Exclusively from Wx Centre: SWI

Posted by on Thursday, February 23, 2017


We are pleased to announce that we have developed a scale to better communicate severe weather threats. The severe weather index (SWI) is a scale from 0 to 10 that highlights the threat of severe weather.

Legend:
0-3 Severe weather not likely.
4-6 Severe weather possible.
7-8 Severe weather likely.
8+ Severe weather almost certain.

This scale will assist you in understanding the certainty of a forecast. Rather than saying that there is uncertainty in a storms track, we will tell you how likely you are to experience severe weather.

You can get the SWI daily at 
http://wxcentre.ca/swi.php.



The Team

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