To: TobagoJack who wrote (179614 ) 10/22/2021 9:09:05 AM From: maceng2 Respond to of 218913 <<And La Nina is expected to bring a brutally cold winter >> "Double Dip" La Nina. But the "la Nina" effect in China is possibly different. You will see lower temperatures? What Is A Double-Dip La Niña And How Will It Affect Your Winter? (forbes.com) The National Oceanic and Atmospheric Administration (NOAA) recently declared that La Niña has re-developed. La Niña is part of a larger cycle called the El Niño Southern Oscillation ( ENSO ). By now you are likely familiar with El Niño and La Niña. However, the term “double-dip La Niña” may not be household terminology. Here is an explanation of what it means as well as a look at how it could affect winter in the United States. NOAA According to NOAA’s press release , “La Niña is a natural ocean-atmospheric phenomenon marked by cooler-than-average sea surface temperatures across the central and eastern Pacific Ocean near the equator and is translated from Spanish as little girl.” Its warm climatological brother is El Niño, which is characterized by warmer-than-average sea surface temperatures. Both phases of the cycle can modify weather patterns, including Atlantic season hurricanes, around the world through teleconnection patterns . According to a NASA Fact Sheet website , the following conditions are typically associated with La Niña in the United States: Below normal precipitation - central to southern Rockies, Great Plains, Florida, and the Southwest (first three months).Above normal precipitation - Pacific Northwest, upper Southeast, northern Intermountain West, and parts of the Ohio Valley/north-central states.Cooler than normal temperatures - Pacific Northwest, north-central states, and the northern Intermountain west.Warmer than normal temperatures - Great Plains, southern Rockies, the Ohio Valley, mid-Atlantic, and the Southeast. A man walks holding an umbrella under the rain in Cali, Colombia, on March 11, 2021. - The Ideam ... [+] AFP VIA GETTY IMAGESThe above-average 2021 hurricane season is likely tied to La Niña conditions which, according to NOAA, developed in August (2020) and weakened by April (2021). I should caution the reader that such conditions are based on climatological analyses of previous La Nina conditions but can vary in any particular cycle. NOAA’s press release notes, “Consecutive La Niña following a transition through ENSO neutral conditions are not uncommon and can be referred to as a “double-dip.” The current La Niña will likely extend into the spring of 2022. Seasonal outlooks for the fall and early winter season (graphics below) have been issued by the Climate Prediction Center and the influence of La Niña is clearly evident (and I am loving the projected warmer than normal conditions here in the Southeast). Let’ see what happens. Seasonal temperature outlook for October to December (2021) NOAA CPC Seasonal precipitation outlook for October to December 2021 NOAA CPC Marshall Shepherd Dr. J. Marshall Shepherd, a leading international expert in weather and climate, was the 2013 President of American Meteorological Society (AMS) and is Director of the University of Georgia’s (UGA) Atmospheric Sciences Program. Dr. Shepherd is the Georgia Athletic Association Distinguished Professor and hosts The Weather Channel’s Weather Geeks Podcast, which can be found at all podcast outlets. Prior to UGA, Dr. Shepherd spent 12 years as a Research Meteorologist at NASA-Goddard Space Flight Center and was Deputy Project Scientist for the Global Precipitation Measurement (GPM) mission. In 2004, he was honored at the White House with a prestigious PECASE award. He also has received major honors from the American Meteorological Society, American Association of Geographers, and the Captain Planet Foundation. Shepherd is frequently sought as an expert on weather and climate by major media outlets, the White House, and Congress. He has over 80 peer-reviewed scholarly publications and numerous editorials. Dr. Shepherd received his B.S., M.S. and PhD in physical meteorology from Florida State University.