Jan 19, 2026 · La Nina is forecast to turn into El Nino during the second half of 2026, which may have implications for agriculture, hurricanes, and eventually next year's winter season.

Nov 25, 2025 · The same sort of pattern is forecast for January. But this time, we may have some influence from the polar vortex, a characterization of the jet stream that circumnavigates the North Pole.

Nov 21, 2024 · The polar jet stream typically lingers farther north in Canada during the summer months, while the subtropical jet stream hovers across the southern half of the U.S.

Sep 11, 2025 · During a La Nina winter, an area of high pressure will typically dominate the northeast Pacific, and this can cause the polar jet stream to dip farther south over the central U.S.

Jan 19, 2024 · The polar vortex describes the jet stream that circumnavigates the polar region. When it is displaced from its normal position, very cold air from the Arctic can be pushed southward into the …

Jan 6, 2024 · The cold will expand south and east from there into the U.S. during the following couple of days as the southern jet stream causes a few storm systems to move through the Pacific Northwest …

Apr 11, 2023 · The main effect, especially in the wintertime, is to split the jet stream near the U.S. and make the southern stream of it -- the subtropical jet stream -- stronger and more active than the ...

Dec 23, 2024 · It takes time and is still yet to be technically a La Nina, but the cooler waters are starting to make an impact, and setting up a response for a changing jet stream in the Northern Hemisphere.

Sep 16, 2025 · The jet stream can generally be thought of as the storm track. It is where the majority of storm systems originate, and the movement of the jet stream can give you the basic idea on where …

Feb 3, 2026 · www.dtnpf.com