Why does the wind veer behind a warm front in a depression?
604591
Fronts are defined as the local areas of lowest pressure.  Air flows towards low pressure, so winds are northeasterly north of a warm front and more southerly to the south of it (in the typical northern hemisphere setup).\n\n---\nYou use the term veering (wind changing clockwise with time) like you are looking for a more indepth meteorological answer... but I'm not sure exactly what you are asking when you bring up the air mass and the jet stream.  If you have taken some meteorology classes and are having trouble relating some of the concepts, like Thermal Wind and Quasigeostrophic Theory, let me know by email, and I'll try to help you more.\n\nHope I helped,\nGod bless,\nShane
1174027
I'm gonna try to answer this...I have no idea how close this is gonna be...\n\nThe jet stream is influenced by high and low pressure gradients which form...In some cases...a strong high pressure will cause a weaker low pressure area to stay stationary right where it's at..This would cause a ridge around that higher gradient with fairer weather and warmer temperatures...\n\nBasically, the jet stream depicts the way storms will track over that given time period, and sometimes gives them higher intensities...\n\nThere are many phenomena that could cause a jet stream to bow like a W...A trough that is cut off from all steering winds could make one area for cool and cloudy while in another section of the country, they could be under high pressure and getting SW flow, meaning they could be having RECORD HEAT!!\n\nUsually when a pattern is zonal, storms are quick to track off as there's not much blocking them...It usually means an absence of weather systems which would mean less chance of convective activity across the area...\n\nI hope this helps..I am a spotter, but I don't have the four to seven years of college other meteorologists do!
312558
it will cause some transitory cooling as the moon's shadow tracks across the surface of the earth - this localized cooling may cause some brief wind as the surrounding warmer air interacts with the cooler air in the shadow.  These effects are minor, and short-lived.
9831
Cold and Warm air fronts crashing into eachother and making them both spiral downward.
712129
The general patter of wind now is a three-cell model, with sinking air at 30 degrees lat and rising at 60.\n\nWith no rotation, wind would move straight from the cold, sinking poles to the warm, rising equatorial region, i.e. a one-cell model.
417730
It could also be the wind going in different directions pushing the top layer of the water in different directions which in turn, gives you different reflections which can appear to be separated.
403512
Mostly due to the sun heating the Earth and the ocean, causing convection and ocean currents, which effect the atmosphere and cause wind.\n\nThat's the very short answer; read this for the complete one: http://en.wikipedia.org/wiki/Wind
1001278
Warm fronts usually have stratus clouds and the kind of widespread precip associated with them because the slope of the warm front is smaller than that of a cold front.  This means the cold front can act as a lifting mechanism for such towering cumulus clouds whereas on a warm front, because of the small slope, air won't be lifted as high and clouds won't form as high.
56557
Abrupt vertical growth on clouds and/or thick cloud layers...   Winds at the surface are typically more southerly just ahead of a cold front and strong temperature and dewpoint discontinuities are found along cold frontal boundaries.  For instance if you're sitting at 49 degrees with a dewpoint of 41, and a city/town west or northwest of you is sitting at 33, with a dewpoint of 17 - most likely you'll have a cold front between you.  Certainly, not always the case, but is generally true.  Your dewpoint depression (the value of your dewpoint subtracted from your temperature) is also typically less than that found behind a cold front.
494114
The chinook phenomenon results from the movement of high and low pressure systems over the Rocky Mountains. As the wind moves over and through the mountains, the moisture in the air condenses, warming the air by releasing latent heat. Then, as it moves downhill, the cold air above presses down upon it, resulting in further warming through adiabatic compression.\n\nQuite often, when the West Coast is being hammered by rain, the windward side of the Rockies is being hammered by snow (as the air loses its moisture), and the leeward side of the Rockies in Alberta is basking in a chinook.\n\nTwo common cloud patterns seen during this time are:\n\nA chinook arch overhead \nand/or\n\nA bank of clouds obscuring the mountains to the west. It would appear to be an approaching storm, but it does not advance any further east.
155061
The temperature must drop below freezing up in the atmosphere,  where there is a concentration of water vapor. Typically this is caused when a warm front (full of water) rolls over a cold front -- the drop in temperature condenses the water high up and it drops to the ground as snow. But it can also happen when a cold front moves over a lake (ie. lake-effect snow). This is seen in a place like Buffalo.
730245
The jet stream is a current very high speed air 6-12 miles above the earth. It flows from west to east carrying with it weather systems. For example, it pushes cold dry air, warm moist air, low pressure, high pressure, etc. The jet stream is the main reason we have cold fronts. It pushes large masses of cold dry air usually to the south or east. You rarely see cold fronts going north or west because the jet stream flows the other way. The jet stream also pushes pressure systems around, causing sunny weather or rainy weather. To answer your second question, the jet stream doesn't really affect cyclones or anticyclones because the jet stream is so high up, and high pressure usually controls a cyclone's movement. \nBasically, if we didn't have a jetstream, all the weather patterns that currently are in place would stay where they are. If it's sunny and dry, it will stay that way. If it's rainy, it'll still be rainy.
171188
There are several answers to this question, Atmospheric pressure. The jet stream. The spinning of the earth. But the underlying principal cause is the sun. The suns rays create heat. The heat hits the earth in an uneven way, and that temperature differential creates differences in pressure it these differences in pressure that drive our winds and move air masses of different temperatures that create weather
1079475
I would say on the eastern side.  You're still going to be experiencing the most Positive Vorticity on that side.  Though the clouds should be mostly mid and high level clouds.  \n\nAs for formation:\n\nFrom the American Meterological Society glossary:\nA sequence of events by which a warm high or cold low, originally within the westerlies, becomes displaced either poleward (cut-off high) or equatorward (cut-off low) out of the westerly current. \nThis process is evident at very high levels in the atmosphere; it frequently produces, or is part of the production of, a blocking situation.
38436
Nowhere.  Wind is caused by changing temperatures and air pressure.  It eventualy stops because of resistance and when the air pressure evens out.  It is then going nowhere which is the answer to your question.
728543
From USA Today:\n\n"Q: Why does most of our weather come from the west if the Earth is rotating the opposite way?\n\nA: When looking down at the North Pole, the Earth spins counterclockwise around its axis. A point on the equator travels at about 1,100 mph, while a point directly at the poles does not move at all. An apparent force called the Coriolis force results from this difference in speeds, deflecting objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. The Coriolis force, combined with solar heating patterns across the Earth, create distinctive wind patterns that drive weather systems.\n\nOne prevailing surface wind pattern that results is located in the mid-latitudes, between 30 and 60° North. Solar heating alone, without the Earth's rotation, would produce prevailing southerly winds. The Coriolis force, however, deflects these winds to the right, creating prevailing winds out of the west and southwest (the westerlies). \n\nSolar heating patterns in the tropics, from the equator to about 30° North, combined with the Coriolis force, produce weak prevailing winds out of the east (the easterlies). Southern regions of the USA, including Florida, are affected by the westerlies at times and the easterlies at others."\n\nHope this helps explain it. Check the first link for other weather questions and second link to see a full explanation of the consequences of rotation on weather.
73372
When the cold air touches the warm air, the humidity in the warm air will condense and fall as rain. The intensity of the rain will depend on how much humidity is in the air and the temperature difference between the cold and warm front.\n\nIf a 30°F cold front touches a 70°F warm front and there's a lot of moisture in the air, then it results in a massive thunderstorm.\n\nIf you see the doppler radar pictures on the news, you'll see that rain usually comes in bands. That band of rain is the leading edge of a cold front.