Changes to the Weekend...
Brief ridging will occur in the wake of a cut-off low to our north tomorrow supplying us with sun and warmth...take advantage if you can because the weekend isn't looking as favorable.
The cut-off vortex may lift north but another shortwave will dive around the base of a longer wave trough that is entrenched over the Northeast. This will induce a weak area of low pressure to develop to our south on Saturday. Along with the proximity to the low we will also still have a pretty cool pocket of air above us...the two will lead to numerous showers and maybe even some shallow thunderstorms capable of gusty wind and small hail...kind of like today but more than just scattered. There will be pockets of sunshine but that heating will only fuel additional showers to develop.
Mother's Day has taken a turn for the worse too. The shortwave and weak surface low will not be able to get far. In fact, with downstream blocking (Negative NAO) the shortwave will evolve into a full-fledged cut-off drifting offshore. The surface low will strengthen and if it parks close enough to us we could be in for several cool and wet days. At the very least onshore flow will keep temps in the 50s and occasional showers will work in from the north and east.
