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Snow with positive and wet bulb temperatures

  • 26-03-2021 12:42pm
    #1
    Banned (with Prison Access) Posts: 2,254 ✭✭✭


    As many you know it’s been snowing in the W and NW at times this morning. What’s odd is the conditions, temps are around 1-3c during the showers which is usually fine for snow.

    However, the dew point where I am is 0.5-1c and wet bulb is 1-2c.

    At times I have heavy big fluffy flakes, so not just graupel. This is very odd as usually the parameters for snow absolutely require a negative wet bulb.

    I have in the past had rain with temps of 1-1.5c, even lower due to a positive dew point and wet bulb.

    So what has caused this oddity today? How are the snowflakes getting down to sea level without melting?

    https://streamable.com/q3lxup
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