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Johnson County Natural Disasters and Weather Extremes

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

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

Earthquake Index, #77

Johnson County
0.00
Missouri
0.70
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

Johnson County
0.0000
Missouri
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, #34

Johnson County
216.98
Missouri
214.01
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 16,781 other weather extremes events within 50 miles of Johnson County were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:16Cold:70Dense Fog:51Drought:51
Dust Storm:0Flood:2,055Hail:7,640Heat:117Heavy Snow:97
High Surf:0Hurricane:0Ice Storm:75Landslide:0Strong Wind:108
Thunderstorm Winds:5,867Tropical Storm:0Wildfire:12Winter Storm:204Winter Weather:92
Other:326 

Volcanos Nearby

No volcano is found in or near Johnson County.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Johnson County.

No historical earthquake events found in or near Johnson County.

Historical Tornado Events

A total of 81 historical tornado events that had recorded magnitude of 2 or above found in or near Johnson County.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
8.92003-05-04238°38'N / 94°07'W38°44'N / 93°47'W18.00 Miles100 Yards001K0Johnson
 Brief Description: This is the Cass county tornado which entered Johnson county in open country around Latour. Reported by a trained spotter. tornado intermittently touched down for the next 18 miles in mainly open country. A dry line moved into eastern Kansas on the afternoon of May 4th. Severe thunderstorms quickly erupted in the mid afternoon hours and marched east northeast into Missouri. Several of the severe thunderstorms became tornadic. A supercell thunderstorm produced 4 seperate tornadoes over the northland of Kansas City. The strongest tornadoes reached F4 in intensity and moved over southern portions of Platte and Clay counties. In Platte county 14 buildings were destroyed, 43 suffered major damage and 149 had minor damage. There were no fatalities or injuries and total damage was estimated at $33.95 million dollars. In Clay county total damages were estimated at $91 million dollars. Several hundred homes were either destroyed or had major or minor damage. No fatalities were observed but there were 19 injuries. This was the most significant tornado outbeak in the Kansas City Metropolitan area, since the Pleasant Hill Missouri outbreak in 1977.
9.81969-04-04238°43'N / 93°59'W0.30 Mile150 Yards01250K0Johnson
10.11964-04-12238°34'N / 93°46'W38°41'N / 93°38'W10.70 Miles100 Yards13250K0Johnson
11.51968-05-15238°53'N / 93°46'W38°55'N / 93°41'W4.50 Miles50 Yards0025K0Johnson
12.92006-03-12238°36'N / 93°40'W38°42'N / 93°32'W12.00 Miles200 Yards042.0M0Johnson
 Brief Description: Tornado touched down at 2040 CST 2 miles northeast of Leeton...producing F0 damage along PP Highway. As it moved northeast...additional F0 to F1 damage was noted to a farmstead along SE 650th Road. The most intense F2 damage was noted along Y Highway just east of Highway 23...where several homes suffered F2 damage. The tornado crossed into Pettis county at 2057 CST...1.5 miles southeast of Whiteman Air Force Base.
13.41968-05-15238°50'N / 94°03'W38°53'N / 93°58'W5.20 Miles200 Yards02250K0Johnson
14.71968-05-15238°55'N / 93°41'W38°56'N / 93°38'W1.90 Miles50 Yards0025K0Johnson
16.12006-03-12238°43'N / 93°31'W38°44'N / 93°30'W0.80 Mile200 Yards0000Pettis
 Brief Description: F2 tornado crossed from Johnson county into Pettis county at 2057 CST and quickly dissipated. No significant damage was observed as the tornado moved over rural areas.
18.01961-07-22238°50'N / 94°08'W38°51'N / 94°06'W1.30 Miles133 Yards0025K0Jackson
19.11968-05-15238°56'N / 93°38'W39°00'N / 93°33'W5.90 Miles50 Yards0025K0Johnson
19.22006-03-12238°28'N / 94°04'W38°33'N / 93°55'W11.00 Miles450 Yards113500K0Henry
 Brief Description: Tornado crossed into Henry county at 2007 CST from Cass county. The tornado produced occasional F2 damage before dissipating 3 miles east southeast of Blairstown at 2025 CST. There was one fatality where a man died after the house was destroyed. M54PH
19.91958-06-13238°59'N / 93°36'W38°57'N / 93°32'W4.10 Miles440 Yards00250K0Lafayette
20.81973-04-19438°32'N / 93°32'W10.00 Miles880 Yards0525K0Henry
21.61964-04-12338°52'N / 94°13'W38°54'N / 94°07'W5.40 Miles100 Yards002.5M0Jackson
23.02003-05-04238°35'N / 94°13'W38°36'N / 94°09'W4.00 Miles100 Yards00200K0Cass
 Brief Description: Tornado briefly touched down at Highway 7 and County Road Z interchange. No damage and was reported by storm chaser. Tornado touched back down just north of the interchange, and then continued intermittently for 4 miles to the Johnson county line around Latour, near the inersection of Routes 2 and 131. A dry line moved into eastern Kansas on the afternoon of May 4th. Severe thunderstorms quickly erupted in the mid afternoon hours and marched east northeast into Missouri. Several of the severe thunderstorms became tornadic. A supercell thunderstorm produced 4 seperate tornadoes over the northland of Kansas City. The strongest tornadoes reached F4 in intensity and moved over southern portions of Platte and Clay counties. In Platte county 14 buildings were destroyed, 43 suffered major damage and 149 had minor damage. There were no fatalities or injuries and total damage was estimated at $33.95 million dollars. In Clay county total damages were estimated at $91 million dollars. Several hundred homes were either destroyed or had major or minor damage. No fatalities were observed but there were 19 injuries. This was the most significant tornado outbeak in the Kansas City Metropolitan area, since the Pleasant Hill Missouri outbreak in 1977.
23.62006-03-12238°56'N / 93°27'W38°55'N / 93°25'W3.00 Miles150 Yards0000Pettis
 Brief Description: Tornado touched down at 2007CST...5 miles west-northwest of Houstonia and moved into Saline county 3 miles west-northwest of Houstonia at 2009 CST. Tornado was over rural areas with no significant damage noted.
23.71964-04-12338°50'N / 94°14'W38°52'N / 94°13'W1.30 Miles100 Yards002.5M0Jackson
24.11961-07-22238°58'N / 93°30'W38°58'N / 93°25'W4.10 Miles200 Yards00250K0Saline
24.61964-04-12338°46'N / 94°17'W38°50'N / 94°14'W5.20 Miles100 Yards1102.5M0Cass
25.01977-05-04339°00'N / 93°55'W39°12'N / 93°30'W26.20 Miles100 Yards152.5M0Lafayette
26.62006-03-12238°25'N / 94°08'W38°28'N / 94°05'W5.00 Miles450 Yards0075K0Cass
 Brief Description: Tornado crossed from Bates county into Cass county...6 miles south-southwest of Creighton at 2005 CST. It moved northeast and exited Cass county into Henry county at 2007 CST...2 miles south of Creighton. F1 damage to several structures was noted.
26.61952-05-22238°54'N / 94°16'W38°56'N / 94°14'W1.30 Miles440 Yards01250K0Jackson
26.81973-05-01239°06'N / 93°36'W0.50 Mile50 Yards003K0Lafayette
27.01973-04-20338°27'N / 93°28'W38°34'N / 93°21'W10.10 Miles100 Yards00250K0Benton
27.31977-05-04338°38'N / 93°24'W38°43'N / 93°13'W11.20 Miles700 Yards02425.0M0Pettis
28.12003-05-09239°05'N / 93°37'W39°08'N / 93°31'W9.00 Miles300 Yards00500K0Lafayette
 Brief Description: Tornado reported near Corder and tracked northeast into Saline county. destoyed a machine shed, house with grain bins damaged along with a dairy barn.
28.81980-05-12338°40'N / 93°25'W38°44'N / 93°08'W15.80 Miles300 Yards02325.0M0Pettis
28.91964-04-12338°42'N / 94°24'W38°46'N / 94°17'W7.60 Miles100 Yards002.5M0Cass
29.41956-12-04238°16'N / 93°56'W38°23'N / 93°51'W9.10 Miles33 Yards0225K0Henry
30.21952-08-21238°41'N / 93°16'W38°42'N / 93°14'W1.30 Miles300 Yards11325.0M0Pettis
31.11965-09-20239°03'N / 93°34'W39°12'N / 93°25'W13.00 Miles100 Yards003K0Lafayette
31.61973-04-20338°25'N / 93°24'W5.00 Miles50 Yards003K0Pettis
32.11977-05-04338°28'N / 94°31'W38°48'N / 94°15'W27.10 Miles500 Yards21525.0M0Cass
32.31965-05-26238°58'N / 94°21'W39°01'N / 94°17'W4.90 Miles500 Yards04250K0Jackson
32.81965-09-20238°54'N / 94°23'W1.50 Miles30 Yards00250K0Jackson
33.42006-03-12238°37'N / 93°17'W38°40'N / 93°07'W11.20 Miles500 Yards162.5M0Pettis
 Brief Description: F2 tornado touched down 6.5 miles east of Green Ridge at 1612 CST and moved northeast. The tornado caused the death of one woman...when the trailer she was fleeing was blown on top of her. Another 6 people were injured as well. Numerous homes suffered varying degrees of damage. The tornado lifted one mile southwest of Smithton at 1625 CST. F39MH
33.62003-05-09239°10'N / 93°29'W39°09'N / 93°28'W1.00 Mile300 Yards0000Saline
 Brief Description: Tornado entered Saline county from Lafayette county and promptly dissipated in open country.
33.71973-04-20238°42'N / 93°11'W2.00 Miles50 Yards082.5M0Pettis
34.01982-05-20238°25'N / 94°19'W38°27'N / 94°16'W3.00 Miles100 Yards00250K0Bates
34.41967-01-24339°06'N / 94°15'W39°10'N / 94°10'W6.20 Miles200 Yards002.5M0Jackson
34.81956-12-04238°20'N / 94°14'W38°21'N / 94°09'W4.50 Miles200 Yards0225K0Bates
35.01973-04-20238°32'N / 93°13'W2.00 Miles33 Yards00250K0Benton
35.52006-03-12238°57'N / 93°23'W39°08'N / 93°09'W17.00 Miles150 Yards063.0M0Saline
 Brief Description: Tornado crossed into Saline county from Pettis county at 2009 CST. The tornado crossed over Interstate 70 at mile marker 71 at 2012 CST. Six people seeking shelter under a highway overpass were injured. Their cars were crushed when a semi was blown over on top of them. The tornado produced F2 damage just northeast of I-70 where several houses lost their roofs and a church was destroyed. The tornado continued northeast over rural areas and dissipated 3 miles east of Marshall at 2035 CST.
35.51951-07-08239°13'N / 94°01'W39°15'N / 94°01'W2.30 Miles100 Yards0025K0Ray
35.81967-01-24339°10'N / 94°10'W39°15'N / 94°03'W8.30 Miles200 Yards2182.5M0Ray
37.42006-03-12238°15'N / 94°20'W38°24'N / 94°09'W10.00 Miles450 Yards005K0Bates
 Brief Description: Tornado touched down at 1952 CST just on the north side of Butler...and then proceeded northeast over rural country...before crossing over into Cass county 2 miles north of Ballard at 2005 CST. Damage was limited to trees...power lines...and one barn.
37.51957-05-20239°12'N / 94°12'W39°17'N / 93°59'W12.80 Miles33 Yards0025K0Jackson
38.11973-04-20338°18'N / 93°17'W38°34'N / 93°10'W19.40 Miles100 Yards04250K0Benton
39.51957-05-20538°53'N / 94°36'W38°59'N / 94°24'W12.60 Miles440 Yards371762.5M0Jackson
40.41967-04-21239°05'N / 93°20'W39°07'N / 93°05'W13.50 Miles100 Yards0025K0Saline
40.51961-05-07239°18'N / 94°03'W39°20'N / 93°55'W7.30 Miles50 Yards0025K0Ray
40.61960-12-04239°15'N / 94°03'W39°23'N / 93°56'W11.00 Miles17 Yards0025K0Ray
40.71977-05-04439°19'N / 94°00'W39°21'N / 93°45'W13.40 Miles880 Yards012.5M0Ray
41.01961-05-07239°20'N / 93°55'W39°20'N / 93°55'W0225K0Ray
41.81960-04-15338°38'N / 94°37'W38°42'N / 94°32'W6.10 Miles500 Yards0025K0Cass
42.11958-07-17239°20'N / 94°01'W2.00 Miles33 Yards00250K0Ray
42.11977-05-04439°13'N / 94°18'W39°14'N / 94°17'W003K0Jackson
42.41980-05-12239°07'N / 93°29'W39°14'N / 93°00'W27.00 Miles100 Yards00250K0Saline
42.41977-05-04439°14'N / 94°17'W39°19'N / 94°08'W9.70 Miles400 Yards052.5M0Clay
42.71973-04-20239°19'N / 93°30'W5.00 Miles33 Yards0025K0Carroll
43.71968-05-15338°40'N / 94°37'W38°38'N / 94°36'W000K0Cass
43.81969-04-04238°28'N / 94°36'W38°31'N / 94°30'W6.90 Miles100 Yards00250K0Bates
43.81982-03-15338°05'N / 93°35'W38°15'N / 93°22'W14.00 Miles700 Yards012.5M0Benton
43.81977-05-04439°19'N / 94°08'W39°21'N / 94°06'W2.30 Miles300 Yards0025K0Ray
44.21977-05-04338°26'N / 94°33'W38°28'N / 94°31'W2.70 Miles500 Yards000K0Bates
44.51955-03-14239°18'N / 94°13'W39°20'N / 94°10'W3.30 Miles250 Yards0025K0Clay
44.61968-05-15338°38'N / 94°39'W38°40'N / 94°36'W2.70 Miles33 Yards0025K0Miami
45.01960-12-04239°23'N / 93°56'W39°24'N / 93°55'W0025K0Ray
45.21957-06-22239°00'N / 94°35'W39°15'N / 94°24'W19.80 Miles10 Yards000K0Jackson
45.61960-04-15338°35'N / 94°39'W38°38'N / 94°37'W2.30 Miles440 Yards02250K0Miami
45.72006-03-12339°03'N / 93°12'W39°07'N / 92°57'W15.00 Miles350 Yards0075K0Saline
 Brief Description: Tornado touched down 6 miles south of Marshall at 2028 CST. It traveled east-northeast and for a time paralleled another tornado to the north before the first one occluded. Little damage was noted along the track until it neared the Howard county line. The tornado merged with another tornado near the Missouri River and quickly produced F3 damage to a farmstead. The tornado then entered Howard county 4 miles north of Arrow Rock at 2046 CST.
46.41956-12-04239°07'N / 93°08'W39°10'N / 93°05'W4.30 Miles33 Yards0025K0Saline
46.51973-04-20238°50'N / 92°57'W2.30 Miles50 Yards0025K0Cooper
46.61977-05-04439°21'N / 93°45'W39°23'N / 93°11'W30.30 Miles33 Yards002.5M0Carroll
47.11961-05-07239°23'N / 93°37'W39°24'N / 93°26'W9.60 Miles50 Yards0025K0Carroll
47.32003-05-04239°15'N / 94°26'W39°18'N / 94°18'W8.50 Miles300 Yards0060.0M0Clay
 Brief Description: Tornado reported on the ground near Missouri Route 291, south of Missouri Route 152, it produced spotty damage northeast to downtown Liberty. Substantial damage was noted near the square in Libery, and to William Jewel College. The tornado tracked east along Missouri Route H into rural portions of Clay county before dissipating. Maximum intensity damage noted in the area was F2, based on surveys and input from local emergency management. A dry line moved into eastern Kansas on the afternoon of May 4th. Severe thunderstorms quickly erupted in the mid afternoon hours and marched east northeast into Missouri. Several of the severe thunderstorms became tornadic. A supercell thunderstorm produced 4 seperate tornadoes over the northland of Kansas City. The strongest tornadoes reached F4 in intensity and moved over southern portions of Platte and Clay counties. In Platte county 14 buildings were destroyed, 43 suffered major damage and 149 had minor damage. There were no fatalities or injuries and total damage was estimated at $33.95 million dollars. In Clay county total damages were estimated at $91 million dollars. Several hundred homes were either destroyed or had major or minor damage. No fatalities were observed but there were 19 injuries. This was the most significant tornado outbeak in the Kansas City Metropolitan area, since the Pleasant Hill Missouri outbreak in 1977.
48.21967-04-21239°07'N / 93°05'W39°10'N / 93°03'W3.60 Miles33 Yards0025K0Saline
49.22003-05-04439°14'N / 94°29'W39°14'N / 94°28'W5.00 Miles200 Yards01331.0M0Clay
 Brief Description: New tornado touchdown near Shady Lane and Antioch in Gladstone...with F0 to F1 damage to trees and roofs. The tornado intensified quickly, and damage of marginal F4 intensity was noted around one mile northeast of this area, near the intersection of NE 63rd Terrace and North Jackson. Another small area of marginal F4 intensity was noted just northeast of this location, in the Carriage Hills subdivision, just south of Pleasant Valley Road near North Brighton. Areas of F1 to F3 intensity damage was noted around these specific neighborhoods. The tornado continued northeast, based on air surveys, to just shy of Interstate 435 before dissipating. A dry line moved into eastern Kansas on the afternoon of May 4th. Severe thunderstorms quickly erupted in the mid afternoon hours and marched east northeast into Missouri. Several of the severe thunderstorms became tornadic. A supercell thunderstorm produced 4 seperate tornadoes over the northland of Kansas City. The strongest tornadoes reached F4 in intensity and moved over southern portions of Platte and Clay counties. In Platte county 14 buildings were destroyed, 43 suffered major damage and 149 had minor damage. There were no fatalities or injuries and total damage was estimated at $33.95 million dollars. In Clay county total damages were estimated at $91 million dollars. Several hundred homes were either destroyed or had major or minor damage. No fatalities were observed but there were 19 injuries. This was the most significant tornado outbeak in the Kansas City Metropolitan area, since the Pleasant Hill Missouri outbreak in 1977.
49.81973-05-07239°18'N / 94°24'W0.50 Mile20 Yards0025K0Clay
49.91954-05-31238°53'N / 94°43'W2.00 Miles33 Yards0025K0Johnson
49.91954-05-28238°15'N / 93°08'W1.00 Mile100 Yards00250K0Benton


* 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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