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☆ Powerful Santa Ana wind event to bring potentially dangerous fire weather to Southern California
▼ + stars: | 2024-12-09 | by ( Robert Shackelford | ) edition.cnn.com time to read: +3 min

A Potentially Dangerous Situation red flag warning was also issued for the Santa Susana Mountains until 10 a.m. Wednesday. These Potentially Dangerous Situations are rarely issued and are reserved for the most extreme events; however, climate change is increasing the frequency of these events. Last month, similar Santa Ana winds helped the Mountain Fire explode in size and send it tearing through neighborhoods, prompting evacuations and school closures. The timing of this Santa Ana Wind Event is similar to the Thomas Fire, which burned over 280,000 acres from December 2017 to January 2018 and is the ninth-largest wildfire in California history. The conditions will slowly begin to improve Wednesday as some of the Potentially Dangerous Situation warnings should expire.

Persons: Thomas, cnnweather Organizations: CNN, San, Santa, LA, Ventura, NWS, NWS Los Angeles Locations: Southern California, Ventura County, San Gabriel, Santa Monica, Santa Clarita Valley, San Fernando Valley, Santa Susana, Santa Ana, Santa, NWS Los, California, Santa Susanas, Malibu, Ventura, Simi Valley, San Fernando, Porter Ranch, Camarillo, Los Angeles

☆ Hurricane Otis expected to make landfall near Acapulco, Mexico, as Category 5 storm
▼ + stars: | 2023-10-24 | by ( Aya Elamroussi | ) edition.cnn.com time to read: +3 min

CNN —Hurricane Otis is expected to make landfall Wednesday morning as a Category 5 storm near Acapulco in Mexico, threatening to lash the coastal region with destructive winds, heavy rainfall and potentially “catastrophic storm surge,” forecasters say. Landfall is expected by early Wednesday near or just west of the city, a beach resort town on Mexico’s Pacific coast, the hurricane center said. The heavy rainfall could lead to flash and urban flooding as well as mudslides in higher terrain areas, the hurricane center warned. If Otis makes landfall as a Category 5 hurricane, it would be the first Category 5 landfall for the East Pacific, according to the NOAA Hurricane Database. The previous strongest landfall was Hurricane Patricia in 2015, which made landfall as a Category 4 Hurricane with winds of 150 mph.

Persons: Hurricane Otis, Otis, cnnweather Otis ’, Phil Klotzbach, Patricia Organizations: CNN, Hurricane, Punta Maldonado, Colorado State University, East, NOAA, Otis Locations: Acapulco, Mexico, Punta, Zihuatanejo, Lagunas, Puerto Vallarta, Manzanillo

☆ Tropical Storm Calvin: Hawaii governor declares state of emergency as Tropical Storm Calvin threatens to deliver strong winds and torrential rain to the Big Island
▼ + stars: | 2023-07-19 | by ( Robert Shackelford Aya Elamroussi | Robert Shackelford | Aya Elamroussi | ) edition.cnn.com time to read: +2 min

CNN —Tropical Storm Calvin strengthened Tuesday as it continued to approach Hawaii’s Big Island, where more than a million people are under a state of emergency and a tropical storm warning is in effect. Calvin is forecast to pass south of Hawaii County tonight, bringing a period of flash flooding, dangerous surf and damaging winds. Calvin is expected to weaken as it moves westward to the south of the other Hawaiian Islands Wednesday and Wednesday night. Calvin is expected to remain a tropical storm for a day and a half before weakening later this week. “Calvin is forecast to pass south of Hawaii County tonight, bringing a period of flash flooding, dangerous surf and damaging winds.

Persons: Calvin, StSnEHgzif, “ Calvin, Josh Green, “ Organizations: CNN, National Hurricane Center, Calvin, National Weather Service, Hawaii Gov Locations: Hilo, Hawaii County, Honolulu, Hawaii, Maui

Since forming in the Bay of Bengal early Thursday, tropical Cyclone Mocha has intensified to a high-end Category 4 Atlantic hurricane, with sustained winds of 240kph (150mph). Tropical cyclones (also known as hurricanes, typhoons and tropical storms depending on ocean basin and intensity), feed off ocean heat. They need temperatures of at least around 27 degrees Celsius (80 Fahrenheit Fahrenheit) to form, and the warmer the ocean, the more moisture they can take up. The waters in the Bay of Bengal are currently around 30 degrees Celsius (86 Fahrenheit Fahrenheit), about 2 degrees Celsius (3.6 degrees Fahrenheit) warmer than average for May. Climate-change fueled sea-level rise adds to the risks, worsening storm surges from tropical cyclones and allowing them to travel further inland.

☆ Cyclone Ilsa rapidly intensifies as it approaches landfall in Western Australia
▼ + stars: | 2023-04-13 | by ( Hilary Whiteman | ) edition.cnn.com time to read: +3 min

Brisbane, Australia CNN —A massive cyclone swirling off Australia’s western coast will likely make landfall as a category 5 storm – the strongest on the national scale – according to the country’s official forecaster. “Communities in those coastal areas hopefully are already hunkered down, ready to ride this one out. The last major cyclone of this strength to hit the Western Australian coast was Cyclone George in 2007 with winds that reached 275 kph (170 mph). The strongest storm ever to hit any part of Australia was Cyclone Monica, which arrived in 2006 with sustained winds around 290 kph (180 mph), as it swept across the eastern and northern parts of Australia. That cyclone missed highly populated areas but brought down trees and caused severe damage to vegetation along with a storm surge up to six meters high.

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