Prekid opskrbe još traje.

Literally, prekid opskrbe means interruption of supply.

• prekid = interruption, break, stoppage
• opskrbe = of supply

So the whole phrase works like the interruption of supply or, more naturally in English, the supply interruption / supply disruption / outage, depending on context.

Because opskrbe is the genitive singular form of opskrba.

The basic noun is:

• opskrba = supply

After a noun like prekid (interruption), Croatian often uses the genitive to express of ...:

• prekid opskrbe = interruption of supply

This is very common in Croatian noun phrases:

• kraj filma = end of the film
• početak sata = start of the class
• prekid veze = interruption of the connection

So opskrbe here means of supply.

Prekid is in the nominative singular because it is the subject of the sentence.

The sentence is built like this:

• Prekid opskrbe = the subject
• još = still
• traje = lasts / continues / is ongoing

So the thing that is still continuing is the supply interruption.

Here još means still.

So:

• još traje = still continues / is still going on

Be careful: još can also mean other things in different contexts, such as more or another.

Examples:

• Još kave, molim. = More coffee, please.
• Još jedan dan. = One more day.
• Još traje. = It is still going on.

In your sentence, the meaning is clearly still.

Traje is the 3rd person singular present tense of trajati.

• trajati = to last, to continue, to go on

So:

• traje = lasts / continues / is ongoing

In this sentence, a natural English translation is often:

• The supply disruption is still ongoing.
• The outage is still continuing.
• The interruption of supply still lasts is grammatically possible, but less natural in everyday English.

Because Croatian often uses trajati where English might prefer be ongoing, continue, or still be happening.

So Croatian says:

• Prekid opskrbe još traje.

Literally:

• The interruption of supply still lasts.

But natural English often changes the structure:

• The supply outage is still ongoing.
• The disruption is still continuing.

This is normal. Croatian and English do not always choose the same verb for the same situation.

Yes. Croatian word order is fairly flexible, and changing it usually changes emphasis, not the core meaning.

Neutral word order:

• Prekid opskrbe još traje.

Other possible orders:

• Još traje prekid opskrbe.
• Prekid opskrbe traje još. (less common in everyday neutral speech, but possible in some contexts)

The most natural neutral version is usually:

• Prekid opskrbe još traje.

Putting još earlier can emphasize still a bit more:

• Još traje prekid opskrbe. = The supply interruption is still ongoing.

Yes, trajati is imperfective.

That matters because the sentence describes an action/state that is ongoing, not completed:

• još traje = is still lasting / is still continuing

Croatian uses imperfective verbs for actions or states that are in progress, repeated, or viewed from the inside.

That makes trajati the natural choice here, because the interruption has not ended yet.

No. Croatian does not have articles like English the and a/an.

So Prekid opskrbe can mean:

• the supply interruption
• a supply interruption

Which one is meant depends on context.

In a real-life notice or announcement, it will often be understood as the interruption currently being discussed:

• Prekid opskrbe još traje. = The supply disruption is still ongoing.

Opskrba is a broad word meaning supply or provision.

Depending on context, it could refer to things like:

• electricity
• water
• gas
• food
• medical supplies
• general provision of goods

So the sentence by itself does not specify exactly what kind of supply is interrupted. The surrounding context would tell you.

For example:

• in a utility notice, it might mean water or electricity supply
• in logistics, it could mean supply of goods
• in emergency situations, it could mean aid or provisions

It sounds neutral, factual, and informational.

It feels like something you might read or hear in:

• a public announcement
• a utility company update
• a news report
• a status notice

It is not emotional or dramatic. It simply states that the interruption has not ended yet.

So the tone is roughly:

• The supply disruption is still ongoing.
• The outage is still in progress.