It looked like spring as Rosie Dean, 6, of White City, and her dog Toby soaked up some sun near the flowering trees in Bear Creek Park on Thursday. But winter is poised for another last gasp with the approach of a cold front. A snow advisory has been issued for the parts of the Rogue Valley above 2,500 feet, until 6 p.m. today. (Medford's elevation is about 1,400 feet.) Sun is expected to return on Sunday, in advance of another wet but warmer storm Monday.