The clues bear little relationship to those in a normal puzzle and take a bit of getting used to. However, there are two things that help:
1. Each clue in its expanded form tells a 'story'.
2. The approximate location of the omitted letters is usually fairly obvious.
So if we take 1ac, 'With holidays imminent, the bad weather is moving, sad', the first half of the clue is clearly 'setting the scene' and it is at the end of the clue that text has surely been lost.
The break has to come part way through a word, and that word 'sad' dangling on the end looks the most likely candidate. So how or where might the weather be moving? 'In', perhaps, but if the break is indeed in 'sad' then the word after 'moving' must begin with an S. If it's a compass direction, the only one beginning with S is 'south'. Assuming we've got that right then we have:
'With holidays imminent, the bad weather is moving sOUTH ???ad', and a bit more inspiration (or a trawl through seven letter words beginning OUTH) gives us OUTHIRE and the undevilled reading:
'With holidays imminent, the bad weather is moving south I read'
(note that the comma after 'moving' has gone - punctuation and spacing can vary between the 'devilled' and 'undevilled' versions.
Hope that helps!