Moderate earthquake near Riverside, California, USA – NO damage or injuries

Last update: September 15, 2011 at 7:16 am by By

Earthquake overview :  At 7:44 a moderate shallow earthquake struck 8 km from Yucaipa and 109 km from LA downtown.

"I have Felt it" Reports –> see below + Let us know how you have felt this earthquake

To read the full story as it happened, we advise our readers to start at the lower part of the page (earthquake data).

Keep this page open or return regularly as we will be back with more details when they become available

FINAL update 16:22 UTC : After screening our many sources (all Fire Department brigades and some supermarkets in the epicenter area), we are happy to report that this earthquake made NO damage, injuries or casualties.

Update : We thank our many Californian readers who have felt this earthquake and wrote almost immediate reports to us.  Your reports are clarifying within minutes a) the strength of the earthquake b) the length of the shaking (important for eventual damage) c) helps people living more far away from the epicenter to find out where the quake was and how strong it was perceived.

Update : More 'I Have Felt It" reports

Update : Of course, this kind of earthquake will not injure people seriously or make any major damage, but is it still too soon to talk about NO minor damage or minor injuries. All authorities have to report on the calls they received before any final report can be made. At earthquake-report. com we don't expect any damage, but every earthquake is a different one and generates sometimes minor damage even with weak to moderate magnitudes.

Update : We call on people who got some damage (even minor damage like broken windows, cracks in walls, loose tiles, etc) to report this with the form below – thanks Earthquake-Report. com

Update : More 'I Have Felt It" reports

Update : For the ABC Live quake cam – Click here

Update : For 'I Have Felt It" reports –> see below

Update : 41,000 people will have experienced a Moderate V MMI shaking and 726,000 people a light shaking.

Fontana CA : We felt a very strong jolt over here at our work in Fontana , California. Our company is FPD Design Group.

Update : MMI values and the most important locations experiencing it : MMI – location – number of people
IV    Moreno Valley    169k
IV    Redlands    70k
IV    Yucaipa    50k
IV    Mentone    9k
IV    Calimesa    8k
IV    Lakeview    2k
III    Riverside    298k
I    Los Angeles    3,695k
I    Long Beach    483k
I    Santa Ana    343k
I    Anaheim    328k

Update : epicenter is close to Moreno Valley, Yucaipa, Mentone, Calimesa and Lakeview


"I Have Felt It" reports as received by Earthquake-Report.com
MMI values (if indicated) after the text (III: Weak shaking, IV Light shaking, V Moderate shaking, VI Strong shaking, VII Very Strong shaking)
Fontana CA : We felt a very strong jolt over here at our work in Fontana , California. Our company is FPD Design Group.
Riverside, CA : Heard noise before it hit. Was more of a jar
Menifee, CA: I heard it coming for maybe 5 seconds and then felt a weak shaking lasting only 3 seconds or so. – Marianne
Banning, CA: I heard a big bang and then shaking and the dog started barking.
Menifee, CA: Rural area away from traffic, felt moderate vibratin side to side motion
Canyon Lake, CA: 5 seconds or longer, loud rumbly sound
Corona, CA: Earthqake woke me up
Hemet, CA: Noise and hard jolt.
Riverside, CA: lasted about maybe 6 seconds
Corona, CA: my house shook about a few minutes ago here in corona, ca
San Bernardino, CA: Felt an earthquake at around 7:45 this morning. It was pretty strong, I was in the Northridge earthquake and it felt similar in strength but not in duration it was maybe a 20 second shake (side to side). I am waiting to hear any reports on the news but nothing has been said yet. I live in San Bernardino right by Devore area.
Hemet, CA: Thought someone hit the front of the house
Fontana, CA: Rumbling, table and glasses shaking in cabinets, and chandeliers swinging.
Mira Loma, CA: Just waking up and felt dresser and the bed I was in shake a little bit.
Riverside, CA:  I was outside, very still and felt it. But most people i talked to didn't feel it outside. Felt indoors.. Small rumble at first, then a light shaking for what seemed to be a couple seconds. Happened on 09/14/11 @ 7:45am Pacific time
Riverside, CA: During our meeting felt a quick jolt, we thought a forklift had hit the wall while picking up pallets, but had other team members report the sensation throughout our 1.6M square foot building.
Riverside, CA: Fairly prolonged light shaking with a light jolt and then a brief period of shaking after.  Talked to family in the immediate area most felt it the same as I did – one (my 80 year old mother) only felt the jolt.
Fontana, CA: Rumbling, table and glasses shaking in cabinets, and chandeliers swinging
Redlands, CA: 9/14/11 in Redlands, CA. Fast jolt felt inside my home.  Then it was over.  No swaying.
San Bernardino, Grand Terrace, CA: The wall in one bedroom shook, but nothing fell down. The bed shook in another bedroom, but only for about 10 seconds and it wasn't very strong.
Moreno Valley, CA: It's bark was louder than its bite. Loud with light shaking. Moreno Valley
Nuevo, CA: It was shaking and it woke up my 3 year old daughter
Mission Viejo, CA: felt weak shaking
Canyon Lake, CA: 7:25 am i felt a very rough shaking for about 10 secs. And it was very strong until about the 8th second then it started to calm
Riverside, CA:  Moderate jolt felt around 7:44am in 92503 area


Most important Earthquake Data:
Magnitude : 4.2
UTC Time : Wednesday, September 14, 2011 at 14:44:50 UTC
Local time at epicenter : Wednesday, September 14, 2011 at 07:44:50 AM at epicenter
Depth (Hypocenter) : 15.6 km
Geo-location(s) :
10 km (6 miles) WNW (293°) from Beaumont, CA
13 km (8 miles) SSE (159°) from Mentone, 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
Focal mechanism report
Human impact map

Live seismogram on Sunset Peak (San Antonio Heights) – Courtesy USGS – Click on the image to see the seismogram in detail

QuakeSOS+ and QuakeSOS free are iPhone applications developed by Armand Vervaeck, the founder of Earthquake Report. The Application simplifies immediate group communication to friends and family members (with your exact GPS location) and is feeding the users with Earthquake Report news. The 0.99 US$ QuakeSOS+ version will support the activities of SOS Earthquakes.

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I did feel it – Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo siento – 我的确感到了 – 私はそれを感じていました- Ich habe es gefühlt – Bunu hissediyorum yaptı – لم أشعر أنه

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