Select Page

The Week’s Weather up to Friday 28 July. Five-day outlook to Wednesday 02 August

The Week’s Weather up to Friday 28 July. Five-day outlook to Wednesday 02 August


Map: Isobars at surface level and the vertical distance between 1000 mB (sea level) and 500 mB (around 18,000 feet) in colour shaded areas. Forecast for Sunday 30 July 2017. Lighter areas indicate a lower 500 mB surface (thinner atmosphere) while darker colours indicate a higher 500 mB surface (thicker atmosphere). Source: GrADS/Cola.


The main feature of this week’s weather is the extended high pressure cells around the southern hemisphere. There are still only four major core areas with relatively large distances between the cores. This space has been invaded by the outer fringes of the high pressure cells leading to elongated, expansive cells covering vast distances of the southern hemisphere oceans.

It is best seen in the southern Indian high pressure cell which grew in extent as the week progressed. By Friday it formed on continuous cell from Perth in Australia westward across the ocean to the South African highveld. On the subcontinent’s western side, lower pressures were in place but only a few hundred kilometeres offshore, the South Atlantic high pressure cell started and it reached all the way to the Argentinian coastline in South America.

When the highs disperse over such vast areas, they form contiguous zones preventing air to flow from north to south or vice versa. It is only on their leading and trailing edges that frontal systems can develop and it is only in these very narrow, restricted funnels where tropical air is convected into the colder climate in the south, or cold antarctic air is transported north into the warmer zones.

In effect, the large, expansive high acts like a cushion, buffering the southern African sub-continent against a direct blast from the south.

A very strong frontal system developed some distance out to sea over the Atlantic but the trailing edge of the high over the sub-continent, drove the approaching front southward. Two lesser cold fronts ahead of the mammoth system crossed south of Cape Agulhas during the week but the high’s buffering effect prevent them from making landfall.

The combined result of all these elements is a very mild winter. While the nights are cold due to the presence of the high pressure cell over the sub-continent, the transport mechanism that normally would have brought intensely cold air from the south onto the mainland, is prevented from functioning.

Coupled with the increased number of sunshine hours per day, now just over 11 hours, and the sun’s angle that also increases by a few degrees per day, the weather shows the typical late-winter see-saw pattern.

Nights are cold because the air in the high pressure cell is cold, but during the day the increased solar energy quickly warms up the entire sub-continent. Another observable phenomenon is the direction of the airflow on the surface. During the night it backs from south-west to south-east but as soon as the sun is up, it swing around to north-east.

Since the high pressure cells always migrate from west to east, it means that the air travels a much longer distance during the day over the mainland, giving it ample opportunity to get warmer. It is best observed in Namibia’s north-western corner (Kunene Region) where the afternoons easily reached 30°C during the week. This is the result of air heating up as it travels over land, in this case from Mozambique across Zimbabwe, Botswana and Zambia before entering Namibia from the north-east. It has a long time and long terrestrial distance to get warmer.

The overall picture in Namibia presented a marked difference between conditions in the northern half compared to the southern half. Especially in the south-east up to Aminius conditions were noticeably cooler than the rest of the country. However, even here where nighttime temperatures went down to 2°C, the days quickly became warm, comfortably reaching 24°C in the afternoons.

What’s Coming

The continental high departs over the weekend while the core of the next approaching South Atlantic high is still some 3000 kilometres offshore. A very strong depression develops ahead of the high’s leading edge, as shown in the map.

By Sunday a so-called cut-off low sits about 600 km west of Cape Town. It collapses within 24 hours but it has the effect of bringing low-pressure conditions to Namibia.
This system is expected to bring rain to the Western Cape on Monday and Tuesday but the local effect is to create a strong north to south airflow. This may even bring some cloud to the Namibian interior from Tuesday onward.

The strength of the high’s leading edge is eroded by the collapsing cut-off low, and it slips around Cape Agulhas by Tuesday night. For the three days, Monday to Wednesday, conditions over Namibia’s interior may be windy, especially during the night, but the days will continue to get warmer.

With the absense of large pressure differentials, no Oosweer is expected.



About The Author


In Memoriam. The weekly weather column is maintained in honour of the legacy of John Olszewski, the widely respected and well-known weatherman of Namibia. After writing the weather column for more than twelve years, he has left an indelible mark at the Economist, and the technical ability among the editorial staff to "read" the maps that he used so often. - Ed.

Following reverse listing, public can now acquire shareholding in Paratus Namibia


20 February 2020, Windhoek, Namibia: Paratus Namibia Holdings (PNH) was founded as Nimbus Infrastructure Limited (“Nimbus”), Namibia’s first Capital Pool Company listed on the Namibian Stock Exchange (“NSX”).

Although targeting an initial capital raising of N$300 million, Nimbus nonetheless managed to secure funding to the value of N$98 million through its CPC listing. With a mandate to invest in ICT infrastructure in sub-Sahara Africa, it concluded management agreements with financial partner Cirrus and technology partner, Paratus Telecommunications (Pty) Ltd (“Paratus Namibia”).

Paratus Namibia Managing Director, Andrew Hall

Its first investment was placed in Paratus Namibia, a fully licensed communications operator in Namibia under regulation of the Communications Regulatory Authority of Namibia (CRAN). Nimbus has since been able to increase its capital asset base to close to N$500 million over the past two years.

In order to streamline further investment and to avoid duplicating potential ICT projects in the market between Nimbus and Paratus Namibia, it was decided to consolidate the operations.

Publishing various circulars to shareholders, Nimbus took up a 100% shareholding stake in Paratus Namibia in 2019 and proceeded to apply to have its name changed to Paratus Namibia Holdings with a consolidated board structure to ensure streamlined operations between the capital holdings and the operational arm of the business.

This transaction was approved by the Competitions Commission as well as CRAN, following all the relevant regulatory approvals as well as the necessary requirements in terms of corporate governance structures.

Paratus Namibia has evolved as a fully comprehensive communications operator in Namibia and operates as the head office of the Paratus Group in Africa. Paratus has established a pan-African footprint with operations in six African countries, being: Angola, Botswana, Mozambique, Namibia, South Africa and Zambia.

The group has achieved many successes over the years of which more recently includes the building of the Trans-Kalahari Fibre (TKF) project, which connects from the West Africa Cable System (WACS) eastward through Namibia to Botswana and onward to Johannesburg. The TKF also extends northward through Zambia to connect to Dar es Salaam in Tanzania, which made Paratus the first operator to connect the west and east coast of Africa under one Autonomous System Number (ASN).

This means that Paratus is now “exporting” internet capacity to landlocked countries such as Zambia, Botswana, the DRC with more countries to be targeted, and through its extensive African network, Paratus is well-positioned to expand the network even further into emerging ICT territories.

PNH as a fully-listed entity on the NSX, is therefore now the 100% shareholder of Paratus Namibia thereby becoming a public company. PNH is ready to invest in the future of the ICT environment in Namibia. The public is therefore invited and welcome to acquire shares in Paratus Namibia Holdings by speaking to a local stockbroker registered with the NSX. The future is bright, and the opportunities are endless.