Snippet from Mount Holly discussing the pattern evolution and the chances for (heavier) rain for the period beyond the next few days-
The flow throughout much of the atmosphere will become well-aligned from the south, and remain that way for much of the long term forecast period. Cut- off low pressure over the Southeast US will only slowly lift northward toward the Great Lakes, then drift eastward across our region over the weekend. Meanwhile, longer range model guidance is tentatively in good agreement of another fairly strong upper-level trough ejecting eastward from the northern Rockies toward the Great Lakes early next week. That system may amplify as it settles into the long wave trough set up along the East Coast, reinforcing warm, moist southerly flow across our region. The airmass from Friday through the weekend looks quite convective, and showers/t-storms will tend to be enhanced with daytime heating, particularly if there is any sunshine. While it will not rain all the time, and any one day through this period does not look anomalously moist for June, the pattern will be capable of producing heavy rain, particularly with any training convection or when the flow aloft weakens. Despite the drought in some parts of our region, flooding may become an issue particularly next week if this pattern comes to fruition and the ground becomes more saturated.