Weather change alert with Node-red

[SkipperEarly]

Have the air pressure data shown in the dashboard but would like to implement in addition to showing the Barograph an amber or red warning based on the speed pressure change:
eg AMBER : meaning wind expectancy of bft 6-7
more than 1,3 hPa increase per 1 hr or >4hPa increase in 3 hrs 
or > 1hPa decrease per 1 hr or > 3hPa decrease in 3 hrs 

and RED : meaning wind expectancy of 8-12 bft
> 2hPa increase per hr or > 6hPa increase in 3 hrs
or > 2hPa decrease per 1 hr or > 6hPa decrease in 3 hrs

This seem to be reasonable values for European coast from what I discovered in the web.

Has anyone already implemented something similar in node-red or can advise how to do it

This is what I currently have:

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Thanks for sharing any enhancements!