Post kiam la ŝtormo pasis, unu fulmo ankoraŭ brilis super alia kvartalo, sed poste ĉio silentis.

Post kiam means after when it introduces a whole clause with a verb, like la ŝtormo pasis.

• post
  • noun phrase: post la ŝtormo = after the storm
• post kiam
  • clause: post kiam la ŝtormo pasis = after the storm passed

So here kiam is needed because what follows is a full clause, not just a noun.

La marks something definite or identifiable: the storm rather than just a storm.

In context, the speaker is talking about a particular storm, so la ŝtormo is natural. Esperanto uses la much like English the.

Pasis is the past tense of pasi, which can mean to pass, to go by, or in context to be over.

So la ŝtormo pasis means the storm passed, or more naturally in English, the storm was over.

Because Post kiam la ŝtormo pasis is a subordinate time clause, and it is followed by the main clause.

So the structure is:

• subordinate clause: Post kiam la ŝtormo pasis
• main clause: unu fulmo ankoraŭ brilis super alia kvartalo

The comma helps separate those parts clearly.

Normally Esperanto has no indefinite article, so fulmo by itself can often mean a lightning flash or lightning in context.

Using unu adds the idea of one single flash or bolt. So here it is not just an article substitute; it emphasizes that there was still one flash left.

Fulmo usually means a lightning flash or bolt of lightning, something countable.

So unu fulmo suggests a single visible flash. If you wanted to talk about lightning as a general phenomenon, the wording might be different depending on context.

Ankoraŭ means still or yet, and brilis is the past tense of brili, to shine.

So unu fulmo ankoraŭ brilis means that even after the storm had passed, one flash was still shining or still visible.

The word order is normal: adverbs like ankoraŭ often come before the verb they modify.

Yes, a learner might expect fulmi, which means to flash lightning or to lightning.

But brili means to shine, and here it focuses on the visible brightness of that one flash. So:

• fulmis would stress the lightning action itself
• brilis stresses the shining appearance

In this sentence, unu fulmo ankoraŭ brilis is perfectly understandable and stylistically vivid.

Because super here expresses location, not direction of movement.

• super alia kvartalo = over another neighborhood
• super alian kvartalon would suggest motion toward or onto a position over that neighborhood

Since the lightning was simply shining above that area, the ordinary form without -n is used.

Alia kvartalo means another neighborhood or a different district.

It implies a contrast with some other area already relevant in the situation, even if that other area is not named directly in this sentence. The point is that the last flash was over a different part of town.

Poste is an adverb meaning afterward, later, or then.

Post is mainly a preposition meaning after and needs something after it, such as a noun or clause:

• post la ŝtormo = after the storm
• post kiam la ŝtormo pasis = after the storm passed
• poste = afterward

So sed poste means but afterward or but then.

Because ĉio means everything, a singular collective idea.

• ĉio = everything
• ĉiuj = everyone, or all ones, plural

Since ĉio is grammatically singular, the verb is singular too: ĉio silentis.

Silentis is the past tense of silenti, meaning to be silent or to keep quiet.

So ĉio silentis means everything was silent or all was quiet.

It is close to ĉio estis silenta, but silenti is often more compact and natural in this kind of sentence. It gives a smooth, literary feel.

Yes. Esperanto word order is fairly flexible because endings show the grammatical roles clearly.

Still, this order is very natural:

• time setting first: Post kiam la ŝtormo pasis
• then the main event: unu fulmo ankoraŭ brilis
• then contrast and result: sed poste ĉio silentis

Starting with the time clause helps frame the whole scene before describing what happened next.

A few letters may stand out to an English speaker:

• ŝ in ŝtormo sounds like sh
• ĉ in ĉio sounds like ch
• ŭ in ankoraŭ is a short w-like sound, part of a diphthong

So roughly:

• ŝtormo ≈ SHTOR-mo
• ĉio ≈ CHEE-o
• ankoraŭ ≈ an-ko-ROW

Esperanto spelling is very regular, so each letter has one consistent sound.