CSU researchers now predicting extremely active 2020 Atlantic hurricane season

Roy
"Colorado State University hurricane researchers have increased their forecast and now predict an extremely active Atlantic hurricane season in 2020, citing very warm sea surface temperatures and very low wind shear in the tropical Atlantic as primary factors. Tropical Atlantic sea surface temperatures averaged over the past month are at their fourth-highest levels since 1982, trailing only the very active Atlantic hurricane seasons of 2005, 2010 and 2017. Warmer-than-normal sea surface temperatures provide more fuel for tropical cyclone formation and intensification. They are also associated with a more unstable atmosphere as well as moister air, both of which favor organized thunderstorm activity that is necessary for...

NOAA updated 2020 Atlantic Hurricane Season Outlook

Roy

August 6, 2020 - Atmospheric and oceanic conditions are primed to fuel storm development in the Atlantic, leading to what could be an “extremely active” season, according to forecasters with NOAA’s Climate Prediction Center, a division of the National Weather Service. Today, the agency released its annual August update to the Atlantic Hurricane Season Outlook, initially issued in May.


EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2020

Source:Department of Atmospheric Science Colorado State University

Roy
We anticipate that the 2020 Atlantic basin hurricane season will have above-normal activity. Current warm neutral ENSO conditions appear likely to transition to cool neutral ENSO or potentially even weak La Niña conditions by this summer/fall. Sea surface temperatures averaged across the tropical Atlantic are somewhat above normal. Our Atlantic Multi-decadal Oscillation index is below its long-term average; however, most of the tropical Atlantic is warmer than normal. We anticipate an above-average probability for major hurricanes making landfall along the continental United States coastline and in the Caribbean. As is the case with all hurricane seasons, coastal residents are reminded that it only takes one...

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