Dude watches the weather!
Dudes' musher needs to decide if she should travel tonight. She watches the clouds. Clouds tell her what
weather is on its way. Tonight the sky is full of Nimbostratus clouds.
What kind of weather can Dude's musher expect? Snow? Clear? Windy? New front?

  • Altocumulus Clouds: These clouds are composed of mainly water. They appear as white or gray colored patchy puffy like. These clouds from between 6,500 and 23,000 feet.
  • Altostratus Clouds:A dense layer of clouds having a patchy/puffy appearance. The outline of the sun may show dimly as through frosted glass. It often merges gradually into cirrostratus. As with cirrostratus, it often is part of a cloud shield associated with a front. This type of cloud is composed of mainly water vapor and result from lifting a layer. These clouds form between 6,500 and 23,000 feet.
  • Cirrus Clouds: Are thin, feather like clouds composed entirely of ice crystals. They form at altitudes between 16,500 to 45,000 feet above ground. They are often the first sign of an approching front.
  • Cirrostratus Clouds: Are thin, wispy, whitish cloud layers that look like a sheet or veil. Due to their ice crystal makeup, these clouds are associated with halos--large, luminous circles or arcs of circles surrounding the sun or moon. The layer often is the edge of a frontal shield. They form at altitudes between 16,500 to 45,000 feet above ground.
  • Cold Front: The leading edge of a relatively colder airmass which separates two air masses in which the gradients of temperature and moisture are maximized. In the northern hemisphere winds ahead of the front will be typically southwest and shift into the northwest with frontal passage.
  • Front: A boundary or transition zone between two air masses of different density, and thus (usually) of different temperature. A moving front is named according to the advancing air mass, e.g., cold front if colder air is advancing.
  • Nimbostratus Clouds: Rain/snow cloud that is layered. A dark, gray cloud that means more or less continuously falling precipitation ( rain or snow.) They normally occur between 6,500 and 23,000 feet above the ground. This cloud completly blocks the sun or moon.
  • Stratus Clouds: Sheets of dull gray. Stratus clouds often appear in the form of patches, but otherwise do not look like individual clouds like cumulus and stratocumulus clouds. Stratus clouds are found between the ground and 6,500 feet. They usually consist of mainly water vapor. Fog is a stratus cloud with its base located at the ground.
  • Stratocumulus Clouds: These clouds have irregular layers of puffy clouds.This cloud often forms from stratus as the stratus is breaking up or from spreading out of cumulus clouds. They usually consist of mainly water vapor and are located between the ground and 6,500 feet.

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