Monday, Jan 26th

Last updateFri, 23 Jan 2015 10am

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

Paladin’s revenue spikes 79%

A downturn in the spot price of uranium has not deterred production at Paladin Energy’s Langer Heinrich operation. Lan...

TransNamib begs for N$9 billion bail out

TransNamib unveiled its first consignment of 21 locomotives this week at the Windhoek train station.
The 5 locomotives ar...

Akwenye is new DBN Chairperson

Akwenye is new DBN Chairperson

Former Chief Executive Officer at Millennium Challenge Account Namibia, Penny Akwenye has been appointed as Development ...

Nedbank Namibia MD excited about 2015 prospects

Nedbank Namibia MD excited about 2015 prospects

Nedbank Namibia’s Managing Director Lionel Matthews said he is excited by the bright prospects for Nedbank Namibia in ...

Shiny wheels keep Hardap rolling

Shiny wheels keep Hardap rolling

Wednesday was Christmas all over again for the Hardap Regional Council. The six constituency offices received a fleet of...

U-pgrade tweaking gains momentum

Efforts to commercialise Marenica’s U-pgrade processing technology gained momentum this week when Australian based min...

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
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? When applying such words as “normal” to weather and climate in our context, the essence of our arid environment must be...
Weather
What Happened? The presence of a weak lower pressure area over the western half at midweek, both the beginning and the end of the week were...
Weather
What happened? The gradual approach of the fringes of the tropical airmass has proceeded despite an unfavourable upper air pattern dominating the...
25 April 2014 (941 hits)
Weather
What Happened? After some weeks of  zonal airflow indicated on the local synoptic map, the latter part of this week saw a return to the typical...
Weather
Weather
What happened? That complexity is a part of weathers’ pattern is endemic; not always apparent but is shown on today’s charts with complex vortex...
28 March 2014 (564 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...
08 August 2014 (522 hits)
Weather
What Happened? Low pressure control of both the surface and the upper air remained the dominant feature of the week. Earlier in the week, the South...
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
At the dawn of Independence in 1990, the Peace Corps Volunteer relationship between Namibia and the United States started. More than 1500 volunteers...
Headlines
Witvlei Meat Managing Director Sydney Martin said this week that the government has not kept its promise of allocating a sufficient quota to its...
Headlines
A downturn in the spot price of uranium has not deterred production at Paladin Energy’s Langer Heinrich operation. Langer Heinrich produced 27%...
Weather
What Happened With the Kaiser’s birthday on Tuesday, folklore has it the rain season only starts now. There may be more truth in this...
Editors Desk
Throughout this year, the verdict on the Eurozone cardhouse will remain in the balance. If the European Central Bank’s copycat experiment work,...
SA to Chair the Group of 77

SA to Chair the Group of 77

Friday, 23 January 2015

Earlier in the month, South Africa assumed the Chair of the Group of 77 (G77), at the United Nations Headquarters in New...

Readmore

Africans struggling to maintain territorial integrity

Friday, 23 January 2015

The latest report from Think Security Africa is the organisation’s fifth annual review on security in Africa suggests ...

Readmore

BMW Motorrad sales increase by 7.2%

BMW Motorrad sales increase by 7.2%

Friday, 23 January 2015

Despite costing from N$170,000 upwards, BMW motorcycles said 2014 was the company’s most successful year in their almo...

Readmore

Hino delivers at Dakar Rallyv

Hino delivers at Dakar Rallyv

Friday, 23 January 2015

There was pure elation in Buenos Aires after the finish of Stage 13, final stage of the 2015 Dakar, when South Africa’...

Readmore

Simonis Storm launches Namibian Bond Index Series

Simonis Storm launches Namibian Bond Index Series

Friday, 23 January 2015

Local stock-broking firm Simonis Storm Securities (SSS) kicked off the calender year by launching its Government Bond In...

Readmore

Stock-broking firm optimistic about growth

Friday, 23 January 2015

Simonis Storm Securities (SSS) is upbeat about the economic outlook for 2015. Resident economist, Daniel Kavishe at SSS ...

Readmore

Teutons shiver as ECB lets lose a liquidity tsunami

Friday, 23 January 2015

Throughout this year, the verdict on the Eurozone cardhouse will remain in the balance. If the European Central Bank’s...

Readmore

Stealing public goods is exactly the same as treason

Friday, 16 January 2015

Being a citizen of a functional democracy is a great privilege given the absence of this vital development ingredient in...

Readmore

Managing trolls and learning from critics on social networks

Managing trolls and learning from critics on social networks

Friday, 23 January 2015

Facebook provides an exceptional opportunity for learning about your brand, particularly what people believe about it, w...

Readmore

Offbeat 23 January 2015

Offbeat 23 January 2015

Friday, 23 January 2015

Nowadays there is plenty of opportunity to watch a move: DVDs, DVD rentals and even whole movies on Youtube, though not ...

Readmore

Hannah for Life saves infant lives

Hannah for Life saves infant lives

Friday, 23 January 2015

“Whether you are a corporate giant, a small business or just you, what you give to others matters” said Natasja Beyl...

Readmore

A citizen who makes a difference

A citizen who makes a difference

Friday, 23 January 2015

Marbeline Mwashekele, Deputy Director of Information and Research in the Ministry of Foreign Affairs established a non-p...

Readmore

Impacts of the tariffs on the healthcare sector

Friday, 23 January 2015

During a raging debate between the Namibian Association of Medical Aid Funds (NAMAF) and Namibia Private Practitioners F...

Readmore

Bafana of Bafunny

Bafana of Bafunny

Friday, 23 January 2015

Beaming at the prospect of watching South African national team Bafana Bafana take part in this year’s edition of the ...

Readmore

Get set for Song Night 2015

Get set for Song Night 2015

Friday, 23 January 2015

This year, Lize Ehlers, the founder of Song Night, is not only looking to provide a platform for artists, but is lobbyin...

Readmore

Seventh Son-Film Review

Seventh Son-Film Review

Friday, 23 January 2015

When the darkness falls the son will rise is what best describes the Seventh Son, a medieval fantasy that tells the stor...

Readmore

Final Bidvest Cup edition launched

Final Bidvest Cup edition launched

Friday, 23 January 2015

Bidvest Namibia will continue for the third and last time its contribution to the national league as the period of spons...

Readmore

Eagles taste first defeat

Eagles taste first defeat

Friday, 23 January 2015

After an impressive winning streak at the underway Pepsi-ICC Cricket League division 2, Namibia’s Eagles tasted their ...

Readmore

Weather 23 January 2015

Weather 23 January 2015

Friday, 23 January 2015

What Happened
With the Kaiser’s birthday on Tuesday, folklore has it the rain season only starts now. There may be more...

Readmore

Weather 16 January 2015

Weather 16 January 2015

Friday, 16 January 2015

What Happened
The excessive heat of the holidays has abated somewhat creating space for the zonal airflow across the sub-...

Readmore

NACOMA and NADEET recycle

NACOMA and NADEET recycle

Friday, 23 January 2015

The Recycle Namibia Forum this week welcomed three new associate members to its growing list of companies and organisati...

Readmore

Hadedas invade the Kwando

Hadedas invade the Kwando

Friday, 23 January 2015

The Hadeda ibis, that large, noisy, raucous bird that is the bane of gardens in Gauteng, has recently been confirmed as ...

Readmore

Rehoboth chickens run wild on council funding

Rehoboth chickens run wild on council funding

Friday, 23 January 2015

Eric Campbell, a veteran local farmer at Oumamas, a small settlement situated in the Rehoboth district in the Hardap Reg...

Readmore

No certified beef exports to the Philippines

Friday, 16 January 2015

The Ministry of Agriculture said this week that the Foot and Mouth outbreak in the Zambezi Region and Mukwe constituency...

Readmore

Business school takes registration to the people

Business school takes registration to the people

Friday, 23 January 2015

The Southern Business School (SBS) Namibia will bring registration and access to tertiary education to prospective stude...

Readmore

St Boniface College delivers again

St Boniface College delivers again

Friday, 16 January 2015

Alfons Kudumo, a pupil from St Boniface College is the country’s number one ranked pupil of the 2014 Grade 12 Namibia ...

Readmore

The importance and necessities of airport taxes

The importance and necessities of airport taxes

Friday, 23 January 2015

“More often than not we hear people say that flights are not that expensive but the airport taxes are. They also expre...

Readmore

Lesbian and Gay tourism joins WTM Africa

Friday, 23 January 2015

The International Gay & Lesbian Travel Association (IGLTA) recently signed an agreement to become an association par...

Readmore

After one year it is too late

After one year it is too late

Friday, 23 January 2015

Despite positive gains, many children still face enormous inequality. Poverty affects 34% of all children, while one in ...

Readmore

Take a break to  take the lead

Take a break to take the lead

Friday, 23 January 2015

Back to Business is the reality of every new year but Juanita Slinger, First National Bank’s Wellness Coordinator, las...

Readmore

Wolfshag resource much higher than inferred

Friday, 23 January 2015

B2Gold recently announced a significantly higher grade updated gold mineral resource estimate for the Wolfshag zone, loc...

Readmore

NamPower avails surplus energy to struggling neighbours

Friday, 23 January 2015

Power utility company, NamPower following part of an annual Surplus Sales Agreement which is in place with both Eskom an...

Readmore

Retail Charter penciled

Friday, 23 January 2015

The retail Charter is gaining momentum as Task Teams have started to meet with dates penciled in getting the Retail Char...

Readmore

Rhodes acquires Pacmar, sets sights on SSA

Friday, 09 January 2015

The recent acquisition of Pacmar by the Rhodes Food Group is intent on its part of further expansion into Sub-Saharan Af...

Readmore

NUNW - workers must be treated fairly

NUNW - workers must be treated fairly

Friday, 23 January 2015

The National Union of Namibian Workers(NUNW) held its first press conference for the year on Wednesday, where it highlig...

Readmore

General Services fight not to be classified: Essential

General Services fight not to be classified: Essential

Friday, 23 January 2015

An investigation facilitated by the Essential Services Committee, a standing committee of the Labour Advisory Council, h...

Readmore