This is a more in depth understanding of weather features and how they create weather on earth.

When you look at a weather map and see that there is going to be a warm front approaching your area. Above is a cloud guide to show you what kind of clouds you could expect to see as the front arrives.

Here is the cloud patterns with a Cold Front. When a weatherman says  that there may be a squall line to move into the area that comes upwards to 150miles before the main cold front arrives. Also you need to be concerned with this squall line as sometimes this is where the most Severe Weather occurs. All of these features are associated with the In-Active cold front which is the front closes to the center of the low.

Now we examine what is called the Active Cold front and you can see with this front it is further away from the center of the low and has thunderstorms near the front. There is no squall line with this part of the front either.

The next front is the one that you see on the weather map that has blue and red lines together. This front is called the stationary front. Most commonly you will see this front form near the Gulf of Mexico in the US. Also this front is associated with very little temp change and has heavy rain along it. Also this front sometimes is called a quasi-stationary front meaning that it moves very little, most of the time this front moves with during the day one direction and then at night another direction.

Now we look at the wind flow around a Low pressure. To understand the direction the best it is easy to imagine a arrow on the other side of the wind barbs. Winds always blow from. So if you look ahead of the warm front the winds are blowing from the Southeast. Behind the Cold front you see the winds are blowing from the Northwest. So this explains why it is warm ahead of the cold front because the winds are blowing from the warmer air. While behind the cold front the winds are blowing from the North and colder.