Cy:
4:
Patches of semitransparent altocumulus (often in the shape of almonds or fishe:
at one or more levels;
5:
cloud elements continuously changing in aspect.
Semitransparent altocumulus in bands or altocumulus in one more or less contim
ous layer progressively invading the sky, generally thickening as a whole;
the layer may be
Opaque or double with a second sheet.
6:
Altocumulus formed by the spreading out of cumulus.
7:
any one of the following cases:
(a) Altocumulus in two or more layers usually
opaque in places and not progressively invading the sky;
progressively invading the sky;
(b) Opaque layer of altocumulus no:
(c) Altocumulus coexisting with altostratus or nimbostratus
or both.
9:
Altocumulus, generally at several layers in a chaotic sky;
dense cirrus is
usually present.
Gus
i: ' Cirrus in the form of filaments, strands or hooks, not progressively invading
the sky (often called "mares tails").
2:
Dense cirrus in patches or entangled sheaves usually not increasing and possib:
the remains of the upper parts of cumulonimbus;
or cirrus with sproutings in the form of
towers or battlements or having the aspect of cumuliform tufts.
3:
Cirrus, often in the form of an anvil;
either the remains of the upper parts .
cumulonimbus, or parts of distant cumulonimbus, the cumuliform portions of which cannot be =
8:
Cirrostratus not progressively invading the sky, and not completely covering it
9:
Cirrocumulus alone, or cirrocumulus accompanied by cirrus or cirrostratus or b¢
but cirrocumulus is the predominant cirriform cloud.
DD for waves is given to 10°, with the unit O omitted from the entries.
80°.
Thus 08 represe
Directions are correct to plus or minus 10°.
Period of waves is given in seconds and is correct within one second.
Height of waves is given in feet and is correct within 50% (plus or minus).