Forecasters warned Monday that a powerful storm system is approaching San Diego County that could trigger flooding and debris flows, particularly in recent burn areas.

The storm is expected to bring about 2 inches of rain to northern and southern parts of the county between Wednesday and Friday

The National Weather Service reported a 10% to 15% chance of light precipitation on Tuesday as the marine layer deepens from coastal to foothill areas throughout the county.

According to the National Weather Service, a flood watch is in effect for San Diego County from Thursday afternoon through late Thursday night.

There is up to a 15% chance of light precipitation on Tuesday as the marine layer deepens from coastal to foothill areas throughout the county, with the heavier rain arriving later in the week, forecasters said.

SAN DIEGO (FOX 5/KUSI) — At long last, San Diego received its first significant rainfall — and snow — in months over the weekend. The precipitation, which was brought on by a cold low pressure system, was a much-needed break from stubborn arid conditions primed for potentially erratic fire behavior.