可能性 in Compound Sentence

[Dariat]

Hello.

I have just read this Japanese news article about the rainy season and El Niño:
http://www3.nhk.or.jp/news/easy/k100150 ... 31000.html

There is a grammatical construction that I've encountered several times in the article and of whose exact meaning I am not entirely certain. It's a compound sentence ending in 「可能性（がある）」 and I am not sure if 「可能性」 refers to both or only the latter part of the sentence.

Here are the sentences in question:

In the title:
「ことしの梅雨は長くて雨がたくさん降る可能性」
In the main text:
「…ことしの梅雨は長くて、雨がたくさん降る可能性があると気象庁は言っています。」
「ことしは梅雨明が遅くて、雨も増える可能性があります。」

Which of the following two “interpretations” is correct?

1. there is the possibility that this year's rainy season is going to be long and that it's going to rain a lot
2. this year's rainy season is long and (therefore) there is the possibility that it's going to rain a lot

Help would be much appreciated.
Thank you.

[community.japanese]

Dariat san,
You are reading Japanese news! Wow great.凄いですね。
The correct translation is a.
がんばってください。
Yuki 　由紀
Team JapanesePod101.com

[Dariat]

Thank you very much.

[community.japanese]

Dariat san,

どういたしまして。

Yuki 由紀
Team JapanesePod101.com