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Buchanan, MI Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Buchanan is about the same as Michigan average and is much lower than the national average. The risk of tornado damage in Buchanan is much higher than Michigan average and is much higher than the national average.

Topics:Earthquake IndexVolcano IndexTornado IndexOther Weather Extremes EventsVolcanos NearbyHistorical Earthquake EventsHistorical Tornado Events

Earthquake Index, #408

Buchanan, MI
0.01
Michigan
0.04
U.S.
1.81

The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.

Volcano Index, #1

Buchanan, MI
0.0000
Michigan
0.0000
U.S.
0.0023

The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.

Tornado Index, #135

Buchanan, MI
220.00
Michigan
140.33
U.S.
136.45

The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.

Other Weather Extremes Events

A total of 2,358 other weather extremes events within 50 miles of Buchanan, MI were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:6Cold:10Dense Fog:3Drought:1
Dust Storm:0Flood:182Hail:494Heat:3Heavy Snow:85
High Surf:0Hurricane:0Ice Storm:20Landslide:0Strong Wind:42
Thunderstorm Winds:1,368Tropical Storm:0Wildfire:0Winter Storm:62Winter Weather:14
Other:68 

Volcanos Nearby

No volcano is found in or near Buchanan, MI.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Buchanan, MI.

No historical earthquake events found in or near Buchanan, MI.

Historical Tornado Events

A total of 89 historical tornado events that had recorded magnitude of 2 or above found in or near Buchanan, MI.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
3.21979-04-12241°51'N / 86°23'W41°54'N / 86°20'W3.30 Miles60 Yards06250K0Berrien
5.11960-06-16241°50'N / 86°16'W003K0Berrien
5.21956-06-26241°49'N / 86°16'W0.10 Mile17 Yards000K0Berrien
8.41981-06-20241°57'N / 86°21'W1.50 Miles500 Yards00250K0Berrien
10.02001-10-24341°37'N / 86°26'W41°45'N / 86°18'W15.00 Miles1320 Yards123.0M0St. Joseph
 Brief Description: This tornado touched down just southwest of Crumstown in St Joseph county Indiana and moved northeast into Berrien county Michigan (see Storm Data for Michigan, Extreme Southwest for more information on the end portion of this tornado). In St Joseph county Indiana the most significant damage was across Crumstown, where F3 damage with a path width up to 3/4 mile occurred. The tornado then moved to near the Michiana Regional Airport and across the Indiana Turnpike causing F0-F1 damage. Two men were injured northwest of South Bend. One man later died from his injuries. The tornado moved into Berrien county Michigan 6 miles NNW of South Bend.
10.71962-04-30341°40'N / 86°31'W41°42'N / 86°04'W23.10 Miles33 Yards049250K0St. Joseph
11.21972-06-14241°58'N / 86°29'W41°59'N / 86°26'W1.30 Miles70 Yards003K0Berrien
11.21965-11-26341°42'N / 86°30'W1.00 Mile70 Yards00250K0St. Joseph
11.42010-06-05241°58'N / 86°30'W41°59'N / 86°26'W3.00 Miles200 Yards00150K0KBerrien
 Brief Description: EVENT NARRATIVE: A survey of the area between Baroda and Stevensville indicated damage consistent with a tornado. The damage started on Marrs Road, just west of Stevensville-Baroda Road. and continued east-northeast. The damage started with a travel trailer being thrown and destroyed as well as some tree damage. The circulation tracked mainly over open fields until reaching an area of homes on Lincoln Ave where the entire roof was ripped off a home (DI: FR12, DOD: 6) and another home suffered slightly less roof damage. The circulation continued northeast, crossing Hollywood Road, north of Linco Road. Several one year old 24 inch diameter power poles were snapped (DI: ETL; DOD 4). In addition, a harrow and trailer were thrown from a barn roughly 150 to 200 yards into a field. The circulation appears to dissipate north of Linco Road, on Scottdale Road. The tornado was roughly 200 yards wide at its peak. Maximum winds are estimated at around 125 mph. EPISODE NARRATIVE: A warm front worked north towards lower Michigan during the evening hours of the 5th. Storms were initially slow to organize, but quickly intensified and became super cellular as they moved off Lake Michigan. A combination of tornadoes and micro bursts were found in surveys across Berrien, Cass and St. Joseph counties.
12.71980-06-28241°40'N / 86°15'W002.5M0St. Joseph
13.11976-03-04241°57'N / 86°34'W42°05'N / 86°13'W20.00 Miles100 Yards09250K0Berrien
13.31998-08-25241°51'N / 86°14'W41°47'N / 85°59'W9.00 Miles800 Yards00500K0Cass
 Brief Description: ONE MOBILE HOME WAS COMPLETELY DEMOLISHED ON SOUTH SIDE OF JUNO LAKE AND SEVERAL OTHER HOMES AROUND JUNO, PAINTER, EAGLE AND CHRISTAN LAKE SUFFERED MINOR TO MODERATE STRUCTURAL DAMAGE. AN RV WAS TOSSED ABOUT AND ROTATED 180 DEGREES WHICH CAUSED MAJOR DAMAGE. NUMEROUS TREES WERE COMPLETELY FLATTENED WHICH ALSO CAUSED DAMAGE TO HOMES. MANY ROADS WERE BLOCKED BY FALLEN TREES...SNAPPED POWER POLES AND DOWNED POWER LINES. THIS TORNADO BEGAN IN NILES AND PEAKED IN INTENSITY AND WIDTH 3 MILES NORTHWEST OF EDWARDSBURG WHERE IT WIDENED OUT TO ONE HALF MILE. IT CONTINUED ON TOWARD THE TOWN OF BRISTOL IN NORTHEAST ELKHART COUNTY BEFORE LIFTING.
14.21976-03-12241°46'N / 86°43'W41°52'N / 86°34'W10.10 Miles83 Yards0025K0Berrien
14.71967-04-21242°01'N / 86°30'W1.00 Mile27 Yards00250K0Berrien
15.71974-06-20242°03'N / 86°18'W0.80 Mile100 Yards0025K0Berrien
16.41958-05-31241°40'N / 86°36'W1.00 Mile33 Yards0225K0La Porte
17.31961-03-04241°46'N / 86°45'W41°50'N / 86°39'W6.50 Miles440 Yards00250K0Berrien
17.51958-06-24241°45'N / 86°07'W41°45'N / 85°58'W7.30 Miles33 Yards0025K0St. Joseph
17.92010-06-05241°57'N / 86°05'W41°57'N / 86°02'W3.00 Miles200 Yards00100K0KCass
 Brief Description: EVENT NARRATIVE: After leaving behind a swath of microburst winds, the storm intensified with a tornado touching down about a half mile southwest of Southwestern Michigan College, near Dowagiac. The circulation initially impacted the Pokagan subdivision with numerous homes suffering varying degrees of damage (DI: FR12 DOD: 4). The circulation continued east-southeast through mainly open and wooded areas, severely damaging numerous trees. The most extensive tree damage occurred near Michigan 62, west of Twin Lake Road where a 600 yard wide area of trees suffered extensive damage. The circulation was likely embedded within a much larger area of rear flank downdraft winds. The circulation then turned more southeast and hit a cemetery on Michigan 62, south of Cass Street. The circulation quickly dissipated after this point. Maximum winds are estimated at around 115 mph. EPISODE NARRATIVE: A warm front worked north towards lower Michigan during the evening hours of the 5th. Storms were initially slow to organize, but quickly intensified and became super cellular as they moved off Lake Michigan. A combination of tornadoes and micro bursts were found in surveys across Berrien, Cass and St. Joseph counties.
18.32001-10-24241°39'N / 86°08'W41°42'N / 86°01'W4.50 Miles1320 Yards001.3M0St. Joseph
19.41992-07-13242°02'N / 86°10'W42°04'N / 86°06'W4.00 Miles80 Yards025250K0Cass
19.81986-06-19241°55'N / 86°00'W1.30 Miles700 Yards002.5M0Cass
19.81965-04-11441°35'N / 86°12'W41°37'N / 86°04'W6.90 Miles333 Yards0270K0St. Joseph
20.01979-06-07242°05'N / 86°11'W2.00 Miles60 Yards0125K0Van Buren
20.41954-06-12241°34'N / 86°11'W003K0St. Joseph
22.61957-03-14241°39'N / 86°44'W003K0La Porte
22.61965-04-11341°29'N / 86°17'W41°35'N / 86°04'W12.90 Miles250 Yards32725.0M0St. Joseph
22.81962-04-30341°42'N / 86°04'W41°46'N / 85°49'W13.40 Miles33 Yards00250K0Elkhart
23.61965-04-11341°35'N / 86°04'W41°38'N / 85°58'W5.60 Miles250 Yards00250K0Elkhart
24.71967-10-24241°35'N / 86°01'W003K0Elkhart
26.31976-03-12341°41'N / 86°56'W41°37'N / 86°42'W12.60 Miles200 Yards07250K0La Porte
26.42001-10-24241°26'N / 86°54'W41°40'N / 86°32'W33.00 Miles1760 Yards10750K0La Porte
26.71965-04-11341°24'N / 86°28'W41°29'N / 86°17'W10.70 Miles250 Yards32825.0M0Marshall
27.41960-05-21241°34'N / 86°46'W003K0La Porte
27.61956-05-09242°12'N / 86°10'W1.00 Mile33 Yards0025K0Van Buren
27.71958-05-31241°43'N / 86°53'W00250K0La Porte
28.01965-04-11441°37'N / 86°04'W41°43'N / 85°40'W21.60 Miles333 Yards312520K0Elkhart
28.41965-04-11441°31'N / 86°04'W41°42'N / 85°44'W21.20 Miles33 Yards312520K0Elkhart
29.31980-07-05241°43'N / 85°49'W00250K0Elkhart
30.01976-03-04242°05'N / 86°13'W42°15'N / 85°47'W24.80 Miles100 Yards00250K0Van Buren
30.21988-10-16241°28'N / 86°00'W41°33'N / 85°56'W6.00 Miles40 Yards002.5M0Elkhart
31.41964-04-28241°27'N / 85°59'W41°30'N / 85°59'W3.40 Miles100 Yards02250K0Elkhart
31.51976-03-12341°42'N / 86°58'W41°41'N / 86°56'W00250K0Porter
32.41965-04-11341°21'N / 86°35'W41°24'N / 86°28'W6.40 Miles250 Yards42725.0M0Starke
32.71958-07-29241°23'N / 86°35'W0025K0Starke
32.71965-09-14241°23'N / 86°35'W00250K0Starke
32.81965-04-11341°24'N / 86°55'W41°30'N / 86°35'W18.30 Miles33 Yards0025.0M0La Porte
33.11961-06-13241°21'N / 86°20'W003K0Marshall
33.21964-04-28241°26'N / 85°59'W41°27'N / 85°59'W1.10 Miles100 Yards000K0Kosciusko
33.22007-10-18341°26'N / 86°00'W41°30'N / 85°53'W7.00 Miles880 Yards0011.0M0KElkhart
 Brief Description: EVENT NARRATIVE: The tornado continued northeast out of Kosciusko County into the southeast side of Nappanee where the most extensive damage occurred. The width of the tornado decreased to one quarter mile and intensified just south of US-6 and County Road 7 as wind speeds increased to around 165 mph, in the upper range of the EF3 rating. The tornado went through an area populated by homes, restaurants, convenience stores and 3 RV plants, all of which sustained varying degrees of damage. Local officials reported that 459 buildings were damaged. Of these, 352 were homes with 52 of those being destroyed or uninhabitable. 81 businesses were damaged and 26 destroyed. A few minor injuries were also reported, mainly from people trapped in some of the houses and a few businesses. The tornado continued into the Blackstone subdivision where numerous homes were damaged or destroyed. The tornado continued to west of New Paris near the intersection of County Roads 46 and 17 where it lifted. Numerous vehicles of all varieties sustained severe damage. Damage is estimated around $11 million. EPISODE NARRATIVE: A combination of strong dynamics, wind shear, and rapid low level moisture return all combined to produce severe weather across much of Northern Indiana. One of several supercell thunderstorms produced a long tracked tornado which reached the high end of EF3.
33.41953-05-17241°47'N / 85°46'W41°51'N / 85°40'W6.40 Miles33 Yards003K0St. Joseph
34.12007-10-18241°23'N / 86°02'W41°26'N / 86°00'W5.00 Miles880 Yards003.0M0KKosciusko
 Brief Description: EVENT NARRATIVE: The tornado continued tracking northeast from Marshall county into extreme northwestern Kosciusko county. 116 structures were reported to have some sort of damage. 17 homes were destroyed, 6 suffered major damage and 17 minor damage. A horse was killed in a barn that was destroyed. Damage estimated around 3 million dollars. EPISODE NARRATIVE: A combination of strong dynamics, wind shear, and rapid low level moisture return all combined to produce severe weather across much of Northern Indiana. One of several supercell thunderstorms produced a long tracked tornado which reached the high end of EF3.
34.31976-03-20241°19'N / 86°15'W41°24'N / 86°03'W11.60 Miles77 Yards010250K0Marshall
34.71980-05-13342°13'N / 86°13'W42°18'N / 85°49'W21.00 Miles300 Yards0152.5M0Van Buren
35.01976-03-12341°17'N / 86°39'W41°24'N / 86°28'W12.10 Miles40 Yards0425K0Starke
36.32007-10-18241°18'N / 86°10'W41°23'N / 86°02'W8.00 Miles440 Yards00600K0KMarshall
 Brief Description: EVENT NARRATIVE: The tornado touched down near the intersection of 12B and Gumwood Roads, just west of Bourbon. Initial damage comprised of damage to shingles on a few roofs as well as some tree damage. As the tornado moved northeast and intensified it blew down a 3/8 mile long stretch of power poles. A total of 16 homes suffered damage from the tornado, 3 were destroyed, 1 suffered major damage and 12 suffered minor damage. Some barns, storage sheds, silos and garages suffered damage of varying degrees as well. The tornado reached the higher end of EF2 as it entered into Kosciusko County. A Bourbon Fire Department grass truck crashed into a ditch during the storm, with the driver being taken to the hospital for unknown injuries. It is not known as to why the crash occurred. 3 other non-specific minor injuries were reported. Damage is estimated at around $600,000. EPISODE NARRATIVE: A combination of strong dynamics, wind shear, and rapid low level moisture return all combined to produce severe weather across much of Northern Indiana. One of several supercell thunderstorms produced a long tracked tornado which reached the high end of EF3.
37.52009-08-19241°36'N / 87°04'W41°39'N / 87°01'W4.00 Miles60 Yards001.5M0KPorter
 Brief Description: EVENT NARRATIVE: A tornado touched down in southern Chesterton east of 11th Street and southwest of South Park Drive. The tornado quickly intensified as it moved to the northeast and caused the partial collapse of a gymnasium roof at the Chesterton Junior High School. A wind gust to 105 mph was measured by an anemometer near the school. This damage along with numerous trees that were either uprooted or sheared off was caused by tornado winds reaching 110 mph. The tornado was rated EF1 at this point with a path width of 40 yards. The tornado continued to track to the northeast across the New York Central railroad tracks toward Grant Avenue where the roof of a warehouse had been peeled off and thrown about 15 yards behind the building to the north. The tornado continued to the northeast where an apartment building on Brown Avenue lost its entire roof. This damage was caused by tornado winds reaching 120 mph. The tornado damage was rated EF2 through this area with a path width of 60 yards. In the city of Chesterton, 211 structures sustained damage; 8 were completely destroyed; 54 suffered major damage, such as trees falling through roofs. The remaining 149 structures sustained damage such as missing shingles or damaged gutters. Multiple vehicles were damaged by falling debris from buildings or trees. Numerous power lines were blown down along with utility poles blown down or snapped. This EF2 damage continued northeast where an entire field of healthy old hardwood tree trunks were snapped off or uprooted. The tornado then started to slightly weaken as it approached the Interstate 94 eastbound exit/westbound entrance ramps at Indiana Highway 49. A home south of the interstate had a garage roof blown off with still numerous trees uprooted or sheared off. Tornado wind speeds here were estimated at 100 mph with an EF1 rating. Similar tree damage was noted along a path that continued to go to the northeast across Highway 49 and toward Highway 20 near Hadenfelt Road where some aluminum roofing material of a storage facility had been peeled off. Tornado wind speeds were estimated at 95 mph here and was rated EF1 with a path width of 30 yards. The tornado continued to move through a heavily forested area in the Indiana Dunes National Lakeshore, eventually crossing Highway 12. Radar imagery and an aerial survey suggests that the tornado dissipated north of Highway 12. EPISODE NARRATIVE: Strong to severe thunderstorms moved across parts of northwest Indiana during the late afternoon and evening hours of August 19th, producing one tornado in Chesterton.
37.91965-04-11441°37'N / 85°42'W41°38'N / 85°40'W00250K0Elkhart
37.91954-05-31242°18'N / 86°12'W42°24'N / 86°04'W9.30 Miles33 Yards00250K0Van Buren
38.11956-04-03342°16'N / 86°08'W42°23'N / 85°57'W12.00 Miles200 Yards092.5M0Van Buren
38.11986-09-29242°12'N / 85°51'W42°12'N / 85°47'W3.80 Miles400 Yards01250K0Van Buren
38.41968-06-23241°18'N / 86°36'W0025K0Starke
40.42010-06-05241°49'N / 85°41'W41°46'N / 85°29'W11.00 Miles200 Yards00300K0KSt. Joseph
 Brief Description: EVENT NARRATIVE: A survey of damage across southern St. Joseph county was performed by NWS Personnel. The damage found indicates that a circulation touched down over an open field north of Miller Road and west of Blue School Road. The tornado initially struck two barns, destroying them and sending the debris several miles downwind. The tornado then picked up a trailer at a local Port-A-Jon business. It appears that a combination of the strong winds and the trailer striking one of the guy wires, resulted in a 350 foot cell tower being blown down into an adjacent tower, causing the failure of both (DI: FST DOD:2). The tornado then continued across mainly open fields, scouring a 200 yard wide area of corn, just to the east-southeast of the cell towers and several trees along its track. The final damage occurred at a residence where minor roof damage was done to a barn, as well as more focused tree damage and a center pivot irrigation system being flipped. The tornado reached a maximum of roughly 200 yards in width and was on the ground for over 10 miles. Maximum winds are estimated at around 125 mph. EPISODE NARRATIVE: A warm front worked north towards lower Michigan during the evening hours of the 5th. Storms were initially slow to organize, but quickly intensified and became super cellular as they moved off Lake Michigan. A combination of tornadoes and micro bursts were found in surveys across Berrien, Cass and St. Joseph counties.
40.81965-04-11441°43'N / 85°40'W41°45'N / 85°30'W8.50 Miles333 Yards5420K0Lagrange
41.01989-05-30242°24'N / 86°12'W42°25'N / 86°11'W1.00 Mile100 Yards00250K0Van Buren
41.61954-06-01241°14'N / 86°14'W003K0Marshall
41.91989-05-30242°23'N / 86°02'W1.00 Mile50 Yards0025K0Van Buren
42.41976-03-12241°38'N / 85°38'W41°44'N / 85°30'W9.30 Miles100 Yards09250K0Lagrange
44.71974-04-03441°12'N / 86°03'W41°25'N / 85°39'W25.40 Miles33 Yards1390K0Kosciusko
44.81956-08-12341°14'N / 86°15'W41°10'N / 86°03'W11.10 Miles800 Yards01250K0Marshall
45.21967-10-24241°26'N / 85°40'W05250K0Kosciusko
45.61956-04-03342°23'N / 85°57'W42°26'N / 85°56'W2.30 Miles200 Yards002.5M0Van Buren
45.81955-07-06241°55'N / 85°29'W003K0St. Joseph
46.21989-05-30242°25'N / 86°11'W42°32'N / 86°05'W9.20 Miles100 Yards00250K0Allegan
46.61974-04-03441°25'N / 85°39'W41°26'N / 85°38'W000K0Elkhart
47.01974-04-03441°10'N / 86°06'W41°12'N / 86°03'W1.90 Miles33 Yards000K0Marshall
47.41965-04-11441°38'N / 85°40'W41°44'N / 85°16'W21.60 Miles177 Yards5412.5M0Lagrange
47.41956-04-03241°07'N / 86°23'W41°10'N / 86°19'W4.10 Miles50 Yards0025K0Fulton
47.41956-04-03241°38'N / 85°29'W003K0Lagrange
47.51965-04-11341°21'N / 87°12'W41°24'N / 86°55'W14.80 Miles33 Yards0025.0M0Porter
47.61977-06-30241°31'N / 87°16'W41°33'N / 87°08'W6.80 Miles300 Yards012.5M0Lake
47.91967-10-24341°33'N / 87°13'W0025K0Porter
48.01976-03-12241°29'N / 87°13'W41°32'N / 87°10'W3.30 Miles33 Yards003K0Porter
48.31974-04-03441°26'N / 85°38'W41°35'N / 85°26'W14.40 Miles33 Yards1240K0Noble
49.11961-07-23341°20'N / 85°41'W0325K0Kosciusko
49.12009-06-19242°28'N / 86°00'W42°28'N / 85°53'W6.00 Miles400 Yards000K0KAllegan
 Brief Description: EVENT NARRATIVE: Damage to both trees and structures were found along the tornado path. A Circa 1940 pole barn was destroyed and numerous trees were snapped or uprooted just over a half a mile west of Chicora north of 108th Avenue. Further down the tornado's path, garage doors were blown out and carried 300 yards while two boats were blown out of the garage. The house suffered 80% shingle loss with one 2-foot diameter hole in the roof on the home's west side. This was approximately 0.35 miles north of Chicora. The most extensive damage occurred approximately one mile northeast of Chicora along 42nd Street. A roof was partially torn off of a house. A barn was blown about 20-feet off of its foundation. There were several telephone poles snapped with wires wrapped around a tree. A roof was ripped off a small unoccupied house with one wall collapsed. Debris was lofted up to one-half mile across a field. More shingle loss was found on the west side of a home located two-miles northeast of Chicora. Nearly 80% shingle loss was witnessed. Several utility poles were snapped with widespread tree damage through the area. More damage to a home was observed about a quarter-mile west of Schermerhorn Lake. The damage happened when numerous falling trees crushed it. One-quarter mile of 39th street was blocked by fallen trees. The trees were piled up to 15-feet deep on the road. As the tornado was weakening, a 30-foot metal tower was bent over half way up. This was located near the intersection of 37th Street and 109th Avenue. Minor roof damage was also noted to a home in this area. EPISODE NARRATIVE: Thunderstorms developed and moved across Lake Michigan during the evening hours on June 19th. Several hours of intense rainfall occurred starting around 7:00 PM EST. The ground was already saturated from early morning thunderstorms that produced very heavy rainfall. In addition to the heavy rain, severe thunderstorms and tornadoes accompanied the thunderstorms.
49.11951-06-21341°07'N / 86°25'W41°07'N / 86°21'W2.70 Miles1760 Yards022.5M0Fulton
49.31951-06-21341°07'N / 86°29'W41°07'N / 86°25'W2.70 Miles1760 Yards022.5M0Pulaski
49.81998-06-11241°06'N / 86°40'W41°09'N / 86°30'W9.00 Miles100 Yards011.0M100KPulaski
 Brief Description: 4 TRAILER HOMES DESTROYED, SEVERAL OTHERS SUFFERED MINOR TO MAJOR DAMAGE, ONE HOME AND BARN DESTROYED, SEVERAL OTHER HOMES SUFFERED MODERATE DAMAGE. TORNADO STARTED IN RIPLEY AND TRACKED EAST NORTHEAST TO MONTEREY BEFORE IT LIFTED. EXTENSIVE TREE DAMAGE OCCURRED ALONG THE TORNADOES PATH. Synoptic and mesoscale conditions for June 11, 1998... Morning sfc and upper air analysis revealed a potent upper short wave trough across North Dakota with an intensifying area of sfc low pressure across southwest Kansas. An unseasonably strong 140 knot jet streak was ejecting out of this trough across Kansas with the left front exit region progged into central Indiana after 18Z. Increasing moisture convergence and theta-e advection along the northward lifting warmfront was seen as 850 mb winds were forecast to increase to 55 knots. By 21Z, the sfc low had moved into eastern Iowa and deepened to 994 mb. The prestorm enviornment was characterized by moderate to extreme instability (LI values -7 to -9 and CAPE values in excess of 2000 J/kg) with temperatures in the lower 80s and dewpoints in the low/mid 70s. This combined with a dry punch at 700mb and deep layer shear along the warm front, where storm relative helicity values increased to 400 M2/S2, lay the foundation for an outbreak of damaging tornadoes across Indiana.


* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.


 
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