After a record high temperature for the date on Sunday, Pittsburgh is going back into the freezer.
The 72 degrees recorded Sunday shattered the record of 67 set in 1949. Nearly three-quarters of an inch of rain fell over the weekend, and combined with snow melt across the region, that was enough to push the Monongahela River into the wharf parking facility, closing it at least through Christmas Day.
The river was expected to rise a bit more today, reaching a level high enough to flood parts of the North Shore Riverwalk, according to the National Weather Service. Not that a walk today would be especially pleasant -- the temperature is expected to fall through the day, reaching 31 degrees by 5 p.m. and 23 overnight.
Snow showers are possible in Allegheny County tonight and Tuesday, with Tuesday's high reaching only 27 degrees. Christmas will bring partly sunny weather with a high of 30.
Northwest Pennsylvania remained under a flood warning through this afternoon. The weather service also posted a lake effect snow watch for Erie County from 1 a.m. to 10 a.m. Tuesday.
Jon Schmitz: firstname.lastname@example.org, 412-263-1868 and on Twitter @pgtraffic.