This number could save your life: How SAWS’s weather warnings really work
· The South African
SAWS warning colour levels combine colour and number. Here’s how to read yellow, orange and red alerts.
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Why SAWS moved away from just predicting weather
South Africa’s weather warnings can look confusing at first glance, an Orange Level 6 one day, a Yellow Level 2 the next. SAWS’s colour levels for weather warnings aren’t random.
They’re built on what’s called the Impact-Based Severe Weather Warning System, designed to tell you not just what the weather will be, but what it will actually do to roads, homes and safety.
What the colours mean
Green signals minimal impact. Yellow covers minor to significant impact.
Orange points to significant to severe impact, and red is reserved for the most severe, dangerous events SAWS tracks.
Why there’s also a number
Alongside the colour, SAWS attaches a number from 1 to 10. That number reflects how likely the event is to actually happen, not how severe it is.
A Yellow Level 4 warning, for instance, might carry the same potential impact as an Orange Level 5, but the orange warning reflects a higher likelihood of it occurring.
As one SAWS forecaster explained it, a Red Level 10 means a dangerous event is very likely, while a Yellow Level 3 flags the same seriousness but at a much lower chance.
A recent example: this week’s warnings
This week gave a clear real-world example. On Wednesday, SAWS issued an Orange Level 6 warning for disruptive rain and an Orange Level 5 warning for disruptive snow across the Eastern Cape and KwaZulu-Natal, its most serious warnings of the season so far.
By Thursday, that had eased to a single Yellow Level 2 warning for coastal wind and waves, showing exactly how quickly the picture can shift from one day to the next.
Acting on SAWS warning colour levels
Understanding SAWS warning colour levels means treating orange and red warnings as a signal to change your plans, not just watch the sky. Avoid unnecessary travel through affected areas.
Rely on SAWS and official disaster management updates instead. Unverified warnings circulating on social media often exaggerate the real alerts.
I have to admit, I didn’t fully understand the number system myself until digging into it, and it’s made me take these warnings a lot more seriously.
Did you know what the colours and numbers actually meant before reading this?
Let us know in the comments below, Mzansi…