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AMERICANALMANAC (Jack Newsome) - Magnitude 4.2 temblor rattles Seattle area as thousands feel Puget Sound shaking

A magnitude 4.2 earthquake hit just miles from Seattle on Tuesday, felt by over 5,000 across Puget Sound with no damage reported, a clear jolt that recalls the region's larger seismic threats. The US Geological Survey recorded the quake at 5:05 p.m. ET on Tuesday, September 29, roughly 22 miles from Seattle. Residents across the […] The post Magnitude 4.2 temblor rattles Seattle area as thousands feel Puget Sound shaking appeared first on American Almanac .

A magnitude 4.2 earthquake hit just miles from Seattle on Tuesday, felt by over 5,000 across Puget Sound with no damage reported, a clear jolt that recalls the region's larger seismic threats. The US Geological Survey recorded the quake at 5:05 p.m. ET on Tuesday, September 29, roughly 22 miles from Seattle. Residents across the Puget Sound area, including Tacoma and the state capital of Olympia, reported the shaking in the first hour. Daily Mail reporting laid out the basic facts: the vast majority of those more than 5,000 accounts described the motion as weak to light, and no injuries or damaged buildings had been reported. Seattle itself is home to 784,000 people. Small earthquakes occur regularly in the Puget Sound region. Events…Open

According to FEMA projections, what is the potential damage to infrastructure in the event of a major Cascadia earthquake?
FEMA calculates that in a major Cascadia scenario, 85 percent of ports and drinking water plants would be seriously damaged or destroyed, and 77 percent of the region's airports, railways, schools, and hospitals would face similar levels of damage or destruction.
Q&A ID 001284c0-fdfc-48d0-9c63-4f7f9cb057ab
What are the historical characteristics and projected risks associated with the Cascadia Subduction Zone?
The Cascadia Subduction Zone is a plate boundary where the Juan de Fuca Plate pushes beneath the North American Plate; it has historically produced magnitude 8.0 or larger earthquakes every 400 to 600 years, with the last major event occurring in 1700. Scientists believe it can generate a magnitude 9.0 earthquake.
Q&A ID 62f7d5c1-0e97-45d9-ad69-7535d57e1ff3
How does the magnitude 4.2 earthquake compare to the historic 2001 Nisqually event in terms of impact?
The 2001 Nisqually earthquake was a magnitude 6.8 event that injured hundreds of people and produced billions of dollars in damage, whereas the magnitude 4.2 shake on Tuesday produced no injuries or damage.
Q&A ID 0c589dc1-95e9-424c-b7af-45e47c1d7983
What is the USGS assessment regarding the likelihood of aftershocks following the magnitude 4.2 temblor in the Seattle area?
The USGS noted there was approximately a one-in-four chance of an aftershock stronger than magnitude 3.0 occurring in the following day.
Q&A ID 13520c23-7636-4ad5-a40c-5e141f07d5cc
What were the reported impacts and damage following the magnitude 4.2 earthquake near Seattle?
The earthquake was felt by over 5,000 people across Puget Sound, including residents in Tacoma and Olympia, but no injuries or damaged buildings were reported, and the motion was described by the majority as weak to light.
Q&A ID 34a9a05a-a86e-4914-9110-43baa8d21f3a
When and where did the magnitude 4.2 earthquake occur that was felt by thousands in the Puget Sound area?
The earthquake occurred at 5:05 p.m. ET on Tuesday, September 29, and was recorded by the US Geological Survey as being roughly 22 miles from Seattle.
Q&A ID 5d9f787e-724b-44a1-921f-84876a75f930
Keywordsearthquakeseismic-activityseattlepuget-soundwashingtonusgsnatural-disastercascadia-subduction-zonecaliforniabay-areaemergencyus-newspublic-safetygeologytremoraftershockfermainfrastructuresan-franciscoolympiatacomaseismic-hazardbreaking-newsusa