Flash flood warnings issued across California and New Mexico amid heavy rainfall threats

The National Weather Service issued flash flood warnings across parts of Southern California and New Mexico on Sept. 23–24, 2026, citing thunderstorms and dangerous flooding. In the Twentynine Palms area, 0.75–1.25 inches of rain had fallen, with additional heavy rain possible and life-threatening flooding expected. A separate warning covered Highway 74 between Anza and Palm Desert and between Mountain Center and Anza, where rainfall rates of 1.25–1.75 inches per hour were forecast. In New Mexico, warnings covered parts of Dona Ana and El Paso counties, including Las Cruces, Chaparral, Anthony, El Paso, Horizon City, Santa Teresa and Socorro, after 1–1.5 inches of rain fell, with more expected. Officials urged people to avoid flooded roads and seek alternate routes.
In the Twentynine Palms warning area, the NWS said a further 0.75 to 1.5 inches of rain was possible and included Twentynine Palms Base among the locations at risk.
For the warned parts of Dona Ana and El Paso counties, officials forecast another 0.5 to 1 inch of rain on top of the 1 to 1.5 inches already recorded.
The NWS warned that hilly terrain in the Highway 74 area has hundreds of low-water crossings that can become dangerous in heavy rain, and urged drivers not to cross flooded roads.
The Riverside County warning for the two Highway 74 stretches was issued at 2:33 p.m. and was scheduled to remain in effect until 4:30 p.m.
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