Posted on June 14, 2015 by Bob Berwyn
Strengthening El Niño fueling tropical storms in eastern Pacific
A NOAA satellite image shows Hurricane Carlos strengthening off southern Mexico.
Hurricane Carlos is moving slowly northwestward along the southern Coast of Mexico. Via National Hurricane Center.
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
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Posted on June 2, 2015 by Bob Berwyn
Early tropical systems churning off the coast of Mexico
FRISCO — The eastern Pacific has already brewed up two tropical systems, with Hurricane Andres churning well off the coast and headed out to sea, and Tropical Storm Blanca, expected to reach hurricane force June 2.
Neither storm is a threat to Mexico, though the National Hurricane Center says some of Blanca’s outer rain bands could brush the coast. Continue reading
Filed under: climate and weather, extreme weather, tropical storms and hurricanes | Tagged: 2015 hurricane season, Colorado weather, eastern pacific hurricanes, Hurricane Andres, Tropical Storm Blanca, tropical storms | Leave a comment »
Posted on March 12, 2015 by Bob Berwyn
A NASA visualization of Hurricane Floyd approaching the Florida coast in 1999. Hurricane Floyd formed from a tropical wave moving off the coast of Africa to become one of the largest and strongest Atlantic Hurricanes on record.
Spatial cloud coverage offers clues to tropical storm formation
FRISCO — Closely monitoring thunderstorms over Africa may help meteorologists develop better forecasts for Atlantic hurricane development.
“Eighty-five percent of the most intense hurricanes affecting the U.S. and Canada start off as disturbances in the atmosphere over Western Africa,” said Tel Aviv University Prof. Colin Price, who recently published a new study on hurricane formation in Geophysical Research Letters. “We found that the larger the area covered by the disturbances, the higher the chance they would develop into hurricanes only one to two weeks later.”
Working with graduate student Naama Reicher of the Department of Geosciences at TAU’s Faculty of Exact Science, Price analyzed satellite images of cloud cover to track the variability in cloud cover blocking the earth’s surface in West Africa during hurricane season.Using infrared cloud-top temperature data gathered from satellites, Prof. Price assessed the temperatures of the cloud tops, which grow colder the higher they rise. He then compared his cloud data with hurricane statistics — intensity, date of generation, location, and maximum winds — from the same period using the National Hurricane Center data base. Continue reading
Filed under: climate and weather, extreme weather, tropical storms and hurricanes | Tagged: Atlantic hurricanes, Cape Verde hurricanes, climate, extreme weather, hurricane forecasting, hurricane formation, tropical storms | Leave a comment »
Posted on September 14, 2014 by Bob Berwyn
Hurricane watches issued; major storm impacts expected
FRISCO — Much of the southern tip of the Baja Peninsula could see high winds, coastal flooding and mudslides as Hurricane Odile takes aim at the area, packing sustained winds of up to 135 mph.
The approaching tropical storm has prompted hurricane warnings and evacuations in Baja, where the storm surge could peak at 33 feet above normal sea level, according to the Servicio Meteorológico Nacional, which is also warning of tropical storm conditions along parts of Mexico’s mainland Pacific coast. Continue reading
Filed under: climate and weather, tropical storms and hurricanes | Tagged: 2014 hurricane season, Baja California, Hurricane Odile, hurricane watch, tropical storms | 1 Comment »
Posted on September 6, 2014 by Bob Berwyn
Big surge of subtropical moisture possible early next week
Moisture will be plentiful across Colorado and much of the U.S. the next 5 days.
FRISCO — Hurricane Norbert, now spinning off the coast of Baja, California, could deliver copious amounts of moisture to Colorado early next, according to the National Weather Service, which is already talking about the potential for regional flash flooding.
The Category 3 storm is expected to weaken gradually during the next few days as it moves northwest over cooler water, but the projected path turns the remnant low pressure system eastward, coming ashore over northern Mexico or southern California late in the weekend.
The exact path will determine how much rain falls in Colorado, but National Weather Service forecast maps are showing widespread rain across Colorado, with a bullseye over the north-central mountains.
Grand Junction-based National Weather Service forecasters say subtropical moisture will increase across the Great Basin and western Colorado Monday as a low pressure area off the SoCal coast directs Nortbert’s remnants and more monsoon moisture northeastward.
Storms will be widespread by Monday afternoon with the potential for heavy rain and small hail, as well as a chance for flash floods and debris flows.
Dry air (brown) prevailed over Colorado Saturday morning, but Hurricane Norbert may help boost another surge of late-season monsoon moisture poised to the south.
Filed under: climate and weather, Colorado, Summit County Colorado, tropical storms and hurricanes | Tagged: Colorado, Hurricane Norbert, Southwest monsoon, weather | Leave a comment »
Posted on May 28, 2014 by Bob Berwyn
Coral reef are gardens of biodiversity and also provide valuable services for coastal populations.
Research quantifies benefits of reef conservation
FRISCO — Coral reefs have long been recognized as important cradles of ocean biodiversity, but they also help protect coastal populations from the brunt of storms. A new study claims that reefs reduce wave energy that would otherwise impact coastlines by 97 percent.
“Coral reefs serve as an effective first line of defense to incoming waves, storms and rising seas,” said Dr. Michael Beck, lead marine scientist with The Nature Conservancy and a co-author of the study, “200 million people across more than 80 nations are at risk if coral reefs are not protected and restored.” Continue reading
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Posted on May 15, 2014 by Bob Berwyn
Tropical cyclones appear to be migrating north.
Study finds that point of maximum intensity has moved poleward by 35 miles per decade
FRISCO — Tropical storm trackers say that the location where cyclones reach their maximum intensity is shifting north by about 35 miles each decade. The changes could put more coastal infrastructure at risk, while other areas that rely on tropical storms for water could be left high and dry, researchers said.
The amount of poleward migration varies by region. The greatest migration is found in the northern and southern Pacific and South Indian Oceans, but there is no evidence that the peak intensity of Atlantic hurricanes has migrated poleward in the past 30 years. Continue reading
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