By Associated Press and Ashley Collman for MailOnline The 6.0 magnitude earthquake that rocked northern California this weekend may not have been deadly but it was certainly disastrous to the historic buildings in downtown Napa. The capital of the state's wine country was littered with bricks Sunday morning after the earthquake caused  brick buildings to crumble, despite many being retrofitted to withstand the tremors. Experts say damage could exceed $1billion. Now locals are calling for an alert system to be put in place to warn them the next time a major earthquake hits - even if it's just a few seconds to duck and cover.
@highlight
Northern California was hit with a 6.0 magnitude earthquake early Sunday morning
@highlight
The earthquake proved especially disastrous in Napa, where historic buildings crumbled in the shaking
@highlight
Damage estimated to total more than $1billion
In @placeholder, it may be closer to reality than most state residents realize.