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Written by John Olzsewski
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What happened
From bordering on the very warm in the
north to warm in the central parts, by daytime, the week has brought a pleasant
face to the winter. The pressure patterns have been ripe for east wind
conditions in the central Namib. These days have happened, but with a
moderation not normally associated with “east-wind” weather. The Gobabeb
personnel remain happy with this moderation!
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Written by John Olszewski
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What happened
The crucial occurrence of this last week
was the expected departure of the cold weather system followed by a temperature
recovery to a more normal range for the wintertime.
The cold weather spell was caused by the
persistent zone of low pressure centred on the areas from just west of the Cape
to the immediate inland interior. Some vortices developed as cold fronts
followed in rapid succession bringing persistent rainy weather down there and,
for us, the ability to push colder air northwards around the western edges of
this zone of disturbed weather and into our airspace.
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Written by John Olszewski
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La Nina conditions mean that the Southern
Oscillation has returned to normal. The pressure patterns are thus closer to
the normal for the South Pacific ocean. When this happens, it means that the
whole range of pressure patterns around the southern hemisphere also will have
reverted to their normal state.
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Understanding Weather 
