Last Updated: Monday, August 25, 2014

Strongest earthquake in 25 years in Napa, California injures 172

A shallow magnitude 6.1 earthquake has been recorded 6 km (4mi) NW of American Canyon, California. It is the strongest earthquake to hit the Bay Area since 1989, CNN reported. Follow latest updates below:

Update 23:50 UTC
Napa earthquake has injured at least 172 people.

Below is the  report published by the City of Napa at 1 PM local time (via Earthquake Report).

INJURIES: 120 patients have been treated or are being treated at Queen of the Valley Hospital. Three patients suffered critical injuries – 2 adults and 1 child.

FIRES:  Four mobile homes were destroyed and two others are involved in an active fire on Orchard Avenue at the Napa Valley Mobile Home Park in north Napa. Two other fires in residential areas were extinguished by Napa fire crews.

STREET CLOSURES: First, Second and Third Streets are closed from Jefferson to Soscol and Main Street is closed from Third to Pearl due to damaged structures. The public should stay out of these areas. There are reports of buckled streets and sidewalks in the Browns Valley area and south toward Carneros. Old Sonoma Road is closed from Buhman Avenue to Congress Valley Road. No other streets are closed in these areas at this time.

STRUCTURES DAMAGED: 15 or 16 buildings in the City have been red-tagged as uninhabitable due to damage from the quake. One of these is the Napa Senior Center which will be closed until further notice. A list of these structures will be posted when available.

GAS LINES: PG&E crews are responding to approximately 100 reported gas leaks or odor of gas reports.

WATER SUPPLY: There are approximately 60 water main leaks. Both water treatment plants running, no damage. Some areas have no water due to main breaks and some areas no or low pressure. Water remains safe to drink. If needed the City will open water stations available to the public.

SHELTERS: The Red Cross evacuation center is open at the Crosswalk Community Church, 2590 First Street. Pets can be sheltered at the Napa County Animal Shelter on Hartle Court.

SCHOOL CLOSURES: All Napa Valley Unified School District campuses will be closed on Monday Aug. 25. Justin Siena High School will also be closed. Drop boxes for debris will be placed at all public schools.

Update 12:20 UTC
According to the CNN, it is the strongest earthquake to hit the Bay Area since 1989.

Update 11:30 UTC
Photo below shows damage to a building in Napa, California (Twitter / @Lyalldavenport).


Update 11:20 UTC
Below is a twitter image (@Thecray_17) from the earthquake area.


Update 11:10 UTC
According to the Rohnert Park police in Sonoma County, there has been several power outages. The utility provider PG&E's map has shown at least 15,000 customers without power across Northern California.

Update 10:55 UTC
GDACS has issued a green earthquake alert in United States. There are 7,688,843 people within 100 km of the earthquake epicenter.


Update 10:48 UTC
Shaking Intensity
VII (Very Strong): American Canyon, Napa, Suisun
VI (Strong): Sonoma, BEnicia and Fairfield
IV (light): Sacremento, Stockton, San Francisco, Oakland
III (Weak): Fremont

Update 10:45 UTC
USGS is mentioning MMI IX, the violent earthquake. However, USGS may revise the MMI within minutes. 

Update 10:35 UTC
Another magnitude 4.0 earthquake has been recorded 11km NE of Lamont, California

Related Post: Latest natural calamities in United States

M 6.0 strong earthquake shakes Napa, California today, the U.S. Geological Survey reported.

According to the U.S. Geological Survey, the quake's epicenter was located 9 km (6mi) SSW of Napa. It was 6.7 miles deep.

10:20 UTC (local time 2014-08-24 03:20 @ epicenter)

Epicenter Location
6 km (4mi) NW of American Canyon, California
9 km (6mi) SSW of Napa, California
13 km (8mi) NNW of Vallejo, California
14 km (9mi) SE of Sonoma, California
82 km (51mi) WSW of Sacramento, California

Original post: Natural Disasters List August 24, 2014

In collaboration with