Kerr County Natural Disasters and Weather Extremes
Hot Texas Rankings
The chance of earthquake damage in Kerr County is about the same as Texas average and is much lower than the national average. The risk of tornado damage in Kerr County is much lower than Texas average and is much lower than the national average.
Earthquake Index, #161
| Kerr County | 0.00 |
| 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
| Kerr 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, #192
| Kerr County | 60.87 |
| 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 6,323 other weather extremes events within 50 miles of Kerr County 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: | 7 | Dense Fog: | 1 | Drought: | 154 |
| Dust Storm: | 0 | Flood: | 1,777 | Hail: | 2,775 | Heat: | 10 | Heavy Snow: | 34 |
| High Surf: | 0 | Hurricane: | 1 | Ice Storm: | 23 | Landslide: | 0 | Strong Wind: | 53 |
| Thunderstorm Winds: | 1,325 | Tropical Storm: | 6 | Wildfire: | 13 | Winter Storm: | 38 | Winter Weather: | 26 |
| Other: | 78 | ||||||||
Volcanos Nearby
No volcano is found in or near Kerr County.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Kerr County.
No historical earthquake events found in or near Kerr County.
Historical Tornado Events
A total of 21 historical tornado events that had recorded magnitude of 2 or above found in or near Kerr County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 8.1 | 1971-02-25 | 2 | 30°10'N / 99°19'W | 0.30 Mile | 300 Yards | 0 | 0 | 3K | 0 | Kerr | |
| 18.0 | 1999-05-11 | 3 | 30°18'N / 99°12'W | 30°15'N / 99°11'W | 3.50 Miles | 200 Yards | 0 | 0 | 1.0M | 100K | Gillespie |
| Brief Description: The tornado was preceded by strong, gusty winds, very heavy rainfall and finally, large hail. Severe winds in advance of the tornado took a roof off the High School in Harper and laid it on the ground on the opposite side of the building. These winds also damaged several other roofs in the area. The tornado began its track around three miles east of Harper, moving toward the southeast. It lifted post oak trees out of the ground with their roots in tact. Approximately 2 miles down the path, it turned toward the south and continued for another 1.5 miles. Along its track, it destroyed. 35 homes, 10 mobile homes, and damaged or destroyed 25 outbuildings and barns. The tornado damage several vehicles and tossed one jeep over 100 yards. | |||||||||||
| 22.9 | 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 |
| 34.3 | 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 |
| 34.6 | 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 |
| 35.4 | 1989-05-17 | 2 | 30°21'N / 98°52'W | 2.00 Miles | 100 Yards | 0 | 0 | 0K | 0 | Gillespie | |
| 35.9 | 1996-09-15 | 2 | 29°32'N / 99°32'W | 29°35'N / 99°32'W | 4.00 Miles | 700 Yards | 0 | 1 | 20K | 0K | Uvalde |
| Brief Description: Tornado formed 6 miles south of Utopia and moved northward to 2 miles south of Utopia before dissipating. It knocked over numerous trees of 15 to 20 foot diameter, damaging vehicles, trailers and barns along the way. The tornado moved cabins and took the roofs off two of the cabins at a Girl Scout Camp. It moved the cabins off their foundations, but caused no injuries as the Scouts had gathered in a larger, more substantial building. The tornado moved across a second campground, destroying the site and causing one injury as it knocked a tree over on one of the campers. | |||||||||||
| 36.1 | 1962-05-28 | 2 | 30°17'N / 98°51'W | 30°17'N / 98°46'W | 5.10 Miles | 100 Yards | 0 | 0 | 0K | 0 | Gillespie |
| 36.7 | 1965-06-06 | 2 | 30°35'N / 99°18'W | 1.00 Mile | 200 Yards | 0 | 0 | 0K | 0 | Mason | |
| 37.3 | 1965-05-16 | 2 | 30°30'N / 99°00'W | 0.20 Mile | 33 Yards | 0 | 0 | 0K | 0 | Gillespie | |
| 38.4 | 1970-05-14 | 2 | 29°30'N / 99°24'W | 0.50 Mile | 440 Yards | 0 | 0 | 0K | 0 | Medina | |
| 39.6 | 1957-03-31 | 2 | 29°49'N / 98°45'W | 1.50 Miles | 880 Yards | 0 | 0 | 3K | 0 | Kendall | |
| 43.7 | 2001-10-12 | 3 | 30°15'N / 98°40'W | 30°16'N / 98°39'W | 2.50 Miles | 400 Yards | 0 | 5 | 1.0M | 100K | Gillespie |
| Brief Description: The strongest of the Friday night tornadoes struck the town of Stonewall. This tornado, rated F3 on the Fujita Scale, was preceded by brief gusty winds of 30 to 40 miles per hour, very heavy rainfall and spotty .5-inch hail. The tornado formed around 830 pm CST near the intersection of Hahn Road and SH290. It moved north-northeastward for .75 miles, crossing SH290 and the Pedernales River. Just north of the river, it made a slight turn toward the east, now moving another mile toward the northeast. It crossed North River Road and continued over open country until it crossed Ranch Road 1623. After passing RR1623 for approximately .25 miles, it dissipated. The worst damage, F3 level, was to trees and homes between RR1623 and SH290, across the northwest and north central part of Stonewall. Ninety homes sustained damage with 6 destroyed. In addition, 7 mobile homes were destroyed and 20 damaged. Damage was also reported to 22 buildings. A two-story home had the entire second story destroyed, and a concrete building lost most of its walls and all of its roof. Other damage along the path typically included destroyed and damaged roofs and walls of homes and businesses as well as widespread damage to trees. The tornado path was approximately .25 miles in width and 2.5 miles in length. Although the tornado was not seen due to the late hour and darkness, residents did report that after heavy rain and hail, the wind became calm, and it was followed by a "roaring sound" so often reported in tornadoes. Five persons were injured with one man hospitalized as a result of the tornado. | |||||||||||
| 45.2 | 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 |
| 46.0 | 1999-05-11 | 4 | 30°41'N / 99°06'W | 30°39'N / 99°00'W | 7.00 Miles | 1400 Yards | 1 | 6 | 750K | 250K | Mason |
| Brief Description: A large multiple-vortex tornado ripped through eastern Mason County during the late afternoon hours. The slow moving tornado first touched down near the Llano River 9 miles northwest of Loyal Valley and then travelled a 7-mile long path, finally dissipating 5 miles north of Loyal Valley. This tornado, whose width would reach three-quarters of a mile wide at times, caused widespread devastation. Two homes were completely destroyed, with debris scattered over great distances. Large pieces of a pick-up truck were located three-quarters of a mile away from the house where it had been left. Tragically, one person was killed and 5 others were injured when that same house was destroyed. The people had sought refuge in a car in a stone garage, but as the tornado tore across the garage, debris smashed through the car, killing one man and injuring the remaining occupants. Sixteen other houses were damaged, along with additional barns and outbuildings. Numerous head of cattle and deer were also killed as the tornado passed. When the tornado crossed Farm-to-Market Road 152, a stretch of asphalt 720 feet wide was ripped off of the road surface. M75PH A series of supercell thunderstorms ripped across the Heartland and Northwest Hill Country on the afternoon of the 11th. Three tornadoes would touch down, including a devastating F4 tornado north of Loyal Valley in eastern Mason County. One person was killed and 6 others injured as the three-quarters of a mile tornado tracked a 7 mile long path. | |||||||||||
| 46.6 | 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 |
| 46.9 | 1970-05-15 | 2 | 30°15'N / 98°36'W | 0.50 Mile | 27 Yards | 0 | 0 | 3K | 0 | Gillespie | |
| 48.9 | 1959-05-01 | 2 | 29°19'N / 99°28'W | 29°23'N / 99°25'W | 5.70 Miles | 33 Yards | 0 | 0 | 0K | 0 | Uvalde |
| 49.0 | 1970-04-18 | 2 | 29°40'N / 98°40'W | 0.50 Mile | 67 Yards | 0 | 0 | 25K | 0 | Bexar | |
| 49.4 | 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. | |||||||||||
| 49.8 | 1979-03-02 | 3 | 30°46'N / 99°23'W | 30°47'N / 99°16'W | 7.10 Miles | 150 Yards | 0 | 1 | 2.5M | 0 | Mason |
* 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.