![]() ![]() Satellites have drastically changed how we forecast and monitor hurricanes. Hurricane season officially extends through November 30. The peak of the Atlantic hurricane season historically occurs in September. NOAA is predicting an active Atlantic hurricane season this year, while a near- to below-normal season is expected in the eastern Pacific. June 1 marked the beginning of the Atlantic hurricane season the eastern Pacific season began on May 15. “That just shows that we still have a lot to learn, and much research remains to be done to fully understand drivers of hurricane activity,” said Louis-Philippe Caron, research scientist at Ouranos and BSC collaborator as well as co-founder of the website.The 2021 hurricane season is officially underway. This suggests that other climate influences besides La Niña played a critical role in determining levels of hurricane activity. October-November 2020 was extremely active, with six hurricanes forming, while no hurricanes formed during October-November 2021. However, what was surprising, is that the period October-November 2021 was vastly different from this same period in 2020. Both years had La Niña, a climate phenomenon characterised by cooler than normal water temperatures in the eastern and central Pacific that typically increases the Atlantic hurricane activity at the end of the season. Its remnants also caused tremendous flooding in portions of the mid-Atlantic states including New York City.Ĭlimate conditions at the end of the 2021 Atlantic hurricane season were similar to those of 2020. Ida tied with the Last Island Hurricane of 1856 and Hurricane Laura of 2020 as the strongest hurricanes to make landfall in Louisiana on record. state of Louisiana on August 29 at category 4 strength. The season's most devastating storm was Hurricane Ida, which made landfall in the U.S. While the hurricane season officially begins on June 1, this year the tropical storm Ana formed on May 22, before the official start of the season. The 2021 Atlantic hurricane season was the 6th year in a row to have above-average activity. Most groups correctly anticipated an above-average season from as early as March/April,” said Phil Klotzbach, research scientist in the Department of Atmospheric Science at Colorado State University and co-founder of the website. “This year was a notable forecast success for almost all groups issuing predictions. This year’s predictions were quite accurate, with the average of all forecasts correctly anticipating the number of major hurricanes (four observed, four predicted), while slightly over-forecasting the total number of hurricanes (seven observed, eight predicted) and under-forecasting the number of storms (21 observed, 18 predicted). ![]() ![]() The platform collects forecasts on upcoming hurricane activity from the end of March to early August. ![]() The project was launched in 2016, aiming to improve the understanding of hurricane variability among the scientific community and the general public. NOAA, UK Met Office), universities (e.g., Colorado State University, NC State University) and private weather companies (e.g., WeatherBELL, WeatherTiger). The Seasonal Hurricane Predictions platform displays data from 27 different entities located worldwide, including meteorological services (e.g. This is the first platform to aggregate forecasts from centers specializing in seasonal Atlantic hurricane forecasting. The above-average hurricane season was anticipated by the Seasonal Hurricane Predictions platform run by the Barcelona Supercomputing Center (BSC) and Colorado State University (CSU), in association with AXA XL, which has recently renewed its support for the project. Among those cyclones, seven became hurricanes, and four further intensified into major hurricanes. The season produced 21 named tropical or subtropical cyclones - the second season in a row in which the Atlantic named storm list that has 21 names was run out. The 2021 Atlantic hurricane season came to an end on November 30 as the third-most active year on record for named storms, trailing only 20. ![]()
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