South African Weather Warnings and Severe Weather
The South African Weather Service (SAWS) is the only authoritative source for official weather warnings in South Africa. Its system is colour-coded and impact-based, which means the colour describes the expected consequences, not simply the amount of rain or the wind speed.
The colour scale
- Yellow — be aware. Disruptive weather is possible. Localised flooding of roads, difficult driving conditions.
- Orange — be prepared. Significant impacts are likely. Serious flooding, structural damage, dangerous seas.
- Red — take action. Severe impacts are expected. Life-threatening conditions; follow instructions from disaster management.
Warnings also carry a level from 1 to 10, combining likelihood with severity, and a defined validity window and geographic area. A warning that has expired has expired — check the timestamp before acting on a forwarded screenshot.
The hazards that matter here
Summer thunderstorms on the Highveld arrive fast in the late afternoon, bringing hail and flash flooding of low-lying roads. Cut-off lows are the systems behind South Africa's most damaging floods, and they can sit over a region for days. Winter cold fronts in the Western Cape bring gale-force winds and heavy coastal rain. Berg winds ahead of a front raise fire danger sharply along the southern and eastern coasts. And heatwaves, defined against the local average rather than an absolute temperature, carry real health risk in areas that are not equipped for them.
Practical response
The rule that saves the most lives is the simplest: never drive into moving water across a road. Depth is impossible to judge from a vehicle, and the road surface underneath may already be gone. During thunderstorms, unplug sensitive electronics — surge damage is the most common insurance claim after a Highveld storm. In flood-prone areas, know your route to higher ground before you need it.
Where to verify
Official warnings come from SAWS and are amplified by provincial and municipal disaster management centres. Screenshots circulating on WhatsApp are frequently out of date, from another country, or fabricated. Check the source and the validity window before acting or forwarding.
Common questions
What do yellow, orange and red warnings mean?
Yellow means be aware — disruptive weather is possible. Orange means be prepared — significant impacts are likely, such as serious flooding or structural damage. Red means take action — severe, potentially life-threatening conditions, and you should follow disaster management instructions.
Who issues official weather warnings in South Africa?
The South African Weather Service. It is the only authoritative source. Provincial and municipal disaster management centres amplify those warnings; they do not issue their own.
Why does a warning have an expiry time?
Because warnings are issued for a defined period and geographic area. A screenshot circulating on WhatsApp is frequently out of date, from another country, or fabricated — check the validity window and the source before acting on it or forwarding it.
What is the single most important thing to do in heavy rain?
Never drive into moving water across a road. Depth is impossible to judge from a vehicle and the road surface underneath may already have washed away. This is the advice that saves the most lives, every season.
Live coverage
Below, current weather and severe weather headlines from South African and international sources.
