That ECM chart doesn't show -10 uppers, only around -6 to -7°C. The -10°C isotherm is the start of the 2nd shade of blue (north and southwest of Iceland).
There are still issues to be resolved with the setup upstream. The polar vortex moves into northeastern Canada as a rex block sets up in the western US. I think it'll be more like the end of the week and next weekend before we see any decent winds, as the jet strengthens coming off the american continent the second half of the week, setting the scene for a more southerly storm track.