Seneca Valley School District Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Seneca Valley School District is about the same as Pennsylvania average and is much lower than the national average. The risk of tornado damage in Seneca Valley School District is higher than Pennsylvania average and is about the same as the national average.
Earthquake Index, #515
| Seneca Valley School District | 0.01 |
| Pennsylvania | 0.17 |
| 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
| Seneca Valley School District | 0.0000 |
| Pennsylvania | 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, #236
| Seneca Valley School District | 140.21 |
| Pennsylvania | 109.77 |
| 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 5,256 other weather extremes events within 50 miles of Seneca Valley 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: | 5 | Cold: | 11 | Dense Fog: | 0 | Drought: | 11 |
| Dust Storm: | 0 | Flood: | 825 | Hail: | 986 | Heat: | 6 | Heavy Snow: | 84 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 35 | Landslide: | 0 | Strong Wind: | 100 |
| Thunderstorm Winds: | 3,006 | Tropical Storm: | 1 | Wildfire: | 0 | Winter Storm: | 43 | Winter Weather: | 4 |
| Other: | 139 | ||||||||
Volcanos Nearby
No volcano is found in or near Seneca Valley School District.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Seneca Valley School District.
No historical earthquake events found in or near Seneca Valley School District.
Historical Tornado Events
A total of 58 historical tornado events that had recorded magnitude of 2 or above found in or near Seneca Valley School District.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 7.1 | 1954-06-10 | 2 | 40°45'N / 80°15'W | 40°51'N / 80°11'W | 7.30 Miles | 33 Yards | 0 | 1 | 25K | 0 | Beaver |
| 8.0 | 1985-05-31 | 3 | 40°47'N / 80°09'W | 40°43'N / 79°44'W | 22.00 Miles | 243 Yards | 6 | 80 | 25.0M | 0 | Butler |
| 8.2 | 1981-07-20 | 2 | 40°51'N / 80°00'W | 0 | 0 | 250K | 0 | Butler | |||
| 8.8 | 1954-06-10 | 2 | 40°51'N / 80°11'W | 40°53'N / 80°10'W | 0 | 2 | 25K | 0 | Lawrence | ||
| 11.6 | 1985-05-31 | 3 | 40°49'N / 80°28'W | 40°47'N / 80°09'W | 17.00 Miles | 243 Yards | 3 | 40 | 25.0M | 0 | Beaver |
| 13.8 | 1956-05-12 | 2 | 40°37'N / 80°17'W | 0 | 0 | 250K | 0 | Beaver | |||
| 18.9 | 1981-04-28 | 2 | 40°44'N / 79°44'W | 0.50 Mile | 33 Yards | 0 | 0 | 25K | 0 | Butler | |
| 21.0 | 1954-06-01 | 2 | 40°55'N / 79°48'W | 40°57'N / 79°44'W | 3.00 Miles | 150 Yards | 0 | 0 | 25K | 0 | Butler |
| 21.5 | 1980-06-03 | 4 | 40°39'N / 79°44'W | 40°37'N / 79°42'W | 1.90 Miles | 33 Yards | 0 | 20 | 250.0M | 0 | Allegheny |
| 21.5 | 1977-09-24 | 2 | 41°00'N / 80°21'W | 0 | 0 | 2.5M | 0 | Lawrence | |||
| 25.3 | 1992-08-08 | 2 | 41°04'N / 80°21'W | 2.00 Miles | 150 Yards | 0 | 0 | 25K | 0 | Lawrence | |
| 26.2 | 1986-10-03 | 2 | 41°08'N / 80°14'W | 41°08'N / 80°02'W | 9.00 Miles | 123 Yards | 0 | 0 | 2.5M | 0 | Mercer |
| 26.6 | 1980-06-03 | 4 | 40°37'N / 79°42'W | 40°36'N / 79°33'W | 7.60 Miles | 33 Yards | 0 | 0 | 250.0M | 0 | Westmoreland |
| 27.7 | 1967-07-24 | 2 | 40°49'N / 80°41'W | 40°49'N / 80°33'W | 6.50 Miles | 277 Yards | 0 | 2 | 250K | 0 | Columbiana |
| 28.1 | 1975-06-04 | 2 | 40°35'N / 80°13'W | 40°11'N / 79°32'W | 45.30 Miles | 30 Yards | 0 | 0 | 0K | 0 | Beaver |
| 29.4 | 1956-05-13 | 2 | 40°22'N / 79°52'W | 0.70 Mile | 200 Yards | 0 | 5 | 250K | 0 | Allegheny | |
| 29.9 | 2001-04-09 | 2 | 41°02'N / 80°32'W | 41°02'N / 80°32'W | 4.00 Miles | 75 Yards | 0 | 0 | 200K | 0 | Mahoning |
| Brief Description: A weak F2 tornado touched down near Lowellville in eastern Mahoning County. The tornado had a intermittent damage path approximately four miles in length and 75 yards in width. Two homes, one business and two garages suffered significant damage with around a dozen other homes sustaining minor damage. | |||||||||||
| 31.3 | 1992-08-08 | 2 | 41°06'N / 80°29'W | 1.50 Miles | 100 Yards | 0 | 11 | 250K | 0 | Lawrence | |
| 31.9 | 1980-06-03 | 4 | 40°36'N / 79°33'W | 40°35'N / 79°30'W | 2.30 Miles | 33 Yards | 0 | 120 | 250.0M | 0 | Armstrong |
| 32.2 | 1963-08-03 | 3 | 40°19'N / 79°53'W | 2 | 70 | 25.0M | 0 | Allegheny | |||
| 33.3 | 1985-05-31 | 2 | 40°53'N / 80°51'W | 40°50'N / 80°35'W | 15.00 Miles | 220 Yards | 0 | 20 | 25.0M | 0 | Columbiana |
| 33.8 | 1964-06-15 | 2 | 41°14'N / 80°14'W | 0 | 4 | 250K | 0 | Mercer | |||
| 34.5 | 1985-05-31 | 5 | 41°12'N / 80°29'W | 41°13'N / 80°16'W | 12.00 Miles | 450 Yards | 8 | 60 | 250K | 0 | Mercer |
| 34.8 | 1983-05-22 | 2 | 40°17'N / 79°53'W | 40°18'N / 79°47'W | 5.00 Miles | 200 Yards | 0 | 0 | 2.5M | 0 | Allegheny |
| 36.1 | 1987-06-27 | 2 | 41°04'N / 80°39'W | 1.50 Miles | 40 Yards | 0 | 0 | 250K | 0 | Mahoning | |
| 36.3 | 1985-05-31 | 2 | 41°13'N / 79°48'W | 41°12'N / 79°41'W | 6.00 Miles | 150 Yards | 0 | 1 | 0K | 0 | Venango |
| 36.3 | 1985-05-31 | 5 | 41°10'N / 80°31'W | 41°12'N / 80°29'W | 2.00 Miles | 450 Yards | 0 | 0 | 250K | 0 | Mercer |
| 36.5 | 1966-04-23 | 2 | 40°42'N / 79°24'W | 1.00 Mile | 17 Yards | 0 | 0 | 25K | 0 | Armstrong | |
| 36.8 | 1985-05-31 | 5 | 41°10'N / 80°34'W | 41°10'N / 80°31'W | 3.00 Miles | 440 Yards | 0 | 0 | 250.0M | 0 | Trumbull |
| 37.4 | 1986-09-23 | 2 | 40°58'N / 79°26'W | 0.50 Mile | 40 Yards | 0 | 1 | 2.5M | 0 | Armstrong | |
| 37.6 | 1954-06-01 | 2 | 41°18'N / 80°05'W | 0 | 3 | 3K | 0 | Mercer | |||
| 37.8 | 1963-04-19 | 2 | 41°02'N / 80°52'W | 41°02'N / 80°34'W | 15.30 Miles | 33 Yards | 0 | 0 | 250K | 0 | Mahoning |
| 38.5 | 1983-05-22 | 2 | 40°18'N / 79°47'W | 40°20'N / 79°30'W | 14.00 Miles | 200 Yards | 0 | 6 | 2.5M | 0 | Westmoreland |
| 38.6 | 1980-06-03 | 2 | 40°32'N / 79°28'W | 40°32'N / 79°22'W | 4.90 Miles | 33 Yards | 0 | 0 | 250K | 0 | Indiana |
| 39.3 | 1954-09-30 | 2 | 41°15'N / 80°28'W | 0 | 0 | 25K | 0 | Mercer | |||
| 39.6 | 1956-08-05 | 3 | 41°08'N / 80°41'W | 41°07'N / 80°40'W | 2 | 0 | 250K | 0 | Mahoning | ||
| 39.6 | 1955-03-11 | 2 | 40°53'N / 80°50'W | 1.00 Mile | 100 Yards | 0 | 0 | 250K | 0 | Columbiana | |
| 40.5 | 2002-11-10 | 2 | 41°15'N / 80°28'W | 41°20'N / 80°21'W | 7.00 Miles | 500 Yards | 1 | 19 | 1.0M | 0 | Mercer |
| Brief Description: Starting about 7:54 PM, an F2 tornado touched down near Trout Island Road, east of Sharpsville. The tornado traveled northeast at 50 mph, crossed Route 18, then ripped into Clark. It crossed Shenango River Lake and tracked to New Hamburg, where it dissipated 8:02 PM. The tornado path was 7 miles long, about 500 yards wide at its maximum, in the town of Clark. Maximum winds estimated 155 mph. Majority of damage and all injuries occurred in Clark. Fifteen homes completely destroyed, 13 major damage, 29 had minor damage. One business destroyed; 1 suffered major damage. A large number of trees were snapped or toppled. Large truck was overturned. One van was thrown across Route 258. Several other vehicles were moved by the tornado or suffered considerable damage. Strongest tornado in Mercer county since May 31,1985. M81PH | |||||||||||
| 40.8 | 1978-10-12 | 3 | 40°48'N / 80°55'W | 40°53'N / 80°49'W | 7.30 Miles | 250 Yards | 0 | 4 | 2.5M | 0 | Columbiana |
| 41.0 | 1954-06-26 | 2 | 40°15'N / 79°41'W | 0 | 4 | 25K | 0 | Westmoreland | |||
| 41.0 | 1956-08-05 | 3 | 41°09'N / 80°42'W | 41°08'N / 80°41'W | 0 | 0 | 250K | 0 | Trumbull | ||
| 42.5 | 1964-06-15 | 2 | 40°18'N / 79°33'W | 2.00 Miles | 800 Yards | 0 | 4 | 250K | 0 | Westmoreland | |
| 43.8 | 1978-06-07 | 2 | 41°09'N / 80°46'W | 41°10'N / 80°43'W | 0 | 0 | 2.5M | 0 | Trumbull | ||
| 44.2 | 1976-02-16 | 2 | 41°04'N / 80°50'W | 1.50 Miles | 600 Yards | 0 | 0 | 250K | 0 | Mahoning | |
| 44.2 | 1990-06-30 | 2 | 40°07'N / 80°09'W | 0.20 Mile | 250 Yards | 0 | 0 | 25K | 0 | Washington | |
| 44.6 | 1983-05-22 | 2 | 40°20'N / 79°30'W | 40°27'N / 79°17'W | 13.00 Miles | 200 Yards | 0 | 4 | 2.5M | 0 | Westmoreland |
| 44.6 | 1980-05-12 | 2 | 40°24'N / 79°23'W | 2.20 Miles | 20 Yards | 0 | 0 | 250K | 0 | Westmoreland | |
| 44.8 | 1954-06-01 | 2 | 41°14'N / 79°33'W | 41°15'N / 79°30'W | 0 | 0 | 3K | 0 | Clarion | ||
| 45.0 | 1985-05-31 | 4 | 41°31'N / 79°56'W | 40°44'N / 78°50'W | 12.50 Miles | 350 Yards | 8 | 40 | 25.0M | 0 | Venango |
| 45.9 | 1951-06-27 | 2 | 40°35'N / 79°15'W | 40°52'N / 79°11'W | 19.70 Miles | 33 Yards | 0 | 0 | 3K | 0 | Armstrong |
| 46.2 | 1955-03-01 | 3 | 41°16'N / 80°40'W | 2.50 Miles | 40 Yards | 1 | 6 | 250K | 0 | Mahoning | |
| 46.3 | 1981-08-07 | 2 | 41°24'N / 79°51'W | 0 | 0 | 250K | 0 | Venango | |||
| 46.9 | 1981-07-26 | 2 | 40°34'N / 79°14'W | 0 | 0 | 250K | 0 | Indiana | |||
| 47.2 | 1985-05-31 | 5 | 41°12'N / 81°02'W | 41°10'N / 80°34'W | 23.50 Miles | 440 Yards | 10 | 250 | 250.0M | 0 | Trumbull |
| 47.7 | 1976-07-11 | 3 | 40°21'N / 79°30'W | 40°16'N / 79°18'W | 11.80 Miles | 67 Yards | 1 | 17 | 2.5M | 0 | Westmoreland |
| 48.5 | 1996-07-19 | 2 | 41°05'N / 79°19'W | 41°04'N / 79°13'W | 7.50 Miles | 100 Yards | 0 | 0 | 25K | 5K | Clarion |
| Brief Description: A tornado began in Clarion County about 6 miles north of New Bethlehem. It tracked southeast into Jefferson County through Langville. The tornado lifted 1.5 miles west of Oliveburg. The tornado uprooted trees and rolled a mobile home, about a mile north of Truittsburg in Clarion County. The tornado also damaged some homes and farms, crops and downed extensive swaths of trees along its path. The tornado moved mainly in a straight line and averaged about 100 yards in width. | |||||||||||
| 48.6 | 2002-04-28 | 2 | 40°34'N / 79°14'W | 40°37'N / 79°09'W | 5.00 Miles | 250 Yards | 0 | 1 | 750K | 0 | Indiana |
| Brief Description: A storm spawning two separate tornadoes passed over southern Armstrong County, continuing eastward into Indiana County. The first tornado, an F0, touched down at approximately 2:45 PM EST just south of the town of Spring Church in Armstrong County. It traveled east about 3 miles before crossing into Indiana County approximately 1 mile east of Maysville at 2:52 PM EST. This tornado continued traveling to the east for another mile, finally dissipating near the community of Iselin at around 2:55 PM EST. The maximum estimated winds with this tornado were about 70 MPH. Damage from this first tornado included numerous trees which were toppled or snapped. A small steeple was toppled, and a swimming pool was destroyed. There were several trees toppled onto houses, and some houses suffered minor wind damage. A garage was damaged, and a house under construction was lifted off the foundation. The same storm produced another stronger tornado, an F2, which touched down in Indiana County approximately 6 miles southwest of the city of Indiana at 3:00 PM EST. This F2 traveled to the east across Center Township for approximately 5 miles, dissipating just south of Indiana at 3:06 PM EST. The estimated maximum winds were around 135 MPH. This F2 tornado produced a swath of damage as it traveled eastward across Indiana County. One house was totally destroyed, and debris from this house was blown downwind. In this same area, a car was turned over and trees were stripped of leaves. An adjacent house exhibited damage from hail or flying projectiles on several sides. The house immediately to the north of the destroyed house lost part of its east-facing roof. There were at least an additional 18 houses damaged (roofs, shingles, siding, etc.). Several garages and barns were either toppled or snapped. A large sign from a hotel was blown down onto a car sales lot. Two cars were crushed and 18 other vehicles were damaged. One moderate injury was reported with this tornado. | |||||||||||
| 49.1 | 1983-05-22 | 2 | 40°27'N / 79°17'W | 40°30'N / 79°11'W | 6.00 Miles | 200 Yards | 0 | 0 | 2.5M | 0 | Indiana |
* 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.