BB1832 : The
Cross Wind Rule
Thursday
27th September 2018
I
learnt something new this week. I was glancing
through a Mountaincraft book that I had
found and there it was:
The
Cross Wind Rule
We
used it today.
We
were not expecting good weather. The
mountain forecast was for fog and 20% chance
of rain. The international definition
of fog is visibility of less than 1000 metres
but the Met Office uses the term for much
more restricted visibility- less than 180
metres. Also, winds were expected to
gust up to 50 mph.
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We
had a plan with three options (Tony would say four).
First
option point was at the miners’ cottages (now walking
club houses) where Lucy’s Tongue reaches down to Glenridding
Beck. If the predicted fog could be seen, we could
traverse round to Grisedale for a low level walk. To
our surprise, the sun was bright and clouds were disappearing. It was quite windy though.
We rejected that option and continued on our way
up the valley, Catstye Cam in full view, then turned left, climbing towards Red
Tarn.
The
next option point was after Striding Edge had dramatically
come into view on the other side of Red Tarn. The
sun was shining onto its hidden side so those crazy
souls braving the winds were silhouetted on the skyline.
However, our target was not Striding Edge, nor
Swirral Edge; in fact little to do with Helvellyn. We
were intent on climbing Catstye Cam. Were it not
for its ridge link to Helvellyn, this would rank as
one of the best high hills in Lakeland in its own right.
But would
it be in cloud? Had visibility been bad, we would
have aborted and headed straight for Birkhouse Moor.
To our continuing delight, it was in sunshine,
though that wind was still blowing strongly. The
third and preferred option, the ascent of Catstye Cam,
was go.
We
contemplated a direct route but decided instead for
the much gentler path to the bottom of Swirral Edge
from where it is an easy climb to the Catstye Cam summit.
Another tick in the Wainwright book for Terry
and me. What a view point.
We
had promised Tony lunch as soon as he liked once we
were back on the Red Tarn track. Inevitably, as soon
as we reached it, he sat down. After all, it was
now 12:30. We stayed there for half an hour but
then suspected that things might be changing. I
remembered the Cross Wind Rule. I stood with my
back to the wind then looked up at the clouds. If
they are coming from your left, pressure is dropping.
There is a cyclone and rain could be on its way.
If the upper winds are coming from the right,
it is anti-cyclonic and the weather probably improving.
It
was cyclonic. Rain was on its way and we had better
get moving. We dropped down to Red Tarn then followed
the path to the Hole-in-the-Wall, looking back frequently
to see Helvellyn starting to disappear. The cloud
was forming and dropping.
Fortunately
the rain hadn’t reached us by the time we reached the
Birkhouse Moor cairn, another tick and another fine
viewpoint.
However as we descended towards the
valley, Catstye Cam had now vanished in cloud and the
air was very damp.
Our
next objective was Lanty’s Tarn. Somewhat to my
surprise, I have never been there before.
It is
a delight. Holly, Robin’s dog, certainly thought
so.
At
the far end of the tarn is a permissive footpath to
climb Keldas- a small outcrop with a good view of Ullswater.
We then dropped back down to Glenridding where flood
repair work is still taking place, more than two and
a half years after the event.
Now
the Tony option came into play. Which pub?
The
Kirkstone Inn won the vote and this is where Tony applied
his version of the Cross Wind Rule. He enters
and stands with his back to the door. If the beer
pumps are on his right, a mysterious wind blows him
directly to them. This rule also works if they are on
the left. Or straight ahead. It even works
when he stands up from his seat.
I
asked Tony how it was that he was able to apply the
Cross Wind Rule with such unerring effect. "Easy"
he replied. "Wind is caused by changes in
atmospheric pressure. Atmospheric pressure is
measured in units equivalent to a hundred thousand newtons per square metre. These
units are called Bars. Bars are my life-long speciality.
Simples."
Another
beer, please, Tony!
Don,
Thursday 27th September 2018
Martin's
Comeback
We
are pleased to report that Martin is making great progress
after his hip op and hopes to be back out with us soon.
To prove it, Mike took this photo of Martin with
Terry at Arnside.
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