SUZU, Japan (AP) — Japanese rescue workers and canine units are searching urgently through rubble ahead of predicted bitter cold and heavy rain in what the prime minister called a race against time after powerful earthquakes killed at least 62 people. Dozens more people are believed to be trapped under collapsed buildings in western Japan. Ishikawa prefecture and nearby areas were rattled by a 4.9 magnitude aftershock early Wednesday. It’s just one of dozens that have followed a magnitude 7.6 temblor that struck on Monday. Experts say the first 72 hours are critical for rescues because the prospects for survival greatly diminish after that. Prime Minister Fumio Kishida told reporters on Wednesday: “More than 40 hours have passed. This is a race against time.”