The U.S. Supreme Court announced Monday that it will not hear an appeal by California water agencies in the Agua Caliente Band of Cahuilla Indians’ landmark lawsuit asserting rights to groundwater beneath the tribe’s reservation. The Desert Water Agency and the Coachella Valley Water Disitrict had appealed to challenge a decision by the Ninth Circuit Court of Appeals, which ruled the tribe has a right to groundwater dating back to the federal government’s creation of the reservation in the 1870s.

After a record-hot Thanksgiving weekend, a one-day cold front is expected to move into Southern California on Monday, according to the National Weather Service. Forecasters gave about a 30 to 40 percent chance that rain falling in the Central Coast area Sunday night would extend into Southern California on Monday morning. If precipitation does arrive, the weather service said, it was likely to be very light, maybe just sprinkles. The foothills on the coastal sides of the mountains have the highest rainfall potential, up to a quarter-inch.

It was our saving grace: Last winter, a mostly empty New Melones Lake swallowed up torrents of water that otherwise would have had to be dumped into a lower watershed that already was flooding. Without all of that room at New Melones, the damage along the lower San Joaquin River and in the Delta could have been much worse.

Thursday, Nov. 23 was the hottest Thanksgiving Day ever in Los Angeles and Newport Beach. The noon temperature in downtown L.A. hit 91 degrees at the official station, at USC. The previous record, 90, was set on Nov. 23, 1903, National Weather Service meteorologist Rich Thompson said. In Orange County, one NWS weather gauge at Newport Beach showed 89 degrees at 1 p.m., way past the previous record of 81 set in 2002. Santa Ana was at 88 at midday, below the 91 degree record set in 1950, NWS meteorologist Greg Martin said. Forecasters said heat records could also be set Thursday in the San Fernando and Antelope Valleys.