A weak cold front is expected to spread into eastern Colorado late Wednesday night...with cool moist air spilling across the plains to the east slopes of the mountains. Areas of low clouds...patchy fog and very light precipitation will be possible Thursday morning...along with isolated thunderstorms developing late in the day over the eastern mountains and along the southern border counties. Temperatures in eastern Colorado should be around 10 degrees cooler than Wednesday's warm readings. Another mostly sunny and warm day is in store for the central and western mountains along with the valleys from Leadville to Alamosa.   (Please visit http://weather.gov/pub for more information.)