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April 2016 Climate Summary

The province experienced most rains in the West Coast and the Cape Winelands with lighter showers in the southern coastal parts.  Poor rains (mostly <10mm) were experienced in the northern parts of the West Coast as well as in the middle of the Central Karoo (slide 1).  When comparing the rainfall with the long term means (slide 2) we note above normal rainfall mostly in the West Coast and Cape Winelands.  Above normal rains were also observed in the western side of the Karoo regions.  Areas that experienced below normal rains include parts of the Overberg, Matzikama and Eden with extreme conditions in the Prince Albert region.

slide 1

Slide1

slide 2

Slide2

 

Slide 3 contains data representing 36 weather stations consisting of total monthly rainfall, mean monthly maximum (Tmax) and minimum temperatures (Tmin) for April 2016 and historical long term means.  As for the rainfall data for April, above normal rains occurred at various places (for example Clanwilliam, Elandsbaai, Koue Bokkeveld, Ladismith, Hopefield, Piketberg), but more weather stations revealed below normal rainfall conditions.  The latter is also reflected in the fact that half of the weather stations received between 24mm and 3mm rains during April.

 

The monthly mean temperatures (slide 3) in April 2016 were similar to the long term temperatures for both Tmax and Tmin, although anomalies varied for Tmax between 1.9ºC (Oudtshoorn) to -1.5ºC (Hopefield) and for Tmin between 1.5ºC (Murraysburg) to -0.9ºC (Oudtshoorn).  Monthly Tmax means for April 2016 ranged between 22.6ºC (Riviersonderend) to 30ºC (Citrusdal). The monthly Tmin means ranged between 7.5ºC (Misgund) to 15.3ºC (Klawer).

 Download Slide 3 PDF

 

slide 3

Slide 3

Slide 3 contains data representing 36 weather stations consisting of total monthly rainfall, mean monthly maximum (Tmax) and minimum temperatures (Tmin) for April 2016 and historical long term means.  As for the rainfall data for April, above normal rains occurred at various places (for example Clanwilliam, Elandsbaai, Koue Bokkeveld, Ladismith, Hopefield, Piketberg), but more weather stations revealed below normal rainfall conditions.  The latter is also reflected in the fact that half of the weather stations received between 24mm and 3mm rains during April.

 

The monthly mean temperatures (slide 3) in April 2016 were similar to the long term temperatures for both Tmax and Tmin, although anomalies varied for Tmax between 1.9ºC (Oudtshoorn) to -1.5ºC (Hopefield) and for Tmin between 1.5ºC (Murraysburg) to -0.9ºC (Oudtshoorn).  Monthly Tmax means for April 2016 ranged between 22.6ºC (Riviersonderend) to 30ºC (Citrusdal). The monthly Tmin means ranged between 7.5ºC (Misgund) to 15.3ºC (Klawer).

 

slide 4

Slide 4

slide 5

Slide 5


Climate predictions

ENSO is developing from El Niño towards a weak La Niña by Spring 2016 (slide 6).  The latter is normally associated with improved rainfall conditions in the summer rainfall areas of the country.

 

Seasonal forecasts for the period June to August concerning the Western Cape (slides 7 & 8):  CSAG predicts normal conditions for rainfall.  SAWS forecast a low probability for above normal rain over most of the province.  As for temperature, the forecasts concerning Tmax indicate 40%+ probability for above normal temperatures.  Both CSAG and SAWS advise users to review updated medium and short term forecasts to identify any change.

slide 6

Slide 6

slide 7

Slide 7

slide 8

Slide 8


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Agri-Oulook March 2016

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