEDIUM SIZED LIMBS DOWN, RANGING FROM 3 TO 8 INCHES IN DIAMETER. ESTIMATED THUNDERSTORM WIND GUST AT AROUND 55 TO 60 MPH.
Aug 10, 6:50 PM EDT	TSTM WND DMG	1 N Oswego, IN	LARGE TREE DOWN ON THE ROAD. TIME ESTIMATED FROM RADAR.
Aug 10, 6:50 PM EDT	TSTM WND DMG	1 Ssw Leesburg, IN	LARGE TREE BRANCH WAS DOWN ACROSS SR 15. TREE SHOWS SOME ROT.
Aug 10, 6:54 PM EDT	TSTM WND DMG	Leesburg, IN	MULTIPLE LARGE TREE LIMBS DOWN IN LEESBURG. TIME ESTIMATED FROM RADAR.
Aug 10, 6:56 PM EDT	TORNADO	2 Ne North Webster, IN	NWS STORM SURVEY CONCLUDED EF-1 TORNADO OCCURRED. TORNADO TRACKED SOUTHEAST TO 1 MILE EAST OF NORTH WEBSTER BEFORE DISSIPATING. TREES WERE SNAPPED WEST OF STATE ROAD 13. A CHURCH SUSTAINED A LOSS OF ROOF COVERING. SOME HOMES SUSTAINED DAMAGE AS A RESULT OF FAL
Aug 10, 6:57 PM EDT	TSTM WND DMG	James Lake, IN	LARGE TREE DOWN.
Aug 10, 6:58 PM EDT	TSTM WND DMG	1 N North Webster, IN	WIDESPREAD TREE DAMAGE AS WELL AS SOME STRUCTURE DAMAGE FROM FALLING TREES IN THE EPWORTH FOREST AREA.
Aug 10, 7:05 PM EDT	TSTM WND DMG	Cromwell, IN
Aug 10, 7:07 PM EDT	TSTM WND DMG	1 N North Webster, IN	POWER LINES DOWN ON NORTH SIDE OF NORTH WEBSTER.

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
Aug 10, 4:26 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.6 hours before the alert went out and 251 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: 350 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1133 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

565 
WFUS53 KIWX 102238
TORIWX
INC039-085-099-113-183-102300-
/O.NEW.KIWX.TO.W.0002.200810T2238Z-200810T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
638 PM EDT Mon Aug 10 2020

The National Weather Service in Northern Indiana has issued a

* Tornado Warning for...
  Southeastern Elkhart County in north central Indiana...
  Western Noble County in northeastern Indiana...
  Northwestern Whitley County in northeastern Indiana...
  Northern Kosciusko County in north central Indiana...
  East central Marshall County in north central Indiana...

* Until 700 PM EDT.
    
* At 637 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Nappanee, moving east at 60 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Milford around 645 PM EDT.
  Warsaw and Syracuse around 650 PM EDT.
  North Webster around 655 PM EDT.

Other locations impacted by this tornadic thunderstorm include Etna
Green, Big Barbee Lake, Ridinger Lake, Monoquet, Hoffman Lake,
Leesburg, Atwood, Big Lake, Irish Lake and Lake Wawasee.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4142 8613 4152 8543 4120 8545 4128 8615
TIME...MOT...LOC 2237Z 274DEG 53KT 4135 8600 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

CR

1 follow-up statement

241 
WWUS53 KIWX 102259
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
659 PM EDT Mon Aug 10 2020

INC039-085-099-113-183-102309-
/O.EXP.KIWX.TO.W.0002.000000T0000Z-200810T2300Z/
Elkhart IN-Noble IN-Whitley IN-Kosciusko IN-Marshall IN-
659 PM EDT Mon Aug 10 2020

...THE TORNADO WARNING FOR SOUTHEASTERN ELKHART...WESTERN NOBLE...
NORTHWESTERN WHITLEY...NORTHERN KOSCIUSKO AND EAST CENTRAL MARSHALL
COUNTIES WILL EXPIRE AT 700 PM EDT...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until midnight EDT for
north central and northeastern Indiana.

LAT...LON 4142 8613 4152 8543 4120 8545 4128 8615
TIME...MOT...LOC 2258Z 274DEG 53KT 4133 8567 

$$

CR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 4:03 PM EDT	Special Marine Warning	IWX		117 min
Aug 10, 4:25 PM EDT	Beach Hazards Statement	IWX		19 hr
Aug 10, 4:25 PM EDT	Lakeshore Flood Warning	IWX		19 hr
Aug 10, 4:38 PM EDT	Small Craft Advisory	IWX		12 hr
Aug 10, 5:19 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Marshall, Saint Joseph, Starke	71 min
Aug 10, 5:22 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Fulton, Miami, Pulaski, Starke, White	98 min
Aug 10, 5:48 PM EDT	Special Marine Warning	IWX		117 min
Aug 10, 6:24 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Fulton, Kosciusko, LaGrange, Marshall, Noble and 2 more	66 min
Aug 10, 6:41 PM EDT	Tornado Warning	IWX	Elkhart, Kosciusko, Saint Joseph	19 min
Aug 10, 6:48 PM EDT	Severe Thunderstorm Warning	IWX	Huntington, Kosciusko, Miami, Wabash, Whitley	42 min
Aug 10, 7:11 PM EDT	Tornado Warning	IWX	Allen, Huntington, Whitley	34 min
Aug 10, 7:18 PM EDT	Severe Thunderstorm Warning	IWX	Adams, Allen, DeKalb, Huntington, Noble, Wells and 1 more	42 min
Aug 10, 7:22 PM EDT	Special Weather Statement	IWX	Steuben	38 min
Aug 10, 7:25 PM EDT	Special Weather Statement	IWX	Blackford, Wells	35 min
Aug 10, 7:51 PM EDT	Severe Thunderstorm Warning	IWX	Adams, Allen	54 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.