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November 2016 Climate Summary

The Western Cape received rains mostly in the southern districts while poor rainfall (red and orange areas indicating respectively less than 6mm and 11mm) occurred in the northern parts of the province (slide 1).     

When comparing the month’s rainfall against the historical long term means (slide 2), the West Coast, the Central Karoo and parts of the Overberg, Cape Winelands and Little Karoo obtained only 25% (red) to half (orange) of their normal monthly rainfall for November.  The rest of the province (southern parts) also showed below normal rainfall but less extreme compared to the previously mentioned northern areas. 

slide 1


slide 2


Slide 3 summarizes data from 32 weather stations which take into account total monthly rainfall, mean monthly maximum (Tmax) and minimum temperatures (Tmin) for November 2016 including corresponding historical long term means.  While only isolated weather stations showed reasonable rainfall, most weather stations clearly indicated poor rainfall which presented an overall of only 20 % of the long term mean rainfall for November.   In addition half of the weather stations recorded monthly total rainfall equal to or less than 3mm. 


Monthly mean Tmax of the weather stations ranged between 21.3 to 33.1 ºC while the long term equivalent were between 21.5 to 31.7 ºC, which indicated a higher extreme maximum of Tmax for Nov 2016.  Incidentally, both high extreme Tmax figures (2016 and long term average) emanated from the Citrusdal weather station.  The overall average Tmax of the 32 weather stations was 27.9 ºC thus one degree higher than the long term mean (26.7 ºC).  Tmax anomalies ranged between -0.3 to 2.7 ºC confirming above normal temperatures for November 2016, of which 19 of 32 weather stations rendered anomalies of at least 1 ºC. 


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slide 3

Slide 3

slide 4

Slide 4

Monthly mean Tmin at the same weather stations presented an overall average of 12.0 ºC (same as long term mean), ranging between 9.2 to 16.0 ºC, again similar to the long term.  Both low extreme Tmin figures (2016 and long term mean) emanated from the De Keur weather station in the Koue Bokkeveld.  Tmin anomalies ranged between -1.7 to 0.8 ºC which reveal that only two anomalies being more extreme than -1 ºC

Slide 4 summarizes the state of provincial dam levels which averaged 54% (last year 63%) at the end of November, indicating a further decrease.  The Floriskraal and Kammanassie dams each consisted of water levels of 12%. 

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Agri-Oulook November 2016

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