Friday, Oct 24th

Last updateFri, 24 Oct 2014 9am

You are here: Home Weather Understanding Weather - not predicting -
IMS

Simasiku plans to shake up energy

Former Chief Executive Officer of the Electricity Control Board of Namibia, Siseho Simasiku is at the forefront of a con...

Retail Charter in negotiation phase

Minister of Trade and Industry, Calle Schlettwein launched negotiation talks for the Namibian Retail Charter at the Nami...

Solid business ideas originate from Ongwediva conference

Solid business ideas originate from Ongwediva conference

The winner of the Best Business Idea competition run by the Economist Businesswomen Club after their Businesswomen Confe...

Ostriches back in vogue

The most discredited agricultural commodity, ostriches, are back on the farming radar after the Ministry of Trade and In...

Namibia commemorates World Food Day

Namibia commemorates World Food Day

The City of Windhoek commemorated World Food Day yesterday at Otjomuise. This is the first ever commemoration of the Wor...

NamPower sighs relief as new PPA is signed

NamPower sighs relief as new PPA is signed

The power utility company NamPower on Thursday signed a new Power Purchase Agreement (PPA) with Zimbabwe Power Company (...

Understanding Weather - not predicting -

What happened?
This past week an unusual synoptic pattern has held sway across the southern hemisphere. A major anticyclone with core pressures well above 1030hPa straddled the Date Line (180o) in the south Pacific while on our side, a complex low pressure pattern covered most of southern Africa and the southern oceans.
Both high and low pressure systems have been static for this period. Static in position but active within themselves: anticyclonic strength ensured a consistent flow to maintain La Nina’s, positive oscillation, and dominance of global weather.
The complexities of the vortex areas see one core deepen, drift somewhat eastward while in the cold, unstable polar air behind it a secondary vortex quickly forms, weakening the older core, then the same cycle is repeated. The effect of this pattern maintained a zonal flow throughout the troposphere (surface to 40000 feet) above southern Africa.
The unusual feature is that these differing systems have held their geographical placing while whatever else may be on the weather map either by-passes or collapses while these two major systems remain.
The other unusual feature is the global situation on either side of globe: the high and the low. Again, the effect saw a limited, if not absent, eastern Atlantic anticyclone, and similarly an absence of the western Indian Ocean anticyclone.
This departure from the norm means there is no lower level moisture input from the Indian Ocean, so with no push from the east, the heat-low pressure belt across southern Africa remains static ensuring that over Namibia there has been an advection of bone dry southerly air. This limits daytime temperatures but with no anticyclonic thrust it cannot undercut the heat-low. Without convergence, there is no cumulus cloud and no rain!
The thin layer of cloud visible has too little moisture but its presence offers hope for improvement as November wears on.
What’s coming?
The vortex pattern persists. The weak South Atlantic anticyclone remains limited throughout the period and because there is little ability to ridge round the continent, any development of a cell away to the east is restricted. Any prospect of late Spring showers depends on the persistent heat-low generating an upward convective extension to tap the adjacent moister air mass gathering above much of Zambia, linking with the equally adjacent Congo air mass then to advect this combination into our Kavango area or further west.
Current outlooks show a mixed set of patterns across the northern mid-subcontinent. Much of the data available is based on satellite images showing cloud coverage and direction of movement. Other observational sources in that area are, largely, non-existent. This data provides the grist from which computer models are built. Otherwise, it is up to a weather observer to assess what is seen to be present and offer an outlook regarding what the current situation will be able to evolve. The heat factor is seen to be increasing and its effects, as outlined earlier, offer a prospect of showers into the new week. n the south west, temperatures will be considerably cooler with a fresh southwesterly wind as a result of the high ridging in from the south Atlantic.

Articles In This Category
Weather
Weather
What happened? The week’s dry outlook was fulfilled, we had only the role of spectator while much of the world, let alone our hemisphere, chalked...
Weather
What happened? For more than just a few weeks the main anticyclonic core in the southern hemisphere has extended from the western South Atlantic...
28 March 2014 (540 hits)
Weather
What Happened? Conditions this week were somewhat anomalous. A prominent high pressure cell developed south-east of South Africa with its core some...
Weather
What happened? The progression of winter was delayed yet again by another secondary vortex development. Behind the well-marked Atlantic trough, the...
Weather
What happened? ”Weather” is renowned for its ability to achieve the unusual and do so with scant advice to the onlooker. A week ago a quite...
Weather
Weather
El Nino and its driving force, the Southern Oscillation, are back in the news. Not because of their presence, but because of a possible resurgence....
Weather
What happened? The New Year’s greeting was accompanied by the percussion of thunder, the flash of lightning and the steady beat of myriad...
Weather
What happened? The probability of a cold intrusion was fully met as the flow behind a cold front swept, perhaps obliquely, across much of Namibia....
Related Articles
Weather
What happened? At an unusual time of the year we have seen, one way or the other, a departure from synoptic patterns prevalent across the southern...
Weather
 What happened? That the world’s weather patterns are at odds with themselves seems to be a common consensus. Primarily the cause is to be...
Weather
What happened? We have seen an interesting hiatus in the development of weather patterns variously around the world as year 2011 progressed. Seasons...
Weather
What happened? Summer begins with December. From one aspect at least, a start is made to summer as pressure patterns move toward a summery stance....
Weather
What happened? This week was marked by a cut-off low over the Orange River in the south and a broad trough of tropical moisture moving in from Angola...
Latest Articles
Headlines
Agra’s well-known outdoors outlet, Safari Den was literally elevated to another level with the opening of the new shop this week Wednesday....
Headlines
A newly formalised conceptual framework for the development of the transport sector, expects an explosion in transport and logistics as Namibia is...
Headlines
Former Chief Executive Officer of the Electricity Control Board of Namibia, Siseho Simasiku is at the forefront of a consumer advocacy group that...
Editors Desk
Towards the middle of the recent Windhoek Show, long queues started forming around the back end of the President’s Hall. From the Wednesday onward,...
Weather
What Happened? For the observer on the surface there is always one indisputable indicator of humidity in the upper air and that is the vapour trail...
N$40,000 for Bible walk

N$40,000 for Bible walk

Friday, 24 October 2014

Officeconomix and Homeconomix will once again be the main sponsors for this year’s Walk for Bibles in Windhoek. Each o...

Readmore

Major sponsors boost tech tour

Friday, 24 October 2014

The AMPION Venture Bus technology tour that is en route to Windhoek has received support from major international compan...

Readmore

Car sales up 8.8% yoy

Friday, 24 October 2014

A total of 15,881 have been sold year to date while 1,912 new vehicles were sold during September, up 12.9% month on mon...

Readmore

Logistics workshop successful

Logistics workshop successful

Friday, 24 October 2014

The Annual Logistics and Transport workshop took place in the capital late last month and covered a wide range of topics...

Readmore

Sanlam raises the bar

Sanlam raises the bar

Friday, 24 October 2014

In an effort to provide the additional convenience to its clients, Sanlam Namibia Holdings officially began using a Poin...

Readmore

Benchmark fund crosses N$1.3 bn in assets

Benchmark fund crosses N$1.3 bn in assets

Friday, 24 October 2014

The Benchmark Retirement Fund, a Namibian umbrella fund, which was founded on 1 January 2000, announced its results for ...

Readmore

Can one individual have such a profound impact?

Friday, 24 October 2014

Towards the middle of the recent Windhoek Show, long queues started forming around the back end of the President’s Hal...

Readmore

US and European consumers do not want to come to the party

Friday, 17 October 2014

Can one imagine how unmanageable the Namibian capital market would be if yields on government bonds came down by 11% on ...

Readmore

Including innovation in the planning cycle

Including innovation in the planning cycle

Friday, 24 October 2014

In previous articles, I discussed the role of a corporate innovation manager and also the team who will be involved in m...

Readmore

Offbeat 24 October 2014

Offbeat 24 October 2014

Friday, 24 October 2014

Social media, being a group phenomenon, requires threat alerts and, in the absence of significant threats, individual me...

Readmore

To win the war against hunger, only have children that you can take care of

To win the war against hunger, only have children that you can take care of

Friday, 24 October 2014

More than 300,000 Namibians had little or nothing to eat in May 2013. By the end of the year, that number increased to 4...

Readmore

Councillors work for communities

Councillors work for communities

Friday, 24 October 2014

The Gibeon constituency office through its constituency development fund recently handed over equipment, material and go...

Readmore

Where is the competition?

Where is the competition?

Friday, 24 October 2014

In economics, competition is the rivalry among sellers trying to achieve such goals as increasing profits, market share,...

Readmore

Of public service officials

Of public service officials

Friday, 17 October 2014

What seemed like a prompt visit to the Ministry of Education to obtain school leaving certificates have left me scared a...

Readmore

Egyptian Villa 69 this weekend at the Goethe Centre

Egyptian Villa 69 this weekend at the Goethe Centre

Friday, 24 October 2014

The 2013 Abu Dhabi Film Festival Jury Prize Winner “Villa 69”, by Ayten Amin, Egypt, 2013, will be premiered in Nami...

Readmore

Youth to enjoy last African film for the year

Youth to enjoy last African film for the year

Friday, 24 October 2014

AfricAvenir and the Franco Namibian Cultural Centre together with Goethe-Centre/NaDs will be screening the last African ...

Readmore

CAF final: A west African affair

CAF final: A west African affair

Friday, 24 October 2014

All roads on Sunday will lead to the Sam Nujoma Stadium, to witness the battle between Nigeria and Cameroon in the CAF W...

Readmore

Hardap to host maiden Table Tennis tourney

Hardap to host maiden Table Tennis tourney

Friday, 24 October 2014

FNB Namibia sponsored N$15,000 towards the Namibian Table Tennis Association (NTTA) for hosting this year’s event of t...

Readmore

24 October 2014

24 October 2014

Friday, 24 October 2014

What Happened?
For the observer on the surface there is always one indisputable indicator of humidity in the upper air an...

Readmore

17 October 2014

17 October 2014

Friday, 17 October 2014

What Happened?
The layered atmospheric sandwich that started developing last week continued up to Wednesday this week at ...

Readmore

Swakopmund hosts marine scientists

Friday, 24 October 2014


By Comfort Ajibola
[email protected]

At the opening of the official third global Large Marine Ecosystem Conference,...

Readmore

Elders considered in disaster planning

Elders considered in disaster planning

Friday, 24 October 2014

The City of Windhoek celebrated the International Day for Disaster Reduction on Wednesday at the Katutura Old Age Home. ...

Readmore

More clinics for cattle farmers

More clinics for cattle farmers

Friday, 24 October 2014

Livestock farmers in the Northern Communal Areas (NCAs) this past weekend inaugurated two more animal health clinics, fu...

Readmore

Organic agricultural training

Organic agricultural training

Friday, 17 October 2014

The Namibian Organic Association (NOA) recently attended the Regional Training Workshop on Marketing and Extension suppo...

Readmore

Wanted – three girls to study finances

Friday, 24 October 2014

Three regions were selected last week by the Ericah Shafudah Financial Management Foundation Trust to find the first thr...

Readmore

Bandwidth for learning

Bandwidth for learning

Friday, 24 October 2014

Pushing for the use of technology in all its operations, now including teaching and learning, the Polytechnic of Namibia...

Readmore

Hilton triumphs at World Travel Awards

Hilton triumphs at World Travel Awards

Friday, 24 October 2014

Hilton Windhoek has been recognised as Namibia’s Leading Hotel at the finals of the renowned World Travel Awards 2014,...

Readmore

Safe plastic ideal for travellers

Friday, 24 October 2014

With the festive season at our doorstep, holiday makers and business travellers alike are bound to go around the globe a...

Readmore

Movember has arrived

Friday, 17 October 2014

The Cancer Association of Namibia (CAN) launched the 6th Movember campaign to encourage men to grow their moustache for ...

Readmore

Armed forces receive field hospital

Armed forces receive field hospital

Friday, 10 October 2014

More than 150 people gathered to fill the seats and bleachers to witness the U.S. Government hand over a surgical field ...

Readmore

Shaw River secures off-taker

Friday, 24 October 2014

Shaw River Manganese has locked in Noble Resources Pte Limited for the sale of up to 30,000 tonnes of manganese ore mine...

Readmore

Eco Atlantic initiates drilling

Friday, 24 October 2014

Eco Atlantic Oil and Gas recently commenced its planned 3D seismic drilling survey on its Cooper Block located in the Wa...

Readmore

Auas Valley Safari Den opens

Auas Valley Safari Den opens

Friday, 24 October 2014

Agra celebrated the opening of their extended and revamped Safari Den store in the Auas Valley Shopping Mall on Wednesda...

Readmore

Retail Merchandising Strategy on cards

Friday, 10 October 2014

One of the main factors undermining the purchase of local produce is poor visibility in-store and on-shelf as said by Te...

Readmore

Pushing for self-empowerment

Friday, 24 October 2014

Her Liberty Namibia is a new non-governmental organization that plans to engage, represent and participate in activities...

Readmore

Leadership key to business success

Leadership key to business success

Friday, 17 October 2014

FNB Namibia last week hosted a business breakfast at which Brand Pretorius, retired Chief Executive Officer of McCarthy ...

Readmore

Action Coach