Rapid cyclogenesis in action!

Figure 1

Low Carola is deepening very quickly at the moment, and the curl of cloud she is spinning up makes an impressive site in the latest satellite imagery to the southwest of Ireland (fig 1), as do the plotted observations and barograph from the weather buoy 62029 better known as ‘K1’ (figs 2 & 3).

Figure 2

As far as I can see Carola easily breaks the barrier for rapid cyclogenesis of 24 hPa in 24 hours, the pressure there has fallen by 37.4 hPa in 12 hours, in fact I don’t think I have ever seen sustained pressure falls like that on a chart from an extra tropical low.

Figure 3

No doubt the French will have claimed this low and come up with their own name for it, but I noticed it didn’t even get a mention in the BBC forecast at 12.58 pm from Sarah Keith-Lucas.