There were 101 crash reports received by local California Highway Patrol dispatchers between 12 and 8 a.m., the agency reported.
Almost half of those crashes -- 45 -- were reported between 6 and 8 a.m., according to the CHP, which typically receives 50 to 75 crash reports during a full non-rainy day. Most of this morning's crashes were considered minor, with no injuries or only minor injuries involved.
The CHP tally does not include crashes that occurred on city streets or unincorporated roadways patrolled by other law enforcement agencies.
This week's precipitation is the product of a strong Pacific storm that arrived Tuesday and is expected to begin tapering off later today. Throughout the day Tuesday, the CHP logged a whopping 328 crashes.
The National Weather Service said that in the past 24 hours, the following rainfall totals have been recorded around the county: 0.76 inches in Oceanside, 0.54 in Solana Beach, 0.55 in Mission Valley, 0.51 at Lindbergh Field, 0.31 in San Ysidro, 1.22 in Rainbow, 0.87 in Valley Center, 0.73 in Ramona, 0.63 in Santee, 0.55 in La Mesa, 2.49 on Palomar Mountain, 1.25 in Julian, and 0.13 in Borrego Springs.
The NWS issued a coastal flood advisory through 10 a.m. Thursday, saying low-lying areas along the coast were at risk of flooding due to the high tide brought on by the unstable weather. Oceanside, Cardiff, La Jolla and Imperial Beach are especially vulnerable, according to the agency.