Hurricane Marie batters the shoreline near Capistrano Shores, in San Clemente, California (Allen J. Schaben / Los Angeles Times via Getty Images) He added: "We are preparing for this El Niño early because every Californian deserves to be safe in their home, connected to their community, and protected when severe weather comes." 

What is El Niño? 

If you don't already know, El Niño is a natural climate pattern that occurs when sea surface temperatures across the tropical Pacific Ocean rise well above average, fueling severe weather conditions around the globe. 

Experts warn that the oncoming storm season could trigger powerful tornadoes, huge ocean waves, higher sea levels, and unexpected disruptions to food supply chains. "Things that were in supermarkets and seen as relatively abundant may all of a sudden be in shortage," supply chain strategy expert Professor Richard Wilding told the BBC. 

Key food items to keep stocked up on 

With extreme weather threatening to leave shelves empty, health specialists are urging households to build a reliable emergency food stash before any potential crisis hits. Nutritionists have now revealed the essential staple items you should keep stocked up in your cupboard to ensure your family stays nourished during a prolonged emergency. 

Dr Sammie Gill, a senior nutrition scientist from the British Nutrition Foundation, says shoppers should prioritize complex carbohydrates like wheat biscuits, wholegrain cereals, crackers, oats, rice, and pasta. In the case of an emergency and you want to maintain a healthy diet, canned chickpeas and kidney beans are a must have (Getty Stock Images) For long-lasting protein, experts advise stocking up on canned chickpeas, lentils, kidney beans, unsalted nuts, peanut butter, and canned oily fish like tuna, mackerel, and sardines. Consultant dietitian Rebecca McManamon also highlighted to the broadcaster that she believes tinned fruit is a pantry essential, noting that you can drink the juice for added fluids, essential vitamins, and fiber. 

Both nutrition experts recommend keeping long-life milk found in the non-refrigerated aisle, as it provides a dependable source of protein, calcium, and liquid if clean water supplies drop. Pickled vegetables and pickled eggs also make the list as great long-term options to keep your diet varied during a prolonged blackout or severe weather disruption. Experts have suggested some long-life items to keep in your pantry Dieticians remind shoppers to aim for 1,500 to 2,500ml of fluid daily, adding that fluid-rich tinned foods can help meet hydration needs if bottled water runs low. However, experts warn shoppers to carefully inspect labels, advising against instant noodles, tinned soups, and processed meats due to their excessively high salt and saturated fat content. 

California Natural Resources Secretary Wade Crowfoot said the state is 'already taking steps now to protect communities from a potentially historic El Niño because we know how serious these weather extremes driven by climate change can be'. 

“Through the Governor’s state of emergency, we’re cutting red tape and fast‑tracking the flood‑protection and broader preparedness work communities need now,” he noted, before adding: “We’re mobilizing with our partners to safeguard people, infrastructure, and natural resources before the worst storms arrive.”