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Wet conditions and rainfall accumulations prior to spring meant that groundwater levels in many areas have held up well, so far.

Engineers did years of testing on the ground suggesting they could limit dust accumulation, by using polymers designed to dissipate the electrostatic charge attached to the dust.

"Most mountains are now filled with fallen leaves and pine trees... This accumulation has become a significant factor in accelerating the spread of wildfire," says Baek Min-ho, a disaster prevention specialist at Kangwon National University.

It may also deliver a few more inches of snow, including along the Grapevine portion of the 5 Freeway, adding to the hefty accumulation of fresh powder that fell over the region’s mountains this week.

The San Bernardino County mountains could see wet snow with accumulations of 3 to 6 inches above 6,500 feet and 6 to 8 inches above 8,500 feet.