There's a 0.000000000000000000000000000001% chance of a meteor hitting the threshold during your flare as well, that should be on every forecast from now on. But that's not having a go at you derfred, 10 or 20 percent probably should be included , but it still won't stop us forecast fog events. The main thing was that this Mildura event happened to GPS equipped aircraft, if it happened years ago pre GPS it could have been a precautionary search and landing event in a 737/727/DC9 Yikes!