February 14, 2016 9:48 am NBC10 First Alert Weather: Polar Temperatures It’ll be sunny on Valentine’s Day, but cold temperatures will stick around. How long will we be in this deep freeze? NBC10 First Alert Meteorologist Karen Thomas has the forecast. US & World Videos 0:19 Body of missing kayaker found in the Schuylkill River 2:00 Police officer placed on administrative duty after killing dog that attacked a man 0:51 Police officer shot and killed 1 of 4 dogs that attacked a 53-year-old man 1:49 ‘We have to do better': Philly teen dedicates her Instagram to humanizing victims of gun violence 1:22 Video shows man walk up to ring doorbell with an apparent gun, police say