FRESNO, Calif. (AP) - Safety experts are bracing for the two foggiest months of the year in California's San Joaquin Valley and hoping an intricate warning system continues to keep drivers safe.

Areas along Highway 99 south of Fresno are notorious for dense tule fog, a thick patchwork that materializes after rain an average of 35 days a year.

The sudden transition from sun to fog often catches drivers by surprise.

In 2007 a 108-vehicle pileup killed two people and closed 99 for half the day. Officials began planning then for a fog warning system along the highway's most dangerous 12 mile stretch south of Fresno.

Since 2010 Caltrans has operated six weather stations, 12 cameras, 39 electronic message signs and 41 microwave sensors that automatically warn drivers when conditions become dangerous.

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Despite being more than 3,000 miles away, people here in the valley continue to step up for Hurricane Sandy victims.

This past weekend, Pastor Bob Grenier of Calvary Chapel in Visalia returned from New Jersey.

The pastor volunteered with a network of pastors across the state, which traveled to the East Coast to feed those in need.

Pastor Bob Grenier says "The interior of their homes are completely ruined. All their furniture is gone because salt water destroys everything, carpet ruined, and a lot of people have nowhere to go."

This isn't the only mission's trip planned.

More teams of volunteers, many from pastor Bob's church, will be headed to the East Coast in the coming months.

If you would like to help you can send donations to this address:

Calvary Chapel Visalia
P.O. Box 6219
Visalia, CA 93290

The pastor says 100% of your donation will go directly to helping feed and care for hurricane victims.

Wet weather is back in the Valley.

You can track the rain by clicking on this link: www.kmph.com/weather.