Friday’s weather will be similar to Thursday’s in Southwest Virginia — maybe a couple or three degrees warmer (Roanoke hit 83 Thursday, most locations were in mid-upper 70s) and a bit more humid as the winds starting turning more to the south. A little better chance of a pop-up shower or storm in the afternoon, especially along the Blue Ridge — beware of that FloydFest, you’re at the summit of the Blue Ridge. Overall, another nice late July day, before a stormier looking weekend.
What’s interesting about our weather over the next week or two is how many cold fronts we’re likely to see push through. We’re going to get flailed by them, atypically for late July/early August, starting with one over the weekend (shown at left where it’s expected to be by Monday). The fronts are being propelled by the rather fast (for mid-summer) northwest wind flow that has developed with a dipping trough in the East. Each front will trigger a chance of storms, some possibly strong or severe, followed by cooler and drier weather for a couple of days. The upper-air wind flow may turn a little more westerly than northwesterly by mid-to-late next week, but that will still be sufficient to bring a new front through every 2-3 days or so. It appears we are headed toward might be called an “unsettled” weather pattern, which means there will stormy/showery/rainy periods followed by a day or two of relative calm. It’s not like the early July pattern of prolonged tropical moisture and torrential downpours — there may be some in stronger storms, but repeat patterns of heavy rain and storms training over each other are not likely to develop.
Saturday and Sunday may hold some chance of severe storms for Southwest Virginia as a rather potent front pushes through.