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Last big storm of winter slows traffic to a crawl, sends students home early and pelts San Diego County with hail

By Friday morning, 6 inches of snow is expected in the upper reaches of the area of Mount Laguna.

By mid-afternoon Thursday, Interstate 8 remained open to engers and trucks heading in both east and westbound. Snow reached as far south as Pine Valley on Thursday morning. (Nelvin C. Cepeda / The San Diego Union-Tribune)
By mid-afternoon Thursday, Interstate 8 remained open to engers and trucks heading in both east and westbound. Snow reached as far south as Pine Valley on Thursday morning. (Nelvin C. Cepeda / The San Diego Union-Tribune)
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It wasn’t the kind of “March Miracle” that had erased San Diego County’s water worries in the past. But the loud and rowdy storm that drenched the region Thursday greatly eased the palpable threat of wildfires, slowed a deepening drought and gave outdoor plants a good, long drink.

The cold, volatile system was far larger than the one that hit a day earlier. By 2 p.m. Thursday, the two-day rainfall totals were in the 1.5-to-2-inch range along the coast, from Camp Pendleton to San Diego, and even higher inland, from Miramar to Julian.

With spring a week away, the second storm also was dropping light snow on the oak and pine trees of Mount Laguna. It was a pretty sight — and for drivers, a vexing one, as the snow forced them to put chains on their tires to climb the highway twisting north from Interstate 8. The same thing happened on state Route 79, where age into the area of Lake Cuyamaca was limited to residents only.

The weather — including pea-sized hail in many spots — led the Spencer Valley School District in Santa Ysabel to cut short the school day on Thursday, affecting 3,800 students.

And a surprise shower of heavy hail pelted Vista and San Marcos shortly before 2 p.m. — a quick hit during a particularly angry downfall that left the ground covered in icy chunks mimicking snow.

With the stormwater systems actively flowing, 66-year-old Jose Sanchez, a local resident, re the devastating floods of last year. He speaks at the South Trails Park bridge in Southcrest on Thursday, March 13, 2025 in San Diego. (Alejandro Tamayo / The San Diego Union-Tribune)
With the stormwater systems actively flowing, 66-year-old Jose Sanchez, a local resident, re the devastating floods of last year. He speaks at the South Trails Park bridge in Southcrest on Thursday, March 13, 2025 in San Diego. (Alejandro Tamayo / The San Diego Union-Tribune)

The freeways, meanwhile, were a mess. California Highway Patrol officers were busy responding to “just a ton of crashes” during the morning commute due to rain that at times blinded drivers.

On Thursday morning, Caltrans closed the on-ramp to eastbound SR-78 at El Camino Real in Oceanside due to flooding. Nearby in North County, the far right lane of eastbound state Route 78 was also closed around 8:30 a.m. because of flooding, and crews were trying to determine if the whole freeway needed to be shut down due to standing water, Officer Jim Bettencourt said.

Similar problems were reported in south San Diego, with lanes reportedly underwater in both directions of Interstate 805 near Main Street. Crews worked to clear blocked drains in the area.

Drivers also were finding flooding along Pacific Highway under northbound Interstate 5, near the Marine Corps Recruit Depot, which Bettencourt said was a “usual spot” for water to accumulate in heavy storms.

Lifeguards with Border Patrol searching the area. Personnel from San Diego Fire-Rescue responded to a report of a person in the water in the Tijuana River Valley. Firefighters, a river-rescue team and a helicopter were all dispatched to Dairy Mart Road and Monument Road at the Tijuana River Valley on Thursday, March 13, 2025, in San Diego. (Alejandro Tamayo / The San Diego Union-Tribune)
Lifeguards with Border Patrol searching the area. Personnel from San Diego Fire-Rescue responded to a report of a person in the water in the Tijuana River Valley. Firefighters, a river-rescue team and a helicopter were all dispatched to Dairy Mart Road and Monument Road at the Tijuana River Valley on Thursday, March 13, 2025, in San Diego. (Alejandro Tamayo / The San Diego Union-Tribune)

The rain’s impact on traffic was noticeable at the interchange of Interstate 8 and Interstate 15, forecasters said. They also pointed to the runoff in San Diego.

The news wasn’t all bad.

Shortly after 11:10 a.m., personnel from San Diego Fire-Rescue responded to a report of a person in the water in the Tijuana River Valley.

Firefighters, a river-rescue team and a helicopter were all dispatched to Dairy Mart Road and Monument Road and conducted a search, but no body was found and the crews were released, a department spokesperson said.

Staff writer Teri Figueroa contributed to this report.

Lifeguards searching the area. Personnel from San Diego Fire-Rescue responded to a report of a person in the water in the Tijuana River Valley. Firefighters, a river-rescue team and a helicopter were all dispatched to Dairy Mart Road and Monument Road at the Tijuana River Valley on Thursday, March 13, 2025 in San Diego, California. (Alejandro Tamayo / The San Diego Union-Tribune)
Lifeguards searching the area. Personnel from San Diego Fire-Rescue responded to a report of a person in the water in the Tijuana River Valley. Firefighters, a river-rescue team and a helicopter were all dispatched to Dairy Mart Road and Monument Road at the Tijuana River Valley on Thursday, March 13, 2025 in San Diego, California. (Alejandro Tamayo / The San Diego Union-Tribune)
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