All right?
That's the front. Put a few isobars there...
There... All right?
And you can see that the blue boat here is ahead of the front, north-northwest.
This is potentially a problem for them.
If they go too fast, or
the low goes too slow, they could end up being just northerly all the time.
At some stage, they have to come back up here.
It would be a lot quicker for them, actually better off...
They're also at a wider angle, and
go through the south, shorter route, faster, all good.
But they have to come back up to the ice gate, so
they have to decide to make a compromise.
Is this low pressure going to overtake us?
Which means, we'll get in the westerly winds behind it,
it will be really easy to come back up north.
Or are we too fast and low pressure to slow, relatively speaking.
And do we have to get to the ice case.
The boat's behind here, they're already behind the front.
They're in the west league at a much more down-wind angle, and
they'll be driving down.
They will drive south, try to find more pressure here, and
then try and come back up north again.
To respect get over here, okay so
you just saw this low pressure, this front, the northerly head of it.
What is this leading boat going to do?
They would like to ride this low pressure and go South.
They can't, they have to go back up to the ice skate.
There's something else here worthwhile paying attention to.
You can see a cyclonic movement over here, like a low pressure forming here.
It's something to keep and eye on, because although,
there is high pressure here and high pressure here.
This bringing in warm and
humid air from India basically, Gulf of Bengal, the tropics.
And this bringing down, generally speaking, cold air from Antarctica.
This will create some low pressures over here, cyclogenesis.
Most come out of the Atlantic, but
some come out of the Madagascar cold front, as well.
This what's going to happen here.
You're going to see a little bit of cyclonic movement here.
A low pressure starting to build and this boat is faced with a big dilemma.