Earthquake swarm near Brawley, Southern California - A lot of damage + extensive update

Earthquake overview : 3 M5.3 earthquakes in only 3 minutes time ! + a big number of foreshocks and aftershocks. Spothern California and Northern Mexico have been shaken for many hours.
Tell us when you think you have felt this earthquake.
Cailifornia-only earthquake list

Keep this page open to read more details when they become available
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Liquefaction at Brawley - Click on the picture for more images from FOX5 San Diefo

Update 15:35 UTC :
- Some pictures are showing "liquefaction" which occurs often when strong shaking takes place in sandy soil. Liquefaction occurs in saturated soils, that is, soils in which the space between individual particles is completely filled with water. This water exerts a pressure on the soil particles that influences how tightly the particles themselves are pressed together. Prior to an earthquake, the water pressure is relatively low. However, earthquake shaking can cause the water pressure to increase to the point where the soil particles can readily move with respect to each other. Liquefaction can also be compared to quicksand. Most major earthquakes have cases of liquefaction
- For American standards, this earthquake was really damaging. No collapsed houses of course, but during the 2 years of our existence, this is only the third major damaging  incident (after Virginia and Oklahoma)
- Besides some structural damage to houses and mobile homes, a lot of damage has also occurred in the interiors of the houses. The many earthquakes (more than 300) have led to many minutes of shaking (sometimes strong the very strong) and make that everything may have been ok after the first set of earthquakes but tumbled because of the many aftershocks.
- 49 patients of the Pioneer's Memorial Hospital have been transferred throughout the area
- In addition to the Brawley Fire department, 16 other Fire corpses have given a helping hand in Brawley.
- In 1940 a M6.9 earthquake struck the Brawley area, the most important so far and contradicting yesterdays remark of a seismologist than quakes are normally not higher than +5. To the positive side one can say that the area has released his stress and that more severe quakes are unlikely to happen (although nobody is sure about that)
- Seismologists as well as the local authorities are asking people to react the best possible way on eventual new strong shaking. The main advise (which can also be found at the right side on thios page) is : Do not try to run out of buildings while shaking is occurring because you never know what is falling off the roof. Heavy shaking also means that you can be knocked down while running away. Please wait until the shaking stops before running outside.
At earthquake-report.com we continuously see that 50 to 70% is not following this advise (even in Japan). As a sad reminder we can tell you that almost all of the Lorka Spain fatalities (7) were due to falling debris while running outside!

Update 09:25 UTC :
- Aftershocks are still striking the Brawley area but a lot less than yesterday afternoon. A M3.4 is the strongest one since more than 5 hours. Although many may not sleep too well, at least the shaking will not be responsible tonight. It is currently 02:25 AM in Brawley, California.
- The following schools will be closed on Monday due to the events : Del Rio Community School, Mulberry Elementary, Brawley Union High School, Barbara Worth Junior High School, Phil D. Swing Elementary School, Miguel Hidalgo Elementary School and J.W. Oakley Elementary School
- Up to 400 people are able to spend the night in a "emergency shelter" organized by the Red Cross
- A total of 21 mobile homes have been declared uninhabitable. A lot of houses have reported minor damage.  Many trailers have been pushed of their foundations
- NO serious injuries have been reported (source : Brawley city manager)
- Click here for the Local station KSWT NEWS 13 Video page

Update 06:04 UTC :
Our partner EQArchives has just finished an interactive map showing the epicenters of a big part of the swarm. Click on the image to go to the interactive map where you can zoom in and out.

Update 04:53 UTC :
- New M5.1 aftershock a few minutes ago. There has been some minor damage to old houses indicating around a intensity V-VI from the  earthquakes.
- Brawley Seismic Zone is well known for such sequences as stated before in 2005, 1981, 1970s, 1930s etc. so it should be expected that some more aftershocks / swarm earthquakes can occur in the coming hours and days.

Update 00:32 UTC :
- New M4.7 aftershock, one more of an impressive number of aftershocks
- Some trailers are simply being knocked off from their foundations
- The number of earthquakes recorded in the Imperial area must run into the hundreds (including the less than M2.5 earthquakes)

Click on the image for the normal size

Update 22:17 UTC :
- Minor damage is being reported in Brawley. No houses have collapsed and we do not expect to find such damage, however some structural damage has been reported in a number of buildings. Click on the Thumbnail to watch the image in the local Imperial Valley Press

Update 22:06 UTC
- Power has been restored in some Brawley areas but not yet everywhere.
- The earthquakes were also registered on the seismographs in Los Angeles. ABC7 network has a live Quake cam on the Internet. Click here to watch it Live

Update 21:46 UTC
- The last comparable seismic swarm in Brawley dates from 1970. Another one occurred in the 1930's
- Some buildings in Brawley were evacuated after the first stronger quakes. People will probably stay outside for a while which is good in case other even stronger quakes would strike.
- The Brawley zone is a complex seismic area of smaller faults. The San Andreas main Fault runs from near Palm Springs to enter Mexico just west of Yuma.

The video below shows the strong shaking in Brawley, California. A family is enjoying sitting together in the living room when suddenly the shaking starts (after 25 seconds)

Update 21:38 UTC
- Damage assessments are currently being executed in the Brawley area.
- Imperial County has begun operating a "County Emergency Headquarters"
- Brawley has a population of 24,953 (latest census), not a small village. The town has a significant cattle and feed industry, and hosts the annual Cattle Call Rodeo. Year-round agriculture is an important economic activity in Brawley.
- Brawley has also a Geothermal power plan

Update 21:26 UTC
- Based on the reports we receive from our readers, the shaking seems to have lasted only a few seconds. Short shaking is seldom damaging. The longer the shaking is lasting the more chance on damages.
- 17 aftershocks in between M2.5 and M4.3 in only 26 minutes

Shaking map of the latest M5.4 earthquake at 21:57 UTC

Update 21:16 UTC
- The last strong earthquake has currently been labeled M5.4 at a shallow depth of 8.9 km. Epicenter 5 km North of Brawley
- Intensities of MMI IV to VI are reported in the epicenter area

Update 21:10 UTC
- There are scattered power outages in the Brawley area and out at Naval Air Facility El Centro, said Marion Champion, spokeswoman for the Imperial Irrigation District. More than 1,000 customers were out of power temporarily. Crews are out checking for damage.
- Pioneers Memorial Hospital has been evacuated, and patient have been moved to the wound care center.  Though there has not been reports of major damage at the hospital, patients had asked to be evacuated because they were scared. Glass had been broken inside the hospital.
(messages courtesy Imperial Valley press)

Important Update 21:03 UTC
A new strong M5.4 earthquake (preliminary value) had happened a few minutes ago
- The National Weather Service reports a preliminary Magnitude of M5.6!
- Epicenter a few km NNW of Brawley

Update 20:53 UTC :
- Residents in the San Diego area reported feeling the quake in places including downtown San Diego, Mission Valley, Santee and Chula Vista.
- Authorities in San Diego reported NO damage or injuries
- The Brawley seismic zone is very well known by seismologists for earthquake swarms. More M3 to M5 earthquakes can be expected, but it is unlikely that stronger earthquakes will appear. Of course stronger are possible but based on historic facts would be very abnormal.

Update 20:40 UTC :
- As you can see on the picture below, Brawley is a farming community with a patchwork of farming grounds. This kind of area can be very vulnerable for earthquake waves.
- SSN, the Mexican seismological agency has reported a M5.7 for the strongest quake (vs 5.3 USGS) and M5.2 vs M4.9 for the second quake.

Update 20:36 UTC :
USGS has updated the calculation of the intensity and reports now that 28000 people will probably have experienced a strong shaking (MMI VI).

Update 20:27 UTC :
- Not less than 19 earthquakes did struck in Southern California before the first M4.6 earthquake. It all started at 15:33 UTC
- When the first powerful M4.6 earthquake happened, this quake was followed by 7 earthquakes in only 13 minutes. The last 2 of this range measured M5.3 and M4.9
- Since the mainshock and in less than an hour, the area was struck by 22 aftershocks ranging from 2.5 until 4.3. This is only the total of M2.5 or greater as the real number will be far higher.

Update 20:19 UTC : The area is really rattled by aftershocks, most of them in the M3.0 to M3.9 range
- The earthquakes was felt as a very weak shaking as far as the Greater Los Angeles area in the North and as far as Ensenada to the south.
- Our Mexican correspondent reports that in Mexicali live has returned to normal and no damage has been reported or noticed.
- The strongest reported shaking so far was MMI V (moderate shaking), si after all this earthquake looks to be luckily harmless.

Update 19:59 UTC : The list of strongest quakes has been reduced by USGS to the following quakes : 4.6, 4.7, 5.3, 4.9, 4.5. Most of these quakes were very well felt in a north-south range Brawley to Mexicali.
The area is very well known by people following earthquakes and is a little north from the epicenter of the massive earthquake from a couple of years ago.
- The hospital in Mexicali has been partly evacuated and personnel is inspecting the building for eventual damage.
- Theoretical calculations from USGS are stating that 19000 people will have experienced a MMI VI strong shaking.
- The epicenter of the strongest shock is just north-west of Brawley
- The area has a lot of fault zones

Shaking map courtesy USGS

Update : Up to now, the strongest earthquakes had values of 4.6, 4.7, 5.3, 5.3, 5.3; 4.5 - thats really a lot of earthquakes in a short time. USGS has a hard time to follow the many strong earthquakes as they have to be monitored by seismologists

Update : The hospital in Mexicali is currently being evacuated

Since 15:33 UTC this afternoon a big number of earthquakes started in Southern California
The most powerful ones (4 in total) started at 19:20 UTC

The epicenter of these earthquakes are south of the Salton Sea and a north of Calexico / Mexicali.
We will start up an in-depth article soon as this earthquake needs more attention than a normal one

Most important Earthquake Data:
Magnitude : M5.3 + many more
UTC Time : Sunday, August 26, 2012 at 19:32:59 UTC
Local time at epicenter : Sunday, August 26, 2012 at 12:32:59 PM at epicenter
Depth (Hypocenter) : 4.6 km
Geo-location(s) :
9 km (5 miles) E (83°) from Brawley, CA
17 km (10 miles) SSE (158°) from Calipatria, CA

Links to important maps
USGS Did You Feel It Map
Google satellite map showing the epicenter and the surrounding area
Historic earthquakes map
Seismic hazard map
Shaking map
Scientific parameters
Human impact map

Click here for examples of our "earthquake notifications (button below)"

SRC Location UTC Date/time M D INFO
USGS Southern California Aug 26 23:53 3.2 13 MAP I Felt It
USGS Southern California Aug 26 23:36 3.8 7 MAP I Felt It
USGS Southern California Aug 26 23:34 3.4 5 MAP I Felt It
  • Blythe - we've felt a lot of the aftershocks and some were pretty strong
  • Phoenix Arizona - I thought a helicopter was hovering above my house, it was a deep rumble/vibration...scared me, it lasted about 7-10 seconds....
  • EMSC Southern California Aug 26 23:33 4.7 12 MAP I Felt It
  • San Diego - Watching the show under the big top at the "Sports Arena", got our hearths pumping since most of us were inside already. Felt like some one shaking your seat with their leg, but they wasn't! around 10sec.
  • Mexicali BC - Just sitting at home but this is the fourth big one we feel!!!!
  • Yuma, AZ - First time to actually feel it. The chair made a side to side rocking motion.
  • San Diego - I was at MCRD San Diego, the roof of our squad bay cracked, and a small chunk of concrete caused us to fail field day. it was also my birthday.
  • USGS Southern California Aug 26 23:33 4.6 9 MAP I Felt It
    USGS Southern California Aug 26 23:21 2.7 13 MAP I Felt It
    USGS Southern California Aug 26 23:16 2.6 13 MAP I Felt It
    USGS Southern California Aug 26 23:13 2.6 12 MAP I Felt It
    USGS Southern California Aug 26 22:58 4.3 13 MAP I Felt It
  • UNITED STATES - Napping... Awoke by bed shaking at 2:00 PM. Went back to bed Oceanside, CA... Sun. 8/26/2012 The " fault" right under my bed ? LOL Jeanne
  • USGS Southern California Aug 26 22:53 3.4 12 MAP I Felt It
    USGS Southern California Aug 26 22:52 3.4 12 MAP I Felt It
    USGS Offshore Northern California Aug 26 22:51 2.5 11 MAP I Felt It
    USGS Southern California Aug 26 22:51 2.5 0 MAP I Felt It
    USGS Southern California Aug 26 22:34 3.5 13 MAP I Felt It
    USGS Southern California Aug 26 22:34 2.8 13 MAP I Felt It
    USGS Southern California Aug 26 22:23 3.0 6 MAP I Felt It
    USGS Southern California Aug 26 22:22 2.8 12 MAP I Felt It
    USGS Southern California Aug 26 22:22 2.8 12 MAP I Felt It
    USGS Southern California Aug 26 22:16 2.8 13 MAP I Felt It
    USGS Southern California Aug 26 22:16 2.7 0 MAP I Felt It
    USGS Southern California Aug 26 22:13 2.7 15 MAP I Felt It
    USGS Southern California Aug 26 22:08 2.8 14 MAP I Felt It
    USGS Southern California Aug 26 22:06 3.4 9 MAP I Felt It
    USGS Southern California Aug 26 22:06 3.4 4 MAP I Felt It
    USGS Southern California Aug 26 22:01 3.0 13 MAP I Felt It
    USGS Southern California Aug 26 22:01 3.1 16 MAP I Felt It
    USGS Southern California Aug 26 21:54 3.0 16 MAP I Felt It
    USGS Southern California Aug 26 21:53 3.0 14 MAP I Felt It
    USGS Southern California Aug 26 21:47 2.7 10 MAP I Felt It
    USGS Southern California Aug 26 21:46 3.1 12 MAP I Felt It
    USGS Southern California Aug 26 21:45 2.5 13 MAP I Felt It
    USGS Southern California Aug 26 21:42 2.9 11 MAP I Felt It
    USGS Southern California Aug 26 21:37 2.5 0 MAP I Felt It
    USGS Southern California Aug 26 21:34 2.7 11 MAP I Felt It
    USGS Southern California Aug 26 21:30 2.5 12 MAP I Felt It
    USGS Southern California Aug 26 21:26 3.8 12 MAP I Felt It
    USGS Southern California Aug 26 21:23 3.5 14 MAP I Felt It
    USGS Southern California Aug 26 21:23 3.6 8 MAP I Felt It
    USGS Southern California Aug 26 21:22 2.5 5 MAP I Felt It
    USGS Southern California Aug 26 21:21 2.9 0 MAP I Felt It
    USGS Southern California Aug 26 21:21 2.9 12 MAP I Felt It
    USGS Southern California Aug 26 21:20 2.6 4 MAP I Felt It
    USGS Southern California Aug 26 21:20 2.8 10 MAP I Felt It
    USGS Southern California Aug 26 21:19 2.5 1 MAP I Felt It
    USGS Southern California Aug 26 21:19 2.7 0 MAP I Felt It
    USGS Southern California Aug 26 21:17 3.9 9 MAP I Felt It
    USGS Southern California Aug 26 21:15 4.2 8 MAP I Felt It
    USGS Southern California Aug 26 21:13 2.8 11 MAP I Felt It
    USGS Southern California Aug 26 21:12 2.9 0 MAP I Felt It
    USGS Southern California Aug 26 21:08 3.6 11 MAP I Felt It
    USGS Southern California Aug 26 21:06 3.1 13 MAP I Felt It
    USGS Southern California Aug 26 21:06 3.2 9 MAP I Felt It
    USGS Southern California Aug 26 21:05 3.1 5 MAP I Felt It
    USGS Southern California Aug 26 21:04 3.4 9 MAP I Felt It
    GEOFON Southern California Aug 26 20:58 5.3 10 MAP I Felt It
    EMSC Southern California Aug 26 20:57 5.5 10 MAP I Felt It
    USGS Southern California Aug 26 20:57 5.5 9 MAP I Felt It
  • escondido - Enough to wake the wife up in the bedroom. No more video games today :/
  • San Diego - Bed started shaking side to side- 2:00pm
  • Oceanside - Felt sofa move and then noticed hanging things moving.
  • yuma, az - Walls shaking...stayed in longe chair playing cards....nothing unusual
  • Torrance, CA - F-M-L
  • Laguna Niguel - 3 of us at home 2 felt it!
  • Laguna Niguel - Got my attention
  • La Quinta, CA - Very mild back and forth movement - 4-5 seconds.
  • san clemente calif - sitting on my bed. I felt as if the bed was sifting back and forth. I am located up on a hill.
  • San Clemente - Fist felt very light shake, a fragile shelf started clanging.. then it stopped and restarted harder, but still light, didn't time it but long enough...
  • Big River Ca - The house felt like it was moving back and forth for about 3 or 4 sec.
  • 92107 - slight side to side movment
  • UNITED STATES - Got the chandelier swaying....always a sure sign.
  • Yuma az - I felt weak shaking twice today so far.
  • Palos Verdes - Creaking, chandeliers swinging in north south motion.
  • Big River, Ca - Bed was moving back and fourth, curtains were moving and windows rattled.
  • El Cajon - I was in my bedroom laying on the watching tv, I felt a light shake at first so i thought it was just me swinging my legs over the footboard. Immediately after the light shaking, the whole room started shaking as if someone shaking a car side to side. It lasted about 10-15 seconds, about an hour and a half to two hours passed, and a second shake occured, lasting only 5 seconds.
  • 92103 - 12:33 PDT Moderate shaking. Nothing fell off the shelves, but definite concern when it started. Lasted 4- to 6- seconds.
  • San Diego - Live on the third floor and definitely felt it. Doors And windows were shaking.
  • Torrance,CA - It felt like my celling was vibrating slighly.
  • Downtown San Diego, Corner of Sixth and - Initially felt light shaking of bed moving slightly back and forth, gradually strengthened over the course of approximately 15 seconds then gradually weakened. Seemed like a series of three distinct pluses light, medium, and light. 15 seconds to one minute.
  • Imperial, CA - I have felt a lot Of them. One woke me up out of bed and I ran out cause me dog was barking. Has been many aftershocks since the morning and one about 4:10 pm pacific time.
  • Carlsbad, CA - A couple of hours ago, husband was at Jimbo's Naturally health food store and noticed the store shelves/racks seemed to be twisting. Not really shaking; it felt more like the whole store was mildly twisting. Didn't last very long, but very unnerving.
  • Oceanside, ca - sitting on couch and felt rumbling and couch moving.
  • 92592 - woke up the wife it was around 12:00 pm
  • La Jolla - Rocking motion felt twice at about 12:30PM - 12:40PM local time
  • Huntington beach ,ca - Was on the Pier at rubys in hb entire restaurant was shaking
  • SAN CLEMENTE CALIF - SWAY BACK AND FORTH A LITTLE LONGER THIS TIME
  • Paso Robles - We had all just gone to bed. We were in Paso Robles, CA, where our daughter was having a scheduled c-section the same morning. First thought her cat had jumped on the the bed. Then realized that the shaking had traveled down the entire wall.
  • Palm Desert, CA - Sunday's 5/4 earthquake felt here at about 12:30 pm. Rocking motion.
  • USGS Southern California Aug 26 20:45 2.6 12 MAP I Felt It
    USGS Southern California Aug 26 20:33 2.5 0 MAP I Felt It
    USGS Southern California Aug 26 20:31 3.1 4 MAP I Felt It
    USGS Southern California Aug 26 20:30 3.0 12 MAP I Felt It
    USGS Southern California Aug 26 20:28 2.8 9 MAP I Felt It
    USGS Southern California Aug 26 20:28 2.5 12 MAP I Felt It
    USGS Southern California Aug 26 20:24 2.5 12 MAP I Felt It
    USGS Southern California Aug 26 20:20 3.4 11 MAP I Felt It
    USGS Southern California Aug 26 20:16 3.5 12 MAP I Felt It
    USGS Southern California Aug 26 20:16 2.5 10 MAP I Felt It
    USGS Southern California Aug 26 20:14 3.0 12 MAP I Felt It
    USGS Southern California Aug 26 20:10 2.6 11 MAP I Felt It
    USGS Southern California Aug 26 20:08 2.5 7 MAP I Felt It
    USGS Southern California Aug 26 20:06 2.9 3 MAP I Felt It
    USGS Southern California Aug 26 20:04 2.5 9 MAP I Felt It
    USGS Southern California Aug 26 19:58 3.6 13 MAP I Felt It
    USGS Southern California Aug 26 19:58 3.5 0 MAP I Felt It
    USGS Southern California Aug 26 19:57 2.8 9 MAP I Felt It
    USGS Southern California Aug 26 19:50 3.4 12 MAP I Felt It
    USGS Southern California Aug 26 19:48 2.8 24 MAP I Felt It
    USGS Southern California Aug 26 19:47 2.5 12 MAP I Felt It
    USGS Southern California Aug 26 19:45 3.2 0 MAP I Felt It
    USGS Southern California Aug 26 19:44 3.5 4 MAP I Felt It
    USGS Southern California Aug 26 19:43 3.0 10 MAP I Felt It
    USGS Southern California Aug 26 19:40 4.3 13 MAP I Felt It
    USGS Southern California Aug 26 19:39 2.6 7 MAP I Felt It
    USGS Southern California Aug 26 19:38 3.1 10 MAP I Felt It
    USGS Southern California Aug 26 19:35 3.4 7 MAP I Felt It
    USGS Southern California Aug 26 19:32 4.9 14 MAP I Felt It
  • Polomolok, South Cotabato, Philippines - Light shaking here
  • UNITED STATES - Enough to shake chair side to side.
  • San Diego - Felt a slight shaking and saw my fan start to sway a little.
  • rosarito beach mexico - I felt a rocking sensation at around 12:32pm today and wondered if it was an earthquake or aftershock
  • blythe, ca - I was sitting at the kitchen table and suddenly felt the chair begin to rock. There was a pause and then it rocked again. Finally, it continued to rock steadily, but with decreasing intensity. The effects lasted 2-4 minutes.
  • San Diego, CA - Slight rumble, side to side movement at approximately 12:31 PM PST.
  • escondido - felt furniture move
  • 85344 - felt it at approx 12:33pm
  • Mexicali Baja Ca - light shaking from side to side, then a strong shake, it seemed long
  • Blythe, CA - Light shaking here in Blythe
  • san diego - Moderate shaking reported
  • San Diego, CA - lasted only a few seconds - mild rocking.
  • rosarito, mexico - a rolling for about 10 seconds, followed by another rolling for about 5 seconds.
  • San Clemente - Seemed to roll for a few seconds
  • San Clemente - Light shaking
  • Tijuana - Rolling
  • chula vista,ca - The bed rocked for about 5 seconds
  • La Mesa, CA - Very weak shaking
  • MEXICO - I felt it in Baja Cali, at about 12:32. It only lasted about 2 seconds...but it was enough to get my attention.
  • EMSC Southern California Aug 26 19:31 5.4 12 MAP I Felt It
    USGS Southern California Aug 26 19:31 5.3 12 MAP I Felt It
    USGS Southern California Aug 26 19:30 2.6 10 MAP I Felt It
    USGS Southern California Aug 26 19:30 3.7 1 MAP I Felt It
    USGS Southern California Aug 26 19:28 3.4 13 MAP I Felt It
    USGS Southern California Aug 26 19:28 3.4 12 MAP I Felt It
    USGS Southern California Aug 26 19:21 3.5 11 MAP I Felt It
    USGS Southern California Aug 26 19:20 4.6 13 MAP I Felt It
    USGS Southern California Aug 26 19:17 4.0 1 MAP I Felt It
    USGS Southern California Aug 26 19:16 4.0 13 MAP I Felt It
    USGS Southern California Aug 26 19:06 2.5 13 MAP I Felt It
    USGS Southern California Aug 26 19:06 2.5 13 MAP I Felt It
    USGS Southern California Aug 26 19:03 3.0 14 MAP I Felt It
    USGS Southern California Aug 26 18:58 3.1 13 MAP I Felt It

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    SHARE YOUR EARTHQUAKE EXPERIENCE WITH US

    Enter Email (not compulsory)
    Country where you felt the earthquake *
    City/Village where you felt the earthquake *
    Street or suburb (area) where you felt the earthquake
    Latitude (area) where you felt the earthquake
    Longitude (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) ?
    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) ?
    People
    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.
    Tell us your experience and how many seconds the shaking lasted + let us know if your property has been damaged (even slight damage). (max. 500 characters)
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    Comments

    1. Moved my couch twice with me on it the last one was a swaying back and forth motion Quartzsite, Arizona felt 3 that day nerves were on edge lol

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