2013 Severe Weather Events

July 16th, 2013 at 11:25 am by under Chad's WLFI Weather Blog

January 29-30 Night-Time-Early Morning QLCS Squall Line

QLCS squall line raced through in the form of one short segment in our northwestern areas & then the main squall line over most of the viewing area January 29-30.  Timing of the lines occurred generally between 9 p.m. & 1:30 a.m.

Sporadic severe wind gusts accompanied the line as high as 65 mph.  One tornado velocity signature was seen in Carroll County, but rotation signature was largely mid-level & did not drop enough to low-level to warrant tornado warning per NWS.

Trees were reportedly felled in Montgomery County & Tipton counties with an aluminum shed in Carroll County damaged.  A trampoline was blown a considerable distance at this site, with limbs & small trees downed northeast of Flora.

Damaging gusts tended to occur where dew points reached 60-61, while much of the intense wind remained a few thousand feet off the ground in areas with dew points below 60 as buoyancy prevented enough updrafts to tap into strong winds close to the ground & bring them to the surface.

Think of an improperly inflated balloon.  No matter how much you try to force it upward, it never tends to rise high on its own (lower dew points, bit cooler air).  A properly inflated balloon will rise & tap into air currently well above it & float (dew point 60 or 61 & bit warmer air).  Same applies to dew points & their associated surface instability.

+80 mph low-level jet & influx of warmth & higher dew points caused the squall line to organize quickly with +115 mph winds at upper levels aiding in lift.  Additionally, record warmth preceded the QLCS squall line in the 60s & heavy rainfall accompanied the line & lasted for several hours behind it.  This resulted in 1-3″ of rainfall over the 2-day period with areas of minor flooding.

High-resolution model wind projections several hours prior to event:

Precision 18 Doppler radar wind data during event:

Below shows actual measured wind gusts & a few estimated gusts from spotters:

April 10-11, 2013:  Day-time Multi-Cellular Hailers & Night-time QLCS Squall Line

Severe weather event unfolded April 10-11 in two parts.  1-3.5″ of total rainfall fell during the two rounds, resulting in areas of flash flooding.  River flooding event occurred several days afterward with Wabash cresting 6-8′ above flood stage Lafayette to Covington.  Many other rivers & streams reaching either bankfull or over flood stage during & after event.

24-hour rainfall totals for these days are 7 a.m. to 7 a.m.



3 cluster of largely elevated multi-cellular storms passed through north of a surface warm front in the afternoon-evening of April 10.  A few were surface-based south of the warm front, where some gusty winds were able to make it to the surface & accompany the large hail.  The multiple rounds also trained over the same areas, leading to some locations receiving over 2″ of rainfall.  This led to areas of flash flooding particularly in northern Warren, northwest Clinton, southeastern Carroll.



Trees Down – 1.5 Miles Northeast Kirklin

0.25″ Hail – South Lafayette

0.25″ Hail – Klondike

0.25″  Hail – Battle Ground

1.00″ Hail – Kokomo

1.00″ Hail – Converse

0.25″ – Greentown

0.50″ – East of Greentown

1.00″ Hail – 2 Miles Northeast of Dayton

1.00″ Hail – 2 Miles West of Darlington

0.88″ – Darlington

0.88″ Hail – South of Dayton

1.00″ Hail - East of Dayton

0.25″ Hail – Windfall

1.00″ Hail – New Ross

M51 mph Gust – Crawfordsville

E45 mph – Ladoga

0.50″ Hail – WLFI-TV



A QLCS squall line of t’storms raced through the area Wednesday night-early Thursday morning 12 a.m. to 3 a.m.  Several small bow & LEWPs formed in the line, mainly in the southeastern half of the viewing area.  There, it warmed up to near 61 ahead of the line.

One particular bow produced sporadic wind damage from south of Covington to Hillsboro to near Crawfordsville to near Rossville.  This bow developed an LEWP in the line that produced a low-level rotation signature, prompting a tornado warning for northeastern Montgomery, southeastern Tippecanoe, Clinton, southeastern Carroll & Howard counties.

This line dumped additional rainfall that resulted in a total of 1 to 3.5″ of rainfall across the viewing area.  Some roads were flooded by the rainfall in Carroll & Clinton counties.



Trees, limbs down near Hillsboro & farm shed damaged with 3 power poles leading

Many trees & some powerlines down near Mulberry

M64 mph:  Rossville WLFI Tower Site Weather Station

Several large limbs down south of tower site weather station

E58 mph:  6 ESE Covington

M52 mph:  Crawfordsville

M60 mph:  Frankfort

M45 mph:  Kokomo

M43 mph:  Kokomo Municipal Airport

M38 mph:  Burlington

M37 mph:  Grissom Air Reserve Base

M34 mph:  Pine Village

M33 mph:  Michigantown


ADI Map 7

Damage pics from near Hillsboro in Fountain County (courtesy of Tyler Snider & Sam Harding):



Several supercell t’storms formed near/on warm front during the evening of April 17.  Producing hail as large as golfballs, gusts of 50 mph also occurred with the storms.  One particular storm showed a very pronounced, strong low-level rotation signature.  Spotters did reports a rotating wall cloud with this feature, but no funnel developed.

Storms brought torrential rainfall of up to 1″ in a short period of time.



1.75″ Hail 1 Mile South of Ladoga

1.50″ Hail  Ladoga

E40 mph Gust  Ladoga

1.50″ Hail  3 Miles North of New Ross

1.50″ Hail  2 Miles North of New Ross

1.00″ Hail  New Ross

E50 mph Gust Ladoga

Rotating Wall Cloud  New Ross

1.50″  Hail  Mackie

1.25″ Hail  Northeast Mackie

1.00″ Hail  3 Miles Northeast of Ladoga

1.00″ Hail  Thorntown

0.25″ Hail  Advance

Rotating Wall Cloud  3 Miles Northeast New Ross

Rotating Wall Cloudy 3 Miles Northwest of Advance

0.25″ Hail  Antioch

0.25″ Hail  Rensselaer

0.25″ Hail  Kentland

0.25″ Hail  WLFI

0.25″ Lafayette


Squall line on the morning of April 18 produced severe gusts & wind damage in Newton, Jasper, Benton, Warren & Fountain counties.  The heaviest damage was in Earl Park where several buildings, including a retirement home, were damaged (along with trees & powerlines).

Weak low-level rotation signature was evident on radar with LEWP in the squall line around Earl Park.  However, damage all points towards straight-line wind damage of 80 mph in a narrow corridor embedded in a broader swath of 55-65 mph wind gusts.

This particular LEWP’s bow (tornado signature was embedded in the middle of the  “S”-shape of LEWP) did produce a gust to 61 mph at Kentland with trees & limbs downed.

After this, waves of showers & t’storms continue all day, but were not severe.

Second squall line in the evening produced wind gusts of up to 50 mph & torrential rainfall.

The training of this line & heavy bouts of rainfall since the evening before, produced the widespread, significant flooding in the area by the morning of April 19 with the Wabash at Lafayette reaching its highest level since June 14, 1950 & at Covington since January 7, 1950.  The Wildcat at Lafayette reached its highest level since July 7, 2003.  Record flooding occurred on creeks in Howard, Tipton & Boone counties, while Oakdale Dam discharge caused minor flooding downstream.  Widespread field & road flooding also occurred area-wide, specifically in our southeastern counties where rainfall totals ended up being the highest.

A wet winter, snowy March & wet mid-April caused this flood to be significant.




Earl Park  Trees & limbs down, powerlines down & building damage……….grain bin downed

Earl Park  Part of roof of retirement home collapsed

Earl Park  Shed blown onto U.S. 41

Mt Ayr  Several power poles blown down onto County Road 200 south between Meridian Road & County Road 100 West.

E60 mph  Mt. Ayr

M65 mph  Morocco

M64 mph  Near Dunn’s Bridge

M61 mph  Kentland

M60 mph  4 Miles Southeast of Fowler

M53 mph  Pine Village

M52 mph  Rensselaer

M49 mph  Rensselaer High School

M49 mph  Winamac

M44 mph  Jasper County Airport

M41 mph  Frankfort

M40 mph  Attica

M37 mph  Covington

M37 mph  Purdue University Airport

M37 mph  5 Miles Northwest Rochester

M37 mph  WLFI-TV



M50 mph Covington

M50 mph Crawfordsville

M48 mph  Atlanta

M45 mph Frankfort

M44 mph  Michigantown

M44 mph  Kokomo Municipal Airport

M41 mph  Kokomo



Supercells from major tornado & severe weather outbreak gelled into a squall line that raced eastward with a couple of bows in the early, early morning hours of May 21.

Sporadic straight-line wind damage occurred with highest wind seemingly about 3 miles south of Burlington, where 2 chicken houses were reportedly destroyed.  There, it appears microburst with winds of 85 mph occurred.

An EF0 tornado was confirmed just south of the Montgomery/Putnam County line near Roachdale.  Trees were knocked down, a barn & shed was damaged & irrigation rigs were overturned.

There were 3 reports of hail in Benton & Newton County from penny-size at Kentland, dime size north of Earl Park & pea-sized south of Morocco.

1 Mile Southwest of Hillsboro   Barn Destroyed & Trees Down

New Richmond    Trees Down

Northwest Boone County    Trees Down

Flora    Trees & Powerlines Down

Tipton   Trees Down

3 miles south of Burlington  2 chicken houses destroyed.

Bringhurst     Trampoline in the field. It had been picked up, taken over livestock fence and dropped in the field about 1/4 mile.

Middlefork    Trees & Limbs down




An LEWP in the evening, followed by a large bow with a Bookend Vortex at the top of the bow overnight.  Both produced damaging straight-line winds & tornadoes in our viewing area & eastern Illinois.  Heavy rainfall was also produced.

An EF0 tornado with winds to 85 mph & a 0.5-mile path occurred in Benton County 1 mile north of Templeton.

An EF1 (winds up to 95 mph) occurred 13 miles southwest of Covington near Westville, Illinois.

Otherwise, damaging straight-line winds of up to 72 mph were reported with some isolated small hail.


4545471456ADI Map II

Emily Stover video:

Joshua McKenzie video:


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M=Measured Gusts  E=Estimated Gusts From Spotters

EF0 Tornado on ground for 1/2 mile:  South of Fowler
M72 mph:  4 Miles Northeast of Lebanon
M71 mph:  East of Earl Park

M71 mph: 1 Mile West of Earl Park
M63 mph:  Jasper County Airport

M62 mph:  Morocco (From Evening LEWP)
M60 mph:  Kentland
M59 mph:  Fowler
M59 mph:  Rensselaer
M56 mph:  Burlington
M55 mph:  2 Miles East of Lafayette
M55 mph:  Covington
M53 mph:  Grissom Air Reserve Base

M52 mph:  Attica
M48mph:  Pine Village
M48 mph:  WLFI-TV
M47 mph:  Monticello
M47 mph:  Purdue Airport
M47 mph:  Frankfort
M44 mph:  Morocco (Gust from Line)
M43 mph:  Cass County Airport
M40 mph:  Crawfordsville

Kentland:  Trees, limbs & power poles down
Chalmers:  Minor roof damage to home
Rensselaer:  Limbs down
Burlington:  Trees & limbs down
Macy (Miami County):  Trees uprooted & antenna blown down at Nyona Lake near Macy
Rensselaer:  Widespread trees & powerlines down
Brook:  Trees & powerlines down
Morocco:  Trees down
North of Frankfort:  Pea-sized hail
Mt. Ayr:  Trees down & power poles leaning
Boswell:  Shed damaged & trees down
Lafayette:  Large tree down & several limbs down
2 Miles South of Medaryville:  Trees & powerlines down
Francesville:  Limbs down
Attica:  Trees down at the golf course
Akron:  Trees down
Conditions prior supported development of HP supercells & derecho:
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HP supercells fired at first with several reports of tornadoes in Iowa, Illinois & southern Wisconsin, along with large hail.
Supercells produced several reports of 1.75″ to 2.00″ hail in Jasper & Pulaski counties.  They gradually gelled into a multicellular cluster & other supercells in Illinois gell & merge with it to form an increasingly widespread, significant straight-line wind event (derecho)
In this process, a possible tornado occurred near Indiana Beach & north of Georgetown in White & Cass counties.
Otherwise, damaging straight-line winds became the main element with large hail waning.
Torrential rains with all of the storms produced intense rainfall rates, which led to flash flooding.

Near Buck Creek Fire Department:  Tree Down

Colburn & Buck Creek:  Tree Damage

10 Miles West of Kokomo:  Limbs Down

4 Miles Southeast of Kokomo:  Limbs Down

3 Miles East of Chili:  Damage Along East 600 North East of Paw Paw Pike.  Large Tree Uprooted, Roof Off House, Hog Barn Partially Destroyed

Burlington:  M60 mph

Morocco:  M58 mph

Rensselaer:  M51 mph

Jasper County Airport:  M43 mph

Cass County Airport:  M40 mph

North of Rensselaer:  1″ Hail

Kentland:  M70 mph

Kentland:  Pea-Sized Hail

10 Miles West of Winamac:  0.88″ Hail

West of Rochester:  Rotating Wall Cloud

Near Fowler:  Siding Off House

1 Mile Northwest of Kewanna:  1″ Diameter Hail

Sitka:  Funnel Cloud

North of Georgetown:  Brief Tornado Touchdown Reported

Rossville:  Trees Down Over Roads

Denver:  Route 19 Closed Due to Fallen Trees & Powerlines

Delphi:  1″ Diameter Hail

5 Miles East of Rochester:  3′ Diameter Tree Branch Fell On House

Francesville:  E50 mph

Francesville:  Pea-Sized Hail

Gust 80 mph near Onward

Twelve Mile:  Large Branch On & Into House

Macy:  Many powerlines down

Peru:  M69 mph

Camden:  Trees & Lines Down

Brief Tornado Touchdown Reported North of Monticello

Wind gust of 80 mph measured near Indiana Beach with trees & powerlines down.

Wolcott:  M65 mph………….45 mph Sustained for 15 Minutes

Mt Ayr:  M69 mph

Mt. Ayr:  2-8″ Diameter Branches Down.

Monticello:  M48 mph

Trees down in Goodland.

Wheatfield:  E60 mph

Fulton County Airport:  M46 mph

Siding torn off house Southeast of Fowler.

Southeast of Fowler:  M64 mph

Monon:  E70 mph

North of Kokomo:  M70 mph


A squall line with pockets of damaging straight-line passed on the evening of June 24, 2013.  Winds were measured as high as 71 mph with the line with several pockets of substantial straight-line wind damage done, mainly to trees & powerlines.


Josh Gimbel snapped these pictures at Route 25 & I-65:



2 Miles West of Otterbein:  Trees & Powerlines are Down

Fowler:  Large Branch Down

South of Delphi Near Radnor:  M61 mph

South of Delphi:  Tree Down Over U.S. 421

6 Miles North of Lafayette:  Trees down

Battle Ground:  Tree down on power line at 200 block of Jewett Street

Klondike:  Tree down at Point West II

Mt. Ayer:  M71 mph

Sumava Resorts:  E70 mph

7 Miles Northwest of Enos:  E65 mph

3 Miles North of West Lafayette:  E50 mph

Mt. Ayer:  Limbs, trees & power poles down between 500 N & 800 N on Route 55.  Powerlines down across vehicle with occupant trapped on Route 55.

Morocco:  M54 mph

Lake Village:  Trees down

5 Miles East of Fowler:  E58 mph

WLFI-TV:  M51 mph

Southside of Lafayette:  E40 mph

Morocco:  Powerlines down

Jasper County Airport:  M31 mph

Rensselaer:  M41 mph

Fowler:  M55 mph

Monticello:  M30 mph

Winamac:  M31 mph

Attica:  M36 mph

Fulton County Airport:  M50 mph


An MCS passed late morning-early afternoon on July 10, 2013.  Sporadic damaging winds were produced by the MCS, with two notable macrobursts & one tornado.

Macroburst with winds to 90 mph were produced on the west & northwest sides of Peru into west-central Miami County.  Another macroburst with winds to 80 mph was produced in western Cass County Onward to Walton.

A broad swath of strong to severe straight-line winds at 50-70 mph produced widespread wind damage in the southern portion of Miami County.

Otherwise, sporadic bursts of gusts of 45-60 mph were produced by the MCS in the west-central, central & east-central parts of the viewing area.

NWS survey confirmed EF1 tornado (winds to 95 mph) southwest & on the far southwest to southeast sides of Peru.  With a 3.5-mile path, width reached 200 yards at its widest point.

It appears that the tornado occurred on the south side & of the Peru macroburst & east side of the Cass County macroburst in an area of horizontal rolls.  Also, a truck with a trailer was overturned & several cars were flipped.  Enhanced Fujita Scale explains that cars/trucks are flipper at the beginning of EF2 strength (111 mph).  In 2011, storm survey at Oakland City, Indiana (Paducah NWS) revealed 110 mph macroburst, but no cars were overturned.  Thus, NOAA data point that where those cars & that truck & trailer were flipped, winds may have briefly exceed EF1 strength.

Regardless, this brief tornado was interesting in that it occurred as two storms merged & two macrobursts’ horizontal rolls merged.  With this, I honestly thought it may be a gustnado at first, especially since rotation on radar was very subtle & unusually (nearly) non-existent for an EF1, perhaps briefly EF2 tornado.  Tornado-like damage produced when tornado signatures are not visible point towards gustadoes or horizontal rolls of a macroburst.  I have seen gustnadoes completely destroy mobile homes, but Tornado Warnings are not issued for gustnadoes.

A supercell just north of the MCS produced 2.00″ hail in Kankakee County, Illinois & 1.75″ hail just north of the Kankakee River near Route 2 & I-65 interchange.  This storm just skimmed by northern Newton, Jasper & Pulaski counties.

The heaviest rains with this MCS occurred in Cass, Carroll & Miami counties with the rest of the area receiving a trace to 0.80″

Prior to the MCS, a hot, tropical, unstable airmass was in place with temperatures near 80 the night before at 11 p.m. & highs the previous day as high as 92 with heat indices to 104.  Dew points reached as high as 75 degrees on the morning of July 13, just prior to the MCS.

Following the MCS, surface cold front passed & ushered in a cooler, less humid airmass.

Radar image from that morning as severe weather passed:




Cass/Miami storm, watches/warnings & radar velocity data at time of macrobursts & tornado:



Peru Damage:


Measured & Estimated T’Storm Gusts Via Spotters, Damage, Spotter Anemometers, WLFI Anemometers, Mesonet Anemometers & ASOS Wind Sensors at Airports.



Trees & powerlines down & crops flattened from Walton to Onward

Large limb down at Co. Road 850 E & Route 28 5 miles Southwest of West Point

Part of roof blown off Kroger Grocery Store on southwest Side of Peru with cars flipped over & a truck & trailer flipped over

Structural damage on the southwestside of Peru with trees & powerlines down

Corn Down Between Monticello & Delphi

M60 mph  Peru

M70 mph  Grissom Air Reserve Base ASOS

M54 mph  4 SE Fowler

M52 mph  5 S West Point

M51 mph  2 W West Lafayette

M51 mph Cass County Airport AWOS

E50 mph  Remington

M50 mph Burlington

M49 mph West of Frankfort

M45 mph  Clinton Prairie High School

M41 mph  Attica

E40 mph  West of Odell

M40 mph  Purdue University Airport ASOS

M38 mph  3 NW Michigantown

M41 mph Monticello

M35 mph Covington

M34 mph Crawfordsville

M50 mph  Kokomo Municipal Airport

M34 mph  Carroll Junior/Senior High School

Trees Down In Flora with Damage to Corn.  Corn Breakage Observed.

Tree Down On the Northside of Lafayette

Some Medium to Large branches down in Lafayette

Trees Down in Colfax, Rossville & Mulberry areas

Limbs Down in Mexico & Peru

Limbs Down in Logansport

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