For Joshua Park of Scripps Ranch, snow is nothing new. He grew up in South Korea. But when flurries came Sunday to the Laguna Mountains, he packed up the family and drove out to Sunrise Highway.

The challenge was rousting his sleeping kids from the car, where it was warm and comfy compared with the outdoor temperature of 37 degrees.

John Armstrong brought daughters Shyanne and Savannah up from El Cajon, but had the opposite problem. The girls, 8 and 11, didn’t want to stop building a snow mountain on a large tree stump.

Elsewhere, kids and grownups found a sledding hill, and some did “penguins.”

What’s a penguin? That’s sliding down a hill on your stomach.

A boulder created a traffic hazard when it slid down onto southbound state Route 79 about 3 p.m., but traffic was warned by an A-frame barricade and steered around it until it could be removed.

At Palomar Mountain, this much snow hasn’t fallen on May 7 since 1964. The old record of 2.5 inches was blown away by Sunday’s 6 inches, according to the National Weather Service.

The San Diego station of the Weather Service also noted these records for May 7 — for the day’s maximum highs being this low.