Four sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph.

P. However, some relief is expected as the Australian Broadcasting Corporation has predicted widespread rainfall for the east coast of the country starting 14 January 2020.

Q. The air quality in Melbourne deteriorated to the worst in the world as smoke from massive bushfires engulfed Australia's second biggest city.

R. Meanwhile, the raging bushfires, one of the worst in its history, has killed at least 26 people, burned over 10 million hectares of land, destroyed over 2000 homes and pushed many species towards extinction.

S. As a result, the Australian health authorities have issued warnings, advising people to stay indoors and take precautionary measures.