Snow squalls are intense, but limited duration, periods of moderate to heavy snowfall, accompanied by strong, gusty surface winds and possibly lightning (generally moderate to heavy snow showers) Snow accumulation may be significant
A squall comprises a rather sudden increase of the mean wind speed which lasts for several minutes at least before the mean wind returns to near its previous value A squall may include many gusts To top
A sudden onset of strong winds with speeds increasing to at least 16 knots (18 miles per hour) and sustained at 22 or more knots (25 miles per hour) for at least one minute The intensity and duration is longer than that of a gust It is reported as "SQ"s in an observation and on the METAR
If a person or animal squalls, they make a loud unpleasant noise like the noise made by a crying baby. There was an infant squalling in the back of the church. squalling guitars. = wail. a sudden strong wind, especially one that brings rain or snow (Probably from a language). if a baby or child squalls, it cries noisily = bawl
sudden violent winds; often accompanied by precipitation make high-pitched, whiney noises blow in a squall; "When it squalls, a prudent sailor reefs his sails