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☆ Strong jet stream sees transatlantic aircraft fly at the 'speed of sound'
▼ + stars: | 2023-11-01 | by ( Julia Buckley | ) edition.cnn.com time to read: +5 min

There’s a difference between ground speed and speed in the air (indicated air speed, essentially the speed of the plane in relation to the air around it). The jet stream explainedThe jet stream is a “core of strong winds around five to seven miles above the Earth’s surface, blowing from west to east,” as the UK’s Met Office describes it. Seven miles above the planet’s surface is equivalent to around 37,000 feet – which means that aircraft at cruising altitude slip easily into the jet stream. “This increase in the temperature gradient is amplifying the speed of the jet stream, which is driven by temperature differences. Either way, these planes are saving time and money.”The jet stream is making planes go around 200mph faster than average.

Persons: NASA –, Storm Ciaran, that’s, Sara Tonks, ”, Derek Van Dam, Richard Branson Organizations: CNN, NASA, Concorde, Emirates, American Airlines, Delta, KLM, UK’s Met, Storm, Virgin Atlantic, Boeing, Virgin, British Airways Boeing Locations: Europe, Dallas, Dubai, Newfoundland, JFK, Heathrow, Los Angeles, London, 760mph, Miami, Amsterdam, ”, United States, 801mph, 560mph, 825mph, New York

☆ Critical Florida coral ravaged by summer's marine heat wave
▼ + stars: | 2023-10-08 | by ( Eric Zerkel | Cnn Meteorologist Derek Van Dam | ) edition.cnn.com time to read: +7 min

CNN —This summer’s record-breaking marine heat wave may have been the “nail in the coffin” for an iconic species of coral that serves as a building block of marine life around Florida. They were also the first coral species to gain protected status under the Endangered Species Act, Jennifer Moore, a threatened coral expert for NOAA told CNN. Staghorn coral may have faired slightly better than elkhorn this summer, Williamson said, but still faces similar long term challenges. Scientists fear this summer's ocean heat was the "nail in the coffin" for elkhorn and staghorn species. “We are definitely looking at a major mortality event, we just won’t know the extent of it for a couple more months,” Moore told CNN.

Persons: ”, Liv Williamson, ” Williamson, Jennifer Moore, Moore, Williamson, ” Moore, Liv, ‘, “ Organizations: CNN, University of Miami, NOAA Locations: Florida, Elkhorn, elkhorn, Caribbean, “, Key Largo

☆ These factors are making it hard to combat the deadly Maui wildfires
▼ + stars: | 2023-08-10 | by ( Ray Sanchez | ) edition.cnn.com time to read: +7 min

CNN —The wildfires in Maui spread swiftly and turned deadly, stunning local officials who were quickly overwhelmed. Fueled by a combination of strong winds and dry conditions – and complicated by the island’s geography – the fires have killed at least 36 people. Moderate drought covers more than one-third of Maui, with some areas experiencing severe drought, according to the US Drought Monitor. Dried-out land and vegetation can provide fuel for wildfires, which then can swiftly turn deadly if strong winds help fan the flames toward communities. “These strong winds coupled with low humidity levels are producing dangerous fire weather conditions” through Wednesday afternoon, the weather service said.

Persons: ” Jennifer Marlon, ”, Clay Trauernicht, ” Marlon, Derek Van Dam, Abby Frazier, ” Frazier, Hurricane Dora, Niño, Frazier, Trauernicht, ” Trauernicht, –, we’ve Organizations: CNN, Yale School of, University of Hawaii, US Drought Monitor, Fourth, National Weather Service, Clark University in, El Nino, Pacific Fire Exchange, of Forestry, Wildlife Locations: Maui, Hawaii, Manoa, Santa Ana, Southern California, Oahu, Clark University in Massachusetts, “, Hurricane, Pacific, ” Hawaii, West Maui

☆ Next winter storm brings threat of tornadoes, blizzard conditions and flooding early next week
▼ + stars: | 2022-12-08 | by ( Allison Chinchar | ) edition.cnn.com time to read: +6 min

CNN —Back-to-back-to-back systems will make their way across the United States over the next few days, with the last – and largest – storm bringing heavy rain, blizzard conditions and the potential for tornadoes. Along the coast, heavy rainfall and gusty winds will hammer the area with 1 to 2 inches of rainfall expected through Friday … before the main event arrives. Flash flooding, blizzard conditions and tornadoes possible next weekA blockbuster storm looks to be taking shape in the West for this weekend into early next week, threatening flash flooding, blizzard conditions and tornadoes. “As the system moves into the Plains early next week, a spring-like storm system develops,” Myers said. That threat is also increasing across the southern Plains and Gulf Coast region.

CNN —Multiple avalanche warnings are in place across western Colorado through the next couple of days due to favorable avalanche conditions. Meanwhile, a train of winter storms continues across the West, prompting winter weather advisories. “You can expect to easily trigger a large and dangerous avalanche on steep northerly and easterly-facing slopes at all elevations,” warned the Colorado Avalanche Information Center. It’s very rare to survive an avalanche, according to Jake Hutchinson, an avalanche rescuer and safety instructor in Utah. Wind gusts in western Colorado could be up to 40 mph at times.

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