Wh do COLD FRONTS affect the eastern parts of the nation more than the Western?

It seems like 75% of cold fronts dont affect places like Nevada, western montana, New mexico, and westwards.



how come most cold fronts have a targe to where it's heading. how come it doesnt overtake the whole country. like you know when the metorologistsshow the blue lines, the cold front could be moving from northwest to southeast and othr times, mostly irregualr directions. the eastern part of the front may be around Maine while te Western side is around Minnesota, and in the middle, it makes like a strtcing shape.



i caint explain it, but you know, since yall know about the weather.



so how come cold fronts come like that.

sometimes they may affect the Northeast with below zero temperatures while the Southeast has temperatures in the 30's. In a lot of cold fronts and the ones that have come this year, Tennessee has been seeing lower temps, then Some parts parts of the northeast.



so what causes the fronts to send more cold air to some places and leaves others warmer?Wh do COLD FRONTS affect the eastern parts of the nation more than the Western?
Fronts are caused by moving air masses, warm or cold. For cold fronts over North America, they form over Canada. This air mass is titled "Continental Polar". This means it is a cold dry air mass. One key feature that allows this air mass to push south is the polar jet stream (This is a flow of air aloft that moves roughly west to east). During the winter months the air over canada becomes colder due to less radiation from the sun and the sub polar jet pushes south.

So when a cold front moves south it flows usually northwest to southeast. Main reason it doesn't effect Nevada or New mexico much is because of the Rocky mountains. The rockies play as a wall. This is because cold air is dense.



I hope this makes sence.Wh do COLD FRONTS affect the eastern parts of the nation more than the Western?
how sickWh do COLD FRONTS affect the eastern parts of the nation more than the Western?
Well, they certainly affect the West Coast a lot--cold fronts are the big rain producers in California, Oregon and Washington. If you're wondering why aren't as cold, it's because the air has been in contact with the Pacific Ocean, which is not exactly warm but is above freezing. Inland in the west the structure of the cold fronts is adversely affected by a series of mountain ranges they have to cross: the coast and peninsular ranges, the Sierra Nevada, the mountains of the Basin and Range, and the Rockies. Because of this, they end up a bit ill-defined, but nevertheless they do affect all the areas you're talking about. East of the Rockies the fronts often appear to re-form, often fueled by the temperature contrast between cold continental air from Canada and the Arctic and warm moist air from the Gulf of Mexico.