Given the recent 737-8 incident, there are many responses regarding a microburst potential. The following is provided as information, and should certainly clear up the understanding of microburst mechanics....
Wet Microburst (AUS BoM)
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Dry Microburst (AUS BoM)
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FAA understanding of Microburst
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University understanding of Microburst (UW Atmospheric Sciences)
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US Airforce understanding of Microburst
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NOAA understanding of Microburst