After a break from the high humidity into Friday, the risk of spotty thunderstorms will return to the Pittsburgh area this weekend.
A push of air from Ontario and the upper Great Lakes will shave temperatures and humidity levels a bit into Friday. The reduction in humidity will translate to little or no popup shower activity.
However, as the flow swings around to the south and southeast over the weekend humidity levels will creep back up. Strong sunshine and higher moisture levels will lead to an increased risk if showers and thunderstorms this weekend, especially during the afternoon and evening hours.
Warmth will build during the first part of next week, before cooler air moves in over the Independence Day weekend.
Both the transition to warm and humid conditions and then to cooler weather could be accompanied by severe thunderstorms. The details will unfold over the next few days.
After a period of above-average temperatures across most of the Midwest and Northeast last week, a complete reversal in the weather pattern will move in this week.
A new round of thunderstorms will bring the risk of severe weather across parts of central Texas and Oklahoma to the lower Mississippi Valley on Wednesday.
Due to the positive feedback, the National Weather Service has expanded their former, experimental Impact Based Warnings to include the Southern region for the spring of 2015.
As residents are far from over with the recent cold winter across the Great Lakes, Mother Nature will bring the return of snowflakes to the region this week.
Global warming and climate change, two terms that are treated synonymously in most media coverage and casual debate, have been shown to spark different reactions from the American public.
Following strong to locally severe thunderstorms in part of the South Central states at midweek, the risk of violent storms will increase over the region on Friday.
Lander, WY (1963)
20" snow; many livestock perished.
Havre, MT (1967)
17" of snow.
Midland, TX (1989)
101 degrees -- first 100 degree or higher reading in April since 1930.