The Atlantic hurricane season is the period in a year from June through November when tropical cyclones form in the Atlantic Ocean, referred to in North American countries as hurricanes, tropical storms, or tropical depressions. Green tracks did not make landfall in US yellow tracks made landfall but were not major hurricanes at the time red tracks made landfall and were major hurricanes.
The 2021 hurricane season will officially begin on June 1 and NOAA’s Climate Prediction Center will issue its initial seasonal outlook in May.Hurricane tracks from 1980 through 2014. Stay vigilant and make sure your family is Weather-Ready. 30, but it is still possible for additional storms to develop. Air Force Reserve Hurricane Hunters to provide invaluable data during this record-setting season. This vital oceanic data allowed forecasters to help mariners avoid dangerous situations at sea.Īdditionally, three hurricanes - Isaias, Laura, and Sally - passed within range of NOAA’s hurricane ocean gliders this year, capturing invaluable ocean data below the storms while hurricane hunter planes captured atmospheric data above.Ĭapturing atmospheric data this season was no small feat, as forecasters and researchers relied on the heroic efforts of NOAA and U.S. Scientists at NOAA’s Atlantic Oceanographic and Meteorological Laboratory and the Satellite and Information Service were able to get wave height information into the hands of forecasters using new instrumentation like the Ka-band Interferometric Altimeter. NOAA’s National Ocean Service stations recorded this data using the Coastal Inundation Dashboard, a tool to observe real-time water levels during a storm. This historic hurricane season saw record water levels in several locations, including the Gulf Coast where Hurricane Sally brought the highest observed water levels since Hurricane Katrina in 2005. These conditions, combined with La Nina, helped make this record-breaking, extremely active hurricane season possible,” said Gerry Bell, Ph.D, lead seasonal hurricane forecaster at NOAA’s Climate Prediction Center. These included warmer-than-average Atlantic sea surface temperatures and a stronger west African monsoon, along with much weaker vertical wind shear and wind patterns coming off of Africa that were more favorable for storm development. “As we correctly predicted, an interrelated set of atmospheric and oceanic conditions linked to the warm AMO were again present this year. An average season has 12 named storms, six hurricanes, and three major hurricanes. Such active eras for Atlantic hurricanes have historically lasted about 25 to 40 years. This increased hurricane activity is attributed to the warm phase of the Atlantic Multi-Decadal Oscillation (AMO) - which began in 1995 - and has favored more, stronger, and longer-lasting storms since that time. This is the fifth consecutive year with an above-normal Atlantic hurricane season, with 18 above-normal seasons out of the past 26.
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“The services provided by NOAA, alongside our emergency management partners, undoubtedly helped save many lives and protect property.”Īnimated satellite imagery of the named storms that occurred during the 2020 Atlantic Hurricane Season (May 13 through November 18). “Throughout this relentless hurricane season, NOAA worked around-the-clock to provide critical data and reliable forecasts to our Nation’s communities in the path of devastating storms,” said U.S. This is the most storms on record, surpassing the 28 from 2005, and the second-highest number of hurricanes on record. In total, the 2020 season produced 30 named storms (top winds of 39 mph or greater), of which 14 became hurricanes (top winds of 74 mph or greater), including seven major hurricanes (top winds of 111 mph or greater). NOAA’s seasonal hurricane outlooks accurately predicted a high likelihood of an above-normal season with a strong possibility of it being extremely active. While the official hurricane season concludes on November 30, tropical storms may continue to develop past that day. The extremely active 2020 Atlantic hurricane season is drawing to a close with a record-breaking 30 named storms and 11 landfalling storms in the continental United States.
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