Actually I was doubtful the dead was partially caused by the WCH as he/she finished the FM at 0715 hour from what I read in FB which was still very early and the sun still not really up yet
Got a bit of spare time, go digged a bit.
0715hr ah.... then for this particular case, the contributing factor is most probably not due to the heat stress triggering the main medical issue, unless if the fella is not terribly heat adapted (eg AC gym treadmill running or overseas pax), yesterday at 5am + still 29 deg C heat index temp when i checked before we went out to cycle, 7am should still be 30 deg C heat index max.... Not really the cooling type like last week, but still not really warm. But once the sun comes out as the cloud cover breaks as shown in the Prischew video, it'd spike up
From the data below, seems like after 0915h then the clouds broke. Then also have to factor in the skin/body absorption of IR radiation from direct sunlight, in addition to the rising heat index temperature.
But of coz for others (FM) if kena WCH after 9am and needed medical attention as not feeling well / dizzy / migraine, see stars light headed or throbbing bp up in the head (HBP?) etc, then it's likely heat related liao.
0715h