A blocked pattern has kept a deep ocean low pressure system affecting our weather to our east for several days. The same blocking has kept an even more robust low pressure system in the upper Midwest.
The ocean low pressure system will gradually progress eastward, allowing much of Saturday to have considerable sunshine before clouds move in again later in the afternoon. High 68.
The second system in the Midwest will slowly progress eastward and an upper air disturbance rotating around this system will move into our area on Sunday. Sunday will be mostly cloudy and several runs of the GFS have shown a chance of showers Sunday afternoon. High 67.
High pressure will build in to our north Friday and an easterly flow will bring cool temperatures and a significant amount of cloudiness on Friday.
Even more cloudiness is expected on Saturday as the high pressure system moves off to our east and the winds become southeasterly ahead of a warm front. Some showers, widely scattered, are possible on Saturday as well, although much of the area will be dry.
A weak cold front moves in later Saturday and Saturday night with some showers. Another high pressure system moves in for Sunday bringing more sunshine, although there are model differences about the amount of clearing we get on Sunday.
Complicating the forecast is another tropical system that may form near Florida over the weekend and follow a track somewhat similar to Dorian. This system is not expected to intensify anywhere near the level of Dorian. The model forecast reliability often seems to be negatively impacted by a tropical system in the area. Stay tuned.
