If we were required to go-around every time ATC reported "windshear advisory" or "windshear alert" the number of go-arounds, at least in the U.S., would sky rocket. In this example the visibility was 6-10 miles with 3700' SCT or BKN clouds. Think about how often you have that in Florida on summer afternoons. Let's see what the FDR shows as far as weather and pilot performance.