Santa Anita called off thoroughbred racing Saturday as rain continued to disrupt the Los Angeles-area track’s winter-spring season.

Los Alamitos later said its Saturday quarter-horse racing was rained out too.

The announcement by Santa Anita in an “attention horsemen” text shortly after 7 a.m. Saturday said a decision about today’s program will be made this morning.

A day of racing is being added on Thursday, Jan. 15, on top of the makeup day already scheduled for this Thursday, the announcement said.

Since postponing opening day from its traditional day-after-Christmas spot on the calendar to Dec. 28, Santa Anita has been able to hold only one racing card on its original date. That was Friday, following rainouts Wednesday and Thursday this past week.

The Santa Anita card Saturday was to have started at noon, go on until after 4 p.m. and have nine races featuring the Santa Ynez Stakes, a 7-furlong sprint for 3-year-old fillies headed by Breeders’ Cup Juvenile Fillies runner-up Explora. Santa Anita said plans for those races will be announced later.

The Los Alamitos card was to have begun at 5:45 p.m., go on until after 9 p.m. and offer eight races.

The Weather Channel’s forecast early Saturday called for a chance of rain in Southern California rising to 100% in early afternoon

Frequent postponement or cancellation of racing when significant rain is forecast is one of the safety-minded protocols put in place by the sport in California since a spike in the number of horse deaths in early 2019, coinciding with a period of unusually sustained wet weather.

Santa Anita’s Classic Meet is scheduled to run through April 5 and be followed by its Hollywood Meet going to mid-June, with racing Friday, Saturday and Sunday afternoons most weeks. Los Alamitos runs virtually year-round, with racing Saturday and Sunday nights.