MAINSHOCK
Magnitude : 5.87 Mw (A moderate quake)
Time : 04 Feb 2010 00:20:22 PM, PST
: 04 Feb 2010 20:20:22 GMT
Coordinates : 40 deg. 25.06 min. N, 124 deg. 55.16 min. W
: 40.4177 N, 124.9193 W
Depth : 12.6 miles ( 20.2 km)
Quality : Excellent
Location : 33 mi. ( 54 km) W from Petrolia, CA
: 47 mi. ( 76 km) WSW from Eureka, CA
Event ID : NC 71348851
STRONG AFTERSHOCKS (Magnitude 5 and larger) -
At this time (6 hours after the mainshock) the probability of a strong and possibly damaging aftershock IN THE NEXT 7 DAYS is approximately 34 PERCENT
EARTHQUAKES LARGER THAN THE MAINSHOCK -
Most likely, the recent mainshock will be the largest in the sequence. However, there is a small chance (APPROXIMATELY 5 TO 10 PERCENT) of an earthquake equal to or larger than this mainshock in the next 7 days.
WEAK AFTERSHOCKS (Magnitude 3 to 5) -
In addition, approximately 15 to 40 SMALL AFTERSHOCKS are expected in the same 7-DAY PERIOD and may be felt locally.
This probability report is based on the statistics of aftershocks typical for California. This is not an exact prediction, but only a rough guide to expected aftershock activity. This probability report may be revised as more information becomes available.
Source: http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/nc71348851.php#news
Magnitude : 5.87 Mw (A moderate quake)
Time : 04 Feb 2010 00:20:22 PM, PST
: 04 Feb 2010 20:20:22 GMT
Coordinates : 40 deg. 25.06 min. N, 124 deg. 55.16 min. W
: 40.4177 N, 124.9193 W
Depth : 12.6 miles ( 20.2 km)
Quality : Excellent
Location : 33 mi. ( 54 km) W from Petrolia, CA
: 47 mi. ( 76 km) WSW from Eureka, CA
Event ID : NC 71348851
STRONG AFTERSHOCKS (Magnitude 5 and larger) -
At this time (6 hours after the mainshock) the probability of a strong and possibly damaging aftershock IN THE NEXT 7 DAYS is approximately 34 PERCENT
EARTHQUAKES LARGER THAN THE MAINSHOCK -
Most likely, the recent mainshock will be the largest in the sequence. However, there is a small chance (APPROXIMATELY 5 TO 10 PERCENT) of an earthquake equal to or larger than this mainshock in the next 7 days.
WEAK AFTERSHOCKS (Magnitude 3 to 5) -
In addition, approximately 15 to 40 SMALL AFTERSHOCKS are expected in the same 7-DAY PERIOD and may be felt locally.
This probability report is based on the statistics of aftershocks typical for California. This is not an exact prediction, but only a rough guide to expected aftershock activity. This probability report may be revised as more information becomes available.
Source: http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/nc71348851.php#news