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Written by John Olszewski
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While most of the country enjoyed the pleasantries of the winter season, i.e. warm by day but cool to cold overnight, further south conditions were not as mild.
South of the Orange River brought one into the northward range of a cold front sequence which dominated the winter rainfall area. This may seem normal, but there is more to come. The zone of extensive turbulence lay somewhat further south and covered the hemisphere southward to the edges of Antarctica.
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Written by John Olszewski
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Following the active weather patterns of the previous week, the overall weather picture returned to quiescence for much of the country. This meant that daytime temperatures became warmer while nighttime severity also took a rest. In other words, our idea of a placid winter regained its hold. The increasing amount of haze (continental haze) was the visible sign of warmer air setting up house. Excellent visibility usually is an indicator of cold or moisture.
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Written by John Olszewski
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The second major vortex pattern across the last two weeks made its activity felt, as was expected, during these past 7 days.
The development of a strong vortex west of the sub-continent was followed by a secondary vortex formation creating a gap of some 300km wide. This was aided by an upward development, the upper air trough and a well marked cold front driven by yet another anticyclone fueling it with polar air on its west side.
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Understanding Weather 
