~Some of us can't complain about the cool, wet start so far this summer. Lawns are green, trees are healthy, and low cost energy bills thanks to cool nights and seasonable afternoons. But for beach goers and heat lovers, this hasn't been your summer so far. That is all about to change!
~A large and strengthening ridge of high pressure will expand eastward from the Great Lakes region and become established in the eastern United States this weekend into early next week. The jet stream, often the separation between warm and cool air masses will be weak and well to our north and west. Without any mid and upper level disturbances to keep the pattern rolling along, this will allow high pressure to build over the region and become well established. Temperatures will soar well into the 90s for more than just a few days. This will likely become our first official heat wave of the year.
Friday through early next week:
~Little to no chances for rain exist throughout this period as high pressure will keep any frontal disturbances well to our north and west. Friday temperatures will rise into the upper 80s and lower 90s. Our air-mass is still young and maturing, so humidity will be tolerable. Saturday, Sunday and into early next week high temperatures will be well into the low and middle 90s with dew points in the upper 60s and lower 70s. Cooler at the beaches with your afternoon sea-breezes. Dew points around or below 60 is comfortable, anything above is considered humid, especially once you get dews in the upper 60s and 70s. Heat index, or the "feels like" temperature will be around and just above the 100 degree mark throughout this period. As we get into Tuesday and the later part of next week, we will begin to see a slight relaxation in our temperatures as our ridge begins to weaken. Given that it will be July by this period, our average high temperatures are hottest. While the ridge will weaken, it will become strongest further west over the Great Lakes and northern plains. This will be enough to keep us hot and humid (upper 80s) through the end of next week. There are some signs that we may see temperatures become more seasonable with better chances for rain as we approach mid-month. This may be due to a trough developing in the eastern U.S. being forced by ridging further west across the high plains and northern Rockies.