Temperatures have been on the rise since our unseasonably cool weather on Monday and Tuesday and will continue to rise Saturday and Sunday.
A ridge of high pressure starts to build in from the west and surface high pressure slides off the mid-Atlantic coast. We are a little concerned for a shower or thunderstorm along an instability axis in the northwest flow aloft up toward southeastern Pennsylvania and northeast Maryland later Saturday afternoon and evening up there, but we should remain protected by high pressure and the building heights.
A hot and even more humid day Sunday with plenty of sunshine. Again, any chance for an afternoon thunderstorm should stay up on the northeastern fringe of our viewing area. Monday should be a mostly dry day as the upper level ridge to the west slides eastward, but we are thinking with more clouds and a southeast flow, temperatures will not be quite as high, but it will remain humid.
A southerly flow will be sending moisture feeding up from the feature now spinning over Louisiana as it drifts eastward Tuesday. This should result in a shower or thunderstorm at least in the area Tuesday afternoon.Then with this moisture in place and a slowly moving front coming in from the west Wednesday, we have the good chance for showers and thunderstorms Tuesday night and Wednesday.
There may be some heavy rainfall too. Some questions remain as to whether this feature clears the area by Thursday, but it should by Friday. No big cool push behind this front late next week.