Ramapo Fault earthquake felt in Rockland
Thane Grauel, tgrauel@lohud.com
5 hours ago
Lamont-Doherty Earth Observatory.
The red square is the site of Friday’s earthquake along the Ramapo Fault in New Jersey.
A 2.5 magnitude earthquake shook northern New Jersey early Friday and was felt by some as far as Rockland County.
The micro earthquake occurred at 3:41 a.m.about 9 miles west-southwest of Morristown. It was felt by people at the Sloatsburg rest area on the New York State Thruway, according to tweets on Twitter. The Rockland County Sheriff’s Department and Suffern police said they did not receive any calls from the public.
July 5, 2014: Earthquake hits Hudson Highlands
Aug. 23, 2011: Virginia earthquake felt in Lower Hudson Valley
The quake occurred along the 187-mile-long Ramapo Fault, which stretches from Pennsylvania and New Jersey to Westchester County, where it runs beneath the Indian Point nuclear power plant in Buchanan. It occurred 3.4 miles beneath the Earth’s surface, according to information on a seismology webpage maintained the Lamont-Doherty Earth Observatory in Palisades.
If you felt the quake, the United State Geologic Survey has a place to post your information.
HISTORY OF QUAKES IN LOWER HUDSON VALLEY
1783 — The epicenter of a magnitude 5.0 earthquake may have been the Westchester-Putnam county line and was felt as far south as Philadelphia.
1884 — A magnitude 5.2 earthquake was centered off Rockaway, Queens, causing property damage but no injuries to people. A dead dog was reported.
1970 to 1987 — Between these years, instruments at the Lamont-Doherty Observatory in Rockland County recorded 21 quakes in Westchester and two in Manhattan.
October 1985 — A magnitude 4.0 earthquake was centered in an unincorporated part of Greenburgh between Ardsley and Yonkers. Tremors shook the metropolitan area and were felt in Philadelphia, southern Canada and Long Island.
November 1988 — A quake 90 miles north of Quebec City in eastern Canada registered magnitude 6.0 with tremors felt in the Lower Hudson Valley and New York City.
June 1991 — A 4.4-magnitude quake struck west of Albany, rattling homes.
April 1991 — A quake registering between magnitude 2.0 and 2.6 struck Westchester and Fairfield, Conn. It lasted just five seconds and caused no damage.
January 2003 — Two small earthquakes struck the area surrounding Hastings-on-Hudson. One was a magnitude of 1.2, the other 1.4.
March 2006 — Two earthquakes struck Rockland. The first, at 1.1 magnitude, hit 3.3 miles southwest of Pearl River; the second, 1.3 magnitude, was centered in the West Nyack-Blauvelt-Pearl River area.
July 2014 — “Micro earthquake” struck, 3.1 miles beneath the Appalachian Trail in a heavily wooded area of Garrison.
Thane Grauel, tgrauel@lohud.com
5 hours ago
Lamont-Doherty Earth Observatory.
The red square is the site of Friday’s earthquake along the Ramapo Fault in New Jersey.
A 2.5 magnitude earthquake shook northern New Jersey early Friday and was felt by some as far as Rockland County.
The micro earthquake occurred at 3:41 a.m.about 9 miles west-southwest of Morristown. It was felt by people at the Sloatsburg rest area on the New York State Thruway, according to tweets on Twitter. The Rockland County Sheriff’s Department and Suffern police said they did not receive any calls from the public.
July 5, 2014: Earthquake hits Hudson Highlands
Aug. 23, 2011: Virginia earthquake felt in Lower Hudson Valley
The quake occurred along the 187-mile-long Ramapo Fault, which stretches from Pennsylvania and New Jersey to Westchester County, where it runs beneath the Indian Point nuclear power plant in Buchanan. It occurred 3.4 miles beneath the Earth’s surface, according to information on a seismology webpage maintained the Lamont-Doherty Earth Observatory in Palisades.
If you felt the quake, the United State Geologic Survey has a place to post your information.
HISTORY OF QUAKES IN LOWER HUDSON VALLEY
1783 — The epicenter of a magnitude 5.0 earthquake may have been the Westchester-Putnam county line and was felt as far south as Philadelphia.
1884 — A magnitude 5.2 earthquake was centered off Rockaway, Queens, causing property damage but no injuries to people. A dead dog was reported.
1970 to 1987 — Between these years, instruments at the Lamont-Doherty Observatory in Rockland County recorded 21 quakes in Westchester and two in Manhattan.
October 1985 — A magnitude 4.0 earthquake was centered in an unincorporated part of Greenburgh between Ardsley and Yonkers. Tremors shook the metropolitan area and were felt in Philadelphia, southern Canada and Long Island.
November 1988 — A quake 90 miles north of Quebec City in eastern Canada registered magnitude 6.0 with tremors felt in the Lower Hudson Valley and New York City.
June 1991 — A 4.4-magnitude quake struck west of Albany, rattling homes.
April 1991 — A quake registering between magnitude 2.0 and 2.6 struck Westchester and Fairfield, Conn. It lasted just five seconds and caused no damage.
January 2003 — Two small earthquakes struck the area surrounding Hastings-on-Hudson. One was a magnitude of 1.2, the other 1.4.
March 2006 — Two earthquakes struck Rockland. The first, at 1.1 magnitude, hit 3.3 miles southwest of Pearl River; the second, 1.3 magnitude, was centered in the West Nyack-Blauvelt-Pearl River area.
July 2014 — “Micro earthquake” struck, 3.1 miles beneath the Appalachian Trail in a heavily wooded area of Garrison.
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