Earthquake measuring up to 6.1 Mw strikes offshore northern California
Strong earthquake measuring up to 6.1Mw struck offshore northern California about 56 km (35 miles) WNW (282°) of Petrolia, CA, Thursday, February 4, 2010 at 20:20 UTC.
The earthquake was felt as far north as Oregon’s Grant Passs, south to San Francisco and east to Redding, reports said.
The quake occurred about 27km (17 miles) southwest of the M6.7 January 10 (UTC) quake that shook Ferndale and Humboldt Hill, CA.
Earthquake Location
Click image to enlarge. Source: NEIC/USGS
Tsunami Info
Although the quake struck at a depth of about 11 km, it wasn’t strong enough to create a significant tsunami.
Injury/Damage
Items reportedly fell from walls and shelves but there was no reports of serious damage, or any injuries as of posting.
The January 10 quake (UTC) caused at least $40 million in damage and a serious injury when an elderly woman broke her hip in a fall, Mercury News reported.
Earthquake Details:
- Magnitude as reported by USGS: 5.9 [Max magnitude estimated by Fire-Earth: 6.1Mw]
- 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)
- Source:
- California Integrated Seismic Net:
- USGS Caltech CGS UCB UCSD UNR
- Event ID: nc71348851
Shakemap
Earthquake Shakemap. Source: CISN/USGS
Seismic hazard Map
Click image to enlarge.
USGS Quaternary Fault and Fold Database for the United States: Eureka 1° x 2° Sheet
Click image to enlarge.
Cascadia Subduction Zone
Cascadia Subduction Zone. Source: USGS
Quake Animations
Related Links:
Fire Earth 