On Jul 30, 8:14 pm, Weatherlawyer wrote:

If you want to know where a double headed Low comes from, take a look
at this baby. A little slip of a Low sneaked up along the west coast
of Britain via France: http://www.cuckney.pwp.blueyonder.co...r/Dorridge.htm

What WILL make it interesting is watching to see if it will pass
straight through the singularity as though they were both a couple of
ocean waves.

Which now I come to think of it, they are.

Yup!

It is a wave passing through. Just as I thought.

Troughs are probably caused by Lows that pass in the night. To coin an
aphorism. What on earth did I mean probably? I am certain of it.

And Ridges are antyclones that do much the same thing.

When Lows and Highs collide -which isn't as often as one might expect,
they tend to cancel each other out for much the same reason that like
adds to like.

And the rotations produces either increased wind speeds or
precipitation. Or do they?

I don't know that anticyclones have much in the way of wind speeds to
increase. But they cover a vast area instead. Perhaps that is the key
to their extensions?

Well it is something to think about when the surge troopers are not
shooting your kids.