Water Vapor map in which you can make out the jet stream from Washington down through the northern tip of Texas then swinging up. In this upswing, we see a nice area of heavy water vapor which is where a storm cell passed through today.
This is the jet stream map from today and you can see the area where a cold air mass and warm air mass collided right in Oklahoma, Kansas, and Missouri. The white isobar(pressure) lines get really close together and this is typically where you will find a storm cell.
Here is a zoomed in look at the area affected by this storm cell. I like this figure because it shows the low pressure system coming up from the Gulf of Mexico (mT air mass) and it is colliding with a high pressure system moving southeast. You can see how it starts as rain until it hits the cooler air and then turns to sleet and eventually cools enough to form snow as it moves northwest.
This current surface map I got at 11 p.m., shows that storm cell moving to the northeast and is not very strong so it won't produce a lot of precipitation. Up to the north it is calm and cooler than the past few days as air from the cP air mass descends down from Canada.
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