Chad’s WLFI Weather Blog

Areas of Dense Fog Tonight….Hottest Day of 2014 (So Far) Tuesday

July 20th, 2014 at 7:39 pm by under Chad's WLFI Weather Blog

Had a great time in Wisconsin at a wedding & lake house.  It was quite warm!  It was even warm enough to get into lake water & hang out on a beach.  Each day was beautiful.

A PLEASANT STRETCH…………..AREAS OF DENSE FOG TONIGHT………..

Today is the first day we have exceeded 80 since July 14, a total of 6 days, though yesterday our 79 nearly exceeded it.

The last time we had such a stretch in July was last year when we had 8 consecutive days below 80 to round out the month.

Also, the Purdue Ag Farm COOP had an official record low of 48 on the 16th, beating the previous low of 49.  The airport dropped to 50.  We reached 49.3 at the television station.

HOTTEST DAY OF THE YEAR, SO FAR………….

Monday looks very warm & rather humid with highs in the upper 80s to around 90.  Heat indices will run near 90 to the middle 90s.

We are now looking at the hottest day of the year, so far, on Tuesday with highs of 91-95.  Heat indices in the viewing area may reach 103 in places Tuesday.

Heat Advisories are in effect from northern Minnesota to central Missouri & Kansas as the most widespread, substantial Midwest/Great Lakes/Northern Plains heat event of 2014, so far, takes shape.  Excessive Heat Warnings are in effect for the Minneapolis area & Air Quality & Ozone Alerts have been issued for western Michigan, northeast Illinois & northwest Indiana.  Actual temperatures may push 110 in Kansas Tuesday with 100 to North Dakota & western Minnesota Monday.

T’STORM POTENTIAL…………..

A severe weather outbreak is possible over Minnesota Monday night-Tuesday with storms in our area Tuesday night-early Wednesday.  Potential exists for a squall line/MCS with wind threat.

BRIEF COOL-DOWN………..THEN HEAT, HUMIDITY & MORE T’STORMS………..

Brief cool-down to 80 is likely Wednesday, followed by 80s, humid condition & lows near 70 to round out the week with return of t’storm potential.

 

 


Comfortably Cool Day (10-15 Degrees Below Normal)

July 15th, 2014 at 9:21 pm by under Chad's WLFI Weather Blog

I am off of work for the yearly around week of vacation until Monday, but will be back on either Sunday night or early Monday morning.  Off the grid for 5 days with family time, I will dive back into it as the heat & humidity return for next week.

Everyone take care!

-Chad

_______________________________________________________________

It was a very comfortable day!  This evening, a few isolated showers are pivoting in from the northwest.

This will pass this evening-tonight with mostly cloudy skies.

Lows tonight will be in the 50s.

DMA MapII1


Cool July Records

July 15th, 2014 at 5:41 pm by under Chad's WLFI Weather Blog

Our high at WLFI of 71.6 today is the coolest July high temperature since last year when the high on July 30 was 71.6.

The Purdue University Airport either hit 69 or 70, the coolest since July 30 of last year, when the high was 71.  July 2 of last year, the airport was just 69.

The Ag Farm hit 72 last year in late July & was 69 in early July.  The television station was 70 July 2.

We will find out how warm the Purdue Ag Farm got  today by 10a tomorrow. 

Low 70s are not rare in July, but when the temperature falls to hit 70, you get into rare territory. 

Since 1887, only 10 days of 3937 July days have failed to reach 70.

12


Unseasonably Cool Today……..Hottest Weather of the Summer Coming Next Week

July 15th, 2014 at 12:53 pm by under Chad's WLFI Weather Blog

Looks like readings as high as 94 possible next week in the viewing area.

Below is the long-range GFS mos forecast.  This is the first time all year it has shown 90s so far out.

Pattern will completely do a complete 180 from where we are right now.  I have 68 degrees as of 12:54 p.m.  Temperatures today will run 10-15 degrees BELOW normal as the deep upper trough swings through with the unseasonably cool temperatures for late July.

LAFAYETTE           
 KLAF   GFSX MOS GUIDANCE   7/15/2014  0000 UTC                       
 FHR  24| 36  48| 60  72| 84  96|108 120|132 144|156 168|180 192      
 TUE  15| WED 16| THU 17| FRI 18| SAT 19| SUN 20| MON 21| TUE 22 CLIMO
 X/N  68| 52  76| 50  80| 55  82| 59  84| 62  85| 65  89| 67  91 64 85
 TMP  64| 55  67| 54  74| 59  76| 63  78| 65  80| 68  83| 70  84      
 DPT  53| 54  50| 53  55| 57  57| 59  63| 62  66| 65  68| 66  70      
 CLD  PC| CL  PC| CL  CL| CL  CL| CL  PC| CL  CL| CL  CL| CL  CL      
 WND  12|  7   6|  4   4|  2   6|  3   6|  4   7|  4   7|  4   7      
 P12   8| 11  17| 11  11| 12  11| 15  18| 25  24| 26  22| 20  21999999
 P24    |     17|     13|     21|     25|     41|     35|     32   999
 Q12   0|  0   0|  0   0|  0   0|  0   0|  0   0|  0    |             
 Q24    |      0|      0|      0|      0|      1|       |             
 T12   8|  4  28|  3  22|  5   7|  4  20| 13  30| 14  21| 15  29      
 T24    | 29    | 28    | 22    | 10    | 28    | 31    | 37


2014 Severe Events (As of July 14)

July 15th, 2014 at 2:47 am by under Chad's WLFI Weather Blog

FEBRUARY 20, 2014 SEVERE EVENT

A QLCS squall line raced through largely our southern half on February 20 with damaging straight-line winds & one confirmed tornado.

Additionally, rapid snow melt from much warmer weather & rainfall caused flooding & significant ice jams on rivers & streams.

An ice jam on the Eel River in Cass County caused flooding with a few home evacuations.  Ice jam on Wildcat Creek has also caused back-up flooding, resulting in several home evacuations.

The Wabash had a 7-mile long ice jam in Carroll & Cass counties, backing up floodwater further in to Cass County.

Pipestone Creek on the Cass/Miami line had an ice jam with back-up flooding being reported.

Event images & NWS tornado survey (note: tornado is not on severe storm reports map, as it was confirmed after this map was made).

Tornado was a part of LEWP in the line with one signature southeast & east of Crawfordsville & another north of Crawfordsville.  The one southeast & east of Crawfordsville produced the tornado.

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Track is based on radar data & NWS information:

1514

FGIH

IHBADI Map II

M

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STORM REPORTS:

Hillsboro:  Small limbs down & shingles off home

Crawfordsville:  M61 mph

Tipton:  E65 mph

Atlanta:  M67 mph

Frankfort:  Semi overturned, leaking propane.  I-65 closed.

Northeast of Frankfort:  5 minutes of gusts of 50-52 mph.

Frankfort:  M55 mph

Kokomo:  M54 mph

Attica:  M50 mph

Covington:  M52 mph

Thorntown:  M62 mph

Burlington:  M51 mph

Logansport:  M58 mph

Montgomery County:  Several reports of shingles blown off homes.

_______________________________________________________

MAY 21, 2014 SUPERCELLS WITH LARGE HAIL & MICROBURST

The second severe weather event of the year struck today with hail to baseball size & one significant microburst.

Overnight, supercell/multi-cells gelled into an MCS that clipper our north/northeast.  Marble hail & gusty winds were reported in the morning in Cass, Miami counties.

The outflow boundary from these storms set up in the heart of the viewing area.  With nice northwest flow at mid & upper levels along with a very unstable, hot, juicy environment, supercells & multi-cells popped rapidly.  The high CAPE & steep lapse rates with shear from the stronger flow aloft made for lots of hail & a few minor to significant microbursts.

Storms also popped on the actual surface cold front.  As another core of stronger mid- & upper-flow helped to ignite these storms.

Eventually the cold front merged with the outflow boundary in the evening & as that even stronger flow arrived we had billiard ball to baseball hail in southeast Fountain & southwest Montgomery counties this evening.  Hail of up to softball size fell in eastern Illinois.

Tree limbs were reportedly downed near Kingman & Covington with 50 & 53 mph gusts.  An intense microburst around Lebanon caused tree damage & even toppled many large trees (one 3′ in diameter at breast height).  Power poles & line were also down.  In this 1.5- to 2-mile oval, winds may have gusted 70 to perhaps 75 mph.

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Images of the event:

357111023

Ryan Harber (West Lafayette):  Storm over Boone County as seen from West Lafayette…………..

John Mahoney (West of Frankfort on I-65):  Wall cloud on back side of supercell that produced 1.75″ hail & 50 mph gust in Clinton County……………..

Autumn McGregor (South of Pine Village):  Underbelly of severe storms over Vermillion & Parke counties this evening, showing the mammatus…………………….

Beth Mantle (Attica):  Underbelly of storm from Parke County showing mammatus……………………

Lyndsey Gayler (West Point):  Mammatus over West Point…………….

Ryan35789

_______________________________________________________________________

JUNE 18, 2014 LINE OF STORMS

A line of storms with a relatively narrow swath of wind damage passed through the area in the afternoon.  These overturned the airmass & gutted a lot of the surface instability for storms.  These storms did struggle due to capping (CINH) issues nudging in from Plains/western Corn Belt upper ridge.

However, central Illinois missed the storms & was highly-unstable, hot & humid in the evening with surface CAPE to 4500 J/kg.  This advected back in & although it was more elevated instability at first, the storms & instability became increasingly surface-based with time.  That, in combination with good downdraft CAPE & lake breeze front & a slightly-bowing line of storms passed through in the evening in the “Ring of Fire” or periphery of Plains & western Corn Belt upper ridging, capping & heat.

STORM REPORTS:

East of Morocco:  Powerlines down

East of Morocco:  E70 mph

Lake Village:  E60 mph

Northern Newton County:  Powerlines down & on fire

North of West Lafayette:  E60 mph

WLFI-TV:  M55 mph

Lake Cicott:  Trees down

White County:  Multiple trees down countywide

Burlington:  M60 mph

Kokomo:  M64 mph

Delphi:  Trees down on Tecumseh Bend Road

Peru:  Tree down on power lines

Northeast of Thorntown:  M51 mph (Report Missing In First Image)

117DMA Map II

Images of the event:

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311323533324241424551525755

Autumn McGregor:  Near Pine Village

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Pam Leonard:  Monticello

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__________________________________________________________________________

JUNE 30-JULY 1, 2014: TWO DERECHOS

A long-lived, long-track derecho raked areas just north of the viewing area during the late evening of Tuesday, June 30.  This did prompt Severe T’Storm Warning for far northern Jasper County at 9 p.m., but wind stayed just north of the Kankakee River.

Second derecho races east & southeastward, affecting area 11 p.m. to 2 a.m. on a very sultry, juicy night.   WLFI dew point hit 78.  Morocco dew point hit 79!

Storms raced southeastward between though they encountered CINH (capping) with southward progression & began to weaken.

However, they did produce gusts of 45-55 mph, even with weakening.  As they completely collapsed, extensive wind damage occurred in our far southeast & east & then in the Indianapolis area.

Aided by upper trough & ridge-riding shortwave, storms exploded on plume of very high surface CAPE in Illinois & Indiana, which had been capped all afternoon.  Surface CAPE reached 4500-5500 J/kg, which lingered after dusk & supported the severe threat.

Less capping (CINH) & more dynamics, but bit less CAPE brought the most widespread damaging winds to our northern & northwestern counties.

3

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18212331353738394041424546484952535659636465

Winamac Damage (from Betty & Teri):

234578111314

NWS Chicago has confirmed one EF1 tornado occurred in the June 30-July 1 derecho in our viewing area.

Embedded in the significant damaging straight-line winds, it appears a tornado (perhaps multiple tornadoes) occurred in northern Jasper County east & northeast of Demotte in an 8-mile path.

Below is image of velocity data as tornado was northeast of Demotte before lifting.  At this point, it was still likely as EF1.  Velocity data still indicated 95 mph winds at beam level about 4.5 miles northeast of Demotte at this time.

A tornado was also confirmed near Lowell.  You can see the signature of it in the second image.

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Tornadoes were confirmed in Kankakee & Will counties in Illinois.  However, extreme straight-line winds to 100 mph hit Morris, Illinois.

3837

Pics of the tornado damage are courtesy of NWS Chicago:

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TORNADO # 5 IN AND NEAR DEMOTTE INDIANA...

RATING:                 EF-1
ESTIMATED PEAK WIND:    100-105 MPH
PATH LENGTH /STATUTE/:  8.0 MILES
PATH WIDTH /MAXIMUM/:   200 YARDS
FATALITIES:             NONE
INJURIES:               NONE

START DATE:             JUNE 30 2014
START TIME:             1049 PM CDT
START LOCATION:         3.3 MILES EAST OF DE MOTTE IN
START LAT/LON:          41.1909/-87.2613

END DATE:               JUNE 30 2014
END TIME:               1056 PM CDT
END LOCATION:           4.9 MILES NORTHEAST OF DE MOTTE IN
END LAT/LON:            41.2240/-87.1138

SURVEY SUMMARY:
A 100-200 YARD SWATH OF CONSISTENT TREE DAMAGE...WITH NUMEROUS
SNAPPED TREES...BEGAN EAST-SOUTHEAST OF DE MOTTE BETWEEN N CR 1150
W AND N CR 1100 W JUST NORTH OF W CR 1200 N. THE DAMAGE CONTINUED
EAST-NORTHEAST JUST TO THE EAST AND THEN THROUGH THE CENTER OF DE
MOTTE NORTH OF 9TH STREET. JUST EAST OF DE MOTTE ALONG ORCHID
STREET...A BARN WAS COMPLETELY DESTROYED AND DOUBLE WIDE
MANUFACTURED HOME EXPERIENCED SOME STRUCTURAL AND/OR ROOF DAMAGE.
FURTHER NORTHEAST ALONG W CR 1450 N NEAR THE END OF THE DAMAGE
PATH...THERE WERE SNAPPED TREES...WOOD POWER POLES LEANING AND
DAMAGE TO TWO FARMSTEADS. ON ONE...THE DOORS COLLAPSED IN A POLE
BARN. IN ANOTHER POLE BARN...THE WALLS COLLAPSED AFTER THE ROOF
WAS BLOWN OFF. THE DAMAGE IN THIS TORNADO PATH WAS CONSISTENT WITH
MAXIMUM SPEEDS OF 100-105 MPH.

IT CANNOT BE CONCLUSIVELY RULED OUT THAT MORE THAN ONE TORNADO
TOUCHED DOWN ALONG THE 8 MILE LONG DAMAGE PATH.

NWS has confirmed that southeast of Lowell to northern Jasper County, straight-line winds of 85-110 mph occurred.

EF1 tornado with winds of 100-105 mph was embedded in the straight-line winds.

Wind damage in Pulaski County consistent with gusts of 60-85 mph.  The northern half of the county was hardest hit with damage similar to that of Marshall County, where winds were up to 85 mph

STORM REPORTS:

M86 mph  Lowell

E85 mph  Wheatfield

E80 mph Northside of Winamac

M70 mph  Morocco

Numerous Trees Down In the Northern Half of Pulaski County

Tree Limbs & Trees Down  Northwest Newton County

Barns & Farms Outbuildings Damaged/Destroyed Near Demotte

Numerous Trees & Powerlines Down In Demotte

Trees Down Near Grissom Air Reserve Base

2 Power Poles Snapped at the Base  Grissom Reserve Base

Trees & Power Lines Down Across Western Boone County

Several Farm Buildings Damaged/Destroyed in Western Boone County.

Power Poles Blown Onto 75 Near Advance

Large Tree Limb Blown Down Along 75 in Advance

M66 mph  Grissom Air Reserve Base

M64 mph  Winamac

Trees Down Near St. Joseph College

Extensive Wind Damage In Winamac:  Trees & Powerlines Down with Structural Damage

M61 mph  Kentland

Tree Limbs & TV Antennas Down In Kentland

E60 mph Ladoga

M59 mph  Fowler

E50 mph Between Attica & West Point

M48 mph  Attica

M45 mph  Rensselaer

M44 mph  Fulton County Airport

M43 mph  White County Airport

M41 mph  WLFI-TV

M40 mph  Northeast of Frankfort

____________________________________________________________________________________________________________________________________________________________________________

JULY 14, 2014 SQUALL LINE

With arrival of upper trough & surface cold front, band of multi-cell storms with a couple with embedded supercell features, gelled into a squall line with sporadic strong-severe gusts & some pea hail.

Surface CAPE was a bit less (today 2500 J/kg) than it had been in a few days, but dynamics were stronger with up to 40 kts. of shear, good convergence to form storms & steeper lapse rates.

5258

Images of the event:

14123512341511121315182831323435373840

Josh Raub sent this pic of minor siding damage in Lindbergh Village in West Lafayette.  Two other homes lost shingles.

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Other images of the storm/storm damage:

434241


Outlook to Late Next Week

July 14th, 2014 at 11:02 pm by under Chad's WLFI Weather Blog

Some patchy fog is possible tonight-early Tuesday morning with lows in the cool 50s.  If the wind would stay light/calm it would become locally-dense.

Tomorrow, it may start out sunny, but cumulus/stratocumulus will develop & pivot in from the northwest.  A few isolated showers are possible.

Highs will range from near 70 in the north & northeast to 75 in the south & southwest & 73 in the West Lafayette/Lafayette area.

With partly cloudy skies, lows will drop into the lower to middle 50s tomorrow night.

Wednesday will turn partly to mostly cloudy with cumulus/stratocumulus with highs in the lower to middle 70s, followed by 49-54 Wednesday night.

Thursday-Friday look mostly sunny & warmer with upper 70s & lower 80s, respectively.

Saturday looks good with 80s, but a hot, humid pattern with some scattered storms (storm cluster topping upper ridge?) Sunday-next Thursday.  Highs will run from around 90 to the lower 90s.  Potential exists for some of the hottest weather this summer.

A surface cold front may pass late next week with more organized storms & a shift of the upper ridge back west.  This may cool us back to the 80s.


2014 Severe Weather Events As of July 14

July 14th, 2014 at 9:53 pm by under Chad's WLFI Weather Blog

FEBRUARY 20, 2014 SEVERE EVENT

A QLCS squall line raced through largely our southern half on February 20 with damaging straight-line winds & one confirmed tornado.

Additionally, rapid snow melt from much warmer weather & rainfall caused flooding & significant ice jams on rivers & streams.

An ice jam on the Eel River in Cass County caused flooding with a few home evacuations.  Ice jam on Wildcat Creek has also caused back-up flooding, resulting in several home evacuations.

The Wabash had a 7-mile long ice jam in Carroll & Cass counties, backing up floodwater further in to Cass County.

Pipestone Creek on the Cass/Miami line had an ice jam with back-up flooding being reported.

Event images & NWS tornado survey (note: tornado is not on severe storm reports map, as it was confirmed after this map was made).

Tornado was a part of LEWP in the line with one signature southeast & east of Crawfordsville & another north of Crawfordsville.  The one southeast & east of Crawfordsville produced the tornado.

HSC

2521119

1192426

25

212023282131

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Track is based on radar data & NWS information:

1514

FGIH

IHBADI Map II

M

13

STORM REPORTS:

Hillsboro:  Small limbs down & shingles off home

Crawfordsville:  M61 mph

Tipton:  E65 mph

Atlanta:  M67 mph

Frankfort:  Semi overturned, leaking propane.  I-65 closed.

Northeast of Frankfort:  5 minutes of gusts of 50-52 mph.

Frankfort:  M55 mph

Kokomo:  M54 mph

Attica:  M50 mph

Covington:  M52 mph

Thorntown:  M62 mph

Burlington:  M51 mph

Logansport:  M58 mph

Montgomery County:  Several reports of shingles blown off homes.

_______________________________________________________

MAY 21, 2014 SUPERCELLS WITH LARGE HAIL & MICROBURST

The second severe weather event of the year struck today with hail to baseball size & one significant microburst.

Overnight, supercell/multi-cells gelled into an MCS that clipper our north/northeast.  Marble hail & gusty winds were reported in the morning in Cass, Miami counties.

The outflow boundary from these storms set up in the heart of the viewing area.  With nice northwest flow at mid & upper levels along with a very unstable, hot, juicy environment, supercells & multi-cells popped rapidly.  The high CAPE & steep lapse rates with shear from the stronger flow aloft made for lots of hail & a few minor to significant microbursts.

Storms also popped on the actual surface cold front.  As another core of stronger mid- & upper-flow helped to ignite these storms.

Eventually the cold front merged with the outflow boundary in the evening & as that even stronger flow arrived we had billiard ball to baseball hail in southeast Fountain & southwest Montgomery counties this evening.  Hail of up to softball size fell in eastern Illinois.

Tree limbs were reportedly downed near Kingman & Covington with 50 & 53 mph gusts.  An intense microburst around Lebanon caused tree damage & even toppled many large trees (one 3′ in diameter at breast height).  Power poles & line were also down.  In this 1.5- to 2-mile oval, winds may have gusted 70 to perhaps 75 mph.

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Images of the event:

357111023

Ryan Harber (West Lafayette):  Storm over Boone County as seen from West Lafayette…………..

John Mahoney (West of Frankfort on I-65):  Wall cloud on back side of supercell that produced 1.75″ hail & 50 mph gust in Clinton County……………..

Autumn McGregor (South of Pine Village):  Underbelly of severe storms over Vermillion & Parke counties this evening, showing the mammatus…………………….

Beth Mantle (Attica):  Underbelly of storm from Parke County showing mammatus……………………

Lyndsey Gayler (West Point):  Mammatus over West Point…………….

Ryan35789

_______________________________________________________________________

JUNE 18, 2014 LINE OF STORMS

A line of storms with a relatively narrow swath of wind damage passed through the area in the afternoon.  These overturned the airmass & gutted a lot of the surface instability for storms.  These storms did struggle due to capping (CINH) issues nudging in from Plains/western Corn Belt upper ridge.

However, central Illinois missed the storms & was highly-unstable, hot & humid in the evening with surface CAPE to 4500 J/kg.  This advected back in & although it was more elevated instability at first, the storms & instability became increasingly surface-based with time.  That, in combination with good downdraft CAPE & lake breeze front & a slightly-bowing line of storms passed through in the evening in the “Ring of Fire” or periphery of Plains & western Corn Belt upper ridging, capping & heat.

STORM REPORTS:

East of Morocco:  Powerlines down

East of Morocco:  E70 mph

Lake Village:  E60 mph

Northern Newton County:  Powerlines down & on fire

North of West Lafayette:  E60 mph

WLFI-TV:  M55 mph

Lake Cicott:  Trees down

White County:  Multiple trees down countywide

Burlington:  M60 mph

Kokomo:  M64 mph

Delphi:  Trees down on Tecumseh Bend Road

Peru:  Tree down on power lines

Northeast of Thorntown:  M51 mph (Report Missing In First Image)

117DMA Map II

Images of the event:

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311323533324241424551525755

Autumn McGregor:  Near Pine Village

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Pam Leonard:  Monticello

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__________________________________________________________________________

JUNE 30-JULY 1, 2014: TWO DERECHOS

A long-lived, long-track derecho raked areas just north of the viewing area during the late evening of Tuesday, June 30.  This did prompt Severe T’Storm Warning for far northern Jasper County at 9 p.m., but wind stayed just north of the Kankakee River.

Second derecho races east & southeastward, affecting area 11 p.m. to 2 a.m. on a very sultry, juicy night.   WLFI dew point hit 78.  Morocco dew point hit 79!

Storms raced southeastward between though they encountered CINH (capping) with southward progression & began to weaken.

However, they did produce gusts of 45-55 mph, even with weakening.  As they completely collapsed, extensive wind damage occurred in our far southeast & east & then in the Indianapolis area.

Aided by upper trough & ridge-riding shortwave, storms exploded on plume of very high surface CAPE in Illinois & Indiana, which had been capped all afternoon.  Surface CAPE reached 4500-5500 J/kg, which lingered after dusk & supported the severe threat.

Less capping (CINH) & more dynamics, but bit less CAPE brought the most widespread damaging winds to our northern & northwestern counties.

3

200101

18212331353738394041424546484952535659636465

Winamac Damage (from Betty & Teri):

234578111314

NWS Chicago has confirmed one EF1 tornado occurred in the June 30-July 1 derecho in our viewing area.

Embedded in the significant damaging straight-line winds, it appears a tornado (perhaps multiple tornadoes) occurred in northern Jasper County east & northeast of Demotte in an 8-mile path.

Below is image of velocity data as tornado was northeast of Demotte before lifting.  At this point, it was still likely as EF1.  Velocity data still indicated 95 mph winds at beam level about 4.5 miles northeast of Demotte at this time.

A tornado was also confirmed near Lowell.  You can see the signature of it in the second image.

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Tornadoes were confirmed in Kankakee & Will counties in Illinois.  However, extreme straight-line winds to 100 mph hit Morris, Illinois.

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Pics of the tornado damage are courtesy of NWS Chicago:

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TORNADO # 5 IN AND NEAR DEMOTTE INDIANA...

RATING:                 EF-1
ESTIMATED PEAK WIND:    100-105 MPH
PATH LENGTH /STATUTE/:  8.0 MILES
PATH WIDTH /MAXIMUM/:   200 YARDS
FATALITIES:             NONE
INJURIES:               NONE

START DATE:             JUNE 30 2014
START TIME:             1049 PM CDT
START LOCATION:         3.3 MILES EAST OF DE MOTTE IN
START LAT/LON:          41.1909/-87.2613

END DATE:               JUNE 30 2014
END TIME:               1056 PM CDT
END LOCATION:           4.9 MILES NORTHEAST OF DE MOTTE IN
END LAT/LON:            41.2240/-87.1138

SURVEY SUMMARY:
A 100-200 YARD SWATH OF CONSISTENT TREE DAMAGE...WITH NUMEROUS
SNAPPED TREES...BEGAN EAST-SOUTHEAST OF DE MOTTE BETWEEN N CR 1150
W AND N CR 1100 W JUST NORTH OF W CR 1200 N. THE DAMAGE CONTINUED
EAST-NORTHEAST JUST TO THE EAST AND THEN THROUGH THE CENTER OF DE
MOTTE NORTH OF 9TH STREET. JUST EAST OF DE MOTTE ALONG ORCHID
STREET...A BARN WAS COMPLETELY DESTROYED AND DOUBLE WIDE
MANUFACTURED HOME EXPERIENCED SOME STRUCTURAL AND/OR ROOF DAMAGE.
FURTHER NORTHEAST ALONG W CR 1450 N NEAR THE END OF THE DAMAGE
PATH...THERE WERE SNAPPED TREES...WOOD POWER POLES LEANING AND
DAMAGE TO TWO FARMSTEADS. ON ONE...THE DOORS COLLAPSED IN A POLE
BARN. IN ANOTHER POLE BARN...THE WALLS COLLAPSED AFTER THE ROOF
WAS BLOWN OFF. THE DAMAGE IN THIS TORNADO PATH WAS CONSISTENT WITH
MAXIMUM SPEEDS OF 100-105 MPH.

IT CANNOT BE CONCLUSIVELY RULED OUT THAT MORE THAN ONE TORNADO
TOUCHED DOWN ALONG THE 8 MILE LONG DAMAGE PATH.

NWS has confirmed that southeast of Lowell to northern Jasper County, straight-line winds of 85-110 mph occurred.

EF1 tornado with winds of 100-105 mph was embedded in the straight-line winds.

Wind damage in Pulaski County consistent with gusts of 60-85 mph.  The northern half of the county was hardest hit with damage similar to that of Marshall County, where winds were up to 85 mph

STORM REPORTS:

M86 mph  Lowell

E85 mph  Wheatfield

E80 mph Northside of Winamac

M70 mph  Morocco

Numerous Trees Down In the Northern Half of Pulaski County

Tree Limbs & Trees Down  Northwest Newton County

Barns & Farms Outbuildings Damaged/Destroyed Near Demotte

Numerous Trees & Powerlines Down In Demotte

Trees Down Near Grissom Air Reserve Base

2 Power Poles Snapped at the Base  Grissom Reserve Base

Trees & Power Lines Down Across Western Boone County

Several Farm Buildings Damaged/Destroyed in Western Boone County.

Power Poles Blown Onto 75 Near Advance

Large Tree Limb Blown Down Along 75 in Advance

M66 mph  Grissom Air Reserve Base

M64 mph  Winamac

Trees Down Near St. Joseph College

Extensive Wind Damage In Winamac:  Trees & Powerlines Down with Structural Damage

M61 mph  Kentland

Tree Limbs & TV Antennas Down In Kentland

E60 mph Ladoga

M59 mph  Fowler

E50 mph Between Attica & West Point

M48 mph  Attica

M45 mph  Rensselaer

M44 mph  Fulton County Airport

M43 mph  White County Airport

M41 mph  WLFI-TV

M40 mph  Northeast of Frankfort

____________________________________________________________________________________________________________________________________________________________________________

JULY 14, 2014 SQUALL LINE

With arrival of upper trough & surface cold front, band of multi-cell storms with a couple with embedded supercell features, gelled into a squall line with sporadic strong-severe gusts & some pea hail.

Surface CAPE was a bit less (today 2500 J/kg) than it had been in a few days, but dynamics were stronger with up to 40 kts. of shear, good convergence to form storms & steeper lapse rates.

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Images of the event:

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Josh Raub sent this pic of minor siding damage in Lindbergh Village in West Lafayette.  Two other homes lost shingles.

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Other images of the storm/storm damage:

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Storm Updates

July 14th, 2014 at 1:06 pm by under Chad's WLFI Weather Blog

6:55 p.m.

Investigated report of home with minor damage on south side of Lindbergh Village in West Lafayette.  Two homes lost shingles & one lost a bit of siding.

Photo of the home is from Josh Raub:

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5:30 p.m.

Watch has been cancelled.

Main area of storms have exited.  Some spotty showers/storms are popping on the actual surface cold front.  Although they will not be severe, a brief shower/storm is still possible this evening.

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4:30 p.m.

Severe threat will wind down by 5 p.m., but a few more scattered showers & t’storms may pop on the actual surface cold front this evening & pass through.

STORM REPORTS:

E60 mph  Northwest of Covington

E60 mph  Northeast of Veedersburg

M57 mph  Covington

M52 mph  WLFI-TV

M48 mph  Attica

E45 mph  East-Southeast of Bell Center

E45 mph  Northwest of Rochester

0.25″ Hail  East-Southeast of Bell Center

Trees & limbs reported down on the southside of Lafayette-Some on power lines.

Minor damage reported to home on the southside of Lindbergh Village in West Lafayette.

M39 mph  Crawfordsville

M32 mph  Jasper County Airport

M32 mph  White County Airport

M32 mph  Rensselaer

M31 mph  Frankfort

M31 mph  Cass County Airport

M29 mph  Twin Lakes High School

M25 mph  I-65 & Route 26 sensor

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4 p.m.

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3:30 p.m.

Gusts 50-60 mph possible Tippecanoe County.

Storms strengthening pretty much right on top of us.

Northeast of Veedersburg just gusted to 60 mph.

Covington had measured gust to 57 mph.

Northwest of Covington estimated gust of 60 mph has been reported.

We measured gust to 52 mph at WLFI.

East-Southeast of Bell Center just gusted to 45 mph with pea hail.

Rensselaer gusted to 32 mph on INDOT unit & Airport unit.

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3:20 p.m.

Spotter reported estimated gust of 60 mph northwest of Covington.  Convington sensor measured gust of 57 mph at 3:20 p.m.

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3:05 p.m.

Gust to 58 mph possible near Rensselaer to southwestern Pulaski County.

Gusts 55-65 mph in two cores over Warren County.

Pea to marble hail may accompany the gusts.

Wind gusted to 58 mph at Champaign Williard Airport & 59 mph at Sidney, Illinois (Champaign County).

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2:58 p.m.

Three wind cores may produce damaging winds in Warren County.

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2:48 p.m.

Severe T’Storm Warning for Warren & Fountain until 3:45 p.m.

Wind gust measured of 58 mph at Champaign Williard Airport.

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2:40 p.m.

Strong-severe gusts & pea & marble hail cores are seen in storms approaching/arriving.  Winds may gust to 51 mph in east-central Newton/west -central Jasper.  50-60 mph wind cores evident just west of state line.

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Band of storms (multi-cell cluster & one storm with supercell features) is approaching, while scattered storms Carroll to Montgomery counties have weakened.

100% hail near Champaign with size to 1″ & gust to 64 mph.

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Winds may gust 40-50 mph in storms over Newton & Jasper.  Storms In eastern Illinois are gusting as high as 64 mph with storm southwest of Champaign.  Gusts of 50-60 mph showing up near Rantoul.

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1:25 p.m.

T’Storm is moving through West Lafayette/Lafayette area with torrential rainfall, but downburst-type gusts.  Wind at station went from southwest-southwest gust to 32 mph to sudden, sharp gust to 41 mph from the southeast at the tail end of the storm.  No hail, but sheets of wind-blow/driven rain & poor visibility.

Storm is moving east-northeast.

Radar velocity shows this sharp, potent wind shift with gusts of 30-40 kts.

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1 p.m.

Severe T’Storm Watch has been issued by SPC.  This is in effect until 7 p.m.

Dynamics/lapse rates/CAPE support broken line/multi-cell clusters with embedded supercell features with surface cold front/upper trough passage.

Scattered downburst-type gusts/severe hail are the main threats.

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11:05 A.M. Update

July 14th, 2014 at 10:59 am by under Chad's WLFI Weather Blog

We are fair game for t’storm development from here on out through the afternoon as surface cold front & main upper trough approach & passes.

I cannot rule out a few severe gusts/hail given the better dynamics, as well as moderately unstable airmass as temperatures rise into the 80s.

Up to 45 kts. of shear, along with a pretty steep lapse rate & up to 2500 J/kg of surface CAPE, favors multi-cell clusters with embedded isolated supercells that may congeal to broken line of a few downburst-type gusts & hail of 1″ in diameter or a bit more.

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8:44 P.M. Update

July 13th, 2014 at 8:46 pm by under Chad's WLFI Weather Blog

Broken line of storms is sagging in from the northwest.  If they can hold together just long enough, they would make it into our northwest in 1-2 hours.  However, they continue to slowly weaken & loose any lightning they have with time.

Other storms south of here are bringing a nice display of cumulonimbus to our southern skies/southern horizon.

Scattered showers & t’storms are likely late morning to afternoon tomorrow as main surface cold front & upper trough swings through.  Highs will run in the mid 80s.  Main severe threat will run south of our area, but I cannot rule out a couple of isolated severe storms.

After sunny skies Tuesday morning with lows in the mid to upper 50s, cumulus will develop all over the Tuesday afternoon.  With northwest winds at 10-20 mph, highs will run in the 70s, followed by 50-55 Tuesday night & 70s Wednesday.  Highs Thursday look to run in the upper 70s after morning lows near 51, but a few areas may reach upper 40s in the far north & northeast.

We will be back to the 80s by Friday & Saturday.  Right now, both days look dry & mostly sunny.

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