Cloud Reference Libraries

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Weather Model Discussion How To Use Surface Dew-points For
2013-01-29 08:53:47

Surface Dew-points can play a huge role in weather forecasting. The first such role is that it helps determine the amount of moisture in the atmosphere for a given point. If we look at the current dew-point map above from January 28, 2013 we can note several things of interest. First, if we look at where the black circle is around the number 70, we can make note that this air right off the...

Weather Education - Orographic Thunderstorms
2013-01-13 09:40:16

Orographic thunderstorms are formed when the air is pushed up a mountain side. This type of thunderstorm is found only on the windward side of a mountain range. In the United States we would find these types of thunderstorms on the western slopes of the Rocky Mountains and also on the western slopes of the Appalachians. Things that make this thunderstorm important: First of all they only...

Weather Pack For July 30 2012
2012-08-01 12:22:59

Weather Pack is our way to envision what is happening with the weather and create a weather forecast for a certain area of the United States. Today’s focus is on Southwest Mississippi along the Mississippi River. On the left side we have a Skew-T which is used to help us determine what is happening in the upper levels at our forecast location. On the right side is our morning satellite...

Surface Analysis Features
2012-09-03 16:09:19

The above map looks at what is known as ceilings. The definition of ceilings is the first broken or overcast layer of cloud cover in the atmosphere. For it to be considered a ceiling the clouds need to cover more than half of the sky. If we look at the red circled area we see the numbers of 1 and 2. This tells us that there is a ceiling at 1,000-2,000ft which are in the level of low clouds such...

Cumulus-nimbus Clouds
2014-01-11 00:00:00

The image above shows a Cumulus-nimbus cloud that has an anvil top to it. The reason that can be identified is that the cirrus is in place above the center of the storm. The image below does not have an anvil top yet. The anvil top forms on CB clouds after they reach the height in the atmosphere where they begin to feel the upper level winds becoming too strong for them to continue development...

Types of Clouds
2012-07-19 17:40:55

The above cloud is known as a towering cumulus cloud or TCU for short. TCU clouds are a form of cumulus clouds. They are the second stage of the cumulus family. The thing that makes these clouds unique is the vertical extent of them. They can extend very high into the atmosphere and sometimes they form in multiple rows. Towering Cumulus clouds can bring waterspouts when they are over the open...

Cloud Formation
2012-07-17 22:18:38

Evaluating one way of how clouds can form. To understand this method it’s important to understand a few terms. The first one is Cloud Condensation Nuclei. The CCN can consist of anything from dust, dirt, salt anything that is floating in the air. The second thing is moisture. There must be moisture present in the atmosphere to condense on the CCN to form a droplet. Next step to the...

Cumulus Clouds Low Cloud
2014-01-11 00:00:00

If you look in the photo above you can see the line of Cumulus clouds that appear in the background. These clouds were created by daytime heating and also an unstable atmosphere. The moisture for these clouds was rising from the Pacific Ocean. The darker cloud is the stronger of the cumulus clouds meaning that the majority of the moisture is being absorbed by that cloud. The clouds around this...

Cumulus Clouds
2012-07-16 11:04:21

Cumulus clouds are white in appearance and are formed when warm moist air near the earth’s surface is forced aloft by day time heating. Cumulus clouds are usually associated with nice weather, however if they continue to grow and get more moisture and instability with them they can turn into Towering Cumulus and CB clouds which would change the weather to increase the chance of seeing...

Components Of A Super Cell Thunderstorm
2012-05-21 08:09:58

So what makes a super cell thunderstorm so special? It is the way that they are made and what it takes for them occur. It takes three types of air coming together to form these monster cells. The first is the warm moist air rising in from the Gulf of Mexico. Second is the drier air moving in from the desert southwest and the third is the cold air coming in from the Rockies. When all three of...

Word of the Day
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'