what cloud formation extends in a long low layer?
829134
Stratus clouds, which are the lowest layer, form up to 6500 feet and can be found in the form you described.
806573
warm air over warm gulf current water promotes evaporation and thus more clouds and more rain.\nocean water off LA is cold California current, and doesn't evaporate as well, so forms fewer clouds.
606380
Clouds are tiny droplets of water that have condensed on condensation nuclei such as pollen, dust, ash, & pollution in the troposphere.\n\nB/c they are very tiny and independant of each other, they tend to be suspended. This is due to various things such as updrafts, winds, etc. They are very lightweight. Only when they begin to start growing in size will gravity take over & they start to fall as rain.
149649
Did they look like this? If so, they were nothing more harmful then Lenticular Clouds. Normally, air moves much more horizontally than it does vertically. Sometimes, however, such as when wind comes off of a mountain or a hill, relatively strong vertical oscillations take place as the air stabilizes. The dry air at the top of an oscillation may be quite stratified in moisture content, and hence forms clouds at each layer where the air saturates with moisture. The result can be a lenticular cloud with a strongly layered appearance.
346255
I can't remember exactly but its something like this.  Large, tall clouds form.  Vapour freezes (hail). Updraught occurs which is strong enough to support the weight of the hailstones inside the cloud.  Hailstones move and collide  getting bigger until updraught can't support the weight anymore and they fall, air temperature is cool enough to keep stones frozen until they reach the ground.
764632
compare...   wind  rain  clouds\n\ncontrast...  cold  cold/warm mix  warm
970970
This is not a simple answer to explain in one or two sentences, so I will give it in two parts.  First, the basic reason:\n\nOvernight, the breezy conditions that was on the surface is lifted upwards.  This is because the surface becomes very stable with the loss of daytime heating.  The wind will blow above this layer of stable air until after sunrise when daytime heating will bring the winds back to the surface.\n\nNow the more detailed explaination.  In general, wind at night will decouple from the surface if...\n-there is no strong subsidence (sinking of air) like what you will find behind a strong upper level disturbance.\n-there is strong mixing (unstable airmass) in and ahead of a storms system\n-there is strong surface winds with upper level support. (winds blowing from the same direction through a deep layer above the surface)\n-near ridge or hill tops\n\n(Assuming no major weather changes are expected to occur overnight...)  During the night, with the loss of daytime heating, we lose two parameters that will keep the winds blowing near the surface.  The thermal gradient usually becomes weak and the surface cools.  A thin stable layer forms near the surface as heat rises to the top of this layer.  With time, this layer will thicken as warm air continues to leave the lower layer and replace by cooler air.  The top of this layer, you will find a temperature inversion.  This layer will seperate the higher winds that has lifted higher in the atmosphere and the very stable and near calm winds below.  Once the sun rises, the surface warms and starts to mix.  This will break the inversion and the winds will start to mix back down to the surface.  \n\nThis is also the reason why during the winter, sometimes you will find ground fog forming in a thin layer during the evening and then lifting to a low cloud or stratus right by sunrise; then "burning" off during the day.
997610
They are shaped by the wind and heat.\nSee in\nhttp://allaboutweather.tripod.com/cloudclassification.htm
78023
Clouds move at the wind speed at their particular elevation. Typically what this means high clouds (typically cirrus) move faster than lower clouds (e.g. cumulus), and effect you can see occassional on partially cloudy days, however, in hurricanes and other localized weather events, low clouds can move extremely fast also.
1116902
The mechanism of Cloud formation is still not understood. Researchers are now applying Chaos Theory in the study and modelling of cloud behavior.\n\nWe "see" clouds only when the high moisture regions are sufficiently close to refract and reflect light. Actually they are highly dynamic systems.
47849
It has to do with moisture saturation.  Big tall clouds have this unlike the thin high cirrus clouds.
297833
Clouds are made of water vapor.  You inhale clouds every time you walk into a patch of fog, because fog is just a cloud at ground level.  Clouds are formed when water evaporates from the surface of the Earth and makes its way upward.  The water condenses and we get a cloud.  When clouds get too laden with water, it falls in liquid form and we get rain.
504229
Cirrus clouds. The puffy ones are cumulus, and dark ones nimbocumulus. The cirrus clouds are really high up.
854216
Since a cloud is made up of lots of small droplets of condensed water (or, in the case of some clouds, the condensed water freezes into ice crystals), if you were able to "shake" the cloud (get the water droplets moving around randomly) they would collide and form larger water drops.  These drops should then eventually become heavy enough to drop from the sky as rain.\n\nWikipedia has a pretty good article on clouds.
195191
Fog is made when water vapor condenses, the same as clouds.\n\nTechnically they are the same thing. Fog is obviously at lower altitudes.\n\nClouds form when warm moist air rises, cools (reaches dew point), & condenses on small particulates (aerosols) in the atmosphere.\n\nFog can form in many different ways. There are about 5 or 6 that I know of...\n\nRadiation: forms on cool clear nights\nSteam fog:forms over water when the water is still warm but the air is cool (think fall nights)\nAdvection: moist air flowing over cool water or land (think San Francisco)\nvalley fog\nprecipitation fog\n\nknow less about the last 3.\n\n:)
147828
High and low pressure regions result from uneven heating of the surface and the movement of air masses.\n\nAreas of low pressure occur where air is being displaced upwards either due to convection or the movement of a front (usually a cold front). This usually results in unstable air, clouds, and rain. Wind circulates counter-clockwise around low-pressure centers in the northern hemisphere. \n\nAreas of high pressure occur where air is sinking - if you are in a high pressure zone where the air column is stable you experience clear skies.\n\nAlso there are regions around the United states that experience persistent highs or persistent lows - places where these pressure conditions are almost always present.
588652
They end up becoming the 'seeds' of clouds.  That is, water in the air condenses around them, & once the process starts, those condensation  trails sometimes form into clouds up to 500 miles long.\n\nI read about it in, I believe, Popular Science a couple years ago.  There was also a fascinating article about a study that took place during the 3 days in 9/01 when all planes in the U.S. were grounded:  due apparently to the reduced cloud cover, temps everywhere were a couple degrees higher those days!