|An angry Lake Pontchartrain spills onto Lakeshore Drive in eastern New Orleans on Tuesday. (Photo from USA Today.com)|
It is way too early to tell if Isaac will impact the weather in southern Ontario and Quebec this weekend. For the time being high pressure will dominate with chilly nights and warm, sunny days. It was quite cool this morning with Montreal dropping to 11C (52F) and Ottawa a cold 6C (43F). The broad circulation around high pressure off the east coast and Isaac will actually pump warm and humid air into the region by Friday with highs near 30C.