Napa is a tight-knit community, looking out for each other, but residents are being warned about predatory contractors looking to take advantage of them.

The California State License Board is urging Napa quake victims to only hire licensed contractors for repairs. 

Steve Sands is the Board's Registrar and he says "Unfortunately, unlicensed, and sometimes unscrupulous, people show up shortly after natural disasters and try to take advantage of victims at a vulnerable time."

Residents can check the license status of contractors in the state at

Starting this morning, CSLB's special Disaster hotline will be staffed Monday through Friday between 8 a.m. and 5 p.m. The number is 800-321-CSLB (2752).

State of Emergency for Napa County 

Following the quake, Governor Jerry Brown is issuing a state of emergency for all of southern Napa County.

Brown says because of the continued number of aftershocks that have heavily damaged buildings and property, California's office of Emergency Services is remaining fully staffed through most of the week.

They are working closely with at least 20 other agencies, including the Federal Emergency Management Agency.

FEMA officials say they've deployed liaison officers to help coordinate any requests for federal assistance.

FEMA also deployed a National Incident Management Assistance Team, making sure all needs are met, including access to food, water and temporary shelters. 

Residents Brace for Aftershocks

And as you can imagine, the danger of aftershocks is still a threat in Napa and keeping people fairly nervous today.

Emergency officials say there's a 50 percent chance of aftershocks at magnitudes of 3.0 to 5.0 -- or even larger -- striking in the same area within the next few days.

As of late last night, the US Geological Survey reported at least six aftershocks near Napa and American Canyon between 2.5 and 3.6 magnitude.

Aftershocks are dangerous because they can re-shift and move structures that have not completely settled, causing further damage.

State seismologists say they believe in the next few days, there's a five-percent chance of an even larger quake, bigger than Sunday's 6.0, striking again.