Sunday, Jul 05th

Last updateFri, 03 Jul 2015 10am

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

Development Bank experts investigate stalled projects

Following the cancellation of the controversial Xaris power project by the Minister of Mines and Energy, Hon. Obeth Kand...

Trustco diamonds slip at Competition Commission

In the same week that Trustco Group International declared revenues exceeding one billion Namibia Dollar, the prospectiv...

Swakop Uranium tackling unemployment

Swakop Uranium tackling unemployment

New Swakop Uranium employees who received induction beginning of this month.

Thank you Sir for warm daily nourishment

Thank you Sir for warm daily nourishment

Jonathan from the Havana informal settlement experienced a proud moment when the Minister of Poverty Eradication and Soc...

Mine workers claim to suffer systematic victimization

According to the Mine Workers Union of Namibia (MUN), mine workers in the country face systematic victimization from the...

Diamonds and pearls for Trustco Holdings

Diamonds and pearls for Trustco Holdings

Trustco Holdings is set to enter into an agreement for the purchase of diamond mining and exploration entity, Huso Inves...

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
The controlling wind flow in both hemispheres is that of the Trade Winds which feed the Torrid Zone and its core rainfall belt (the Inter-Tropical...
Weather
What happened? That the climate has changed is beyond question. It deserves consideration regarding both the extent and impact were we are concerned....
Weather
What happened? As the week progressed, the daily synoptic pattern grew in complexity. The persistent turbulence as presented by the upper air charts...
18 April 2014 (853 hits)
Weather
What Happened? A prominent trough developed over the previus weekend leading to the by-now signature airflow from southern Angola to the interior of...
Weather
What happened? When applying such words as “normal” to weather and climate in our context, the essence of our arid environment must be...
07 March 2014 (905 hits)
Weather
What Happened? If one divides Namibia into a south-western half and a north-eastern half, the separation line runs roughly from around Ruacana in the...
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...
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
In view with President Hage Geingobs vision for Namibia, where no Namibian should be left behind Standard Bank Namibia has launched their first ever...
Headlines
As Netflix prepares to tap into untapped markets around the world, just how prepared is Naspers-owned MultiChoice for the impending competition?
Headlines
Following the cancellation of the controversial Xaris power project by the Minister of Mines and Energy, Hon. Obeth Kandjoze, a well-placed energy...
Headlines
In the same week that Trustco Group International declared revenues exceeding one billion Namibia Dollar, the prospective diamond miner also had to...
Editors Desk
As the first semester came to an end, the trend in worldwide markets since the third week of April, seems to have entered a downward phase.
Go and be the servants of this nation

Go and be the servants of this nation

Friday, 03 July 2015

Improving the operational efficiency of the security staff at the Namibian Ports Authority forms part of the current por...

Readmore

ERP revolution hits Africa

Friday, 03 July 2015

Cloud ERP has officially arrived on the shores of Africa, sparking an Enterprise Resource Planning (ERP) revolution.

Readmore

Unique Defender to land

Unique Defender to land

Friday, 03 July 2015

In celebrating 67 years of iconic Land Rover production, a unique vehicle has been built to commemorate the UK productio...

Readmore

DHL invests big in sub-Sahara Africa

DHL invests big in sub-Sahara Africa

Friday, 03 July 2015

DHL Express, a subsidiary of the global Deutsche Post group, said this week it sees sub-Sahara Africa as one of the most...

Readmore

Economic growth slows to 3.1% in Q1

Economic growth slows to 3.1% in Q1

Friday, 03 July 2015

Economic growth for the first quarter of this year slowed significantly compared to the first quarter in 2014. This week...

Readmore

Standard Bank launches youth account

Standard Bank launches youth account

Friday, 03 July 2015

Standard Bank Namibia launched their first children’s saving account called the Digi Youth Account on Tuesday.

Readmore

Interest rates can set off a major contraction

Friday, 03 July 2015

As the first semester came to an end, the trend in worldwide markets since the third week of April, seems to have entere...

Readmore

Perhaps, one day we shall afford property again

Friday, 26 June 2015

It may be a little too early to jump to conclusions but I sense a moderation in the property market. It may also be just...

Readmore

Be on the winning side and keep out of the crossfire

Be on the winning side and keep out of the crossfire

Friday, 03 July 2015

No too long ago we first heard about the ‘peak oil’ theory and were made to believe that from now on the supply of oil w...

Readmore

The product development process

Friday, 03 July 2015

In the previous deliveries I looked at a dialectic approach to innovation, the role that serendipity plays, and how sere...

Readmore

Church Alliance grows funding for orphans

Church Alliance grows funding for orphans

Friday, 03 July 2015

The final chapter in US funding for vulnerable children under the care of the Church Alliance for Orphans (CAFO) was con...

Readmore

What the youth wants on TV

What the youth wants on TV

Friday, 26 June 2015

A group of media student from the Conservatoire and the Polytechnic came up with very insightful suggestions when prompt...

Readmore

This is Africa....everything is slow!

This is Africa....everything is slow!

Friday, 03 July 2015

Excellent, nothing like starting a column with a very old cliché. When I first came to Africa, I had a suitcase full of ...

Readmore

I am running out of time

I am running out of time

Friday, 03 July 2015

Tick, tock, tick, tock that is the only sound that has been echoing in my head these past few weeks and I am trying to f...

Readmore

Best musicians get their NAMA prize money

Best musicians get their NAMA prize money

Friday, 03 July 2015

The Namibian Music Awards prize-giving ceremony was broadcast live this Wednesday on NBC Television.

Readmore

Inside Out - Film Review

Inside Out - Film Review

Friday, 03 July 2015

Have you ever wondered what it would be like to get an inside look into your emotions or that of another person. Well Di...

Readmore

Brave Warriors ready for Chipolopolo

Friday, 03 July 2015

The Brave Warriors will have to be extra cautious on Saturday afternoon in Zambia when they go into battle against a wou...

Readmore

Standard Bank Super Cup set for August

Standard Bank Super Cup set for August

Friday, 03 July 2015

Soccer lovers can look forward to the most anticipated football game between MTC Premier League winner African Stars and...

Readmore

Weather 03 July 2015

Weather 03 July 2015

Friday, 03 July 2015

What Happened
When a cold, dense airmass moves horizontally, it tends to descend because of its higher density.

Readmore

Weather 26 June 2015

Weather 26 June 2015

Friday, 26 June 2015

What Happened
The synoptic pattern at the beginning of the week presented a fairly standard mid-winter picture. The domin...

Readmore

Hunters fight poachers

Friday, 26 June 2015

The clear and present danger to the local rhino and elephant populations, has not escaped the keen eyes of local profess...

Readmore

A third of big groundwater basins in distress

A third of big groundwater basins in distress

Friday, 19 June 2015

A National Aeronautical and Space Administration (NASA) study has found that about one third of the Earth’s largest grou...

Readmore

All bets on grapes and dates for Agribusdev

Friday, 03 July 2015

The Agricultural Business Development Agency (AGRIBUSDEV) plans to devote the Orange River Irrigation Project (ORIP) to ...

Readmore

30% Meatco equity for Government

30% Meatco equity for Government

Friday, 03 July 2015

Meatco Board Chairperson Namundjebo-Tilahun, last week announced that the Minister of Agriculture, Water & Forestry ...

Readmore

Intern doors open for Poly students

Intern doors open for Poly students

Friday, 03 July 2015

In an effort to make available more internships for Polytechnic students, the progressive educational institution last w...

Readmore

Bean counters invest in business education

Bean counters invest in business education

Friday, 26 June 2015

After nine years of supporting local students with bursaries, SGA Chartered Accountants and Auditors have invested more ...

Readmore

Low tourist activity experienced

Friday, 03 July 2015

FNB Namibia and Fenata have released the first tourism/travel index for 2015 which hints towards lower tourist activity ...

Readmore

Hilton leading hospitality in Africa

Hilton leading hospitality in Africa

Friday, 03 July 2015

The Hilton Hotel in Windhoek has been recognised as Namibia’s Leading Hotel for the third consecutive year at the Africa...

Readmore

USAID grant expands HIV testing and treatment

USAID grant expands HIV testing and treatment

Friday, 03 July 2015

The United States Government, in partnership with the Ministry of Health and Social Services (MOHSS) and faith-based med...

Readmore

Traditional herbs trader on the rise

Traditional herbs trader on the rise

Friday, 26 June 2015

Jonathan Kock has worked in various positions for several institutions before he decided to open his own business called...

Readmore

Xaris partners with Ariya

Monday, 29 June 2015

Xaris Holdings, a power developer company incorporated in Mauritius, and Ariya Capital Group, have announced they will b...

Readmore

Xaris above board says MD

Friday, 19 June 2015

The energy project under way in Walvis Bay to generate 250 Megawatts of power, primarily for the local market, is comple...

Readmore

Kalimbeza rice for local retail market

Kalimbeza rice for local retail market

Friday, 03 July 2015

The first Namibian-grown, processed and packaged rice, under the Kalimbeza Rice label, have entered commercial trading t...

Readmore

Calling all aspiring restaurant owners

Calling all aspiring restaurant owners

Friday, 26 June 2015

Building or renting property for business purposes requires large amounts of capital in order for the business to be ful...

Readmore

German Armed Forces get new commandant

German Armed Forces get new commandant

Friday, 03 July 2015

Late last month, Lieutenant Colonel Rainer Hoch took over the command of the Technical Advisory Group of the German Arme...

Readmore

New construction minimum wages

New construction minimum wages

Friday, 03 July 2015

This week, the Construction Industries Federation (CIF) and the Metal and Allied Namibian Workers Union (MANWU) signed a...

Readmore

No Images