Weather forecasting has come a long way over the last three decades, says Marty Coniglio. Back in March 1990, when he told his news office that Denver would see a big blizzard in five days, his revelation was met with disbelief. Bigger and better computers doing more calculations led to better forecasts, he says. So how much snow will Denver see this weekend? Looking at the models late Thursday, Coniglio went with totals of between 18 and 24 inches. But we're still a day or two away from seeing if he's right. In the meantime, readers have been posting a flurry of comments on the