The National Weather Service has issued a flash flood warning for northwestern Solano County and southwestern Yolo County until 7 p.m. Sunday.
At 3:58 p.m., Doppler radar indicated a thunderstorm producing heavy rain over the Wragg Fire burn scar.
Flash flooding and debris flows are expected to begin shortly. The debris flows could consist of rocks, mud, vegetation and other loose materials.
Precautionary and preparedness actions include moving to higher ground, and not driving on flooded roads.
The heavy rains could trigger rockslides, mudslides and debris flows in steep terrain, especially in and around areas that were recently burned.