Kyle Doan was last seen on Monday morning when he and his mother became stranded in their vehicle near San Miguel.
Authorities say that Cal Fire responded to a 911 call to help a vehicle that had become stuck in the San Marcos Creek creekbed.
Rescue teams managed to pull his mother from the dangerous floodwater but the little boy was swept away from the vehicle by the waters.
As of Wednesday morning, he remains missing with only a single shoe so far recovered.
Cal Fire, the San Luis Obispo County Sheriff’s Office, San Luis Obispo County Search and Rescue and the California Highway Patrol were all drafted in to search for the missing child on Monday.
A CHP helicopter was able to get into the air at around 10.30am to help with the search, to go along with 17 firefighters searching on the ground.
But emergency responders were forced to call off the search after just five hours due to the treacherous conditions which made it unsafe for them to continue their efforts.
The search resumed again on Tuesday morning during a break in the intense storms, with the USAR (Underwater Search and Rescue) Team and air operations drafted in to help.
“The conditions, however, remain extremely dangerous. The water level is high and continues to be fast moving,” the San Luis Obispo County Sheriff’s Office said in a press release.
“The public is strongly cautioned not to conduct self-initiated searches and put themselves in harms way and become a victim requiring resources that would otherwise be used for searching.”
Later on Tuesday, the search had to be called off for a second time because of low visibility.
“The search for Kyle Doan has just concluded for today due to low visibility. It will continue first thing tomorrow morning,” the sheriff’s office said.