![]() Storms don’t usually hit Southern California because prevailing winds usually push them northeastward into Mexico and other parts of the U.S. The company said conditions in the Pacific could make it difficult for a ship to recover the rocket booster. SpaceX delayed the launch of a satellite-carrying rocket from a base on California’s central coast until at least Monday. The region could face once-in-a-century rains and there’s a good chance Nevada will break its all-time rainfall record, said meteorologist Jeff Masters of Yale Climate Connections and a former government in-flight hurricane meteorologist.Ĭities across the region, and on both sides of the border, were setting up stations for residents to get sandbags to safeguard properties against floodwaters, while the National Park Service planned to close vulnerable areas of Joshua Tree National Park, east of Los Angeles, on Friday evening, and suspend all back country camping. “The rain is the biggest potential threat,” said Colorado State University hurricane researcher Phil Klotzbach. ![]() Hurricane officials said the storm could bring heavy rainfall to the Southwestern United States that could dump 3 to 6 inches in parts with isolated amounts of up to 10 inches to portions of southern California and southern Nevada, hitting large desert areas unaccustomed to much rain. It was increasingly likely that Hilary would reach southernmost California early Monday while still at tropical storm strength, though widespread rain was expected to begin as early as Saturday, the National Weather Service’s San Diego office said. It was moving northwest at 10 mph (17 kph), and was expected to turn further toward the north. Some 18,000 soldiers were put on alert.Įarly Friday, Hilary was centered about 360 miles (575 kilometers) south-southwest of Los Cabos on the southern tip of the Baja peninsula. The Mexican government extended its hurricane watches and warnings northward for parts of Baja California peninsula, and also issued a tropical storm watch for parts of mainland Mexico. The Mexican government said a weakened Hilary might skim a sparsely populated area on the western edge of the Baja peninsula early Sunday, and then perhaps hit between the cities of Playas de Rosarito and Ensenada. The watch warned of numerous potential threats to life and property including extreme flooding, mudslides and tornados. 25, 1939, according to the National Weather Service. No tropical storm has made landfall in Southern California since Sept. The National Hurricane Center on Friday issued its first ever tropical storm watch for much of Southern California, covering a wide swath of the region from the coast to the interior mountains and deserts. Nevertheless, it was forecast to still be a hurricane when approaching Mexico’s Baja California peninsula on Saturday night, and a tropical storm when approaching Southern California on Sunday. Hilary had sustained winds near 145 mph (230 kph) early Friday, and was expected to strengthen a bit more before starting to weaken. ![]() Then, a ridge of high pressure builds over the Rockies or Plains that taps more moisture in the atmosphere from the Gulf of Mexico or Southern Plains.MEXICO CITY (AP) - Hurricane Hilary grew rapidly into Category 4 strength off Mexico’s Pacific coast on Friday and could reach Southern California as the first tropical storm there in 84 years, which forecasters warned could cause extreme flooding, mudslides and even tornados. This flow from these water bodies is a reversal of the usual flow from land areas to the ocean. Pressure differences between the hotter land and cooler water draw more humid air from the Gulf of California and Eastern Pacific Ocean. This seasonal wind shift happens gradually through summer when a thermal low develops due to intense heating of the land, but large bodies of water nearby don't warm as quickly. The monsoon is a seasonal change in winds. However, in most of the region, it doesn't really kick in until late June or early July. Monsoon season starts Thursday in the southwestern United States and lasts through Sept. The Southwest monsoon will arrive soon, but in parts of Arizona and the Desert Southwest, a weird May weather pattern mimicked the summer thunderstorm season in some ways. Sign up for the Morning Brief email newsletter to get weekday updates from The Weather Channel and our meteorologists. ![]()
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