No, "calm crystal clear" is not considered alliteration because the repetition of sounds must occur at the beginning of words in close proximity. In this phrase, the repeated sounds are at the beginning of each word but they are not consecutive.
The opposite of a thunderstorm would be calm weather, such as clear skies and no precipitation.
* calm * clear * clement * limpid
Cloudy clear quartz is believed to have a grounding and stabilizing effect in crystal healing practices. It is thought to help balance emotions and promote clarity of thought. This type of quartz is often used to enhance focus and concentration, as well as to provide a sense of calm and inner peace.
The opposite of a stormy day is calm or sunny.
It is believed that some tornadoes have a calm, clear center similar to the eye of a hurricane. This is caused by the winds spinning so fast that they cannot reach the center. Aside from that it is neither calm nor clear in a tornado.
There is not opposite of a tornado, except perhaps a clear day with no wind.
dew
clear calm afternoon
none of your beeswax
In chapter 11, the word "I" is used by Reverend Dimmesdale
Calm leadership with clear foresight, and respect for their pack.
In the eye of a hurricane, you would experience calm and clear skies. The winds are light, and there may even be some sunshine. This is surrounded by the eyewall, a region of intense thunderstorms and strong winds.