Logging Approach Question

"Gerald Sylvester" wrote in message
m...

Tonight I was flying back to SQL GPS 30. There was a dense, 100' thick
ceiling covering half the airport at 800' AGL/MSL.

What was the ASOS reporting? Even if only 1% of the airport is covered
by that cloud if it's over the sensor it becomes your official weather.



Note: my passenger picked out a plane probably at about 600' flying
from PAO to SQL while I was on final. I called out on CTAF (tower
was closed) and didn't hear anything. I wouldn't be surprised
they kept hush knowing they were breaking the regulations. I
had not cancelled IFR and was on the approach and ended up doing
a 360 and climbing. I contacted approach immediately telling him
what I was doing but it could have caused a go around for a heavy
if there was an inbound a/c going into SFO. Fortunately
no one was around. Fortunately my passenger saw the traffic
as they were below me, I was in a low wing, night, with clouds
around and I wasn't expecting him.

So why go around? Couldn't you follow him and land behind him?