### cloud:

Lenticular cloud
* are caused by a wave wind pattern created by the mountains
  - characteristic of all mountain ranges and form in response to wind
* are lens-shaped clouds that can result from strong wind flow over rugged terrain
  - result from a strong wind over rugged terrain
  - nearly stationary with respect to the ground
  - smooth and solid in appearance and have been mistakenly photographed for UFOs

### cloud:

Low cloud
* appear gray on an infrared satellite picture while high clouds appear white.
* are often quite thick and reflect lots of sunlight back to space.
* are warmer and generally are composed of droplets
  - still, so they appear as a dark shade of gray or black
* cool the Earth by reflecting solar radiation back into space.
* have a cooling effect on the Earth's surface.
* prevent air support.
* produce a cooling effect.
* reflect sunlight and have a cooling effect on Earth.
* tend to be warmer than higher clouds.

Magnetic cloud
* are a subset of CMEs.
* take two to three days to arrive at Earth.

Massive cloud
* Most massive clouds have centers.
* Some massive clouds produce tornado.

Noctilucent cloud
* become visible after sunset.
* is an unusual phenomenon of the Earth's upper-atmosphere.
* look similar to cirrus clouds.

Orographic cloud
* are common on Earth.
* is often in contact with the ground at the hill top.

Rain cloud
* Most rain clouds are negatively charges at the base and positively charged at the top.
* are down low and are real dark.
* pick up water and they are heating.
* release water.

Roll cloud
* are similar to shelf clouds.
* can also develop in the absence of thunderstorms.

Scud cloud
* are small, detached, wind-torn clouds that often form near thunderstorms
  - which often form near thunderstorms
* go through continuous rapid changes.

Storm cloud
* Some storm clouds become positive charge.
* are clouds.
* can build up electrical charges as water and ice droplets tumble about inside.

### cloud:

Stratocumulus cloud
* are large and lumpy, round or rolled-looking, and often cover the entire sky.
* are low, lumpy and gray
  - puffy and gray
  - with irregular masses
  - masses of puffy clouds with little or no space in between
  - same in appearance to altocumulus and are often mistaken for such
  - the main type of cloud that can produce crepuscular rays
* can result when layers of clouds are heated from below and convection follows.
* consists of large, rounded masses of stratus that form groups, lines or waves.

### cloud:

Stratus cloud
* Most stratus clouds form at tops.
* Some stratus clouds affect transportation
  - are caused by air
  - move current
* are a uniform gray and usually cover most of the sky
  - very low dark uniform gray color
  - another type of cloud
  - generally shapeless
  - good indicators that precipitation is approaching
  - gray and uniform in appearance
* are low clouds that produce a hazy, gray veil with a uniform base throughout the sky
  - layers of thick, gray clouds typical of overcast days
  - low, flat clouds
  - sheetlike and spread like flat layers across the sky
  - the lowest clouds
* are uniform gray in color and almost cover the entire sky
  - grayish clouds that often cover the entire sky
* are very gray and long and they usually resemble fog in the sky
  - low-level grey layers or patches of clouds with fuzzy edges
* build up when warm moist air rides up slowly over a bank of colder air.
* can persist for days in anticyclone conditions.
* extend in flatter formations than cumulus ones.
  - flat layers or uniform sheets
  - in layers
* indicate storms.
* look like a layer of fog that never reaches the ground
  - featureless gray to white sheets of cloud
* produce a drizzle or light mist, never an honest rain.