Below is the latest satellite image provided by the South African Weather Service- showing a well developed cold front passing over the Western Cape today the 4 August 2009. Along with this cold front the SAWS has issued the following warnings:

National Warning - Issued on Tuesday, 4 August 2009 at 15.00

Very rough seas with wave heights in excess of 5m are expected between Lamberts Bay and Plettenberg Bay spreading to Port Alfred overnight persisting through to Thursday.
Very cold conditions are expected over the western highground of the Western and Northern Cape Province.

This past weekend I was in Johannesburg and witnessed some of the extremely cold temperatures that occued on the Saturday. At Johannesburg airport the temperature was 4`C at 4pm and 3'C when I landed at 6. There were confirmed reports of hail as a very strong squall line passed through the area. You can view the radar image of the squall line in the forums as Gordon Richardson managed to capture an image while the squall was in full force.

GFS model is also showing a possible strong system near the latter part of it's run- which I will be monitoring for consistency.