Answers on a postcard please

Figure 1

The two vortices (or should that be the two vortexes) in this mornings 09 UTC visible satellite image caught my eye (fig 1), because funnily enough they do resemble a pair of eyes. I can see that the one to the southwest of Ireland is connected to the surface low (Gabi) which looks to have a minimum central pressure of around 982 hPa (fig 2).

Figure 2

The more prominent of the two which is sat in the Celtic sea has me stumped though. You would have thought that it was connected to some upper level feature because the clouds spiralling around it look a lot thicker extending to medium or upper levels, but it’s certainly not at the 700 hPa level (fig 3). Answers on a postcard please to the usual address.

Figure 3 – Courtesy of weatheronline.co.uk

Author: xmetman

An ex-metman passionate about all things to do with weather, climate and clouds

One thought on “Answers on a postcard please”

  1. Good spot. The surface winds in your analysis certainly aren’t reflected in the MSLP pattern. Looks like the upper trough which moved up over the Bay of Biscay to the SW approaches had at least two lobes of vorticity (c.f. WV imagery), but global models analysed it as one, and emphasised the development of what is Gabi, missing the Celtic Sea circulation. On WXCHARTS it looks like the Arome model analysed it correctly, so I imagine the UKV did too.

    Interestingly the existence of the Celtic Sea circulation has lead to the rain bands over England and Wales being much more broken up than the global models suggested would be the case. Rainfall levels appear to be down on what was forecast.