Weather forecasts are looking less than ideal for Memorial Day parades and picnics in the Triangle as the chance of thunderstorms increases.
The forecast from the National Weather Service’s Raleigh office showed the chance of thunderstorms growing from 20 percent on Saturday to 50 percent on Monday.
A Bermuda high that has been providing sunny days was expected to move out after two more bright days Thursday and Friday.
North Carolina issued a code orange alert for high ozone levels Thursday. High levels of ozone can affect people susceptible to breathing problems.
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High temperatures then were forecast to be in the upper 80s. Daytime readings should slide to the low 80s by Monday.
Forecasters at the National Hurricane Center in Miami were watching a low-pressure system that was sitting a few hundred miles northeast of Bermuda.
They estimated Wednesday night that there was a 60 percent chance of that system becoming a cyclone, which means a low-pressure system with organized, large-scale wind circulation around it, by early next week. It was expected to head for the U.S. coast.
It was too soon to say if that system could grow into a storm.