Worldwide Volcano earthquakes and Volcano earthquake notifications – USA / Washington

Last update: July 4, 2012 at 5:34 pm by By

Washington - Mount Saint Helens – latest activity : 1980 to present
Prior to 1980, Mount St. Helens formed a conical, youthful volcano sometimes known as the Fuji-san of America. During the 1980 eruption the upper 400 m of the summit was removed by slope failure, leaving a 2 x 3.5 km horseshoe-shaped crater now partially filled by a lava dome. Mount St. Helens was formed during nine eruptive periods beginning about 40-50,000 years ago and has been the most active volcano in the Cascade Range during the Holocene. Prior to 2200 years ago, tephra, lava domes, and pyroclastic flows were erupted, forming the older St. Helens edifice, but few lava flows extended beyond the base of the volcano. The modern edifice was constructed during the last 2200 years, when the volcano produced basaltic as well as andesitic and dacitic products from summit and flank vents. Historical eruptions in the 19th century originated from the Goat Rocks area on the north flank, and were witnessed by early settlers.
(some text & images : Smithsonian Institution)

SRC Location UTC Date/time M D INFO
USGS Amboy, Washington Aug 03 14:26 2.5 1 MAP I Felt It
EMSC Mt. St. Helens Area, Washington Aug 03 14:26 2.5 1 MAP I Felt It
USGS Morton, Washington Feb 14 13:41 2.5 14 MAP I Felt It
USGS Amboy, Washington Jan 28 09:20 2.6 0 MAP I Felt It
USGS Morton, Washington Jan 25 16:58 2.6 6 MAP I Felt It
USGS Morton, Washington Nov 18 15:26 2.7 14 MAP I Felt It
USGS Amboy, Washington Aug 31 09:51 2.9 0 MAP I Felt It
USGS Morton, Washington Aug 31 04:14 2.5 15 MAP I Felt It
USGS Morton, Washington Aug 24 01:12 3.1 14 MAP I Felt It INFO
  • Randle, Wa - Sitting by campfire & my chair shook!!!
  • USGS Morton, Washington Aug 24 01:08 3.4 14 MAP I Felt It
    USGS Morton, Washington Aug 23 21:38 3.7 13 MAP I Felt It INFO
  • Longview, WA - Shook the house from one side to the other!
  • Merritt BC - Sitting on my couch and it moved along with a shake and a pop. Felt through out the community, police, fire and ambulance were dispatched due to number of calls but no damage found.
  • Merritt, BC, Canada - Picture window shook hard - felt and sounded like a large bird flew straight into the window. Neighbours up and down the street ran outside wondering what had happened. Nothing like any quake I have felt before.
  • Merritt, BC - Felt the bed/house shake for a few seconds last night. Big enough to make us pay attention, small enough for us to be confused about it!
  • Merritt - the whole house shook, baby and hubby slept right through it!
  • Merritt BC - Friday Aug 23 house shook. Granite Ave.
  • Merritt BC - Felt like a truck had driven into the building. A short hard bang/crash like a tree had fallen on the building
  • Merritt BC - Sounded/felt like someone dropped something heavy in the apartment upstairs.
  • Merritt, British Columbia Canada - Whole house shook for about 5 seconds. Left the ground beneath the house was shaking similar to the vibration of a jack hammer.
  • Merritt BC - Felt and heard rumble for about 3 seconds
  • Merritt British Columbia - It shuck my husbands chair in the den.
  • Merritt, B.C. - Yeah it felt like that a car crashed into my house but when I watched the news this morning I found out it was an earthquake of 3.6, In Washington USA
  • Hockinson - It was very brief (3-5 seconds, maybe) but definitely felt it while I was on the second story of our house. Nothing was shaken out of place.
  • Glenoma - This one surprised me for sure. My computer moved about 2 inches and water was splashing around in my aquarium.
  • The Dalles, OR - I thought thunder had slightly shook the floor of my house. never had before and we were experiencing strong thunder that evening. found out at work on monday others had felt it and there had been a quake that day.
  • Iron Creek campground - Was sitting around the campfire at Iron Creek campground outside of Randle and for a quick second felt my chair lift up then down. Person sitting directly across from me felt it also but not the other 3 sitting around the campfire.
  • Mossyrock Wa. - Noise like a tree hitting the ground, then a sharp jolt rattling the house, over within a second
  • USGS Morton, Washington Aug 23 21:38 3.6 15 MAP I Felt It INFO
  • Cougar, WA - Everything rattled, though nothing was moved out of its place or fell.
  • Battle Ground - I could hear the house creak slightly and some dishes on the table rattled.
  • randle - house shook
  • Longview wa - sudden jolt, shook my small house...over within a split second. Sure upset my Lab dog.
  • Randle - Barely felt the house shake
  • Merritt BC Canada - Windows and doors shook for about four seconds
  • Tacoma - I was at the NW Quilt Show in the Tacoma Convention Center. My friend and I decided to take a break and found some chairs positioned near the windows on the third floor of the building. As we sat there and visited, I felt a movement of the building, a shaking that was very gentle (not at all like the other earthquakes I have experienced. I mentioned it to the ladies at my table and only two of us out of eight felt the shaking. Then it was gone.
  • Merritt BC - Vibration started underneath me, it was like sitting on a vibrating road packer. The shake seemed to be more up and down thanside-ways vibrating. It shook the heavy sofa I was sitting on. Our picture window shook hard. Not completely sure but the SHAKE seemed to effect the front part of our house, moreso than than the back side of our home.
  • couger - went through quick, slight rumble then gone.
  • USGS Morton, Washington Aug 08 19:13 2.5 14 MAP I Felt It
    USGS Morton, Washington Aug 03 02:11 3.1 14 MAP I Felt It INFO
  • Mossyrock, Wash. - There was no shaking, but 1 hard jolt. I thought perhaps someone had exploded something, or dropped a huge tree, but it was at that exact time, since I looked @ the clock about 7:15 and knew it had just happened a few minutes before.
  • USGS Washington Jul 09 07:48 2.5 19 MAP I Felt It
    USGS Mount St. Helens Area, Washington May 21 08:03 2.5 6 MAP I Felt It
    USGS Mount St. Helens Area, Washington Jan 31 04:01 2.6 5 MAP I Felt It
    USGS Mount St. Helens Area, Washington Nov 13 19:52 2.6 1 MAP I Felt It
    USGS Mount St. Helens Area, Washington Sep 28 13:46 2.7 9 MAP I Felt It
    USGS Washington Jul 06 01:18 2.5 12 MAP I Felt It
    USGS Mount St. Helens Area, Washington Mar 17 21:28 2.5 1 MAP I Felt It
    USGS Washington Jan 25 10:51 3.4 8 MAP I Felt It
    USGS Washington Jan 23 03:07 2.5 8 MAP I Felt It

    Washington - Mount Rainier – latest activity : 1882
    Mount Rainier, at 4392 m the highest peak in the Cascade Range, forms a dramatic backdrop to the Puget Sound region. Large Holocene mudflows from collapse of this massive, heavily glaciated andesitic volcano have reached as far as the Puget Sound lowlands. The present summit was constructed within a large crater breached to the northeast formed by collapse of the volcano during a major explosive eruption about 5600 years that produced the widespread Osceola Mudflow. Rainier has produced eruptions throughout the Holocene, including about a dozen during the past 2600 years; the largest of these occurred about 2200 years ago. The present-day summit cone is capped by two overlapping craters. Extensive hydrothermal alteration of the upper portion of the volcano has contributed to its structural weakness; an active thermal system has caused periodic melting on flank glaciers and produced an elaborate system of steam caves in the summit icecap. Reported 19th-century eruptions have not left identifiable deposits, but a phreatic eruption may have taken place as recently as 1894.
    (some text & images : Smithsonian Institution)

    SRC Location UTC Date/time M D INFO
    EMSC Washington Jul 24 11:35 2.3 1 MAP I Felt It
    USGS Eatonville, Washington Jul 22 20:01 2.6 9 MAP I Felt It
    EMSC Washington Jul 22 20:01 2.4 14 MAP I Felt It
    USGS Mount Rainier Area, Washington Aug 03 08:27 2.5 3 MAP I Felt It
    USGS Washington Mar 22 10:01 2.7 5 MAP I Felt It

    Washington - Mount Baker – latest activity : 1880
    Mount Baker, the northernmost of Washington’s volcanoes, is a 3285-m-high glacier-clad andesitic stratovolcano constructed above the east flank of the eroded mid-Pleistocene Black Buttes volcano and SW of the early Pleistocene 4.5 x 8 km rhyodacitic Kulshan caldera. With the exception of the Schreibers Meadow cinder cone on the SE flank, which formed about 9800 years ago, Holocene volcanism has been confined to the central conduit. A major magmatic eruption at Mount Baker about 6500 years ago was the largest eruptive event at the volcano during the Holocene and was accompanied by a major collapse event that produced a lahars down the Nooksack drainage. Early settlers in the Puget Sound region as far away as Victoria, British Columbia observed 19th-century activity, all of which consisted of relatively minor phreatic eruptions. Sherman Crater, the historically active crater immediately south of the summit, has been the site of increased steam emission since 1975.
    (some text & images : Smithsonian Institution)

    SRC Location UTC Date/time M D INFO
    EMSC Washington Aug 01 07:27 2.4 1 MAP I Felt It
    USGS Sedro-woolley, Washington Aug 01 07:27 2.5 0 MAP I Felt It
    USGS Mount Baker Area, Washington Dec 16 15:56 2.5 6 MAP I Felt It
    ER Mount Rainier, Washington (startup Record) Jan 01 00:00 0.1 0 MAP I Felt It

    Washington - Glacier Peak – latest activity : before 1800
    Glacier Peak, the most isolated of the Cascade volcanoes, rises to 3213 m above the rugged forested terrain of the Glacier Peak Wilderness Area in the North Cascades. Glacier Peak is a dacitic-andesitic stratovolcano with summit and flank lava domes; it resembles Mount St. Helens in its explosive vigor. More than a dozen glaciers descend its flanks, prompting its name. Although its summit towers 3000 m above surrounding valleys, the volcano was constructed above a high ridge and is itself less than 1000 m high. Repeated major explosive eruptions associated with lava dome growth during the late Pleistocene and Holocene deposited tephra over wide distances to the east. Voluminous pyroclastic flows and mudflows extended into the Puget Sound lowlands to the west and diverted several river courses into adjacent valleys. The latest eruption of Glacier Peak only a few hundred years ago was noted by indigenous Pacific Northwest Indians, and hot springs occur on its flanks.
    (some text & images : Smithsonian Institution)

    SRC Location UTC Date/time M D INFO
    USGS Glacier Peak Area, Washington Dec 31 13:41 2.7 0 MAP I Felt It
    ER Glacier Peak, Washington (startup Record) Jan 01 00:00 0.1 0 MAP I Felt It


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    MMI II (Very weak shaking) ?
    People :
    Felt by persons at rest, on upper floors or favorably placed.
    MMI III (Weak shaking) ?
    People :
    Felt indoors; hanging objects may swing, vibration similar to passing of light trucks, duration may be estimated, may not be recognized as an earthquake.
    MMI IV (Light shaking) ?
    People :
    Generally noticed indoors but not outside. Light sleepers may be awakened. Vibration may be likened to the passing of heavy traffic, or to the jolt of a heavy object falling or striking the building.
    Fittings :
    Doors and windows rattle. Glassware and crockery rattle. Liquids in open vessels may be slightly disturbed. Standing motorcars may rock.
    Structures :
    Walls and frames of buildings, and partitions and suspended ceilings in commercial buildings, may be heard to creak.
    MMI V (Moderate shaking) ?
    People :
    Generally felt outside, and by almost everyone indoors. Most sleepers awakened. A few people alarmed.
    Fittings :
    Small unstable objects are displaced or upset. Some glassware and crockery may be broken. Hanging pictures knock against the wall. Open doors may swing. Cupboard doors secured by magnetic catches may open. Pendulum clocks stop, start, or change rate.
    Structures :
    Some large display windows cracked. A few earthenware toilet fixtures cracked.
    MMI VI (Strong shaking) ?
    People Felt by all. People and animals alarmed. Many run outside. Difficulty experienced in walking steadily.
    Fittings :
    Objects fall from shelves. Pictures fall from walls. Some furniture moved on smooth floors, some unsecured free-standing fireplaces moved. Glassware and crockery broken. Very unstable furniture overturned. Small church and school bells ring. Appliances move on bench or table tops. Filing cabinets or "easy glide" drawers may open (or shut).
    Structures :
    Slight damage to buildings with low standard. Some stucco or cement plaster falls. Large display windows broken. Damage to a few weak domestic chimneys, some may fall.
    Environment :
    Trees and bushes shake, or are heard to rustle. Loose material may be dislodged from sloping ground, e.g. existing slides, talus slopes, shingle slides.
    MMI VII (Very strong shaking) ?
    General alarm. Difficulty experienced in standing. Noticed by motorcar drivers who may stop.
    Fittings :
    Large bells ring. Furniture moves on smooth floors, may move on carpeted floors. Substantial damage to fragile contents of buildings.
    Structures :
    Unreinforced stone and brick walls cracked. Low standard buildings cracked with some minor masonry falls. A few instances of damage to buildings of ordinary workmanship. Unbraced parapets, unbraced brick gables, and architectural ornaments fall. Roofing tiles, especially ridge tiles may be dislodged. Many unreinforced domestic chimneys damaged, often falling from roof-line. Water tanks Type I burst. A few instances of damage to brick veneers and plaster or cement-based linings. Unrestrained water cylinders (hot-water cylinders) may move and leak. Some common windows cracked. Suspended ceilings damaged.
    Environment :
    Water made turbid by stirred up mud. Small slides such as falls of sand and gravel banks, and small rock-falls from steep slopes and cuttings. Instances of settlement of unconsolidated or wet, or weak soils. Some fine cracks appear in sloping ground. A few instances of liquefaction (i.e. small water and sand ejections).
    MMI VIII (Severe shaking) ?
    People Alarm may approach panic. Steering of motorcars greatly affected. Structures : Low standard buildings heavily damaged, some collapse. ordinary workmanship buildings damaged, some with partial collapse. Reinforced masonry or concrete buildings damaged in some cases. A few instances of damage to buildings and bridges designed and built to resist earthquakes. Monuments and pre-1976 elevated tanks and factory stacks twisted or brought down. Some pre-1965 infill masonry panels damaged. A few post-1980 brick veneers damaged. Decayed timber piles of houses damaged. Houses not secured to foundations may move. Most unreinforced domestic chimneys damaged, some below roof-line, many brought down. Environment : Cracks appear on steep slopes and in wet ground. Small to moderate slides in roadside cuttings and unsupported excavations. Small water and sand ejections and localized lateral spreading adjacent to streams, canals, lakes, etc.
    MMI IX (Violent shaking) ?
    Structures Many low standard buildings destroyed. Ordinary workmanship buildings heavily damaged, some collapse. Reinforced masonry or concrete buildings damaged, some with partial collapse. Buildings and bridges designed and built to resist earthquakes damaged in some cases, some with flexible frames seriously damaged. Damage or permanent distortion to some buildings and bridges, designed and built to normal use standards. Houses not secured to foundations shifted off. Brick veneers fall and expose frames. Environment : Cracking of ground conspicuous. Landsliding general on steep slopes. Liquefaction effects intensified and more widespread, with large lateral spreading and flow sliding adjacent to streams, canals, lakes, etc.
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