Blackhawk School District Natural Disasters and Weather Extremes
The chance of earthquake damage in Blackhawk School District is about the same as Pennsylvania average and is much lower than the national average. The risk of tornado damage in Blackhawk School District is higher than Pennsylvania average and is about the same as the national average.
Earthquake Index, #476
| Blackhawk 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
| Blackhawk 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, #244
| Blackhawk School District | 138.68 |
| 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 5,107 other weather extremes events within 50 miles of Blackhawk 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: | 4 | Cold: | 10 | Dense Fog: | 0 | Drought: | 7 |
| Dust Storm: | 0 | Flood: | 732 | Hail: | 1,043 | Heat: | 5 | Heavy Snow: | 73 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 29 | Landslide: | 0 | Strong Wind: | 92 |
| Thunderstorm Winds: | 2,947 | Tropical Storm: | 0 | Wildfire: | 0 | Winter Storm: | 45 | Winter Weather: | 13 |
| Other: | 107 | ||||||||
Volcanos Nearby
No volcano is found in or near Blackhawk School District.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Blackhawk School District.
No historical earthquake events found in or near Blackhawk School District.
Historical Tornado Events
A total of 50 historical tornado events that had recorded magnitude of 2 or above found in or near Blackhawk School District.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 4.8 | 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 |
| 9.6 | 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 |
| 11.7 | 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 |
| 12.9 | 1956-05-12 | 2 | 40°37'N / 80°17'W | 0 | 0 | 250K | 0 | Beaver | |||
| 13.0 | 1954-06-10 | 2 | 40°51'N / 80°11'W | 40°53'N / 80°10'W | 0 | 2 | 25K | 0 | Lawrence | ||
| 15.3 | 1977-09-24 | 2 | 41°00'N / 80°21'W | 0 | 0 | 2.5M | 0 | Lawrence | |||
| 17.5 | 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 |
| 18.8 | 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. | |||||||||||
| 19.8 | 1992-08-08 | 2 | 41°04'N / 80°21'W | 2.00 Miles | 150 Yards | 0 | 0 | 25K | 0 | Lawrence | |
| 21.3 | 1981-07-20 | 2 | 40°51'N / 80°00'W | 0 | 0 | 250K | 0 | Butler | |||
| 22.4 | 1992-08-08 | 2 | 41°06'N / 80°29'W | 1.50 Miles | 100 Yards | 0 | 11 | 250K | 0 | Lawrence | |
| 23.7 | 1987-06-27 | 2 | 41°04'N / 80°39'W | 1.50 Miles | 40 Yards | 0 | 0 | 250K | 0 | Mahoning | |
| 23.8 | 1955-03-11 | 2 | 40°53'N / 80°50'W | 1.00 Mile | 100 Yards | 0 | 0 | 250K | 0 | Columbiana | |
| 24.0 | 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 |
| 24.1 | 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 |
| 24.8 | 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 |
| 27.6 | 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 |
| 27.8 | 1956-08-05 | 3 | 41°08'N / 80°41'W | 41°07'N / 80°40'W | 2 | 0 | 250K | 0 | Mahoning | ||
| 27.9 | 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 |
| 28.2 | 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 |
| 29.2 | 1956-08-05 | 3 | 41°09'N / 80°42'W | 41°08'N / 80°41'W | 0 | 0 | 250K | 0 | Trumbull | ||
| 29.5 | 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 |
| 30.1 | 1976-02-16 | 2 | 41°04'N / 80°50'W | 1.50 Miles | 600 Yards | 0 | 0 | 250K | 0 | Mahoning | |
| 31.6 | 1978-06-07 | 2 | 41°09'N / 80°46'W | 41°10'N / 80°43'W | 0 | 0 | 2.5M | 0 | Trumbull | ||
| 32.3 | 1964-06-15 | 2 | 41°14'N / 80°14'W | 0 | 4 | 250K | 0 | Mercer | |||
| 32.5 | 1954-09-30 | 2 | 41°15'N / 80°28'W | 0 | 0 | 25K | 0 | Mercer | |||
| 34.6 | 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 |
| 34.8 | 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 |
| 34.9 | 1981-04-28 | 2 | 40°44'N / 79°44'W | 0.50 Mile | 33 Yards | 0 | 0 | 25K | 0 | Butler | |
| 35.2 | 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 | |||||||||||
| 36.3 | 1955-03-01 | 3 | 41°16'N / 80°40'W | 2.50 Miles | 40 Yards | 1 | 6 | 250K | 0 | Mahoning | |
| 37.1 | 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 |
| 38.8 | 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 |
| 39.4 | 1954-06-01 | 2 | 41°18'N / 80°05'W | 0 | 3 | 3K | 0 | Mercer | |||
| 39.4 | 1954-09-30 | 2 | 40°45'N / 81°09'W | 1 | 3 | 25K | 0 | Carroll | |||
| 40.0 | 1956-05-13 | 2 | 40°22'N / 79°52'W | 0.70 Mile | 200 Yards | 0 | 5 | 250K | 0 | Allegheny | |
| 41.6 | 1965-11-16 | 2 | 40°48'N / 81°15'W | 40°50'N / 81°08'W | 5.90 Miles | 300 Yards | 2 | 9 | 2.5M | 0 | Stark |
| 41.9 | 1963-08-03 | 3 | 40°19'N / 79°53'W | 2 | 70 | 25.0M | 0 | Allegheny | |||
| 42.2 | 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 |
| 45.0 | 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 |
| 45.1 | 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 |
| 46.3 | 1985-05-31 | 5 | 41°12'N / 81°09'W | 41°12'N / 81°02'W | 6.50 Miles | 440 Yards | 0 | 0 | 250.0M | 0 | Portage |
| 46.6 | 1992-07-12 | 2 | 41°03'N / 81°13'W | 1.00 Mile | 100 Yards | 0 | 0 | 250K | 0 | Portage | |
| 46.6 | 1954-04-27 | 2 | 40°13'N / 80°53'W | 1.00 Mile | 33 Yards | 0 | 1 | 250K | 0 | Jefferson | |
| 46.7 | 2000-05-23 | 2 | 40°21'N / 81°05'W | 40°20'N / 81°04'W | 3.00 Miles | 200 Yards | 0 | 0 | 100K | 0 | Harrison |
| Brief Description: An F2 tornado with maximum winds estimated at 120 MPH passed through a 3-mile section of rural Harrison County. The tornado passed over only one residence as it moved to the east but destroyed several items on the property, including a cinder-block garage, a wooden barn, and several outbuildings. A parked truck was lifted and turned about 90 degrees but was otherwise undamaged. There were several large sections of heavily wooded area along the tornado's path which were completely cleared of trees. No injuries or fatalities were reported. | |||||||||||
| 47.5 | 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 |
| 47.7 | 1990-06-30 | 2 | 40°07'N / 80°09'W | 0.20 Mile | 250 Yards | 0 | 0 | 25K | 0 | Washington | |
| 48.6 | 1985-05-31 | 4 | 41°29'N / 80°31'W | 41°29'N / 80°25'W | 7.00 Miles | 350 Yards | 0 | 5 | 25.0M | 0 | Mercer |
| 48.8 | 1985-05-31 | 4 | 41°29'N / 80°31'W | 41°29'N / 80°31'W | 0.20 Mile | 300 Yards | 0 | 0 | 25K | 0 | Trumbull |
| 48.9 | 1972-05-02 | 3 | 41°28'N / 80°13'W | 41°29'N / 80°12'W | 0 | 0 | 25K | 0 | Mercer | ||
* 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.