Tag: tropical storms

Will global warming super-charge hurricanes?

Hurricane Isaac satellite image
Tropical storm Isaac churning in the Gulf of Mexico in 2012. Photo courtesy NOAA.

New study suggests tropical storms will become more intense

Staff Report

Tropical storms may become less frequent as the planet warms up, but those that do form could be increasingly powerful, according to a new study published in the journal Science last week.

How global warming will affect tropical storm formation in the decades ahead has been the subject of intensive research. The new study says that, so far, the warming effects of greenhouse gases on tropical cyclones have been hard to discern because of natural variability and also because air pollution has been masking the impacts. Continue reading “Will global warming super-charge hurricanes?”

Climate: Record-warm oceans generate yet another record-breaking tropical storm in the Indian Ocean

El Niño, climate change brewing up trouble

Cyclone Fantala
Cyclone Fantala is the strongest tropical storm on record in the Indian Ocean. Photo courtesy NASA.

Staff Report

A tropical storm spinning near Madagascar in the Indian Ocean is yet another sign that global warming is driving the world’s climate into untested realms.

Cyclone Fantala is generating 170-mph winds, making it the strongest tropical storm on record for the region, according to NASA. Just a couple of months ago, Cyclone Winston hit Fiji as the strongest storm in the Southwest Pacific, and last October, Patricia became the most potent hurricane on record in the northeast Pacific, with winds up to 215 mph. Patricia also became the strongest-ever Pacific hurricane to make landfall. Continue reading “Climate: Record-warm oceans generate yet another record-breaking tropical storm in the Indian Ocean”

Tree-rings and shipwrecks offer clues on link between climate change and regional hurricane patterns

A NASA visualization of Hurricane Floyd approaching the Florida coast.
A NASA visualization of Hurricane Floyd approaching the Florida coast.

Study shows lull in tropical storms during cool era

Staff Report

Climate scientists and meteorologists have long been trying to determine how global warming will affect hurricanes, but with so many variables in play, it hasn’t been easy to make definitive conclusions.

A new analysis of tree rings and shipwreck records has now helped created a more detailed look at historic hurricane activity in the time before scientists were able to accurately count the tropical systems. The findings show there was a big drop in hurricanes between 1645 and 1715, during an era of reduced sunspot activity and generally cool temperatures in the northern hemisphere.

Learning that a lull in Caribbean hurricanes corresponded to a time when Earth received less solar energy will help researchers better understand the influence of large changes in radiation, including that from greenhouse gas emissions, on hurricane activity. Continue reading “Tree-rings and shipwrecks offer clues on link between climate change and regional hurricane patterns”

Climate: Warm oceans gone haywire?

Powerful storms in Atlantic and Pacific

MODIS visible satellite image of Hurricane Pali taken at 5:30 pm EST January 11, 2016. At the time, Pali was intensifying into a Category 1 storm with 85 mph winds. Image credit: NASA.
MODIS visible satellite image of Hurricane Pali taken at 5:30 pm EST January 11, 2016. At the time, Pali was intensifying into a Category 1 storm with 85 mph winds. Image credit: NASA.

Staff Report

With large parts of the the world’s oceans consistently warming to record-warm levels the past few months, it’s probably not a surprise that there are some big storms spinning out at sea. Basic physics tells us that warmth is energy, and that’s now translating into some unusual developments, including what may be the earliest-ever hurricane in the central Pacific, according to this Twitter post from National Hurricane meteorologist Eric Blake.

Currently, yet another strong storm is developing in the Pacific. The National Weather Service says the system will also generate hurricane-force winds and waves up to 50 feet.

The Atlantic Ocean has also been hyperactive in recent weeks. A storm centered near Iceland developed hurricane-strength winds during the last days of 2015 and sent a surge of air so moist and so warm northward that temps briefly climbed above freezing at the North Pole during the heart of the coldest time of the year.

Another system in the central Atlantic has a 40 percent chance of subtropical or tropical formation in the next 48 hours, according to the National Weather Service.

 

 

Climate change and Hurricane Katrina: what have we learned

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Hurricane Katrina was sprawled across all or part of 16 states at 2:15 p.m. CDT on August 29, 2005, when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this image. Photo courtesy NASA Earth Observatory.

How will climate change affect hurricanes?

Kerry Emanuel, Massachusetts Institute of Technology

*This story is reprinted with permission from The Conversation

Three weeks and three days before Hurricane Katrina devastated New Orleans 10 years ago, a paper of mine appeared in the scientific journal Nature showing that North Atlantic hurricane power was strongly correlated with the temperature of the tropical Atlantic during hurricane season, and that both had been increasing rapidly over the previous 30 years or so. It attributed these increases to a combination of natural climate oscillations and to global warming. Continue reading “Climate change and Hurricane Katrina: what have we learned”

Climate: NOAA updates 2015 hurricane outlook

A NASA visualization of Hurricane Floyd approaching the Florida coast.
Will there be a major hurricane in 2015?

Increased odds of below-average season enhanced by strengthening El Niño and cool Atlantic sea surface temps

Staff Report

FRISCO — A strengthening El Niño and cooler than average sea surface temperatures across parts of the Atlantic Ocean may further dampen hurricane activity this summer, federal weather experts said this week in the updated 2015 Atlantic Hurricane Season Outlook.

According to the National Hurricane Center, says there’s a 90 percent chance of a below-average season — but that doesn’t mean coastal residents should let their guard down.

“Tropical storms and hurricanes can and do strike the United States, even in below-normal seasons and during El Niño events,” said Gerry Bell, Ph.D., lead seasonal hurricane forecaster with NOAA’s Climate Prediction Center. “Regardless of our call for below-normal storm activity, people along the Atlantic and Gulf coasts should remain prepared and vigilant, especially now that the peak months of the hurricane season have started.” Continue reading “Climate: NOAA updates 2015 hurricane outlook”

Hurricane Carlos raking the Mexican Riviera

Strengthening El Niño fueling tropical storms in eastern Pacific

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A NOAA satellite image shows Hurricane Carlos strengthening off southern Mexico.
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Hurricane Carlos is moving slowly northwestward along the southern Coast of Mexico. Via National Hurricane Center.

Staff Report

FRISCO — Taking a track parallel to the southern coast of Mexico, Hurricane Carlos has spurred warnings and watches along a long section of shoreline. Parts of southern Mexico could get pummeled by high winds, rain and surf the next few days, although the National Hurricane Center says the the storm’s path is still uncertain.

For now, a hurricane warming is in effect from Punta San Telmo to Tecpan de Galeana, with a hurricane watch extending west from Punta san Telmo to Manzanillo. Carlos is generating winds of about 80 mph and could strengthen in the next couple of days, with winds of up to 90 mph as it nears the coast. Continue reading “Hurricane Carlos raking the Mexican Riviera”