Mysterious door rattling reported in ...

Mysterious door rattling reported in county; earthquake ruled out as the cause

There are 106 comments on the Santa Cruz Sentinel story from Mar 4, 2009, titled Mysterious door rattling reported in county; earthquake ruled out as the cause. In it, Santa Cruz Sentinel reports that:

The shaking felt across the Central Coast this morning was more than the small earthquakes near Tres Pinos and the Los Altos Hills.

Join the discussion below, or Read more at Santa Cruz Sentinel.

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Me Too

Aptos, CA

#1 Mar 4, 2009
Yeah, I felt and heard that about 9:15 in the Seabright area.

“Where Did All the Money Go?”

Since: Sep 08

Daly City, CA

#2 Mar 4, 2009
We felt it as well up San Jose/Soquel Rd. at around 9:15 and there was a similar rattling this afternoon, although I didn't catch the exact time.

I thought it might be activity at the nearby Olive Springs Quarry but nothing they do would be felt over that great of a distance.

Here's a link to the USGS earthquake site. No major activity there.

I find the nearly-simultaneous rattling in Southern California and interesting coincidence.

Maybe it's the new, horrendous California budget landing with a thud!

“How's your Karma?”

Since: Apr 08

Boulder Creek

#3 Mar 4, 2009
Ummmm, did anyone stop to think that it may have been thunder???? I'm just sayin'
Tony R

Santa Cruz, CA

#4 Mar 4, 2009
It was probably thunder. A couple of big booms, to be sure, but not an earthquake. The National Weather Service had forecast isolated thunderstorms this morning, so I was expecting a possible hit after experiencing sudden, heavy rain and hail the previous evening. When I heard the booms while outside my home in the Soquel hills just after 9 a.m., it did sound like an earthquake. I expected to feel some shaking, but there was nothing. A friend on the west side near Natural Bridges called and said his walls rattled. He also thought it was a quake. Both of us had been through Loma Prieta and many other quakes, so we know what they can sound like. I checked NWS radar, CBS5 Doppler radar, USGS quake activity and a Weather Underground lightning strike observation site in Saratoga as soon as I heard the noise. USGS had nothing at the time or after; radar showed a small cell moving ashore between Capitola and Moss Landing; two strikes were recorded on the automated lightning strike system. During the storms in 1997, there was a solitary lightning strike that knocked out a PG&E transformer near my home. The flash and sound were overpowering, so much so that the Sentinel reported people around the county had heard the noise. As now, there was speculation that it was a sonic boom. Thanks for letting me share a little science, reporting and history.
Tony R

Santa Cruz, CA

#5 Mar 4, 2009
Reviewing my comments, I see the infallible Interwebs says I am in Milpitas. That's just machines speaking. I'm really in Soquel.

“Where Did All the Money Go?”

Since: Sep 08

Daly City, CA

#6 Mar 4, 2009
Redwood Girl wrote:
Ummmm, did anyone stop to think that it may have been thunder???? I'm just sayin'
I thought of that too when it happened. This didn't have the thunder boom or rumble but did apparently have some sort of overpressure wave. It seemed like something different. I don't know what it was but immediately thought of a minor earthquake the way it was rattling doors. Mabye it was Jimmy Hoffa's ghost!

Aptos, CA

#7 Mar 4, 2009
Heard and felt it at 9:15 near Pet Pals near Soquel. Mild shimmy. Almost bolted from house but big shimmy never came. Never heard or felt the later ones.

Courtland, CA

#9 Mar 4, 2009
I felt both. The first I was home, and the windows shook, much like when I lived in Maryland not to far away from Aberdeen Proving Ground, a military base that checked munitions. The ones around noon, I was with my kids at Capitola Beach. I definitely could feel it in my body. I told my kids it was probably a sonic boom. After 9-11, the air force was flying over where I lived at the time, and went faster than the speed of sound at about 2 a.m. I jumped out of bed from a dead sleep on that one - I thought a gas station had blown up! The guys got in trouble - they were supposed to go slower over inhabited areas. This felt/sounded similar, although farther away.

United States

#10 Mar 4, 2009
Sonic boom? Awesome! I can't believe I missed it. I hope they come back.

Since: Jul 08

Location hidden

#11 Mar 4, 2009
Those blasted alien spacecraft buzzin the ocean again.

Santa Cruz, CA

#12 Mar 4, 2009
Felt it here in Day Valley as well, a sharp jolt windows shook, waiting for rest of shaking...none...odd...No thunder ever jolted my house.

United States

#14 Mar 4, 2009
I bet it was a set of smaller swarm meteors that were part of this meteor group:

Earth was nearly hit by an asteroid on Monday as astronomers reported the near collision. Although the meteor was not expected to hit the planet, NASA's Jet Propulsion Laboratory reported it was a close call. The space ball was similar to one which exploded over Siberia in 1908 and leveled 800 square miles of forest.

The Asteroid came within 48,000 miles from Earth on Monday morning. The meteor was about the size of a 10-story building.

Asteroid 2009 DD45 was within 48,000 miles from Earth at around 8:40 a.m. on Monday morning. The distance is about twice as far as the highest geostationary satellite which orbits the Earth. The meteor was around the size of a 10-story building.
Kit Pattle

Oakland, CA

#15 Mar 4, 2009
In all reality it is your military. These shock waves have been felt by me on more than one occasion over the last few weeks. They are doing some ocean stuff, subsurface of course. Has anyone noticed the large prop planes or helicopter teams (all military issue) perusing the North Coast during the last several weeks. I have.

United States

#16 Mar 4, 2009
Does anyone else think it is ridiculous that no military officials have offered up an explanation for this boom here or in LA? It is the media's job to find out what it was for please give it a shot sentinel writers. I am not cool with just letting it go. If they are doing something offshore in the bay, I want to know.

Novato, CA

#17 Mar 4, 2009
I felt the two this afternoon - around 12:20p - I'm in Aptos and it was sunny with no rain or clouds since the morning. It rattled my house so hard it slammed a door shut (no, there were no other doors or windows open at the time and it was not windy). The second boom was less - I was bracing for the ground to move but it was just a boom.

Los Angeles, CA

#18 Mar 4, 2009
Redwood Girl wrote:
Ummmm, did anyone stop to think that it may have been thunder???? I'm just sayin'
That is what I assumed it was. I promptly forgot about it. Only in California is a minor weather event newsworthy.

Mission Viejo, CA

#19 Mar 4, 2009
I'm with Chris from Hayward on this. How is it that no one 'officially' knows what it was? I was sitting at my computer last night when it rattled my windows HARD. This was NOT thunder. This was NOT an earthquake. If it was a sonic event why don't we know what caused it?

Santa Cruz, CA

#20 Mar 4, 2009
I felt it at the harbor at home at 9:15 and around 12:15 two subsquent serious shakes, felt like a quake and rattled all my windows and the house. The last boom in my area was the worse. The sun was out, no rain and it was not thunder. I immediatly filled my gas tank and got some cash just in case.
Reminder to all of us, Pack that earthquake kit and be ready with basics, cash, water,gas and enough food for two weeks. Next one will be bad. Don't forget to prepare your pets as well, we have a container with lease, food, medications and extra tags for our pet.

Santa Cruz, CA

#21 Mar 4, 2009
my nephew and niece fly Naval aircraft off the coast, they practice all the time off the CA coast. Could hae been sonics from the practice for fighters geting deployed soon to Afgan territories or fighters moving out to overseas already.

Redwood City, CA

#22 Mar 4, 2009
Very distinct low frequency rumble felt this morning in Seabright. If it's an earthquake, we usually get 2 time separated bumps - 1 is up/down, the other is side-side. The farther the separation on time from these 2 shakes, the farther away we are from the epicenter. Today's shaker was just a up/down bump - I thought it was a magnitude 3 earthquake just below us, hence just a combined rumble or shake with no separation. Interesting USGS shows no ground movement at that time. Might have come from the sky?

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