The rapid or slow rise of a squall cloud--its more or less disturbed
look--that is, whether its body is much agitated, and changing form
continually, with broken clouds, or scud, flying about--or whether the
mass of cloud is shapeless and nearly quiet, though floating onwards
across the sky--foretells more or less wind accordingly.
An officer of a watch, with a good eye for clouds and signs of changing
weather, may save his men a great deal of unnecessary exposure, as well
as work, besides economising sails, spars, and rigging.
In some of the "saws" about wind and weather, there is so much truth
that, though trite and simple, their insertion here can do no harm.
Adverting to the barometer:--
When rise begins, after low,
Squalls expect and clear blow.
Or:--_First_ rise, after very low,
Indicates a stronger blow.
Also:--Long foretold, long last:
Short notice, soon past.
To which may be added:--In squalls--
When rain comes before wind,
Halyards, sheets, and braces mind.
And:--When wind comes before rain,
Soon you may make sail again.
* * *
Also, generally speaking:--
When the glass falls low,
Prepare for a blow;
When it rises high,
Let all your kites fly.[28]
* * *
To these short expressions--well known, in practice, to the experienced;
a very concise but sure rule may be added, for avoiding the central or
strongest part of a hurricane, cyclone, typhoon, tornado, or circling
storm.
With your face towards the wind, in North latitude, the centre of the
circling, or rotatory storm, will be square to your right. In South
latitude, square to your left.
The apparent veering of the wind, and the approach or retreat of the
dangerous central circle, depend on your position in the curvilinear
whirl or sweep.
Draw a circle;--mark the direction of the rotation or circulation, by an
arrow with the head towards the left hand (against the movement of a
watch's hands) in North latitude; but towards the right (or with the
hands of a watch) if in South latitude. The direction of the wind, and
the bearing of the centre, show your position in the meteor, for such it
is, though perhaps hundreds of miles in diameter; and the veering of the
wind, or the contrary, and its change in strength, will show how the
meteor is moving bodily--over
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