FONTANA (CBSLA) — Flooding was the big concern Tuesday night across the Inland Empire as the first of two storm systems moves into the Southland — bringing with it the potential to melt last weekend’s snowfall.

The first few sprinkles started falling in the early evening — just enough to wet windshields — but heavier rains were expected to pick up overnight and into the morning hours.

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“Once it rains, everyone starts freaking out a little bit,” Kevin Carcano, a Fontana resident, said.

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But it was not just the rain or the expected traffic that people were worried about — a flash flood watch will be in effect from 6 a.m. to 6 p.m. for most of the Inland Empire and Orange County.

“I’ll be driving around 6 in the morning to go to work,” Carcano said. “Hopefully it’s not too bad.”

For those concerned about debris flows or localized flooding as a result of the heavy rains, area fire departments have sandbags available for residents to pick up.

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The National Weather Service reminded people who have to be out in tomorrow’s storms to slow down, leave larger distances with vehicles in front and turn wipers and headlights on while driving.