Now that Roanoke has its first 90-degree high of 2012 — coming after the National Weather Service’s 5 p.m. climate statement on Tuesday — it may waste no time going all the way into the mid 90s the next couple of days (Wednesday and Thursday) as the core of the hot high-pressure dome builds overhead. Even Blacksburg may push 90 degrees — which would tie a record high for June 20. (Roanoke’s highs the next two days are 101, which very likely will not be challenged). You can never rule out a few afternoon storms with this kind of heat, but underneath the stagnant to sinking air of this high pressure dome, afternoon convection will be more limited than we’ve seen the first couple of days this week. Storm chances will pick up by Friday as a cold front nears the region. Forecast models are now leaning more toward a jet stream trough digging southward by early next week, which would temper the heat considerably. Still some uncertainty at that range, but for now, it looks more like the original idea of a 2- or 3-day hot spell rather than a prolonged heat wave, at least for our region.