Roby, TX Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Roby is about the same as Texas average and is much lower than the national average. The risk of tornado damage in Roby is lower than Texas average and is higher than the national average.
Earthquake Index, #282
| Roby, TX | 0.04 |
| 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
| Roby, TX | 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, #945
| Roby, TX | 193.62 |
| 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 2,666 other weather extremes events within 50 miles of Roby, TX 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: | 1 | Cold: | 3 | Dense Fog: | 0 | Drought: | 12 |
| Dust Storm: | 1 | Flood: | 230 | Hail: | 1,613 | Heat: | 5 | Heavy Snow: | 10 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 8 | Landslide: | 0 | Strong Wind: | 14 |
| Thunderstorm Winds: | 721 | Tropical Storm: | 0 | Wildfire: | 2 | Winter Storm: | 12 | Winter Weather: | 14 |
| Other: | 20 | ||||||||
Volcanos Nearby
No volcano is found in or near Roby, TX.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Roby, TX.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 30.0 | 1978-06-16 | 5.3 | 10 | 33.03 | -100.77 |
Historical Tornado Events
A total of 55 historical tornado events that had recorded magnitude of 2 or above found in or near Roby, TX.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 0.8 | 1965-08-31 | 2 | 32°45'N / 100°22'W | 2.00 Miles | 20 Yards | 0 | 0 | 0K | 0 | Fisher | |
| 5.5 | 1962-05-31 | 2 | 32°40'N / 100°22'W | 1.00 Mile | 20 Yards | 0 | 0 | 0K | 0 | Fisher | |
| 7.8 | 1967-04-12 | 2 | 32°43'N / 100°15'W | 0.20 Mile | 40 Yards | 0 | 0 | 0K | 0 | Fisher | |
| 8.8 | 1967-04-12 | 2 | 32°51'N / 100°28'W | 0.30 Mile | 200 Yards | 0 | 0 | 0K | 0 | Fisher | |
| 12.4 | 1962-06-07 | 2 | 32°54'N / 100°32'W | 32°52'N / 100°30'W | 3.60 Miles | 200 Yards | 0 | 0 | 0K | 0 | Fisher |
| 13.1 | 1994-05-12 | 2 | 32°47'N / 100°36'W | 2.00 Miles | 75 Yards | 0 | 0 | 500K | 0 | Fisher | |
| 16.7 | 1968-05-24 | 3 | 32°38'N / 100°36'W | 32°38'N / 100°40'W | 4.10 Miles | 67 Yards | 0 | 0 | 25K | 0 | Scurry |
| 17.1 | 1991-05-02 | 2 | 32°53'N / 100°08'W | 0.20 Mile | 10 Yards | 0 | 0 | 25K | 0 | Jones | |
| 19.1 | 1968-05-24 | 3 | 32°38'N / 100°42'W | 32°39'N / 100°40'W | 2.70 Miles | 100 Yards | 0 | 0 | 25K | 0 | Scurry |
| 19.3 | 1973-03-23 | 2 | 32°28'N / 100°24'W | 32°28'N / 100°21'W | 3.30 Miles | 300 Yards | 0 | 0 | 250K | 0 | Nolan |
| 19.3 | 1986-04-19 | 3 | 32°27'N / 100°26'W | 32°29'N / 100°21'W | 4.50 Miles | 600 Yards | 1 | 100 | 25.0M | 0 | Nolan |
| 22.1 | 1963-04-26 | 2 | 32°44'N / 100°55'W | 32°48'N / 100°36'W | 19.00 Miles | 67 Yards | 0 | 0 | 0K | 0 | Scurry |
| 22.8 | 1990-05-14 | 2 | 32°50'N / 100°00'W | 0.20 Mile | 10 Yards | 0 | 3 | 0K | 0 | Jones | |
| 23.4 | 1985-04-28 | 2 | 32°36'N / 100°01'W | 3.50 Miles | 400 Yards | 0 | 0 | 25K | 0 | Jones | |
| 23.8 | 1968-05-24 | 3 | 32°38'N / 100°46'W | 2.00 Miles | 67 Yards | 0 | 0 | 25K | 0 | Scurry | |
| 24.0 | 1990-05-14 | 2 | 32°53'N / 100°00'W | 0.20 Mile | 10 Yards | 0 | 2 | 0K | 0 | Jones | |
| 24.1 | 1982-05-27 | 2 | 32°26'N / 100°41'W | 32°28'N / 100°31'W | 5.00 Miles | 30 Yards | 0 | 0 | 250K | 0 | Nolan |
| 24.3 | 1962-05-25 | 3 | 32°50'N / 100°00'W | 32°53'N / 99°58'W | 4.10 Miles | 67 Yards | 1 | 1 | 25K | 0 | Jones |
| 24.7 | 1990-05-14 | 2 | 32°56'N / 100°01'W | 2.00 Miles | 100 Yards | 0 | 2 | 250K | 0 | Jones | |
| 24.9 | 1961-03-16 | 2 | 32°24'N / 100°27'W | 32°24'N / 100°04'W | 22.40 Miles | 100 Yards | 0 | 0 | 3K | 0 | Taylor |
| 28.3 | 1989-05-13 | 2 | 32°35'N / 99°56'W | 1.50 Miles | 150 Yards | 0 | 0 | 0K | 0 | Jones | |
| 29.3 | 1982-05-27 | 2 | 32°25'N / 100°44'W | 32°26'N / 100°41'W | 3.00 Miles | 30 Yards | 0 | 0 | 250K | 0 | Mitchell |
| 29.5 | 1982-05-30 | 2 | 33°00'N / 99°58'W | 32°57'N / 99°56'W | 3.00 Miles | 100 Yards | 0 | 0 | 250K | 0 | Haskell |
| 30.0 | 1990-04-05 | 2 | 32°35'N / 99°54'W | 0.20 Mile | 10 Yards | 0 | 0 | 0K | 0 | Jones | |
| 30.0 | 1982-05-30 | 2 | 32°57'N / 99°56'W | 32°56'N / 99°54'W | 2.00 Miles | 100 Yards | 0 | 0 | 250K | 0 | Jones |
| 30.3 | 1990-05-14 | 3 | 32°53'N / 99°53'W | 0.20 Mile | 10 Yards | 0 | 2 | 0K | 0 | Jones | |
| 34.9 | 1978-07-03 | 2 | 32°29'N / 99°52'W | 0.10 Mile | 50 Yards | 0 | 0 | 250K | 0 | Taylor | |
| 37.1 | 1955-04-05 | 2 | 32°56'N / 99°48'W | 32°57'N / 99°46'W | 2.70 Miles | 67 Yards | 0 | 3 | 250K | 0 | Jones |
| 38.1 | 2005-06-12 | 2 | 33°15'N / 100°39'W | 33°14'N / 100°41'W | 2.00 Miles | 1200 Yards | 0 | 0 | 150K | 15K | Kent |
| Brief Description: The National Weather Service in Lubbock, TX conducted a damage survey in Kent County, approximately 8 miles to the northeast of Clairemont. In collaboration with the Center for Severe Weather Research in Boulder, CO and Texas Tech University meteorologists assessing the tornadoes across the county with Doppler-On-Wheels (DOW) data, a better understanding of the wind fields and tornado timing was achieved. The area of assessed damage was bounded by a triangle comprised of FM2320 to the south, FM1228 to the east, and CR112 to the west. There was a damage path characterized by tree damage across the zone. The path of the damage was oriented from a northeast-east to southwest-west direction. DOW data confirmed the large, wedge tornado initially propagated to the east and northeast, became nearly stationary, then rotate southward around the west side of the parent mesocyclone. The tornado moved to the southwest, then south and crossed FM1228 from the north/northeast to the south/southwest. The path of the tornado was between 0.6 to 0.7 miles wide. In assessing the damage, a circulatory patter was evident in a wheat field owned by a private farmer, with all of the wheat laying down to the south. Along this quadrant of the circulation, large farm equipment (tractors and cotton trailers) were tossed and mangled. An 80,000 lb box car was shaken by the tornado and the associated strong wind but was not moved from its location, however the contents inside were disturbed. The farm vehicles were tossed briefly a few times as there were scar marks and impact marks in the field as the equipment was blown to the south. The front-end of one tractor was snapped off after the second impact with the ground, as the vehicle was likely too heavy to remain airborne and was dragged and rolled by the tornadic wind and circulation. On the east side of the circulation, there were tree branches not grown in that immediate area that were stripped clean of bark. A cotton trailer (lighter than the other equipment) was lifted from its original location and was tossed to the north and mangled upon impact. The equipment was tossed approximately 3/10 of a mile within the circulation. It was evident from the damage pattern and debris, the circulation was multi-vortex in nature. The DOW measured wind speeds ranging from 45, 65 and 90 meters per second at various stages of the tornado life cycle at heights between 3 and 50 meters above ground level. | |||||||||||
| 39.8 | 1982-05-27 | 2 | 32°10'N / 100°52'W | 32°25'N / 100°44'W | 15.00 Miles | 30 Yards | 0 | 0 | 250K | 0 | Mitchell |
| 40.1 | 2009-06-13 | 2 | 33°12'N / 99°57'W | 33°10'N / 99°54'W | 4.00 Miles | 440 Yards | 0 | 0 | 1.0M | 0K | Haskell |
| Brief Description: EVENT NARRATIVE: A National Weather Service survey team found a quarter mile wide EF2 tornado that tore the roof off of four homes and desroyed several outbuildings, irrigation sprinklers, and power poles. EPISODE NARRATIVE: On June 13, thunderstorms developed along an outflow boundary across Northwest Texas. A supercell thunderstorm moved southeast across Haskell County and produced a strong tornado. There was significant damage near Rule. Also, large hail and widespread 60 to 70 mph winds were reported with this severe storm. | |||||||||||
| 40.5 | 1969-05-06 | 2 | 32°37'N / 99°42'W | 0.10 Mile | 50 Yards | 0 | 0 | 3K | 0 | Jones | |
| 41.2 | 1962-04-26 | 2 | 32°52'N / 99°43'W | 32°55'N / 99°40'W | 4.70 Miles | 440 Yards | 0 | 0 | 25K | 0 | Jones |
| 41.2 | 1965-05-15 | 3 | 32°27'N / 99°44'W | 32°35'N / 99°43'W | 9.30 Miles | 100 Yards | 0 | 2 | 250K | 0 | Jones |
| 41.7 | 1991-04-24 | 2 | 33°18'N / 100°45'W | 33°18'N / 100°35'W | 12.10 Miles | 350 Yards | 0 | 0 | 25K | 0 | Kent |
| 42.0 | 1957-08-12 | 2 | 32°35'N / 99°41'W | 0.50 Mile | 7 Yards | 0 | 0 | 3K | 0 | Jones | |
| 42.3 | 2004-06-11 | 2 | 32°10'N / 100°44'W | 32°12'N / 100°36'W | 10.30 Miles | 200 Yards | 0 | 3 | 250K | 0 | Mitchell |
| Brief Description: A National Weather Service damage survey team concluded that a significant tornado struck rural areas of southeastern Mitchell County during the evening of the 11th. The team examined a damage path marked by shredded vegetation (mostly mesquite trees), downed utility poles, agricultural fences, and a complex of destroyed mobile homes that extended over ten miles in a continuous horseshoe shaped path that crossed State Route 208 twenty miles south-southeast of Colorado City. The tornado developed seventeen miles south-southeast of Colorado City around 2028 CST. Damage indicates the tornado's motion was initially toward the southeast then east as it crossed the heavily traveled State Route 208. Two Texas Tech University students traveling north on 208 (south of the tornado's path) watched as a Ford Expedition drove into the tornadic circulation. The large sports utility vehicle was blown 100 yards off of the highway. Evidence supports the vehicle was rolled a considerable distance by the tornadic winds, but it is unclear whether it became airborne. Three motorists were transferred to local hospitals. One person sustained serious injuries that included a broken back. A detailed damage path analysis and corresponding radar data suggest that the tornado then tracked very slowly east a few miles before curving to the northeast. Similar curved damage paths (turning left of the tornado's original motion) are commonly observed when well-developed tornadoes enter the dissipation stage. The tornado proved to remain very dangerous, however, as eight mobile homes were destroyed by the tornado near the end of its life cycle twenty miles southeast of Colorado City. The light weight and unanchored structures were blown over and shredded by the dissipation stage tornadic winds. The trailers were arranged in a complex and were used to provide shelter for groups of hunters that frequent the ranch property. They were not occupied when the tornado struck. In summary, a significant round of severe thunderstorms affected parts of west Texas during the afternoon and evening of the 11th. At least two supercell storms produced giant hail and one strong tornado over the region. A supercell thunderstorm tracked across Terrell County in the west Texas Lower Trans Pecos region during the late afternoon hours. Multiple reports of large hail including two different instances of tennis ball sized stones were received as this storm tracked east along U.S. Highway 90 between Sanderson and Dryden. A second area of convection erupted over the eastern Permian Basin by late afternoon and continued into the evening hours. A severe storm associated with this activity produced half-dollar size hail in the Westbrook community. An isolated classic supercell evolved from this complex of storms and took on a distinctly deviant southeastward storm motion. This storm took on radar characteristics consistent with a classic tornadic supercell. Hail up to the size of golfballs was observed southeast of Colorado City as the storm evolved into its tornadic phase. A long-lived significant tornado tracked across mainly rural areas of Mitchell County just after sunset. The tornado resulted in three injuries when it crossed State Route 208 and blew a vehicle off of the highway. Severe rear flank downdraft winds also resulted in widespread wind damage south of the tornado's path. | |||||||||||
| 42.8 | 1990-04-05 | 2 | 32°27'N / 99°44'W | 0.20 Mile | 10 Yards | 0 | 0 | 0K | 0 | Taylor | |
| 43.4 | 1985-04-28 | 2 | 32°08'N / 100°07'W | 32°11'N / 100°07'W | 2.50 Miles | 300 Yards | 1 | 0 | 250K | 0 | Taylor |
| 44.0 | 1976-05-25 | 3 | 32°34'N / 99°41'W | 32°30'N / 99°39'W | 5.20 Miles | 300 Yards | 0 | 0 | 2.5M | 0 | Jones |
| 44.4 | 1969-06-19 | 2 | 32°47'N / 99°37'W | 0.10 Mile | 10 Yards | 0 | 0 | 25K | 0 | Jones | |
| 44.8 | 1965-05-25 | 2 | 32°09'N / 100°41'W | 2.00 Miles | 200 Yards | 0 | 1 | 250K | 0 | Mitchell | |
| 45.3 | 1976-05-26 | 3 | 32°31'N / 99°39'W | 1.00 Mile | 300 Yards | 0 | 0 | 250K | 0 | Jones | |
| 45.4 | 1985-04-28 | 2 | 32°07'N / 100°08'W | 32°08'N / 100°07'W | 1.50 Miles | 300 Yards | 0 | 0 | 250K | 0 | Nolan |
| 45.9 | 1962-05-26 | 2 | 33°10'N / 99°46'W | 1.00 Mile | 67 Yards | 0 | 0 | 0K | 0 | Haskell | |
| 46.3 | 1955-04-05 | 2 | 32°57'N / 99°46'W | 32°59'N / 99°29'W | 16.60 Miles | 67 Yards | 0 | 0 | 250K | 0 | Haskell |
| 46.4 | 1973-03-10 | 2 | 32°20'N / 99°45'W | 0 | 1 | 25K | 0 | Taylor | |||
| 46.7 | 1963-04-05 | 2 | 33°09'N / 99°44'W | 1.00 Mile | 33 Yards | 0 | 0 | 3K | 0 | Haskell | |
| 47.4 | 1969-06-12 | 2 | 32°04'N / 100°16'W | 0.50 Mile | 50 Yards | 0 | 0 | 25K | 0 | Coke | |
| 47.7 | 1976-05-25 | 3 | 32°30'N / 99°39'W | 32°29'N / 99°35'W | 4.30 Miles | 300 Yards | 0 | 1 | 2.5M | 0 | Taylor |
| 47.7 | 1991-04-24 | 3 | 33°09'N / 99°46'W | 33°12'N / 99°42'W | 3.50 Miles | 200 Yards | 0 | 1 | 250K | 0 | Haskell |
| 49.2 | 1961-05-07 | 3 | 32°56'N / 99°35'W | 32°58'N / 99°33'W | 3.60 Miles | 133 Yards | 0 | 0 | 250K | 0 | Shackelford |
| 49.7 | 1979-10-30 | 2 | 32°13'N / 99°48'W | 0 | 0 | 25K | 0 | Taylor | |||
| 49.8 | 2003-05-03 | 2 | 33°04'N / 99°38'W | 33°07'N / 99°37'W | 4.00 Miles | 440 Yards | 0 | 0 | 10K | 0 | Haskell |
| Brief Description: Spotters watched a large one quarter mile wide tornado that moved across the northeast portion of lake Stamford. This tornado came within yards of hitting the lake Stamford power plant, however it did knock down 11 transmission poles coming out of the power plant and eight distribution poles. This tornado was also filmed by a weather broadcaster from a local Abilene television station. An isolated severe thunderstorm formed along the dry line in the late afternoon in Dickens County. This thunderstorm split into two different cells with one going northeast into Oklahoma and the other moving almost due east across Stonewall, Haskell and Eastern Throckmorton Counties. As the thunderstorm was over eastern Stonewall County, it begin to take on tornadic radar signatures and continued to intensify as it moved into Haskell County. During it's two hour trek across Haskell County, it produced at least four tornadoes. Right after the storm crossed over into Throckmorton County it weakened rapidly and eventually dissipated over the southeastern portion of Throckmorton County. | |||||||||||
| 50.0 | 2004-03-04 | 2 | 33°05'N / 99°37'W | 33°05'N / 99°37'W | 1.00 Mile | 440 Yards | 0 | 0 | 100K | 0 | Haskell |
| Brief Description: Numerous manufactured homes were damaged or destroyed by the tornado along Lake Stamford. A strong upper level disturbance combined with a strong surface low pressure system moving across West Central Texas produced a significant squall line that moved through the entire San Angelo county warning area. This squall line was accompanied by 60 to 80 MPH winds which produced widespread damage, especially across the Big Country. Embedded within the squall line, were several Supercell thunderstorms which produced nine tornadoes within the San Angelo county warning area. | |||||||||||
* 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.