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.
Track is based on radar data & NWS information:
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.
Images of the event:
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…………….
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.
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)
Images of the event:
Autumn McGregor: Near Pine Village
Pam Leonard: Monticello
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.
Winamac Damage (from Betty & Teri):
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.
Tornadoes were confirmed in Kankakee & Will counties in Illinois. However, extreme straight-line winds to 100 mph hit Morris, Illinois.
Pics of the tornado damage are courtesy of NWS Chicago:
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
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.
Images of the event:
Josh Raub sent this pic of minor siding damage in Lindbergh Village in West Lafayette. Two other homes lost shingles.
Other images of the storm/storm damage:
AUGUST 21, 2014 CLUSTER TO LINE OF STORMS (WITH LARGE HAILER ON TAIL END)
A cluster of storms quickly developed on the evening of August 21 just northwest of the viewing area at the junction of MCV & outflow boundary from morning MCS, storm quickly blew up in uncapped, highly unstable environment with up to 4500 J/kg of surface CAPE downstream.
The cluster assumed a more linear, organized bow shape with southeastward progression as cold pool developed (rain-cooled air forcing the storms forward & fanning them out into the bowing line). On its tail end, large hail fell, some of it up to full black walnut size (2.25″ diameter). Also, a brief, tightly-wound rotation signature was seen.
Precipitable water amounts were very high with dew points in the middle to even upper 70s. So, torrential rainfall accompanied the storms with a quick 2″ of rainfall in some areas, which resulted in flash flooding.
Images of the event as we were tracking the storms:
Damage, Hail & Sky Pics:
AUGUST 26-27, 2014 MACROBURSTS & LARGE HAIL