USA.com / Texas / Fort Sam Houston Independent School District / Natural Disasters and Weather Extremes
Fort Sam Houston Independent School District Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Fort Sam Houston Independent School District is about the same as Texas average and is much lower than the national average. The risk of tornado damage in Fort Sam Houston Independent School District is lower than Texas average and is higher than the national average.
Earthquake Index, #424
| Fort Sam Houston Independent School District | 0.02 |
| 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
| Fort Sam Houston Independent School District | 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, #851
| Fort Sam Houston Independent School District | 154.60 |
| 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 2,371 other weather extremes events within 50 miles of Fort Sam Houston Independent School District were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 2 | Cold: | 3 | Dense Fog: | 1 | Drought: | 68 |
| Dust Storm: | 0 | Flood: | 773 | Hail: | 843 | Heat: | 1 | Heavy Snow: | 24 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 11 | Landslide: | 0 | Strong Wind: | 40 |
| Thunderstorm Winds: | 541 | Tropical Storm: | 3 | Wildfire: | 7 | Winter Storm: | 15 | Winter Weather: | 8 |
| Other: | 31 | ||||||||
Volcanos Nearby
No volcano is found in or near Fort Sam Houston Independent School District.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Fort Sam Houston Independent School District.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 41.9 | 1984-03-03 | 3.9 | 5 | 28.85 | -98.46 |
Historical Tornado Events
A total of 39 historical tornado events that had recorded magnitude of 2 or above found in or near Fort Sam Houston Independent School District.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 2.3 | 1969-05-16 | 2 | 29°25'N / 98°30'W | 29°27'N / 98°27'W | 4.30 Miles | 100 Yards | 0 | 3 | 250K | 0 | Bexar |
| 5.0 | 1980-08-10 | 2 | 29°25'N / 98°25'W | 29°25'N / 98°37'W | 12.20 Miles | 100 Yards | 0 | 2 | 250K | 0 | Bexar |
| 5.3 | 1969-05-03 | 2 | 29°23'N / 98°25'W | 1.00 Mile | 67 Yards | 0 | 0 | 250K | 0 | Bexar | |
| 7.3 | 1961-11-22 | 3 | 29°23'N / 98°32'W | 1.00 Mile | 50 Yards | 0 | 0 | 3K | 0 | Bexar | |
| 8.3 | 1953-04-28 | 3 | 29°33'N / 98°32'W | 29°35'N / 98°28'W | 4.90 Miles | 200 Yards | 1 | 5 | 250K | 0 | Hays |
| 9.8 | 1988-09-17 | 2 | 29°24'N / 98°38'W | 29°29'N / 98°35'W | 5.00 Miles | 50 Yards | 0 | 3 | 25.0M | 0 | Bexar |
| 11.1 | 1954-07-12 | 2 | 29°35'N / 98°20'W | 1.00 Mile | 33 Yards | 0 | 0 | 3K | 0 | Bexar | |
| 14.7 | 1959-05-10 | 2 | 29°16'N / 98°20'W | 1.00 Mile | 33 Yards | 0 | 0 | 3K | 0 | Bexar | |
| 16.6 | 1970-09-13 | 2 | 29°13'N / 98°26'W | 0.10 Mile | 17 Yards | 0 | 0 | 3K | 0 | Bexar | |
| 17.1 | 1953-04-28 | 4 | 29°34'N / 98°42'W | 1.00 Mile | 1760 Yards | 2 | 15 | 0K | 0 | Bexar | |
| 18.4 | 1958-05-03 | 2 | 29°43'N / 98°41'W | 29°43'N / 98°20'W | 21.00 Miles | 67 Yards | 0 | 0 | 25K | 0 | Bexar |
| 19.7 | 1970-04-18 | 2 | 29°40'N / 98°40'W | 0.50 Mile | 67 Yards | 0 | 0 | 25K | 0 | Bexar | |
| 20.1 | 2002-03-19 | 2 | 29°15'N / 98°41'W | 29°16'N / 98°42'W | 1.50 Miles | 50 Yards | 0 | 30 | 2.0M | 0 | Bexar |
| Brief Description: Tornado number five, strongest of the six and rated as a minimal F2 tornado on the Fujita Scale, formed about 3.5 miles southwest of the intersection of Loop 1604 and I35. It struck near 720 pm along near Silver Street and Bravo Street and moved toward the north for 1.5 miles. It apparently weakened periodically, producing a hit-and-miss damage path. It completely destroyed four mobile homes and damaged several others. | |||||||||||
| 20.9 | 1958-05-02 | 2 | 29°17'N / 98°51'W | 29°34'N / 98°44'W | 20.80 Miles | 200 Yards | 0 | 0 | 250K | 0 | Medina |
| 23.9 | 1967-09-20 | 3 | 29°39'N / 98°07'W | 5.00 Miles | 67 Yards | 0 | 0 | 250K | 0 | Comal | |
| 24.0 | 1950-05-15 | 2 | 29°47'N / 98°50'W | 29°40'N / 98°34'W | 18.00 Miles | 33 Yards | 0 | 0 | 25K | 0 | Kendall |
| 24.4 | 1965-05-18 | 2 | 29°07'N / 98°20'W | 0 | 0 | 0K | 0 | Wilson | |||
| 24.9 | 1961-09-04 | 2 | 29°37'N / 98°04'W | 29°37'N / 98°05'W | 1.90 Miles | 33 Yards | 0 | 0 | 3K | 0 | Guadalupe |
| 26.7 | 1966-05-21 | 2 | 29°42'N / 98°06'W | 2.00 Miles | 880 Yards | 0 | 0 | 0K | 0 | Cottle | |
| 28.8 | 2007-07-21 | 2 | 29°26'N / 97°58'W | 29°28'N / 97°58'W | 2.00 Miles | 150 Yards | 0 | 0 | 50K | 0K | Guadalupe |
| Brief Description: EVENT NARRATIVE: At approximately 4:25 am CST a tornado estimated to be an EF-2 touched down about 9 miles south of Seguin and 1/4 mile southeast of CR411. The tornado moved northward along SH123 for nearly 1 mile before turning slightly to the north northwest and crossing CR410. It damaged three outbuildings, a residence and a store, but no one was injured. The tornado ranged in width from 50 yards up to 150 yards. The total track length was approximately 2 miles. EPISODE NARRATIVE: Thunderstorms associated with a persistent upper level low produced heavy rain and flash flooding through the morning on July 21. | |||||||||||
| 30.1 | 1956-10-20 | 2 | 29°35'N / 97°58'W | 1.00 Mile | 33 Yards | 0 | 1 | 3K | 0 | Guadalupe | |
| 30.9 | 1957-03-31 | 2 | 29°49'N / 98°45'W | 1.50 Miles | 880 Yards | 0 | 0 | 3K | 0 | Kendall | |
| 31.4 | 1969-05-22 | 2 | 29°36'N / 97°57'W | 0 | 0 | 3K | 0 | Guadalupe | |||
| 31.8 | 1967-05-01 | 2 | 29°39'N / 97°58'W | 0.50 Mile | 20 Yards | 0 | 0 | 3K | 0 | Guadalupe | |
| 33.1 | 1953-12-01 | 3 | 29°30'N / 97°56'W | 29°32'N / 97°52'W | 5.10 Miles | 1760 Yards | 0 | 10 | 250K | 0 | Guadalupe |
| 36.6 | 1983-03-04 | 2 | 29°54'N / 98°50'W | 29°52'N / 98°47'W | 4.00 Miles | 100 Yards | 0 | 1 | 250K | 0 | Kendall |
| 39.3 | 1980-08-10 | 2 | 29°54'N / 98°05'W | 30°06'N / 98°25'W | 24.20 Miles | 33 Yards | 0 | 0 | 25.0M | 0 | Hays |
| 39.9 | 1976-03-30 | 2 | 29°56'N / 98°55'W | 29°58'N / 98°40'W | 15.20 Miles | 200 Yards | 0 | 0 | 2.5M | 0 | Kendall |
| 41.7 | 1980-08-10 | 2 | 29°54'N / 97°52'W | 29°54'N / 98°05'W | 13.10 Miles | 200 Yards | 0 | 20 | 25.0M | 0 | Caldwell |
| 41.8 | 1961-11-12 | 2 | 29°52'N / 97°56'W | 0 | 0 | 3K | 0 | Hays | |||
| 42.9 | 1965-05-18 | 2 | 29°16'N / 97°46'W | 0.50 Mile | 33 Yards | 0 | 0 | 3K | 0 | Gonzales | |
| 43.2 | 1967-05-08 | 2 | 28°58'N / 98°02'W | 29°01'N / 97°54'W | 8.90 Miles | 440 Yards | 0 | 0 | 3K | 0 | Karnes |
| 43.4 | 2001-10-12 | 2 | 29°22'N / 99°10'W | 29°21'N / 99°09'W | 1.20 Miles | 500 Yards | 0 | 25 | 20.0M | 50K | Medina |
| Brief Description: The tornado was spotted as it touched down near 940 pm CST just northwest of the Hondo airport. It grew to nearly 500 yards in width and moved toward the southeast for 1.2 miles across the airport and over the National Guard Armory before dissipating near the center of town. Although much of the damage was F0 and F1 on the Fujita Scale, the tornado was rated F2 because of the level of damage from the airport to the armory. During this time it destroyed a large hangar, partially destroyed the roof and walls of the concrete Armory and moved numerous mobile homes off their pads. One mobile home clearly showed the nature of damage from a tornado. The center of the mobile home was completely destroyed, along with a tree in front of it, while much less damage was indicted on both ends of the mobile home as well as vegetation near the ends. The storm also knocked out power to much of the area, and this, along with the darkness in the late night hour, made spotting very difficult. It is possible that additional small tornadoes might have accompanied the storm, but the combination of damage from the large tornado and the downburst winds, along with the darkness of the late night hour made it impossible to tell. Almost 150 homes in Hondo and almost 50 more outside the city were damaged, with nearly 100 mobile homes damaged. At least 10 houses and 30 mobile homes were destroyed. Losses to homes and mobile homes were estimated at 1.5 million dollars. In addition, nearly two dozen aircraft, including one corporate jet and 14 crop dusters, were damaged and destroyed at the Hondo Airport. Some were in collapsed hangars while others were lifted, tossed and set down across the Airport area. Commercial losses placed at 18 million dollars. At least 25 persons were injured. | |||||||||||
| 43.9 | 1976-03-30 | 2 | 30°00'N / 98°04'W | 1.00 Mile | 100 Yards | 0 | 0 | 25K | 0 | Hays | |
| 45.7 | 1969-05-06 | 3 | 30°06'N / 98°35'W | 30°07'N / 98°34'W | 2.30 Miles | 100 Yards | 0 | 0 | 25K | 0 | Kendall |
| 45.7 | 1980-08-10 | 2 | 30°06'N / 98°25'W | 30°08'N / 98°35'W | 10.40 Miles | 33 Yards | 0 | 0 | 25.0M | 0 | Blanco |
| 48.5 | 1975-04-29 | 3 | 29°04'N / 99°11'W | 29°04'N / 99°03'W | 8.30 Miles | 500 Yards | 3 | 5 | 0K | 0 | Medina |
| 48.7 | 1959-11-03 | 2 | 29°57'N / 99°02'W | 30°02'N / 98°55'W | 9.10 Miles | 1760 Yards | 0 | 0 | 25K | 0 | Kerr |
| 49.5 | 2002-04-07 | 2 | 29°07'N / 99°10'W | 29°08'N / 99°11'W | 1.00 Mile | 100 Yards | 0 | 0 | 200K | 0 | Medina |
| Brief Description: As a new supercell formed in southern Medina County and tracked eastward, it spawned an F2 tornado just west of the small community of Yancey. This was very close to the the site where a devastating F3 killer tornado had struck almost exactly 27 years earlier. This tornado touched down along County Road 731, destroying two homes. It moved toward the northeast for one mile, damaging two other homes and a mobile home while rolling over a car and knocking down several large trees. | |||||||||||
* 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.