Temperatures are expected to drop 45 degrees by Thursday night.
The National Weather Service in Moon Township has cancelled its severe thunderstorm watch for most of Western Pennsylvania, including Allegheny County. A flood advisory is in effect for the Ohio River at Pittsburgh. The river at the Point is forecast to rise above 18 feet by Thursday evening, which will flood the Monongahela parking wharf. The National Weather Service forecasts the river to crest around 18.5 feet by early Friday morning, then fall below 18 feet by Friday evening. Looking ahead, the rain will be changing to snow as temperatures plunge. Here is more detailed look at the forecast: Keep checking back with Sewickley Patch for updates.