great lakes, temperatures in the 20s. that's the air mass moving in tonight. satellite and radar showing the clouds from earlier today have moved on. there are no clouds to insulate the earth and protect us from the cold. tomorrow morning is a bit of a shock to the system after this morning, temperatures in the 40s. tomorrow morning, 29 in philadelphia. 24 allentown, 27 in wilmington. atlantic city 29-degrees. the winter se solstice officialy 11:28 tomorrow when the sun rays are over capricorn. tomorrow, lots of bright shine, cool temperature in the low 40s. i'm tracking major changes toward and through the holiday weekend. i'll explain in the accuweather forecast. jim? >> cecily, thank you. investigators believe the engineer may have been stractedd for an extended period of time after an amtrak drain went off the track on monday. officials have reopened the lanes of the major north/south artery in duponte washington. >> meanwhile the driver of the amtrak drain crash two years ago was in court for a hearing. prosecutors are seeking to have the charges reinstated. a new hearing for the appeal has been set for february. >> new at 11:00 tonight, president trump has nominated