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Usgs

All articles tagged with #usgs

local-news10 days ago

Puget Sound Quake Rattles Region, Prompting Transit Delays and Seismic Risk Debate

A 4.2-magnitude earthquake struck near Port Orchard, Washington, on Tuesday afternoon, causing widespread shaking across the Puget Sound region. The tremor, which occurred at a depth of roughly 16.7 miles, was felt from Issaquah to Olympia, with over 6,000 people reporting the event. While no injuries or significant damage were reported, the quake prompted temporary disruptions to Sound Transit services and reignited public discussion regarding the region's seismic vulnerabilities, particularly concerning the Seattle Fault.

via MyNorthwest.com|
#earthquake#local-news#puget-sound
4.2-magnitude quake rattles Puget Sound from Seattle to Olympia, no damage reported
local-news10 days ago

4.2-magnitude quake rattles Puget Sound from Seattle to Olympia, no damage reported

A magnitude 4.2 earthquake struck the Puget Sound region on Tuesday afternoon, centered near Wauna, Washington. The tremor was widely felt across the region, including in Seattle, Tacoma, and Olympia, but no injuries or significant damage were reported. The U.S. Geological Survey estimates a 37% chance of a magnitude 3 aftershock within the next week.

via KOMO|
#earthquake#gig-harbor#local-news
science25 days ago

Kīlauea Edges Toward Episode 55 as Precursory Activity Extends

Kīlauea remains in the eruption’s longest precursory phase, with overnight spatter bursts at the north vent forming a spatter cone (35–70 ft) as tremor stays steady and summit inflation stays high; the USGS notes episode 55 fountaining is likely today or tomorrow if conditions remain favorable, with inflation above the episode 54 starting point. The Volcano Alert Level remains WATCH and Aviation Color Code ORANGE.

via Big Island Video News|
#eruption#halemaumau#kilauea
science29 days ago

Kīlauea Eruption Update: Irregular Summit Inflation Persists Amid Ongoing Lava Overflows

USGS reports intermittent, low-level lava activity at Kīlauea's Halemaʻumaʻu summit with no net inflation; about 50 lava overflows since Sept 7 and a forecast window for episode 55 lava fountaining between Sept 10–11; summit inflation has been irregular since Aug 25, with tremor and SO2 emissions continuing as scientists monitor potential upcoming activity and possible gas/ash impacts.

via Big Island Video News|
#halemaumau#hawaii#kilauea
science1 month ago

Kīlauea Maintains Low-Level Summit Activity Ahead of Possible Episode 55

USGS HVO reports ongoing precursory, low-level lava activity at Kīlauea's summit in Halemaʻumaʻu with 29 north-vent overflows since Sept 7, fed by a 5–10 m dome fountain and forming two main flows that reached about 0.5 miles southwest and less than 0.5 miles northeast of the vent. Tremor persists, and summit reinflation has been unsteady since the Aug. 25 lava fountaining (episode 54), peaking Sept. 7 and then stalling. SO2 emissions run 1,000–5,000 t/day; trade winds are weak and the plume drifts southwest. Forecasters previously noted a Sept. 8–10 window for the start of Episode 55 high lava fountaining.

via Big Island Video News|
#hawaii#kilauea#lava-overflow
science1 month ago

Kīlauea Poised for Next Eruption Phase as USGS Monitors Precursory Lava Activity

USGS webcams show precursory, low-level lava activity at Kīlauea's Halemaʻumaʻu summit starting Monday, with irregular inflation and brief dome fountains. The alert level was raised to WATCH and the Aviation Color Code to ORANGE in anticipation of a future high lava fountaining episode. By Tuesday morning, activity paused with summit deflation; ten overflows produced two lava lobes about a kilometer from the north vent. Reinflation remains irregular, and a September 8–10 forecast window for the next episode is likely if inflation resumes.

via Big Island Video News|
#halemaumau#kilauea#orange-alert
Light LA quake rattles Compton on Newport-Inglewood fault
california1 month ago

Light LA quake rattles Compton on Newport-Inglewood fault

A magnitude-3.2 earthquake struck near Compton early Sunday, delivering light shaking across southern Los Angeles. The epicenter was about three miles south-southeast of Compton at a depth of roughly eight miles, with people feeling it as far as Santa Clarita; no damage was reported. The event occurred on the Newport-Inglewood Fault, a major urban fault that has produced significant earthquakes in the past, highlighting ongoing seismic risk in the region.

via Los Angeles Times|
#california#compton#earthquake
Small LA quake near Compton sparks big fault-line fears
us-news1 month ago

Small LA quake near Compton sparks big fault-line fears

An overnight 3.2-magnitude earthquake struck near Compton in Los Angeles' South Bay, with a depth of about 8 miles; there were no injuries or damage reported, though residents felt the tremor. Scientists warn Southern California sits atop major fault systems (San Andreas and San Jacinto) and that a larger quake could occur in the future, potentially near magnitude 7.5, especially around Cajon Pass where faults intersect. The region's seismic history includes deadly quakes such as Northridge (1994) and San Fernando (1971).

via New York Post|
#california#compton#earthquakes
Indonesia hit by 7.7 quake sparking local tsunami warning
world1 month ago

Indonesia hit by 7.7 quake sparking local tsunami warning

Indonesia issued a local tsunami warning after a 7.7-magnitude earthquake near Flores Island, followed by three aftershocks (5.9, 5.6, 6.1). Authorities urged coastal residents to move to higher ground and avoid beaches, while Australia reported no tsunami threat for now. The USGS warned casualties and damage are possible, with about 500,000 people exposed to very strong shaking; Indonesia sits on the Ring of Fire and has a history of major quakes, including the 2004 Sumatra disaster.

via CNN|
#earthquake#flores-island#indonesia
Bay Area’s Hayward Fault: a ticking time bomb for a major earthquake
science1 month ago

Bay Area’s Hayward Fault: a ticking time bomb for a major earthquake

Experts warn the Hayward Fault near the Bay Area is overdue for a major quake; recent 3.8 temblor near Oakland and aftershocks highlight its volatility, while simulations show a magnitude-7 rupture could produce significantly stronger shaking across the region. USGS estimates a 14.3% chance of a 6.7+ quake by 2034 and about 33% before 2043. A major rupture could bring hundreds of fires, tens of thousands of destroyed homes, and hundreds of thousands displaced, though no major damage was reported in Thursday’s quake.

via New York Post|
#bay-area#earthquakes#ground-shaking