Predict Clear Skies: Easy Ways to Forecast Stargazing Nights

  • Thread starter Eh
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In summary: So you might as well use the one you have and be prepared for a lot of variation.It is useful to consult the weather channel, local forecasts, etc., but these are not always accurate. The best way to predict night sky conditions is to check the weather on TV or through the web, which can be more accurate than relying on rules of thumb.
  • #1
Eh
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Is there an easy way to predict if the night sky will be clear by using observations during the day? Obviously a very cloudy, rainy day will lead to a similar situation at night, unsuitable for stargazing. But it's not always so obvious. During the day, the sky can be filled with clouds one moment and be completely clear the next. Can weather be used as an indicator here? For example, if it's very hot are clear skies more or less likely? I'm ignoring the usual pollution for simplicity.
 
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  • #2
The best way is to check the weather on TV or through the web. They can do better than rules of thumb.
 
  • #3
Clarity vs steadiness

It is handy to consult the weather channel, your local forcasts, etc, but in terms of usefulness, you need to define your observing goals, and develop some experience with your local conditions.

You may find that the very clear nights that occur shortly after a cold front has passed yield very "twinkly" skys that are best used to try to glimpse very dim but diffuse objects. If you want to see very small planetary details, etc, you will often be better off choosing a night between frontal systems when the air is steady, although sometimes not as clear.

Good luck!
 
  • #4
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  • #5
Even better, use the clear sky clock. It's fairly accurate. You might also want to consider using aviation weather forecasts, which are more precise and more frequently updated.

http://cleardarksky.com/csk/

- Warren
 
  • #6
Of course I could just check for a weather update or look at some of the other resources provided. But I'm also curious as to what conditions are usually involved in the process.
 
  • #7
Weather is caused by differences in air pressure and the thermodynamics of the water vapor/liquid/ice in the atmosphere. A uniform force, the coriolis force acts to trun differences in pressure into basically circular wind patterns.

When water droplets evaporate they cool their surroundings; cool air tends to sink. When water vapor condenses into droplets it warms its surroundings; warm air tends to rise. Large scale air masses meet at near singularities called fronts; fronts can travel over long distances changing shape and intensity as they go. Fronts lift the air ahead of them and cause cooling and condensation which causes heating and rising which makes layers of clouds. Most of our weather comes from these facts.

Modern computerized atmospheric models can do tonight's weather pretty well. For three or four days they are useful but a long way from perfect. The usual weekly forecast is about 50-50 right.
 

1. How accurate are the predictions from "Predict Clear Skies"?

The predictions from "Predict Clear Skies" are based on real-time weather data and are typically accurate within a 24-hour period. However, factors such as sudden weather changes or unforeseen circumstances can affect the accuracy of the predictions.

2. What sources of data are used to make the predictions?

The predictions from "Predict Clear Skies" are based on a combination of local weather data, satellite imagery, and historical weather patterns. This data is constantly updated and analyzed to provide the most accurate predictions possible.

3. Can I use "Predict Clear Skies" to forecast stargazing conditions in any location?

Yes, "Predict Clear Skies" can be used to forecast stargazing conditions in any location as long as there is access to real-time weather data and satellite imagery. However, the accuracy of the predictions may vary depending on the availability and quality of the data in a particular location.

4. How do I interpret the predictions from "Predict Clear Skies"?

The predictions from "Predict Clear Skies" are presented in a simple visual format, with color-coded icons indicating the likelihood of clear skies for stargazing. Green indicates high chances of clear skies, yellow indicates moderate chances, and red indicates low chances. It is important to keep in mind that these predictions are not a guarantee and should be used as a guide.

5. Can I adjust the settings in "Predict Clear Skies" to suit my personal preferences?

Yes, "Predict Clear Skies" allows users to customize their preferences for stargazing conditions, such as temperature, humidity, and wind speed. These preferences can be adjusted in the settings menu to provide more personalized predictions for the user's specific stargazing needs.

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