Tropical Storm Flossie strengthens, hurricane warning issued for Mexico's Pacific coast
Flossie strengthened with maximum sustained winds of 60 mph (95 kph). It was centered about 160 miles (255 kilometers) south-southwest of Zihuatanejo and was moving northwest at 10 mph.
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Associated Press
an hour ago
- Associated Press
It's the time of year for Cape Verde hurricanes, the longest and most powerful storms
They are the hurricanes of legend, the bowling balls that cross the entire Atlantic Ocean, menaced ships of yore and make the long, curved lines on the hurricane charts. Cape Verde storms, named for the group of islands about 450 miles (725 kilometers) off the west coast of Africa, typically form from clusters of thunderstorms that move off the continent and into the Atlantic. With thousands of miles of ocean water above the 80-degree Fahrenheit (27-degree Celsius) temperature needed to fuel hurricanes, Cape Verde storms are some of the most dangerous that threaten North America. About 85% of all major hurricanes — Category 3 and higher — start out there, according to the National Hurricane Center. 'They are the media stars and certainly get a lot of attention because you can track them for a long time,' said Jeff Masters, a meteorologist for Yale Climate Connections. But they also are a rare threat. Less than one out of every 10 of the storms crash into the U.S. The rest either fall apart or are curved out to sea by the north and east steering winds that normally prevail over the Atlantic. Now is the time to turn to the east Conditions need to be just right for Cape Verde storms to form and grow, keeping them mostly confined to August and September. Hurricane Erin is a Cape Verde storm. The National Hurricane Center is watching two more clusters of storms to the east of Erin that could develop into tropical storms. But the atmosphere is too complex to know how strong those storms can be if they develop or whether any of them will threaten the U.S. Forecasters begin to lose confidence in their ability to predict the future of any specific storms more than a week out. It takes at least 10 days for a potential hurricane to cross the Atlantic Ocean. Warn weather and light winds help Cape Verde storms grow Cape Verde storms start over Africa where the hot dry air in the Sahara and the hot humid air over the Gulf of Guinea clash and create clusters of thunderstorms that move off the continent. The warm water is the first ingredient. Hurricanes also thrive with light winds above them that won't blow the thunderstorms away from the center. 'They are the strongest because they have the most time to develop. The other storms can crash into land too early,' Masters said.) Researchers have spent the past several years studying the ocean and atmosphere in the far eastern Atlantic to get a better idea of why some storms form and some don't. In recent years, scientists have realized that dry air and dust from the Sahara in Africa blown into the Atlantic from the east can lessen the high humidity hurricanes need and inhibit their development. The dust can travel all the way across the ocean and settle on cars and windows on the U.S. East Coast. 'They travel about a mile above the surface, the winds are very strong, and the air is dry and hot. That's a trifecta that suppresses hurricane activity,' Jason Dunion, a scientist at the University of Miami's Cooperative Institute for Marine and Atmospheric Studies told the university. 1 or 2 hurricanes a year are Cape Verde storms Some years may not see a Cape Verde storm at all. Some can see as many as four or five. But on average about one or two hurricanes a year are classified as Cape Verde storms, according to the National Hurricane Center. And they aren't the only storms to hit the U.S. The Weather Channel analyzed hurricanes since 1995 and found only nine of the 60 that struck the U.S. were the ones that track all the way across the Atlantic. The storms you remember The list of famous Cape Verde hurricanes has a lot of overlap with the list of the most memorable, powerful and deadliest hurricanes. There is the 1900 Galveston Hurricane that killed about 8,000 people in Texas and the 1928 Okeechobee hurricane that killed 2,500 in Florida. In more recent times, hurricanes Donna in 1960 in Florida, Hugo in 1989 in South Carolina, Andrew in 1992 in Florida, Ivan in Grand Cayman, Alabama and Florida in 2004, Ike in Texas in 2008, Irma in Cuba, Puerto Rico and Florida in 2017 and Florence in North Carolina in 2018 were all Cape Verde storms.
CBS News
3 hours ago
- CBS News
Cool and wet fall and winter weather outlook for Southeast Michigan
One of the biggest questions many are asking ahead of a new school year is what will fall and winter look like in Southeast Michigan? Fall can depend on many factors, but winter is the easy one: cold and probably snowy. Jokes aside, we do have some broad-brushed thoughts on what we're tracking as we approach the coming cooler months. Southeast Michigan is entering a La Niña watch, which means La Niña looks possible going into the winter months. What does this mean for Southeast Michigan? Overall, our patterns are wetter and cooler than our averages when it comes to a La Niña winter. Winters in La Niña characteristically have a higher snow chance as cooler air and wetter conditions up those odds. It really is a game of odds this far out. What is more likely, what can we see now, and what type of pattern fits? However, the numbers also look weak. The colored bars show the likelihood of La Niña (blue), El Niño (red), or an ENSO Neutral (gray), over the course of the coming months. The La Nina pattern is expected sometime in the September through November range, increasing through the mid-winter months, and falling at the end. The odds are also mid-range, which denotes a weak La Niña expectation. Even in weak La Niña years, we have some impacts, for instance, earlier snowfall, but that is far from being set in concrete. You can view the full La Niña and El Niño history month to month here. Daily conditions, larger patterns, and even tropical systems like hurricanes can affect the weather here in Michigan throughout the Fall months. The biggest fall question is the changing leaves, and on that, we can give you a couple of dates plus/minus about a week. With the conditions we've seen and expected ranges based on our slow switch to a weak La Niña, colors in southeast Michigan will likely start to change in earnest around Sept 25. Peak color looks to be close to the final week of October. Now, daily extremes and storms can affect this, so be sure to stay up-to-date with the latest forecast as reports come in. Now for the big one: what are we thinking for the coming winter? As mentioned above, cooler and wetter. Now we're not talking extremes here, but when you add some extra moisture and cooler air, you make snowy days more likely, or at least wintry precipitation. Most of our La Niña winters see average or a little above average snowfall, but that also depends on the strength of the La Niña in question. The bottom line is expect cool air and some snow to make an appearance right on time, with a slightly higher chance at more snowfall during the prime mid-winter months.
Yahoo
3 hours ago
- Yahoo
FORECAST: Tropical Storm Watch issued for Outer Banks; heat builds back into the Charlotte area
ABOVE: The latest forecast update from Severe Weather Center 9. To stay on top of changing weather conditions, be sure to download our free WSOC-TV weather app. FORECAST: We will be watching those clouds breaking up just a bit, allowing for a little more warmth tomorrow. Temperatures are expected to reach at least 90 degrees with a heat index of around 95. Meanwhile, the hurricane is moving up the Atlantic, parallel to the Carolina coastline. While there will be no impacts for the DMA but tropical storm force winds, downpours, erosion, and high surf will be common in the Outer Banks through Wednesday. As a result, a Tropical Storm Watch has been issued for the Outer Banks. >> Channel 9's Weather 24/7 stream has the latest local weather all day, every day. Watch wherever you stream — on our website, or through your mobile app or smart TV. WEATHER RESOURCES: WSOC Weather 24/7 Interactive Radar Download our weather app for Severe Weather Alerts Hour-by-Hour Forecast 7-Day Forecast FOLLOW OUR TEAM ON X: Chief Meteorologist John Ahrens Meteorologist Keith Monday Meteorologist Joe Puma Meteorologist Danielle Miller Solve the daily Crossword
