Tuesday, Sep 16th

Last updateFri, 12 Sep 2014 9am

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

Breweries profit up 182%

Releasing its financial results in the capital this week, Namibia Breweries Limited announced a 10% decrease in operatin...

EIA clearance for prospective lead producer

North River Resources plc recently announced that the Ministry of Environment and Tourism had approved its application f...

Flower power starts jubilant spring

Flower power starts jubilant spring

Julie, Evelyn and Frieda joined the hundreds of late-season tourists flocking to the Tintenpalast gardens where spring h...

Bidvest to put N$500 million into horse mackerel processing on land

Diversified investment company, Bidvest Namibia, said its fisheries division is on the cusp of making a very substantial...

N$160 million dairy farm for Rundu

A new commercial-scale dairy farm is being constructed at the government’s agricultural experimental farm, Vungu Vungu...

MTC not to blame for high data usage

MTC customers are still complaining about the high data usage they are experiencing and they are blaming it on the high ...

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
02 May 2014 (912 hits)
Weather
What Happened? Surface level synoptics and alto level stream maps displayed a remarkable contradiction, but one that is not unknown for southern...
Weather
What Happened? As the southern hemisphere moves into the spring season, not only do the sunshine hours increase, the sun’s position itself changes...
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...
25 July 2014 (525 hits)
Weather
What’s Happening? The US government climate agency, known best by its acronym, NOAA, still indicates current conditions over the equatorial Pacific...
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? Generally a drier week than last week as seen in the recorded rainfall for the seven northern regions, but Omaheke is the glaring...
14 March 2014 (600 hits)
Weather
What Happened? The most noticeable feature of the week’s progression of synoptic charts is that the core of the high pressure cells in the...
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
The Metal and Allied Workers Union of Namibia (MANWU) and Swakop Uranium this week signed a labour agreement valid up to the end of next year, to...
Headlines
The development of a 230 to 250mW  medium to long-term generation facility worth N$3 billion at the coast in the Erongo Region will enter its...
Headlines
Releasing its financial results in the capital this week, Namibia Breweries Limited announced a 10% decrease in operating profit but a staggering...
Editors Desk
Our 88th position in the ranking of the latest Global Competitiveness report puts us somewhat below the halfway mark of 72. If one were to translate...
Markets
The Namibia Statistics Agency reveals ints GDP second quarter report that the GDP for the second quarter of 2014 recorded a growth of 3.0 % compared...

Film Industry setting sail

Friday, 12 September 2014

The Namibian Film Commission (NFC) this week showcased four of its productions, fully-funded by the Ministry of Informat...

Readmore

Aochamub retains SABA presidency

Aochamub retains SABA presidency

Friday, 05 September 2014

The Southern African Broadcasting Association (SABA) has re-elected Albertus Aochamub Namibia Broadcasting Corporation (...

Readmore

MVA rolls out campaign to curtail casualties

Friday, 12 September 2014

The practice of transporting employees at the back of open vehicles not fitted with safety mechanisms poses a risk of se...

Readmore

SA used car sales surge

Friday, 12 September 2014

Sales figure released last week show that New Car sales in South Africa have been declining but Used Care sales have exp...

Readmore

Second Quarter GDP growth at 3%

Friday, 12 September 2014

The Namibia Statistics Agency reveals ints GDP second quarter report that the GDP for the second quarter of 2014 recorde...

Readmore

FNB kicks dust in competition’s eyes

FNB kicks dust in competition’s eyes

Friday, 12 September 2014

First National Bank (FNB) Namibia Holdings last Friday released its full results reflecting a EBIT profit of N$1.171 bil...

Readmore

Why a competitiveness benchmark when we do not understand the concept Terms of Trade

Friday, 12 September 2014

Our 88th position in the ranking of the latest Global Competitiveness report puts us somewhat below the halfway mark of ...

Readmore

Blink again and all the large extractive projects have new owners

Friday, 05 September 2014

A meeting of mining and financing experts in Australia produced a serious difference of opinion between some of the dele...

Readmore

Offbeat 12 September 2014

Offbeat 12 September 2014

Friday, 12 September 2014

Forget Ebola, the awful things in the Middle East and your future as a roofing contractor. In order for humanity to surv...

Readmore

Changing media landscape

Changing media landscape

Friday, 05 September 2014

The arrival of social networking holds immediate implications for media use. Mobile browsing, on smart phones, has place...

Readmore

Women’s issues are men’s issues too

Women’s issues are men’s issues too

Friday, 12 September 2014

Following the recent retirement of Veronica De Klerk as Executive Director of Women’s Action for Development (WAD), th...

Readmore

Bible Societies meet

Bible Societies meet

Friday, 12 September 2014

Representatives from the Bible Societies of Namibia, South Africa, Botswana, Lesotho and Swaziland held their annual mee...

Readmore

Of BEE and tenders

Of BEE and tenders

Friday, 12 September 2014

As a black youth I am in favour of a policy directed at levelling the playing field in some way or form. Black Economic ...

Readmore

Debt, the bottomless pit

Debt, the bottomless pit

Friday, 05 September 2014

It seems the web of debt is always going to be a financial distress for millions out there including myself. Whether it ...

Readmore

Stars need outside the box sponsors

Stars need outside the box sponsors

Monday, 15 September 2014

Azeal Cheeze Matsoarelle is a radio presenter, promoter and events organiser who believes that Namibia is able to accomm...

Readmore

Film  Review - About Last Night

Film Review - About Last Night

Friday, 12 September 2014

Director: Steve Pink
Screenplay: David Mamet
Cast: Kevin Hart, Michael Early, Regina Hall and Joy Bryant
Genre: Romantic Co...

Readmore

Volleyball League makes a return

Volleyball League makes a return

Friday, 12 September 2014

After a long break from the season, the Bank Windhoek National Volleyball League continued last weekend in Windhoek.
In t...

Readmore

Table Tennis League concludes

Table Tennis League concludes

Friday, 12 September 2014

The Namibian Table Tennis Associations (NTTA) National Team League came to a thrilling conclusion (down to the final mat...

Readmore

12 September 2014

12 September 2014

Friday, 12 September 2014

What Happened?
In the southern hemisphere, when a pocket of air descends, it slowly starts revolving in an anti-clockwise...

Readmore

05 September 2014

05 September 2014

Friday, 05 September 2014

What Happened?
As the southern hemisphere moves into the spring season, not only do the sunshine hours increase, the sun...

Readmore

UNAM hosts EEASA conference

Friday, 12 September 2014

The University of Namibia, Namibia Environmental Education Network (NEEN), Regional Centre of Expertise in Education for...

Readmore

Recycling for the future

Recycling for the future

Friday, 29 August 2014

As the 2010 Youth Ambassador of Biodiversity, Elao Benjamin Martin represented the nation when he took part in the commo...

Readmore

Elevated swakara prices in Kopenhagen

Elevated swakara prices in Kopenhagen

Friday, 12 September 2014

Just over 52,000 swakara pelts changed hands last week at the Kopenhagen fur auction where Namibian karakoel farmers enj...

Readmore

Moving up in Agra’s ranks

Moving up in Agra’s ranks

Friday, 05 September 2014

Agribusiness retailer Agra announced this week it has promoted eleven people in the group to better serve its large clie...

Readmore

The Science ‘boffins’

The Science ‘boffins’

Friday, 12 September 2014

The National Commission on Research, Science and Technology in partnership with Nampower, hosted the first ever Quiz Nig...

Readmore

Great way learning about business

Great way learning about business

Friday, 12 September 2014

An innovative project that turns the boring subjects Business Studies and Accounting into fun-filled simulation exercise...

Readmore

Technology tour en route Windhoek

Technology tour en route Windhoek

Friday, 12 September 2014

The Ampion Venture Bus will cross four southern African countries, connecting tech hubs, investors, business people and ...

Readmore

New hotel for Swakopmund

New hotel for Swakopmund

Friday, 12 September 2014

The Development Bank of Namibia (DBN) announced that it is financing a new 54-room hotel in Swakopmund to the value of N...

Readmore

‘Carpe diem’ - seize the day

‘Carpe diem’ - seize the day

Friday, 12 September 2014

Nancy Muinjo is a charismatic, fun loving and driven woman despite the fact that she was diagnosed with breast cancer si...

Readmore

Merck supports UNAM with diabetes

Merck supports UNAM with diabetes

Friday, 12 September 2014

German pharmaceutical giant, Merck has started its second year fighting diabetes by adopting E–learning solutions to b...

Readmore

IPP to develop first PV plant

Friday, 12 September 2014

Omburu Sun Energy, a local Independent Power Producer (IPP) owned by renewable energy development company InnoSun Energy...

Readmore

Swakop Uranium, MANWU cement agreement

Swakop Uranium, MANWU cement agreement

Friday, 12 September 2014

Swakop Uranium and the Metal and Allied Workers Union of Namibia (MANWU) recently signed a substantive agreement coverin...

Readmore

Auas Mall nears completion

Auas Mall nears completion

Friday, 05 September 2014

The upgrade at the Auas Valley Shopping Mall is nearing completion and, showing its new, vibrant colours.
With most of th...

Readmore

Pick n Pay Auas almost done

Friday, 29 August 2014

The current upgrading of the Pick n Pay Auas Valley store is nearing completion around October and the retailer has prom...

Readmore

Labour Force Survey to correct past errors

Friday, 12 September 2014

The statistics show that 51% of all households derive their income through salaries and wages, 19% indicated their main ...

Readmore

Bank Windhoek recognises employees

Bank Windhoek recognises employees

Friday, 12 September 2014

Mariental Branch was awarded the Best Overall Branch at the 2014 Bank Windhoek Annual Executive Awards ceremony, held la...

Readmore

Action Coach