Why has Heathrows Bovigngdon stack been empty the last 2 weeks?

Question

I usually get Heathrow traffic over my house every 4-5 mins but the last 2 weeks has seen very little if any. I know they come from the northwest stack at Bovingdon before landing at Heathrow. Any one know where they have gone?

Must admit that its been nice and quiet without them though.

Answer 1

Has the wind direction shifted?

Answer 2

The last two weeks has had a bit of an easterly wind, so 09 has been used and the vectors from Bovingdon shifted- it may be back to normal soon though.