Clarion, PA Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Clarion is about the same as Pennsylvania average and is much lower than the national average. The risk of tornado damage in Clarion is about the same as Pennsylvania average and is lower than the national average.
Earthquake Index, #2387
| Clarion, PA | 0.00 |
| 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
| Clarion, PA | 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, #1216
| Clarion, PA | 108.76 |
| 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 2,961 other weather extremes events within 50 miles of Clarion, PA 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: | 18 | Dense Fog: | 0 | Drought: | 9 |
| Dust Storm: | 0 | Flood: | 413 | Hail: | 444 | Heat: | 4 | Heavy Snow: | 130 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 28 | Landslide: | 0 | Strong Wind: | 83 |
| Thunderstorm Winds: | 1,697 | Tropical Storm: | 1 | Wildfire: | 0 | Winter Storm: | 45 | Winter Weather: | 2 |
| Other: | 82 | ||||||||
Volcanos Nearby
No volcano is found in or near Clarion, PA.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Clarion, PA.
No historical earthquake events found in or near Clarion, PA.
Historical Tornado Events
A total of 45 historical tornado events that had recorded magnitude of 2 or above found in or near Clarion, PA.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 5.8 | 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 |
| 7.8 | 1954-06-01 | 2 | 41°14'N / 79°33'W | 41°15'N / 79°30'W | 0 | 0 | 3K | 0 | Clarion | ||
| 11.0 | 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. | |||||||||||
| 13.8 | 1985-05-31 | 4 | 40°44'N / 78°50'W | 41°26'N / 79°31'W | 11.00 Miles | 350 Yards | 0 | 5 | 25.0M | 0 | Venango |
| 16.5 | 1985-05-31 | 4 | 41°26'N / 79°31'W | 41°26'N / 79°28'W | 3.00 Miles | 350 Yards | 0 | 0 | 25.0M | 0 | Forest |
| 17.0 | 1986-09-23 | 2 | 40°58'N / 79°26'W | 0.50 Mile | 40 Yards | 0 | 1 | 2.5M | 0 | Armstrong | |
| 17.8 | 1996-07-19 | 2 | 41°04'N / 79°13'W | 40°59'N / 79°04'W | 2.50 Miles | 100 Yards | 0 | 0 | 25K | 5K | Jefferson |
| 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. | |||||||||||
| 17.8 | 1976-07-11 | 2 | 41°19'N / 79°12'W | 40°58'N / 78°54'W | 28.70 Miles | 33 Yards | 1 | 7 | 250K | 0 | Jefferson |
| 18.8 | 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 |
| 20.4 | 1985-05-31 | 4 | 41°31'N / 79°32'W | 41°27'N / 78°56'W | 25.00 Miles | 800 Yards | 7 | 30 | 0K | 0 | Forest |
| 24.5 | 1985-05-31 | 4 | 41°33'N / 79°37'W | 41°31'N / 79°32'W | 4.00 Miles | 800 Yards | 0 | 0 | 0K | 0 | Venango |
| 27.7 | 1981-08-07 | 2 | 41°24'N / 79°51'W | 0 | 0 | 250K | 0 | Venango | |||
| 27.7 | 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 |
| 31.7 | 1985-05-31 | 3 | 41°41'N / 79°29'W | 41°39'N / 79°09'W | 17.00 Miles | 800 Yards | 0 | 8 | 0K | 0 | Warren |
| 34.0 | 1985-05-31 | 2 | 41°34'N / 78°57'W | 41°35'N / 78°56'W | 1.50 Miles | 300 Yards | 0 | 0 | 0K | 0 | Forest |
| 34.5 | 1981-07-28 | 2 | 41°37'N / 79°46'W | 2.00 Miles | 33 Yards | 0 | 4 | 250K | 0 | Crawford | |
| 34.5 | 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 |
| 34.9 | 1996-07-19 | 2 | 40°55'N / 78°55'W | 40°52'N / 78°48'W | 6.50 Miles | 200 Yards | 0 | 3 | 200K | 10K | Indiana |
| Brief Description: A tornado touched down in Jefferson County and traveled southeast into northeast Indiana County, the tornado continued into the State Game Lands and exited Indiana County 4 miles north-north east of Glen Campbell and then entered Clearfield County. The tornado's path was 200 feet wide at its greatest width in Indiana County. Just some tree damage occurred in Jefferson County. The tornado strengthened and caused greater damage in Indiana County. Just east of Rossiter, the tornado tore the roof off of a barn. A child, playing outside, sought shelter in the barn. The roof lifted off and three of the four walls collapsed. The child was not injured. A horse that was inside the barn was sucked out and carried approximately 75 feet in the air into a field. The tornado traveled then traveled up a hill and significantly damaged one mobile home and destroyed a second. The second mobile home was carried at least 75 yards across a road and smashed against a row of trees. Three people were inside the mobile home and were injured, one critically. The tornado at this time was at it's strongest, at the upper end of F2. A nearby wood frame house was destroyed and dense areas of trees were felled or snapped. About a dozen homes sustained damage along the path, 5 were damaged extensively. Thirty pound cinder blocks from a garage were thrown approximately 300 yards up a nearby hill where a stronger suction vortex was noted. The tornado tracked into the State Game Lands and a 50 yard path of downed and twisted 100 to 150 foot trees was noted into the densely forested region. | |||||||||||
| 35.2 | 1966-04-23 | 2 | 40°42'N / 79°24'W | 1.00 Mile | 17 Yards | 0 | 0 | 25K | 0 | Armstrong | |
| 35.8 | 1985-05-31 | 4 | 41°38'N / 79°02'W | 41°38'N / 78°56'W | 3.50 Miles | 1000 Yards | 0 | 0 | 0K | 0 | Warren |
| 37.0 | 1954-06-01 | 2 | 41°18'N / 80°05'W | 0 | 3 | 3K | 0 | Mercer | |||
| 37.7 | 1981-04-28 | 2 | 40°44'N / 79°44'W | 0.50 Mile | 33 Yards | 0 | 0 | 25K | 0 | Butler | |
| 38.2 | 1985-05-31 | 2 | 41°35'N / 78°56'W | 41°37'N / 78°47'W | 10.50 Miles | 300 Yards | 0 | 0 | 0K | 0 | Elk |
| 39.5 | 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 |
| 39.8 | 1985-05-31 | 4 | 41°38'N / 78°56'W | 41°40'N / 78°50'W | 7.50 Miles | 1000 Yards | 0 | 0 | 0K | 0 | Mckean |
| 40.5 | 1985-05-31 | 3 | 41°43'N / 79°48'W | 41°45'N / 79°40'W | 8.00 Miles | 427 Yards | 0 | 0 | 2.5M | 0 | Crawford |
| 40.7 | 1981-07-20 | 2 | 40°51'N / 80°00'W | 0 | 0 | 250K | 0 | Butler | |||
| 40.9 | 1963-09-03 | 3 | 41°25'N / 78°44'W | 41°27'N / 78°34'W | 8.40 Miles | 100 Yards | 0 | 20 | 2.5M | 0 | Elk |
| 43.2 | 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 |
| 43.3 | 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 |
| 43.4 | 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 |
| 43.5 | 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 |
| 43.6 | 2004-05-25 | 2 | 41°32'N / 80°10'W | 41°31'N / 80°03'W | 7.00 Miles | 50 Yards | 0 | 0 | 3.5M | 0 | Crawford |
| Brief Description: An F2 tornado touched down three miles west of Custards and then tracked east for seven miles. The tornado finally lifted just west of Cochranton near U.S Highway 322. The damage path was continuous, up to 50 yards in width and roughly parallel to State Route 285. Significant damage occurred along the damage path. At least ten homes were damaged with two large farm buildings destroyed. Two factories west of Custards along Delano Road were also heavily damaged. One factory lost over 16,000 square feet of roofing and had much of it's inventory destroyed. The second factory was also heavily damaged on one side. Twelve semi trailers parked outside this factory were overturned and destroyed. Several dozen workers inside the factories had sought shelter prior to the arrival of the tornado and were uninjured. Hundreds of trees and dozens of power poles were downed along the damage path. | |||||||||||
| 43.8 | 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. | |||||||||||
| 44.0 | 1985-05-31 | 4 | 41°40'N / 78°50'W | 41°38'N / 78°42'W | 6.50 Miles | 1000 Yards | 4 | 40 | 0K | 0 | Mckean |
| 44.3 | 1964-06-15 | 2 | 41°14'N / 80°14'W | 0 | 4 | 250K | 0 | Mercer | |||
| 44.4 | 1972-05-02 | 3 | 41°29'N / 80°12'W | 41°33'N / 80°04'W | 7.90 Miles | 33 Yards | 0 | 3 | 25K | 0 | Crawford |
| 45.0 | 1981-07-26 | 2 | 40°34'N / 79°14'W | 0 | 0 | 250K | 0 | Indiana | |||
| 45.5 | 1985-05-31 | 2 | 41°37'N / 78°47'W | 41°40'N / 78°39'W | 7.00 Miles | 300 Yards | 0 | 0 | 0K | 0 | Mckean |
| 45.8 | 1985-05-31 | 4 | 41°29'N / 80°25'W | 41°31'N / 79°56'W | 22.50 Miles | 350 Yards | 8 | 75 | 25.0M | 0 | Crawford |
| 45.9 | 1985-05-31 | 3 | 41°42'N / 80°09'W | 41°45'N / 79°44'W | 23.00 Miles | 277 Yards | 2 | 0 | 0K | 0 | Crawford |
| 46.7 | 1972-05-02 | 3 | 41°28'N / 80°13'W | 41°29'N / 80°12'W | 0 | 0 | 25K | 0 | Mercer | ||
| 46.7 | 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 |
| 47.7 | 1954-06-10 | 2 | 40°51'N / 80°11'W | 40°53'N / 80°10'W | 0 | 2 | 25K | 0 | Lawrence | ||
| 48.3 | 1985-05-31 | 4 | 41°38'N / 78°42'W | 41°33'N / 78°30'W | 11.50 Miles | 1000 Yards | 0 | 0 | 0K | 0 | Elk |
* 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.