Magnitude 6.0 - OFFSHORE NORTHERN CALIFORNIA

[thirtyhz]

This JUST happened, in precisely the same location as the EQ back in January.  When I say just happened, I mean like the last 15 minutes.

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

Location Uncertainty   horizontal +/- 1.4 km (0.9 miles); depth +/- 2 km (1.2 miles)
Parameters   Nph=101, Dmin=50 km, Rmss=0.35 sec, Gp=227°,
M-type=regional moment magnitude (Mw), Version=4

Source   
    * California Integrated Seismic Net:
    * USGS Caltech CGS UCB UCSD UNR

Event ID   nc71348851

[Mizar]

Good post Thirty, you beat me to it, is this the offshore quake predicted by some for 11 am yesterday?  It sure makes a huge red square on the EQ map, any Tsunami word?
  Mizar

[thirtyhz]

Gotta be, Mizar...very close to predicted timeframe, Pacific time.

From NOAA:

All Regions    Pacific Ocean    Hawaiʻi    Indian Ocean    Caribbean Sea
Data last checked at Fri, 5 Feb 2010 00:42:10 +0000.  (UTC)
No Current Warning, Watch, or Advisory in Effect
Image last created on Wed, 20 Jan 2010 11:22:06 +0000.

And, the USGS has revised the magnitude (but not by much):

Earthquake Details
Magnitude   5.9
Date-Time   

    * Thursday, February 04, 2010 at 20:20:21 UTC
    * Thursday, February 04, 2010 at 12:20:21 PM at epicenter
    * Time of Earthquake in other Time Zones

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

Location Uncertainty   horizontal +/- 1.4 km (0.9 miles); depth +/- 2 km (1.2 miles)
Parameters   Nph=101, Dmin=50 km, Rmss=0.35 sec, Gp=227°,
M-type=regional moment magnitude (Mw), Version=A
Source   

    * California Integrated Seismic Net:
    * USGS Caltech CGS UCB UCSD UNR

Event ID   nc71348851

It's darn to close to EXACTLY the same spot as the Jan 9 quake.  6.5 was centered 22 miles from Ferndale, depth 10.2 miles.

Today's quake was 3 miles closer to crust.