Minor earthquake – Molalla, Oregon – December 14, 2017

Most important Earthquake Data:

Magnitude : 3.96

Local Time (conversion only below land) : 2017-12-13 17:24:26

GMT/UTC Time : 2017-12-14 01:24:26

Depth (Hypocenter) : 17.37 km

Depth and Magnitude updates in the list below.

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SRC Location UTC Date/time M D INFO
EMSC Oregon Dec 14 01:24 4.0 17 MAPI Felt It
  • Clackamas – Scary
  • Molalla – Sitting in the living room, house shook, seemed like maybe some big upstairs fell over. Coffee table lurched. Lasted maybe 3 seconds. No damage
  • Salem oregon – Brief, several seconds where the entire house shook. No damage I am aware of.
  • PDX, downtown – Shaking lasted about three seconds. No damage.
  • Washougal – Felt a few waves move through the house from the south. A couple of windows creaked in their frames, cat woke up startled, and my glass of water sloshed.
  • Camas – 1-2 seconds
  • Portland Oregon 97202 – Bed started to shake, then it slowed down, and then shook harder.
  • Gervais – Felt like it Lasted about 10-12 seconds. Absolute length of time unknown.
  • Wilsonville – It was super startling. I thought my dog was scratching himself because the couch was moving, but behind me I felt the tree moving and heard the ornaments moving, so when I looked at the mini trees, the tiny ornaments were wobbling back and forth. It was then I knew it was an earthquake. Maybe lasted 5-10 seconds.
  • south of Molalla Oregon – Sitting in living room, felt moderate shaking of house, husband and I looked at each other and said it was an earthquake while it was in progress. Lasted several seconds.
  • Salem – Weak shaking
  • Silverton – 1-2 secs, moved back and forth rather than shaking
  • North Plains – Only one jolt, no shaking.
  • Salem Oregon – Light shaking
  • Wilsonville, OR – No more than 5 seconds. The force didn\’t move anything, but it was very noticeable.
  • Monmouth – Weak shaking
  • Portland – 3-4 seconds..definitely above mild
  • Washougal – Weak shaking
  • Molalla – Light shaking
  • McMinnville, oregon – Felt one jerk-definite EQ. Sitting at desk.
  • Lake Oswego – 2-3 seconds, a couple of jolts, like heavy falling upstairs
  • North Plains – Shaking lasted approximately 2-3 seconds.
  • Aloha – About 10 seconds. No damage, basically shaking of items in house and tremble underfoot
  • Sweet Home – Husband and I sitting on the couch and both of us felt it shake for about 3 seconds.
  • Hillsboro – more like a jolt, as if from an explosion or tree falling
  • Independence – Lasted about 2-3 seconds. Wall in my office was slightly shaking.
    No damage.
  • Mollala – Shaking lasted for less than 3-4 seconds, no damage, just very shaken up.
  • Lake Oswego – About 4 seconds if shaking here in Lake Oswego! My kids felt it and got under a table within a second. Luckily it ended shortly after and was very minor. Only a few books fell.
  • Hillsboro, Or – A sudden jolt. The chair I was in moved to the side a bit. Definitely caught my attention.
  • Canby – Felt the foundation raise and came down like a shockwave. Then Light sounds of shaking
  • Milwaukie – 2 waves of shaking house, (weightless feeling) lasting about 6 seconds total.
  • Salem – Wasn\’t shaking felt more like house was rolling. Sitting in chair and asked daughter what was that?
  • Molalla – It felt like something massive hit our house. It was a loud bang that jolted us and our house very hard 1 time. Only lasted about 2 seconds.. Didn\’t feel like an earthquake.
  • Hillsboro – Sitting on toilet I felt the shake even my glass shower glass doors shook. I definitely felt it!
  • USGS Molalla, Oregon Dec 14 01:24 4.0 17 MAPI Felt ItINFO
  • Milwaukie – Something rattled, shaking 2-3 seconds
  • Newberg – Light shaking
  • Mollala – Few seconds. Big jolt twice.
  • Portland – 5-10 seconds. No damage.
  • Mulino – Strong shaking
  • dundee – Weak shaking
  • Wilhoit – Rumbling sound then a huge crack and thud on the side of the house.
  • Tigard, OR – It lasted about 1 second, but shook my whole apartment. It felt sort of strong, but I was just caught up in the moment, I\’m sure.
  • King City, OR – No damage, shaking lasted 3 – 5 seconds
  • Forest Grove, OR – Jolt felt in several factory buildings, safety officer felt need to check each building.
  • GERVAIS – Shaking lasted around 10-12 seconds.
  • West Linn – West Linn The entire house had 2 shakes with about a 2 second delay between. The entire shake lasted no more than 5 seconds.
  • Salem – Bed moved, curtain started swinging, my daughter fell and i ended up having a seizure.
    My oldest was on a bus and thought that it was hit. My other daughter was on her bunk bed and thought it was going to fall. Called around to my local friends and they all felt it



    Other earthquakes in the greater epicenter area

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    I felt the shaking *
    Country where you felt the earthquake *
    City/Village where you felt the earthquake *
    Street or suburb (area) where you felt the earthquake
    Shaking Strength *
    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) ?

    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) ?

    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) ?

    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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