Saturday, Feb 28th

Last updateFri, 27 Feb 2015 11am

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

MTC 3rd most expensive operator

A report released by The Research ICT Africa Network has found that Namibian cellphone subscribers pay nine times more t...

Stronger balance sheet in trying times

Eco Atlantic Oil & Gas has managed to strengthen its balance sheet against a background of depressed oil prices. Mor...

Ask the right questions

Ask the right questions

The Economist Businesswoman Club held their first networking breakfast of the year on 20 February  at the Thuringer...

Pointbreak increases stake in Ebank

Pointbreak, a Namibian Investment Management Company and co-founding shareholder of EBank, announced that it acquired 38...

NBC ahead of digital schedule

NBC ahead of digital schedule

The Namibian Broadcasting Corporation (NBC) and SME Bank LTD announced this week the two organisations have entered into...

Changing attitudes one dance at a time

Changing attitudes one dance at a time

The Goethe Centre was host this week to this delightful bunch when the dance troupe of the Ombetja Yehinga Organisation ...

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
What happened? The formulation of the polar front into a vortex with warm and cold air boundaries taking on a frontal character identified the...
Weather
What happened? In daily weather terms, summer means an ability for moister air to penetrate into both upper air and lower level circulation, coupling...
02 May 2014 (958 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? For some months Namibia has been on the borders of or alongside a wide range of weather events of which only the fringes have...
Weather
What happened? At the best of times, weather charts exhibit considerable complexity. Not only do they cover geograpic areas, the are drawn for...
Weather
What happened? Autumn’s equinox has gone, but the remaining vestiges of La Nina’s presence is still the dominant feature of global weather....
Weather
What happened? Even at the best of times, the mix between the end of autumn and the full exposure to winter brings out clashes between the dying...
04 April 2014 (530 hits)
Weather
What Happened? A seasonal anomaly, very visible on sea-surface-temperature maps, is the large variance in temperature over the south-western Indian...
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
Weather
RAINFALL FIGURES
Headlines
Launched at the end of 2009, Galz & Goals is the first national project to entice young females into competitive soccer to provide a feeder pool...
Headlines
Only a third of the country’s total cereal demand will be met from local production due to poor rainfall in the dryland maize production triangle...
Headlines
A report released by The Research ICT Africa Network has found that Namibian cellphone subscribers pay nine times more than their Kenyan counterparts...
Weather
What Happened The combination of low pressure and unstable, tropical air produced some spectacular rainfall results this week, showing just what is...
NMC Construction gears up for further growth

NMC Construction gears up for further growth

Friday, 27 February 2015

Windhoek based NMC Construction Namibia, a member of the privately owned NMC Construction Group announced changes to its...

Readmore

Walvis Airport upgrade progressing well

Friday, 27 February 2015

The rehabilitation and upgrading of the Walvis Bay Airport is progressing well, according to the Acting Strategic Execut...

Readmore

Namib Mills

Namib Mills

Friday, 27 February 2015

As Namibia’s foremost grain processor, Namib Mills has grown in leaps and bounds since its establishment in 1982. It c...

Readmore

Fresh and frozen chicken  for local gourmet

Fresh and frozen chicken for local gourmet

Friday, 27 February 2015

Namib Poultry Industries says that consumers are likely to switch to poultry as a result of the severe drought. Namibia...

Readmore

Year of the Goat sees growing investments

Year of the Goat sees growing investments

Friday, 27 February 2015

The local Chinese community had ample support from one of their stakeholders that helped them transition smoothly into t...

Readmore

Black South Africans hold 23% of JSE top 100

Friday, 27 February 2015

As at end 2013, black South Africans held at least 23% of the Top 100 companies listed on the Johannesburg Stock Exchang...

Readmore

Abundance for all. Not if, but how?

Friday, 27 February 2015

Analysts working only on the United States economy are pointing out that while the unemployment rate has receded to with...

Readmore

Explosive agriculture to the North, but what about the South

Friday, 20 February 2015

If the Northern Communal Areas carry twice as much cattle as the commercial farms, then a simple process of deduction le...

Readmore

Believe it is possible

Believe it is possible

Friday, 27 February 2015

The focus of this column over the last few weeks has been to motivate organisations and individuals to start taking acti...

Readmore

offbeat 27 February 2015

offbeat 27 February 2015

Friday, 27 February 2015

Working in an office can be wonderful, especially if you work near someone who you like, or you are fond of, or who inte...

Readmore

Brilliant direction through a colourful maze

Brilliant direction through a colourful maze

Friday, 27 February 2015

Local artist Kirsten Wechslberger is on a special mission to force ordinary people to use all their senses to appreciate...

Readmore

Dancing for peace  and tolerance

Dancing for peace and tolerance

Friday, 27 February 2015

Dance, as an expression of emotion, makes the world a better place, and for this reason, a local bank has decided to sup...

Readmore

Saying goodbye to relationships for now

Saying goodbye to relationships for now

Friday, 27 February 2015

I have decided to take a break from relationships. I am not totally giving up on love just taking a break. Relationships...

Readmore

Challenging the elephant in the room

Challenging the elephant in the room

Friday, 20 February 2015

Joe Soap has taken an unprecedented move and will in the near future challenge South African energy utility Eskom’s mo...

Readmore

Fifty Shades of Grey-Film Review

Fifty Shades of Grey-Film Review

Friday, 27 February 2015

So the long-awaited film based on the erotic novel by British author E.L James, set readers’ tongues wagging again whe...

Readmore

Aussie Eyes on Africa

Aussie Eyes on Africa

Friday, 27 February 2015

Ineke van den Hout, a South Australian artist will exhibit her visual diary of her adventures, experiences and impressio...

Readmore

Hefty boost for the Welwitschias

Hefty boost for the Welwitschias

Friday, 27 February 2015

The Namibia Rugby Union got a timely boost last week when FNB Namibia handed over a sponsorship of N$1,750,000 to enable...

Readmore

Goal fest expected at talent tourney

Friday, 27 February 2015

Local women football powerhouses Galz & Goals, Poly Babes, 21 Brigade United and JS Academy booked their places in t...

Readmore

Weather 27 February 2015

Weather 27 February 2015

Friday, 27 February 2015

RAINFALL FIGURES

Readmore

Weather 27 February 2015

Weather 27 February 2015

Friday, 27 February 2015

What Happened
The combination of low pressure and unstable, tropical air produced some spectacular rainfall results this ...

Readmore

Biodiversity preservation vital

Friday, 27 February 2015

According to the Minister of Environment and Tourism Hon. Uahekua Herunga, the tourism sector definitely needs to stream...

Readmore

Understanding the dynamics  of rabies in kudu populations

Understanding the dynamics of rabies in kudu populations

Friday, 27 February 2015

When a group of MSc students at the University of Pretoria’s wildlife management unit under their tutor, Prof Wouter v...

Readmore

Agra’s social obligation

Agra’s social obligation

Friday, 27 February 2015

Agra published their eighth annual social report which shows their support to various organisations and initiatives aimi...

Readmore

Maize meal price increase

Friday, 27 February 2015

Namib Mills hereby announces that due to a severe drought causing a drastic drop in crop expectations, the company will ...

Readmore

Nipam partnership brings professional  status to internal auditors

Nipam partnership brings professional status to internal auditors

Friday, 27 February 2015

This week, the Namibia Institute of Public Administration (NIPAM) entered into a partnership agreement with the Institut...

Readmore

Poly lobbies for cooperative education

Friday, 20 February 2015

The president at the Institute of People Management (IPM) and Cooperative Education Unit (CEU) patron Tim Ekandjo advise...

Readmore

Another tourism route in the pipeline

Friday, 27 February 2015

The Namibia Tourism Board: Head of Industry Service, Bonnie Mbidzo revealed to the Economist that  another tourism ...

Readmore

Palm Route

Palm Route

Friday, 20 February 2015

The new tourist destination of Omulunga Palm Route, in the far northern regions stretching from Kunene Region through Om...

Readmore

Special factor 50 protects albinos against radiation

Special factor 50 protects albinos against radiation

Friday, 20 February 2015

“Support in Namibia of Albinism Sufferers Requiring Assistance” or better known under its acronym, SINASRA, last wee...

Readmore

Cow poo proof

Cow poo proof

Friday, 13 February 2015

The well-known animal medicine shop, Auas Vet Med, donated overalls to the second year class of veterinary students at t...

Readmore

Bannerman demo plant completion set for March

Friday, 27 February 2015

Bannerman Resources, the Australian company driving one of four new uranium projects in Namibia this week reported that ...

Readmore

Ohorongo passes export audit

Ohorongo passes export audit

Friday, 27 February 2015

Ohorongo Cement passed an important audit early in February to qualify as exporter to another SADC country. The cement m...

Readmore

Local products carry NDP4

Local products carry NDP4

Friday, 20 February 2015

Despite higher prices of local products as compared to foreign products on the shelves, O&L Namibia and Team Namibia...

Readmore

New kiosks sprout  at Hosea Kutako

New kiosks sprout at Hosea Kutako

Friday, 13 February 2015

Namibia Airports Company announced last week the addition of five new kiosks at the Hosea Kutako International airport, ...

Readmore

No formal discussions to mitigate retrenchment - TransNamib

Friday, 20 February 2015

Executive spokesperson at TransNamib Holdings, Struggle Ihuhua, said that there has been no formal discussions or propos...

Readmore

AREVA seals wage deal

AREVA seals wage deal

Friday, 20 February 2015

AREVA Resources Namibia Management and the representatives of the Mine Workers Union of aNamibia (MUN) concluded the ann...

Readmore