On 2013-10-03 21:15:20 +0000, Jim Cannon said:

Will OWNS this term. No-one else!!! God I miss him

No he doesn't, and no you don't.

It has been an aviation meteorology term since well before the Deity
that is Will was in nappies, and refers to different effects in
different parts of the UK.

And anyway, "suckers' gap" is tame by local tv standards. Our local
weather presenter casually mentioned that the weather was a dichotomy,
the other day.