It is a dramatic weather day! Happy Tuesday NBC Action Weather Bloggers,
12:40 PM update:
Look below at the 12:30 PM Live:ESP radar image. A heavy band of snow is moving through with winds gusting to over 40 mph. This will produce near blizzard conditions throughout the Kansas City metro area for about one hour. 1/2 to 1 inch may accumulate and blow around as this band moves through.

Previous entry below:
It was 55 degrees at 6:30 AM and in less than four hours we have fallen into the teens. Snow is now falling and a disturbance will move through bringing one band of heavier snow through the region. This will all be out of here later this afternoon leaving blowing snow and some minor accumulation of up to one inch. 1 to 2 inches will likely fall from Topeka to just north of Kansas City to Richmond and north of that line.
Our next storm will move in Wednesday night and Thursday. We have had storm systems similar to this one, and 1-4 inches has been about what this storm has produced. The good news is that even areas to the south should easily be in this range as well. Look at the 12z GFS showing the 500 mb flow Thursday morning and the 850 mb flow. I will explain below:

The map above is the GFS forecast valid at 6 AM Thursday. Look at the X in northern Oklahoma. This is the vort max (short for vorticity maximum), which is an upper level storm or shortwave associated with the trough, or dip, that you can see in the 540 line (the black line that dips across Kansas). This is not quite an upper low. It would be nice if an upper low formed over southern Kansas on Thursday morning which would substantially increase snowfall totals, but it more likely just slides by, as we have seen happen a few times this season. It will likely eventually form into an upper low as it passes us, and this is something we will be paying close attention to. But, as is, this is a good solution to bring wide spread snowfall to our entire viewing area. It is too early to pick out who will see the most snow, so please wait until Wednesday before asking these questions. This upper level system helps create a "snow making" machine in the form of an 850 mb low. Look below at this map:

This map is the 850 mb level, or around 5,000 feet up. If it forms as forecast by the latest data, then snow is likely. This is actually quite well formed and with a nice warm advection zone by 6 AM Thursday, that has set up right over us. Look at the flow. Kansas City is around -4 degrees Centigrade, with +6 degrees C pumping into our region effectively creating a large area of rising motion and snow should be the result. But, will it look like this? It is still two days away. We are going to start with our motto, 1 to 4 and no more! Until we see evidence of more than this possibility we are going to go with 1 to 4 inches through our viewing area.
Watch tonight at 5, 6, and 10 PM and we will continue to provide you with Kansas City's most accurate forecast. We hope you are enjoying our up to date weather blog! Have a great day. Share with us your experiences on this unbelievable weather day!
Gary