A zone of very drenching rain will push slowly eastward across into Thursday night across the Pittsburgh area.
The rainfall has the potential to bring flash, urban and small stream flooding, especially to areas around and north and east of the city through the Laurel Highlands.
Much cooler air will be felt beginning late Thursday night as a front pushes off to the east.
The passage of this front will mark the end of the risk of severe weather and flash flood threat, but not the end for shower activity through the weekend.
A storm in the upper atmosphere and the associated chilly air will allow a mosaic of showers to develop each day Friday through Monday.
While it may not rain much each day, it can rain just enough to cause disruptions to outdoor projects and activities.
Cloud cover and a breeze should prevent temperatures from dipping to frosty levels in the upcoming pattern.
A warmer weather pattern is forecast for much of the Central and Eastern states, while temperatures should throttle back in the Northwest during the middle of August.
Japan and South Korea face tropical floods into this weekend; the danger of a typhoon looms for next week.
An increase in moisture from the Southwest monsoon will fuel showers and heavy thunderstorms across the interior West through the weekend.
“Sharknado” fans who live in fear of a shark-filled tornado can rest easy, the idea still remains completely implausible. However, the weather has been known to cause several head-scratching events, ranging from seemingly apocalyptic to downright bizarre.
Days of sunshine and mild weather will remain in the Dallas area into next week.
We asked our fans what worries them most about the beach in the summer. Here are the results.
A 140-150 mph downburst swept across Andrews Air Force Base less than 10 minutes after Air Force One had landed (President Reagan was on board).
Texas Coast (1989)
Tropical Storm Chantal came onshore at High Island, Texas, 30 miles NE of Galveston. Winds gusted to 70-80 mph and 6-12" of rain fell.
Hurricane Erin just off the east coast with 85 mph sustained winds.