I'm guessing this was on too early in the day to set a new record for the hottest orienteering event on record in Australia? (for those who missed it, it was 43 degrees today in the part of Sydney where this was run, and 47 in the western suburbs).
Terrey Hills (4km to the E) was 38.7C for the last start at 11 rising to 40.2C when we finished at noon.
Ouch. Highest temperature I know of for an event in Australia is 42.0 (at start time) for a Melbourne Summer Series event during the pre-Black Saturday heatwave, but I'm not sure if there's been hotter in Adelaide or Perth?
There are likely to have been a few Perth summer series starts hotter than yesterday, but without the humidity, and with the prospect of a cooling sea breeze on the way. The problem yesterday was that the day was only getting worse at that stage :)
And from the highly accurate car thermometer, there was only minor variations from West Pymble along M2, M7 and M5 through past Picton.
I recall an event at Canning River RP many years ago (maybe Jan or Feb 2008, before my log started and also before we recorded results in the OA result database for Metro) that was easily >40 degrees at the start of the event although I don't recall the exact temperature. It was also inland so the sea breeze was non-existent.
No chance of breaking heat records these days with our new policy canceling any event that looks like getting up near that temperature.