Search

You may also like

Articles Local News

Cape Town Storm – 26 October

You may have read media reports about a hurricane which hit the Western Cape in the early hours of Monday morning, the 26 October. These reports are extremely incorrect, to put it simply.. Cape Town does not have the sea temperatures to support a hurricane and never will (unless SSTs increase by 5 degrees of the peak).…

Articles Local News

Snow Throughout South Africa

As the final cold front exits the country the Western Cape is cleaning up the damage caused from large swells, heavy rains and strong winds. Though the rough seas and the rainfall was the primary focus in the Western Cape, along the Southern Cape Coast the winds were more of a concern with extremely strong wind gusts measured.…

Articles Local News

Glossary of Terms

Beaufort Scale The Beaufort scale is used to estimate wind damage in the same way tornadoes winds are mostly measured, by assessing the damage present. Wind speed (km/h) Designation Description < 2                            calm                          smoke rises vertically, trees do not move 2-5                             light air                      smoke drift indicates wind direction 6-11                           light breeze                weather vane moves, leaves rustle 12-19                         gentle breeze              leaves and twigs in constant motion 20-29                         moderate breeze         dust and loose paper raised, small branches move 30-38                         fresh breeze               small trees sway 39-50                         strong breeze             large branches move, wind whistles wires 51-61                         moderate gale           whole trees move, walking affected 62-74                         fresh gale                  twigs brake of trees, walking difficult 75-86                         strong gale                slight structural damage occurs, branches break 87-100                       whole gale                 trees uprooted, considerable structural damage 101-118                     storm                        widespread damage 119+                         hurricane                   severe and extensive damage Bow Echo A bow echo is another possible tornado signiture which can sometimes form along a squall line.…

Local News

0 Views
Articles Local News

Another Stormy Weekend

28 May 2009 Update The latest GFS model run (18z, 27 May 2009) is showing slightly less rainfall than previous runs for the Western Cape, though larger amounts for the southern coastal areas of the Eastern Cape. The main aspects continue to be that of the extremely cold temperatures likely to be felt over the weekend.…

0 Views
Articles Local News

21 May 2009 – Cape Town Thunderstorm

Cape Town got an unexpected dose of thunderstorm activity on the 21 May 2009, when a trough which was situated along the West Coast seemed to close into a coastal low pressure around Cape Town. This caused some upper air instability which coupled with the moisture present was enough to produce some unforecast thundershowers.…

0 Views
Articles Local News

Latest on Weekend Storm

Latest model guidance is showing what could be a very rough ride for residents of both the Western Cape and areas of the Eastern Cape this coming weekend. Rainfall estimates have shot up for Saturday around Cape Town, Boland, Winelands and areas of the Overberg.…

0 Views
Articles Local News

Rough Seas and Gale Force Winds

Model data continues with the depiction of a weekend of rough weather for parts of both the Western and Eastern Cape. Latest guidance is showing wind speeds reaching up to 40 knots at Cape Point, while remaining around 25-30 knots for Cape Town City and most other southern parts of the Western Cape.…

0 Views
Articles Local News

Series of Rain, Cold and Wind for Western Cape

Update    Latest GFS model guidence as well as EURO (ECMWF) guidence is showing the possibility of some very extreme weather for maritime travellers off to the south of South Africa. The EURO is showing wind speeds in excess of 90km/h. This would make sense given the latest intensity of the low pressure system which appears to be deepening to around 930hpa. …

0 Views
Articles Local News

Supercell near Durban

South African storm chaser Mungo Poore managed to spot this well defined hook echo on the Durban radar on the 6th of May 2009. There were no confirmed reports of tornadoes or funnel clouds at the time of writing this article but hook echoes are the tell tail signs for possible tornado development.…

0 Views
Articles Local News

Strong Storms in Eastern Cape

Around 16:30 today, 5 May 2009 there were a series of strong thunderstorms visible on the 50km East London radar which peaked at around 60 dBz which usually indicates extremely heavy rain or hail. These storms were originally heading south east before changing direction and heading north east for a while just to the north west of East London.…

0 Views
Articles Local News

Thundershowers for Northern South Africa

A low pressure system is currently situated around the North West province which has been pulling moisture down from the north into areas such as Gauteng, Limpopo, Mpumalanga, North West Province and part of the Free State. This set up will allow for showers and thundershowers with fairly decent rainfall totals of near 10mm per 24 hours for many parts.…

0 Views
Articles Local News

Winter Weather To Begin

After a fairly dry summer it seems as though winter is knocking on the door, there have been a few weak fronts pushing through as well as a cut-off low during the second last week of April. This system brought some thundershowers to the Western Cape and Eastern Cape regions with several squall lines developing.…

0 Views
Articles Local News

16/17 April 2009 – Cape Town Mammatus Event

On the morning of the 16th April 2009 a sharp trough situated to the North West of Cape Town was resulting in some unstable weather with a risk of thundershowers in the area. At 08:15 it was noted on the Cape Town Webcam that a small amount of mammatus were evident near Table Mountain, during the next 15 minutes the mammatus clouds started developing rapidly along the edge of the passing cloud band.…

Skip to toolbar