Looks like we will have a major winter storm system going through the plains late this week. Thought I would post something as it looks like several ladies may be traveling though here around this time frame. I still find the best source of weather information the National Weather Service which can be found at www.weather.gov.
Here is a link to snow potential and timing of snow. This could be off a little bit as it was released Tuesday Morning, but I would think they will have a fairly good handle on the system by Wednesday morning. http://www.crh.noaa.gov/wxstory.php?site=oax
When I lived in Minneapolis, I remember them forecasting 3-5 inches; at 6 inches, they upgraded it to 4-6 inches; at 8 inches, they upgraded to 7-10 inches, and so forth. We ended up with 30 inches that time. 


Seriously, PM me when you know you'll be making a trip west....