Bad CB in the Area at the time.........News reporting 20 years to the day, Delta L-1011 crashed at KDFW due to Microburst from CB.
In listening to the ATC Archive for CYYZ from 1530 to 1600 hours, Weather was of concern, but ATC was reporting weather 7 to 12 miles north of the field.
http://www.liveatc.ne
click on archive,
click on CYYZ,
select 1530 to 1600,
click submit.
Of interest, a comair RJ is asking about weather they have on their Radar right over the field, not once, but twice. She is questioning the weather over the field several times as looking very heavy. Time frame around 1540 hrs.