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Leon County Natural Disasters and Weather Extremes

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

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

Earthquake Index, #113

Leon County
0.01
Texas
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

Leon County
0.0000
Texas
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, #179

Leon County
88.90
Texas
208.58
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 9,662 other weather extremes events within 50 miles of Leon County were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:0Cold:11Dense Fog:0Drought:158
Dust Storm:5Flood:1,362Hail:3,659Heat:26Heavy Snow:37
High Surf:3Hurricane:6Ice Storm:42Landslide:0Strong Wind:70
Thunderstorm Winds:3,955Tropical Storm:12Wildfire:16Winter Storm:37Winter Weather:48
Other:215 

Volcanos Nearby

No volcano is found in or near Leon County.

Historical Earthquake Events

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

No historical earthquake events found in or near Leon County.

Historical Tornado Events

A total of 33 historical tornado events that had recorded magnitude of 2 or above found in or near Leon County.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
9.11953-05-11231°19'N / 96°13'W31°22'N / 96°04'W9.50 Miles267 Yards0025K0Leon
12.71987-11-15231°06'N / 95°58'W31°09'N / 95°54'W3.00 Miles200 Yards002.5M0Leon
18.51987-11-15230°58'N / 96°04'W31°06'N / 95°58'W7.00 Miles200 Yards322.5M0Madison
23.21953-05-16331°14'N / 95°34'W31°15'N / 95°39'W5.20 Miles33 Yards180K0Houston
23.41984-02-11231°05'N / 96°18'W1.50 Miles100 Yards032.5M0Leon
26.41954-04-30330°37'N / 97°12'W31°29'N / 95°28'W118.8 Miles880 Yards00250K0Milam
26.81954-10-22230°55'N / 96°07'W30°55'N / 96°00'W7.10 Miles100 Yards0025K0Madison
27.01967-05-01230°55'N / 96°05'W0.60 Mile33 Yards003K0Madison
27.21967-04-13231°43'N / 95°52'W31°37'N / 95°47'W8.60 Miles300 Yards0025K0Leon
28.11957-04-24231°38'N / 96°16'W31°40'N / 96°13'W4.10 Miles100 Yards000K0Freestone
32.21961-03-26231°19'N / 95°27'W1.50 Miles100 Yards01250K0Houston
32.31987-11-15331°36'N / 95°42'W31°45'N / 95°38'W10.50 Miles250 Yards15925.0M0Anderson
32.42002-03-30231°24'N / 96°35'W31°27'N / 96°28'W7.00 Miles440 Yards00250K0Limestone
 Brief Description: This tornado first touched down just west of farm road 2749 about .5 mile southeast of Thornton. Two houses were damaged, one mobile home destroyed and a mobile home unroofed. The tornado moved northeast damaging a barn, then moved into the Davis Prairie community damaging several houses, some mobile homes, and numerous outbuildings. The tornado moved northeast and weakened before dissipating 2.4 miles south of the Box Church community.
32.71974-10-31331°37'N / 95°35'W2.00 Miles500 Yards040K0Anderson
35.41973-06-03231°26'N / 96°37'W31°29'N / 96°31'W6.80 Miles100 Yards00250K0Limestone
35.71990-04-27331°36'N / 96°30'W31°38'N / 96°27'W4.00 Miles100 Yards002.5M0Limestone
35.81980-10-16231°43'N / 95°38'W2.00 Miles50 Yards0125K0Anderson
35.82006-12-29231°19'N / 96°38'W31°36'N / 96°31'W20.00 Miles400 Yards1201.0M0KLimestone
 Brief Description: EVENT NARRATIVE: A damage survey was conducted by a team from the National Weather Service Forecast Office in Fort Worth, and they found that a tornado formed near Kosse. The first sign of damage found by the survey team was uprooted trees along CR 662. The tornado took a north-northeast track and several areas of large uprooted trees were found along CR 660, CR 656, CR 644, FM 1246 and FM 147. Damage to barns, sheds, and roofs was also found in this stretch. Substantial damage was found along CR 635 were a home was struck, resulting in one fatality and several injuries. Portions of the roof were removed and an adjacent barn was heavily damaged. A barn was destroyed along the adjacent road CR 633. The next significant damage was along Highway 164 just west of Groesbeck, where several homes, barns, and trees suffered considerable damage. Numerous livestock were killed along the path. A total of about sixty homes and businesses were damaged in Limestone County, and it has since been designated a disaster area by the Governor. The tornado then continued north into Fort Parker State Park. Lack of damage here indicated that the tornado dissipated nearby. EPISODE NARRATIVE: A rare winter tornado outbreak occurred on December 29 over portions of North Texas, spawning almost two dozen tornadoes. Very high shear and low instability created an environment favorable for tornadoes. A strong surface low pressure system and warm front located in southern North Texas increased the probablitity for low-level rotation. In addition to tornadoes, severe reports of large hail and flash flooding were widespread.
36.61984-02-11231°45'N / 95°40'W1.00 Mile100 Yards032.5M0Anderson
36.71950-02-12231°31'N / 96°33'W31°34'N / 96°33'W3.40 Miles100 Yards0025K0Limestone
36.91981-02-10230°46'N / 96°00'W2.50 Miles77 Yards02250K0Grimes
38.31953-11-19231°46'N / 95°43'W31°48'N / 95°38'W5.60 Miles50 Yards0025K0Anderson
39.81976-05-25231°41'N / 96°30'W0.10 Mile33 Yards0025K0Limestone
43.61959-05-10330°46'N / 96°36'W30°54'N / 96°23'W15.80 Miles333 Yards073K0Robertson
45.51981-05-09231°52'N / 95°42'W31°53'N / 95°32'W9.90 Miles73 Yards0025K0Anderson
46.91956-04-05330°41'N / 96°22'W30°41'N / 96°17'W5.20 Miles67 Yards00250K0Brazos
47.02007-09-05231°50'N / 96°26'W31°55'N / 96°25'W6.00 Miles80 Yards0040K0KNavarro
 Brief Description: EVENT NARRATIVE: This tornado formed roughly two miles east-southeast of the first tornado. Damage was first noted along CR 2410 just north of the Freestone County line. Trees were uprooted and trunks and large limbs snapped as the tornado moved northeast. A barn was destroyed roughly one mile west of Interstate 45, and two metal transmission line towers were damaged 1/2 miles west of the interstate. The tornado dissipated shortly after crossing Interstate 45. EPISODE NARRATIVE: An upper level low lingered in the area creating conditions ripe for flooding. Several instances of flash flooding were reported as a large area of rain persisted through mid-morning.
48.21957-03-31230°43'N / 95°33'W2.00 Miles100 Yards0225K0Walker
48.51981-02-10230°48'N / 95°34'W30°50'N / 95°14'W19.90 Miles100 Yards18250K0Walker
48.61990-04-27231°40'N / 96°42'W16.00 Miles880 Yards0825.0M0Limestone
49.11981-10-13331°57'N / 96°09'W32°03'N / 96°08'W7.20 Miles100 Yards0125K0Navarro
49.11981-05-09331°57'N / 95°54'W32°03'N / 95°47'W9.90 Miles100 Yards00250K0Anderson
49.51954-04-30230°38'N / 96°20'W30°39'N / 96°19'W1.90 Miles67 Yards000K0Brazos


* 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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