Powerful storms have hit California: residents have been warned about heavy rains, landslides, and possible evacuation

California has been struck by powerful rainstorms. The first storm has already hit both Northern and Southern California, and a second, even more potent one, is expected by the end of the week.

Heavy rains, flash floods, and wind gusts of up to 70 mph have already battered Californians this week, according to ABC News. Brian Ferguson, a spokesperson for the state's Emergency Management Office, warns of a significant ongoing threat to residents.

Northern California has already experienced the brunt of the storm. Rainfall totaling 3 to 5 inches, downed trees, and flooded roads are just some of the aftermaths of the initial storm.

Rainfall in Southern California commenced Wednesday evening and peaked Thursday morning. The rainfall intensity reached 1 inch per hour, resulting in road flooding in the Los Angeles area.

Nick Schuler of the California Fire Department urges residents to prepare for potential evacuations. "Do not attempt to drive through moving water, and most importantly, if you are asked to evacuate, please do so promptly," he cautioned.

The initial downpour concluded by Thursday evening, but the risk of flooding persists.

The storm then moved through the southwestern Four Corners region but is forecasted to return to California by Sunday.

Overall, coastal areas of the state from San Francisco to Los Angeles are expected to receive between 5 to 10 inches of rainfall.

Californians have been alerted to the possibility of flooding, river overflow, and rockslides early next week.