A warm front moved through the region on 4/8 and brought waves of showers from south to north. Following the warm front, an upper low moved into the California Bight and stalled on this day, bringing 3 to 5 inches of rain to Orange County and San Diego County through 4/10. Many locations recorded their highest daily rainfall record: San Diego (1.98"), Chula Vista (1.56"), and Vista (3.18"). Oceanside Harbor recorded their wettest 24-hours on record with 3.06". Six-day storm totals were 3 to 7 inches along the coast and valleys, 4 to 8 inches with locally 10 in the mountains, and 1 to 2 inches in the deserts. Rainfall in San Diego County was 3-4” inches in a 24 hour period. All-time daily rainfall records were broken on 4/10 in Oceanside and Vista, each recording over 3”. Monthly rainfall records were broken for April at those locations, each receiving over 6” in just six days. Numerous flash floods and floods resulted. Flood waters combined with mud, boulders and debris in Bonsall, Oceanside, Carlsbad, Encinitas, Vista, Pacific Beach, Del Mar, Valley Center, Rancho Penasquitos and several spots in Mission Valley. Highway 78 in Vista was closed in both directions from flooding on adjacent Buena Vista Creek. Numerous swift-water rescues were made all across San Diego County. The San Diego River at Fashion Valley reached a peak of 12.5 feet.