Quake activity along the San Andreas fault is picking up

Here we are again....a bit of a rude awakening this morning.
4.4 off the coast of Baja

I looked up that pottery place, out of curiosity, and.. no listing. But but but, it was such a large business. Maybe it's there now under another name.

Still, the image of hundreds and hundreds of giant pots tossed around in an earthquake is.. unsettling.

Where was it located and do you remember the name? Do a Google search on Oakland pottery to bring up a map of pottery business locations. You might see a name you recognize in another location or a location you remember going to that has a different name now.

Right.. I googled their name and oakland, no dice. But I should ratchet up a map and some pottery places and see what matches.

I don't have an old receipt with the address but it was in "off the ship" environs. I can ask my x business partner if she knows if they're still kicking, as they were a source for our design clients. I've never seen such a wonderful selection of pots. Well, pots vary - they didn't have carved stone or italian terra cotta, basically were an importer from asia. But still, it was pot nirvana, heh.

Well, I checked that. I had already found Aw Pottery, a link with picture of a few nothing much pots.. but now that I googled Oakland pottery, it showed up where I think the place was (she drove, knew the people). Au Pottery was/is the name I knew.

As it turns out, Loma Prieta, the quake that would have been the stunner, happened before I ever saw the place (I didn't have the year of it in my mind).

So I've been worrywarting over past history.. (I hope).

Looks like the same event to me, but it is being reported as two separate events.





5.4 Ml - OFFSHORE NORTHERN CALIFORNIA
Preliminary Earthquake Report Magnitude 5.4 Ml
Date-Time

* 4 Feb 2010 20:20:21 UTC
* 4 Feb 2010 12:20:21 near epicenter
* 4 Feb 2010 12:20:21 standard time in your timezone

Location 40.431N 124.929W
Depth 11 km
Distances

* 56 km (35 miles) WNW (282 degrees) of Petrolia, CA
* 59 km (36 miles) WSW (254 degrees) of Ferndale, CA
* 68 km (42 miles) WSW (256 degrees) of Fortuna, CA
* 76 km (47 miles) WSW (239 degrees) of Eureka, CA
* 363 km (225 miles) NW (306 degrees) of Sacramento, CA

--------------------------------

Magnitude 6.0 - OFFSHORE NORTHERN CALIFORNIA
2010 February 04 20:20:21 UTC

* Details
* Maps
* Scientific & Technical
* Additional Info


Earthquake Details
Magnitude 6.0
Date-Time

* Thursday, February 04, 2010 at 20:20:21 UTC
* Thursday, February 04, 2010 at 12:20:21 PM at epicenter

Location 40.431°N, 124.929°W
Depth 11.2 km (7.0 miles)
Region OFFSHORE NORTHERN CALIFORNIA
Distances

* 56 km (35 miles) WNW (282°) from Petrolia, CA
* 59 km (36 miles) WSW (254°) from Ferndale, CA
* 68 km (42 miles) WSW (256°) from Fortuna, CA
* 76 km (47 miles) WSW (239°) from Eureka, CA
* 363 km (225 miles) NW (306°) from Sacramento, CA

They had one a couple weeks ago in the same spot that was a 6.5.


Article on quake damage estimates from the last quake.

http://latimesblogs.latimes.com/lanow/2010/01/damage-from-65-california-earthquake-now-at-219-million.html

http://www.times-standard.com/ci_14334345

Magnitude 6 rocks Humboldt coast
The Times-Standard
Posted: 02/04/2010 12:51:22 PM PST

A strong magnitude-6 earthquake rocked the Humboldt coast at 12:20 p.m. today off the coast of Petrolia.

The quake comes less than one month after the destructive 6.5 magnitude quake that struck on Jan. 9.

It was located 35 miles west north west of Petrolia at a depth of 7 miles.

The earthquake appears to be a large, late aftershock to the Jan. 9 quake, said Jim Goltz, earthquake and tsunami program manager for the California Emergency Management Agency. It is in roughly the same location as the larger quake, Goltz said, and it's smaller. "It's unlikely that there's any additional damage," Goltz said.

I just talked to my old business partner up there. She sounded just fine. She said the quake was short and sharp. She'd been standing on a table to put up big stick-on letters (we used to do this once a month with the name of the current show and artist, quite high on the wall you see as you walk in the door), there being a gallery opening event this coming Saturday. She didn't even get off the table. She said it was much different than the last one..

Central California is getting very active again. These all occurred in the last 2 days. Looks like activity in the San Diego area is picking up again also.



3.0 Ml - CENTRAL CALIFORNIA
Preliminary Earthquake Report Magnitude 3.0 Ml
Date-Time

* 6 Feb 2010 09:00:41 UTC
* 6 Feb 2010 01:00:41 near epicenter
* 6 Feb 2010 01:00:41 standard time in your timezone

Location 36.642N 121.261W
Depth 7 km
Distances

* 16 km (10 miles) NW (319 degrees) of Pinnacles, CA
* 17 km (11 miles) SSE (162 degrees) of Tres Pinos, CA
* 22 km (14 miles) NE (47 degrees) of Gonzales, CA
* 26 km (16 miles) SSE (152 degrees) of Hollister, CA
* 96 km (60 miles) SE (144 degrees) of San Jose City Hall, CA

------------------------------------------------------------

3.3 Ml - NORTHERN CALIFORNIA
Preliminary Earthquake Report Magnitude 3.3 Ml
Date-Time

* 6 Feb 2010 13:07:32 UTC
* 6 Feb 2010 05:07:32 near epicenter
* 6 Feb 2010 05:07:32 standard time in your timezone

Location 40.820N 123.340W
Depth 31 km
Distances

* 31 km (19 miles) ESE (107 degrees) of Willow Creek, CA
* 32 km (20 miles) NNW (330 degrees) of Hayfork, CA
* 35 km (22 miles) WNW (285 degrees) of Weaverville, CA
* 69 km (43 miles) E (87 degrees) of Eureka, CA
* 298 km (185 miles) NNW (328 degrees) of Sacramento, CA

--------------------------------------------------------------

2.9 Mcd - NORTHERN CALIFORNIA
Preliminary Earthquake Report Magnitude 2.9 Mcd
Date-Time

* 7 Feb 2010 02:45:24 UTC
* 6 Feb 2010 18:45:24 near epicenter
* 6 Feb 2010 18:45:24 standard time in your timezone

Location 37.292N 121.101W
Depth 2 km
Distances

* 7 km (5 miles) WSW (250 degrees) of Newman, CA
* 10 km (6 miles) WNW (296 degrees) of Gustine, CA
* 20 km (13 miles) S (172 degrees) of Patterson, CA
* 42 km (26 miles) SSW (193 degrees) of Modesto, CA
* 70 km (44 miles) E (94 degrees) of San Jose City Hall, CA
----------------------------------------------------------
2.8 Mcd - CENTRAL CALIFORNIA
Preliminary Earthquake Report Magnitude 2.8 Mcd
Date-Time

* 7 Feb 2010 03:22:50 UTC
* 6 Feb 2010 19:22:50 near epicenter
* 6 Feb 2010 19:22:50 standard time in your timezone

Location 36.474N 121.046W
Depth 4 km
Distances

* 11 km (7 miles) SE (127 degrees) of Pinnacles, CA
* 24 km (15 miles) NE (47 degrees) of Greenfield, CA
* 26 km (16 miles) E (80 degrees) of Soledad, CA
* 30 km (19 miles) NNE (14 degrees) of King City, CA
* 122 km (76 miles) SE (142 degrees) of San Jose City Hall, CA
--------------------------------------------------------

3.6 Ml - CENTRAL CALIFORNIA
Preliminary Earthquake Report Magnitude 3.6 Ml
Date-Time

* 8 Feb 2010 19:56:23 UTC
* 8 Feb 2010 11:56:23 near epicenter
* 8 Feb 2010 11:56:23 standard time in your timezone

Location 36.723N 121.363W
Depth 3 km
Distances

* 8 km (5 miles) SSW (207 degrees) of Tres Pinos, CA
* 14 km (9 miles) SSE (167 degrees) of Hollister, CA
* 21 km (13 miles) SE (131 degrees) of San Juan Bautista, CA
* 83 km (52 miles) SE (145 degrees) of San Jose City Hall, CA

Now this is an interesting location. Parkfield is the most studied spot on earth for earthquake studies and earthquake predictions.

3.6 Ml - CENTRAL CALIFORNIA
Preliminary Earthquake Report Magnitude 3.6 Ml
Date-Time

* 11 Feb 2010 08:33:42 UTC
* 11 Feb 2010 00:33:42 near epicenter
* 11 Feb 2010 00:33:42 standard time in your timezone

Location 35.913N 120.466W
Depth 7 km
Distances

* 3 km (2 miles) WNW (295 degrees) of Parkfield, CA
* 27 km (17 miles) NE (49 degrees) of San Miguel, CA
* 27 km (17 miles) SSW (201 degrees) of Coalinga, CA
* 203 km (126 miles) SE (141 degrees) of San Jose City Hall, CA

http://www.kron4.com/News/ArticleView/tabid/298/smid/1126/ArticleID/4956/reftab/65/t/Quake%20Worries%20to%20Keep%20Santa%20Clara%20County%20Reservoirs%20Below%20Capacity/Default.aspx

Quake Worries to Keep Santa Clara County Reservoirs Below Capacity
Created by Brian Shields on 2/12/2010 11:33:00 AM

SANTA CLARA, Calif. (AP) - Several of the reservoirs that supply Silicon Valley will not be filled to capacity this winter no matter how much rain falls in Northern California.

Officials with the Santa Clara Valley Water District say its reservoir system can only store 78 percent of the water it is designed to hold because of concerns dams could collapse from the top in an earthquake, causing massive floods.

That means the aging system - built in the 1930s and 1950s - would have to be drained if water levels rise higher.

The potential water loss could be as high as 37,000 acre feet, or enough to supply 185,000 people for a year.

District water supply manager Keith Whitman says studies under way could clear the reservoirs to store more water. But those studies are not expected to be completed until after this year's rainy season.

Magnitude 4.1 - GREATER LOS ANGELES AREA, CALIFORNIA
2010 February 13 21:39:06 UTC

Earthquake Details
Magnitude 4.1
Date-Time

* Saturday, February 13, 2010 at 21:39:06 UTC
* Saturday, February 13, 2010 at 01:39:06 PM at epicenter

Location 34.012°N, 117.168°W
Depth 2.6 km (1.6 miles)
Region GREATER LOS ANGELES AREA, CALIFORNIA
Distances

* 5 km (3 miles) S (176°) from Redlands, CA
* 7 km (5 miles) SW (217°) from Mentone, CA
* 9 km (5 miles) ESE (118°) from Loma Linda, CA
* 11 km (7 miles) NNE (30°) from Moreno Valley, CA
* 11 km (7 miles) W (259°) from Yucaipa, CA
* 100 km (62 miles) E (92°) from Los Angeles Civic Center, CA



----------------------------------------

Magnitude 4.4 - OFF THE COAST OF OREGON
2010 February 13 00:38:22 UTC

Versión en Español

* Details
* Maps
* Scientific & Technical

Earthquake Details
Magnitude 4.4
Date-Time

* Saturday, February 13, 2010 at 00:38:22 UTC
* Friday, February 12, 2010 at 03:38:22 PM at epicenter
* Time of Earthquake in other Time Zones

Location 44.007°N, 127.514°W
Depth 24.6 km (15.3 miles)
Region OFF THE COAST OF OREGON
Distances

* 268 km (166 miles) WNW (287°) from Barview, OR
* 269 km (167 miles) WNW (293°) from Bandon, OR
* 270 km (168 miles) W (279°) from Winchester Bay, OR
* 352 km (219 miles) W (271°) from Eugene, OR
* 420 km (261 miles) WSW (248°) from Portland, OR

Interesting article on the progress in the science of earthquake predictions:

http://www.washingtonpost.com/wp-dyn/content/article/2010/02/12/AR2010021200941.html

Question:
With the recent devastating earthquake in Haiti, I am wondering whether there have been any advances in predicting when and where earthquakes will happen. And besides California, what earthquake-prone areas in the U.S. should I be concerned about?

Daniel Lippman
Washington, D.C.

Answer:
Scientists are making progress honing their ability to forecast the likelihood of strong earthquakes along fault zones, but they cannot predict a quake's precise time, location and magnitude, said Stuart Sipkin, a geophysicist with the U.S. Geological Survey's National Earthquake Information Center in Golden, Colo.

In fact, scientists are divided over whether such predictions will ever be possible. Sipkin said some believe quakes are by their nature too random to allow for precise predictions, while others feel science simply hasn't found the right precursors that might allow them to make lifesaving quake predictions.

While predicting earthquakes isn't currently possible, advances in the past decade using global positioning system measurements to reveal subtle changes in the Earth's crust have aided science's ability to forecast the probabilities of strong quakes along many fault zones.

Those readings show the growing pressures along faults - the areas where tectonic plates slide past each other. That data, along with a fault's past history of strong quakes and the time that's elapsed since the last such temblor, help scientists calculate the amount of stress faults can take before their plates suddenly slip, causing a quake.

GPS data were key to scientists' 2008 forecast that the fault which caused January's devastating quake in Haiti was capable of causing a 7.2-magnitude earthquake, Sipkin says.

That prediction, which came without a specific timeframe, was released about two years before a 7.0 magnitude quake hit Haiti's Port-au-Prince area on Jan. 12.

The USGS maintains earthquake hazard maps illustrating the risk levels of quakes for the entire U.S. The high risk zones in the agency's 2008 maps -http://earthquake.usgs.gov/hazards/- include the West Coast, Hawaii, Alaska, Utah and the central Mississippi River Valley region.

Rick Callahan
Reporter
Indianapolis

Check out this article and video about a rogue wave in Half Moon Bay during the surfing contest. I checked for local quakes and don't see any nearby. Wonder if this was a small tsunami from the Oregon quake or the ones in Hawaii this morning.

http://www.kron4.com/News/ArticleView/tabid/298/smid/1126/ArticleID/4968/reftab/64/t/Rogue%20Wave%20Hurts%20More%20than%20Two%20Dozen%20Mavericks%20Spectators/Default.aspx

Video of the wave and damage is at the link. I can't figure out how to embed it here.

Excerpt:

Magnitude 4.1 - CENTRAL CALIFORNIA
2010 February 15 00:07:09 UTC

Earthquake Details
Magnitude 4.1
Date-Time

* Monday, February 15, 2010 at 00:07:09 UTC
* Sunday, February 14, 2010 at 04:07:09 PM at epicenter
* Time of Earthquake in other Time Zones

Location 36.076°N, 117.862°W
Depth 2.5 km (1.6 miles)
Region CENTRAL CALIFORNIA
Distances

* 8 km (5 miles) ENE (66°) from Coso Junction, CA
* 24 km (15 miles) SSE (149°) from Olancha, CA
* 31 km (19 miles) SSE (152°) from Cartago, CA
* 53 km (33 miles) NNW (342°) from Ridgecrest, CA
* 227 km (141 miles) N (9°) from Los Angeles Civic Center, CA

-------------------------------
Magnitude 4.5 - BAJA CALIFORNIA, MEXICO
2010 February 14 21:35:47 UTC

Earthquake Details
Magnitude 4.5
Date-Time

* Sunday, February 14, 2010 at 21:35:47 UTC
* Sunday, February 14, 2010 at 01:35:47 PM at epicenter
* Time of Earthquake in other Time Zones

Location 32.275°N, 116.588°W
Depth 0.9 km (~0.6 mile) (poorly constrained)
Region BAJA CALIFORNIA, MEXICO
Distances

* 33 km (20 miles) S (173°) from Tecate, Baja California, Mexico
* 42 km (26 miles) E (98°) from Rosarito, Baja California, Mexico
* 44 km (27 miles) ESE (115°) from La Joya, Baja California, Mexico
* 45 km (28 miles) N (4°) from Ensenada, Baja California, Mexico
* 50 km (31 miles) SE (125°) from Tijuana, Baja California, Mexico
----------------------
3.3 Ml - CENTRAL CALIFORNIA
Preliminary Earthquake Report Magnitude 3.3 Ml
Date-Time

* 15 Feb 2010 03:07:54 UTC
* 14 Feb 2010 19:07:54 near epicenter
* 14 Feb 2010 19:07:54 standard time in your timezone

Location 36.705N 121.335W
Depth 3 km
Distances

* 10 km (6 miles) S (188 degrees) of Tres Pinos, CA
* 17 km (10 miles) SSE (160 degrees) of Hollister, CA
* 22 km (14 miles) NE (47 degrees) of Chualar, CA
* 86 km (54 miles) SE (145 degrees) of San Jose City Hall, CA

I haven't seen such wide spread activity along the entire length of the coast like this in a long time... makes me think something bigger is about to occur.

could just be stress being relieved at multiple nodes. The USGS has several contingency models that evaluate nodal propogations (These are places where more than one fracture zone intersect). They have coordinates and hypocoordinates and are plotted in 3-d (actually have to use 3d glasses to vizualize on screen. The patterns of these sometimes can be seen as radiating seismic events that can either store up energy at a strain point and could indicate something following, or it could just mean, as I said up front, its a lot of stress being relieved. I like to think of it as when you have a crick in your neck and back, a single twist can cause release of tension that you can hear as little bones snap in place.
Lets hope its the latter
Also, the season has been wet and maybe rainfall recharge to surface fractures has transferred some energy to deeper nodes and slip surfaces. USGS has shown it can propogate mini seisms by "wetting" a fracture zone where stress has built up as measured on strain gages and other seismic stations in the hills.

The Tahoe area in Nevada and the Parkfield area in Central California are stepping up in activity this week:

3.6 Ml - NEVADA
Preliminary Earthquake Report Magnitude 3.6 Ml
Date-Time

* 24 Mar 2010 02:22:03 UTC
* 23 Mar 2010 19:22:03 near epicenter
* 23 Mar 2010 18:22:03 standard time in your timezone

Location 38.822N 119.369W
Depth 8 km
Distances

* 1 km (1 miles) WNW (285 degrees) of Smith Valley, NV
* 4 km (3 miles) NW (304 degrees) of Smith, NV
* 25 km (16 miles) SW (224 degrees) of Yerington, NV
* 55 km (34 miles) ESE (102 degrees) of South Lake Tahoe, CA
* 185 km (115 miles) E (80 degrees) of Sacramento, CA

---------------------------

3.6 Ml - CENTRAL CALIFORNIA
Preliminary Earthquake Report Magnitude 3.6 Ml
Date-Time

* 25 Mar 2010 22:44:49 UTC
* 25 Mar 2010 15:44:49 near epicenter
* 25 Mar 2010 14:44:49 standard time in your timezone

Location 35.950N 120.506W
Depth 9 km
Distances

* 9 km (5 miles) NW (310 degrees) of Parkfield, CA
* 25 km (16 miles) SSW (212 degrees) of Coalinga, CA
* 28 km (17 miles) NE (38 degrees) of San Miguel, CA
* 198 km (123 miles) SE (141 degrees) of San Jose City Hall, CA

------------------------

3.5 Ml - NEVADA
Preliminary Earthquake Report Magnitude 3.5 Ml
Date-Time

* 25 Mar 2010 05:35:45 UTC
* 24 Mar 2010 22:35:45 near epicenter
* 24 Mar 2010 21:35:45 standard time in your timezone

Location 38.821N 119.370W
Depth 6 km
Distances

* 1 km (1 miles) W (279 degrees) of Smith Valley, NV
* 4 km (3 miles) WNW (302 degrees) of Smith, NV
* 25 km (16 miles) SW (224 degrees) of Yerington, NV
* 55 km (34 miles) ESE (103 degrees) of South Lake Tahoe, CA
* 185 km (115 miles) E (80 degrees) of Sacramento, CA

------------------------------

3.9 Ml - NEVADA
Preliminary Earthquake Report Magnitude 3.9 Ml
Date-Time

* 24 Mar 2010 02:22:03 UTC
* 23 Mar 2010 19:22:03 near epicenter
* 23 Mar 2010 18:22:03 standard time in your timezone

Location 38.822N 119.370W
Depth 8 km
Distances

* 1 km (1 miles) WNW (284 degrees) of Smith Valley, NV
* 4 km (3 miles) WNW (303 degrees) of Smith, NV
* 25 km (16 miles) SW (224 degrees) of Yerington, NV
* 54 km (34 miles) ESE (102 degrees) of South Lake Tahoe, CA
* 185 km (115 miles) E (80 degrees) of Sacramento, CA

-----------------------------

3.2 Ml - NEVADA
Preliminary Earthquake Report Magnitude 3.2 Ml
Date-Time

* 24 Mar 2010 02:21:03 UTC
* 23 Mar 2010 19:21:03 near epicenter
* 23 Mar 2010 18:21:03 standard time in your timezone

Location 38.821N 119.368W
Depth 7 km
Distances

* 1 km (1 miles) W (281 degrees) of Smith Valley, NV
* 4 km (3 miles) WNW (303 degrees) of Smith, NV
* 25 km (16 miles) SW (224 degrees) of Yerington, NV
* 55 km (34 miles) ESE (103 degrees) of South Lake Tahoe, CA
* 185 km (115 miles) E (80 degrees) of Sacramento, CA

The long-slumbering Pacific Northwest is coming awake again...

Magnitude 4.2
Date-Time

* Monday, March 29, 2010 at 11:38:14 UTC
* Monday, March 29, 2010 at 04:38:14 AM at epicenter
* Time of Earthquake in other Time Zones

Location 51.687°N, 130.278°W
Depth 10 km (6.2 miles) set by location program
Region QUEEN CHARLOTTE ISLANDS REGION
Distances

* 223 km (139 miles) WNW (301°) from Port Hardy, BC, Canada
* 291 km (181 miles) S (180°) from Prince Rupert, BC, Canada
* 392 km (244 miles) SSE (167°) from Metlakatla, AK
* 572 km (355 miles) WNW (301°) from Vancouver, British Columbia, Canada

-------------------------

Magnitude 3.1
Date-Time

* Monday, March 29, 2010 at 21:27:12 UTC
* Monday, March 29, 2010 at 02:27:12 PM at epicenter
* Time of Earthquake in other Time Zones

Location 46.994°N, 120.954°W
Depth 1.5 km (~0.9 mile) set by location program
Region WASHINGTON
Distances

* 21 km (13 miles) S (180°) from South Cle Elum, WA
* 22 km (14 miles) S (183°) from Cle Elum, WA
* 23 km (14 miles) WSW (249°) from Thorp, WA
* 113 km (70 miles) SE (126°) from Bellevue, WA
* 126 km (78 miles) SE (124°) from Seattle, WA