Rüzgar bir anda duruverdi, gökyüzü daha sakin görünüyor.

Yes, literally bir anda is something like in one moment/at one instant, but as a fixed expression it means suddenly or all of a sudden.

In this sentence, Rüzgar bir anda duruverdi means the wind stopped very suddenly.

A few useful comparisons:

• bir anda = suddenly, all at once
• hemen = immediately
• aniden = suddenly

So bir anda is a very natural way to describe a sudden change.

Duruverdi contains an extra element that adds nuance.

It can be broken down like this:

• dur- = stop
• -uver- / -iver- = do something quickly, suddenly, or almost unexpectedly
• -di = past tense

So:

• durdu = stopped
• duruverdi = stopped suddenly / just stopped / stopped all at once

This -iver/-uver form is very common in Turkish and often gives a sense of:

• quickness
• suddenness
• ease
• slight surprise

In this sentence, it makes the stop feel more abrupt and vivid.

Because Rüzgar is the subject of the verb, and subjects normally take no case ending in Turkish.

Here:

• Rüzgar = the wind
• duruverdi = stopped

So Rüzgar is simply in the basic dictionary form.

You would use rüzgarı if it were a definite direct object, for example:

• Rüzgarı hissettim. = I felt the wind.

But in your sentence, the wind is doing the action, so no extra ending is needed.

In this sentence, gökyüzü is just the normal noun meaning sky. The final -ü is part of the word as it is commonly used.

Historically, it comes from a compound structure, but for learners it is best to treat gökyüzü as a complete vocabulary item:

• gökyüzü = sky

So in this sentence, that final -ü is not a separate case ending you need to analyze.

For example:

• Gökyüzü mavi. = The sky is blue.
• Gökyüzü daha sakin görünüyor. = The sky looks calmer.

Good question. This is not the verb görmek (to see) in the ordinary sense.

Here the verb is görünmek, which means:

• to appear
• to seem
• to look

So:

• görünüyor = is appearing / seems / looks

In this sentence, gökyüzü daha sakin görünüyor means the sky looks calmer or the sky seems calmer.

Compare:

• görüyor = he/she/it sees
• görünüyor = he/she/it appears / looks

That extra -n- is important because it changes the verb.

Yes. Turkish commonly makes comparatives with daha.

• sakin = calm
• daha sakin = calmer / more calm

So gökyüzü daha sakin görünüyor means the sky looks calmer than before.

Unlike English, Turkish does not need a special -er ending on the adjective. It usually just uses daha:

• büyük = big

• daha büyük = bigger

• güzel = beautiful
• daha güzel = more beautiful

Sometimes the thing being compared to is left unstated, as it is here. The meaning is simply calmer than before or calmer now.

Because the sentence describes:

1. a completed event in the past
2. a present result or current appearance

Breakdown:

• duruverdi = stopped suddenly
  This is a completed action, so past tense makes sense.

• görünüyor = looks / seems
  This describes how the sky appears now, so present progressive is natural.

So the sentence is basically saying:

• the wind suddenly stopped,
• and now the sky looks calmer.

This mix of tenses is very natural in both Turkish and English.

Both forms exist, but they do different jobs.

• görünüyor = is looking / seems right now
• görünür = appears / is visible / tends to appear

In this sentence, the speaker is describing a current visual impression, so görünüyor is the more natural choice.

Compare:

• Gökyüzü daha sakin görünüyor.
  = The sky looks calmer now.

• Gökyüzü sakin görünür.
  = The sky appears calm / looks calm in a more general sense.

So -yor helps make it feel immediate and present.

Yes, the comma is natural. It links two closely related clauses:

• Rüzgar bir anda duruverdi
• gökyüzü daha sakin görünüyor

This punctuation gives a smooth cause-and-result feeling.

You could also write:

• Rüzgar bir anda duruverdi. Gökyüzü daha sakin görünüyor.

That would also be correct.

Or with ve:

• Rüzgar bir anda duruverdi ve gökyüzü daha sakin görünüyor.

But the original version with a comma sounds compact and natural in descriptive writing.

It is very normal.

First clause:

• Rüzgar = subject
• bir anda = adverbial phrase
• duruverdi = verb

Second clause:

• gökyüzü = subject
• daha sakin = descriptive phrase
• görünüyor = verb

This follows the common Turkish pattern of putting the verb near the end.

So the sentence feels natural and straightforward, not unusually poetic or inverted.

A little, yes. It is not overly dramatic, but it is more vivid than plain durdu.

Using -iver/-uver often adds a sense like:

• it happened quickly
• it happened suddenly
• the speaker noticed it as a distinct change

So:

• Rüzgar durdu = The wind stopped.
• Rüzgar duruverdi = The wind just suddenly stopped.

It makes the sentence feel more lively and immediate. In descriptive narration, that is a very natural choice.