Jean Byrne on the late bulletin mentioned that they're keeping an eye on a depression that will pass by the northwest late Tuesday and deepen further as it crosses Scotland Wednesday.
Most of the models do show a low forming near the Azores during Monday as a cold plunge from Baffin Bay strengthens the southwesterly jetstream. The low travels northeastwards, strengthening as it does so, and passes to our northwest, en route to Scotland. There is a lot of variation in the models, and in fact the GEM shows no sign of such a system, instead building the Azores high over us instead. The ECMWF and BOM show the deepest system with the GFS and UKMO less intense. In any case, it is not yet at its deepest as it passes us, but it could bring some strong and possibly stormy winds to the northern half of the country as it deepens over Scotland. With its source near the Azores it will have abundant moisture, so could give decent rainfall depending on its exact track and speed.
Could of course be nothing, but it is something to tide us over in an otherwise quiet time weatherwise! Key factors influencing its evolution will be the extent of the cold plung from Baffin Bay and the exact development of the jet. All very sizeable factors in a data-sparse area, and we all know that these are what sent Joachim south a few weeks ago.