My mother woke me up to tell me that there was a quake...I didn't feel anything personally. However, later on in the day, I was laying in bed and
felt the 2.8 that struck.
I did a google earth of the coordinates both were near Highway 13 in Oakland...about 2 miles from me. Maybe it was put on Yahoo's front page because
it was the second largest quake that rocked the bay area?
I experienced the 4.2 that rocked Laffayete back in March...I was in Berkeley at the time walking down the beer and wine section at Longs, I heard
some things drop in other isles but glad I didn't get bonked on the head where I was! It was a rather large jolt, and I hadn't felt one that large
since the 89' Loma Prieta. When it hit, I thought it was in the same area where some smaller quakes were felt near the Oakland / Berkeley border
earlier on this year and last.
As far as 4.2's happening every other day, not really in this area...we get some small ones here and there though and I've noticed an increase in
quakes here on the Hayward Fault since last year and into this year, but probably because I just been paying more attention than I ever had before.
Acording to the ANSS earthquake catalog
for this area, there have been several mag 4 quakes
since 1933, even some 5ers.
The list is rather long to post here but if you place a minimum magnitude at 3.0 and the start time to 1933 then put: delta=37.807,-122.188,0,60 into
the box under the Additional search perimeters, you'll see what I'm talking about.
There was a 5.7 back in 1986, a 5.4, 5.1, and 5.8, in 1980, and a 5.4 in 1955.
It's just a matter of when and where the next big one will strike...but if one was to hit here on the Hayward fault, I have no idea of what kind of
impact it may have on the building stuctures here. Will it be worse than the 1906?
Susceptibility Map of the San Francisco Bay Area
Liquefaction Hazard and Shaking Amplification Maps
Hayward Fault Zone
[edit on 23-7-2007 by DearWife]