• MODIS Pic of the Day 23 November 2022

    From Dan Richter@1:317/3 to All on Wed Nov 23 11:00:44 2022
    November 23, 2022 - Heavy Lake-Effect Snow in Western New York

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    In mid-November 2022, frigid air swept across Lake Erie and Lake
    Ontario, triggering a long-duration lake effect snow event that dropped
    record snowfall in parts of western New York. The first snowflakes fell
    on November 16, with formation of high-intensity bands of snow
    following soon after.

    On November 19, the Buffalo Airport reported a record snowfall of 17.2
    inches for that date—handily beating the previous record of 7.6 inches
    which fell on the same date in 2014. By that time, Orchard Park, south
    of Buffalo, was shivering under a monumental 77 inches of fresh snow.
    The snow came with a price, snarling traffic and dropping visibility to
    less than a half-mile at times. Media reported at least two deaths due
    to the storm and more than 200 people requiring emergency service
    response or rescue.

    On November 21, as falling flakes began to disappear and the skies to
    clear, the National Weather Service tabulated totals for the storm
    while residents living in the heaviest bands continued to dig out. The
    town of Hamburg, just south of Buffalo, won the prize for the deepest
    snow, measuring-in at 81 inches. Nearby Orchard Park was next in line,
    with a storm total of 80 inches. Meanwhile, Tonawanda, a northern
    suburb of Buffalo, registered a relatively-sparse 12.1 inches. Such
    wide differences in snow accumulation are common in lake-effect snow,
    due to the formation of snow bands that can be relatively narrow.

    The Moderate Resolution Imaging Spectroradiometer (MODIS) on board
    NASA’s Terra satellite acquired a true-color image of the aftermath of
    the snowstorm on November 21 as skies began to clear. Clouds remain
    heavy in the west and over Lake Ontario while sediment swirls in Lake
    Erie. Snow accumulation is heaviest in a ring around Lake Erie,
    especially in the northeast.

    Lake-effect snow occurs along the eastern edge of the Great Lakes when
    icy wind blows across the lakes from Canada. The wind picks up
    relatively warm, moist air over the lakes and pushes it over land,
    where the air is cooler. When the moist air encounters cooler
    temperatures over land, the water condenses into precipitation, which
    in cold temperatures falls as snow.

    Image Facts
    Satellite: Terra
    Date Acquired: 11/21/2022
    Resolutions: 1km (214.2 KB), 500m (571.6 KB), 250m (386.5
    KB)
    Bands Used: 1,4,3
    Image Credit: MODIS Land Rapid Response Team, NASA GSFC



    https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-11-23

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