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  2. Effects of the El Niño–Southern Oscillation in the United ...

    en.wikipedia.org/wiki/Effects_of_the_El_Niño...

    During El Niño, the jet stream is oriented from west to east across the southern portion of the United States, making the region more susceptible to severe weather outbreaks. During La Niña, the jet stream and severe weather are likely to be farther north than normal. [17]

  3. Jet stream - Wikipedia

    en.wikipedia.org/wiki/Jet_stream

    Within North America, the time needed to fly east across the continent can be decreased by about 30 minutes if an airplane can fly with the jet stream. [42] Across the Atlantic Ocean the North Atlantic Tracks service allows airlines and air traffic control to accommodate the jet stream for the benefit for airlines and other users.

  4. Pacific–North American teleconnection pattern - Wikipedia

    en.wikipedia.org/wiki/Pacific–North_American...

    During the negative phase, the jet stream is retracted over East Asia, producing a blocking weather pattern over the North Pacific. [1] [7] Some of the energy that drives the PNA originates from the barotropic instability produced by the jet, potentially exciting Rossby waves. Shifts in the jet stream can induce changes in air pressure ...

  5. Strong jet stream could wreak havoc on Wednesday flights - AOL

    www.aol.com/news/strong-jet-stream-could-wreak...

    According to the FOX Forecast Center, this strong jet stream combined with the expected heavy rain at major eastern U.S. hubs, including New York, Boston, Charlotte and Atlanta may lead to flight ...

  6. What to know about winter storm hitting North America - AOL

    www.aol.com/news/biggest-winter-storm-over...

    Temperatures 12-25F (7-14C) below normal are forecast. Further north, Canadians are also feeling the effects of the polar vortex. Much of Canada has been under extreme weather alerts, with ...

  7. 2014–15 North American winter - Wikipedia

    en.wikipedia.org/wiki/2014–15_North_American...

    The 2014–15 North American winter was frigid and prolifically wintry, especially across the eastern half of North America in the months of January–March, in addition to having the most amount of storms rated on the Regional Snowfall Index (RSI), with 11 such storms being designated. The season began early, with many places in North America ...

  8. A disjointed jet stream has some climate scientists spooked - AOL

    www.aol.com/scorching-heat-canada-wildfires...

    The jet stream, a ribbon of air that encircles the Northern Hemisphere at high altitudes, drives pressure changes that determine weather across North America. The jet stream’s wavy pattern ...

  9. SIGWX - Wikipedia

    en.wikipedia.org/wiki/SIGWX

    The SIGWX charts only show the forecast for the specific hour, however it is common place for parameters such as the JetStream, CAT & CB to be interpreted +/- 3 hours of the chart validity time. . Prognoses are typically prepared for two ranges of heights: SWH - High Level SIGWX (Flight level 250-630) SWM - Medium Level SIGWX (Flight level 100-450)