Conjecture, omen, prophecy, augury...
An augury is a divination based on the appearance and behaviour of animals, or, by extension, any omen or prediction.
If you mean "prediction gov", it is the official government weather prediction website.
omen,portent, augury, sign, indication, token, prediction
an omen or prophecy
good or bad
No, an omen is a sign, which can mean good, bad, dangerous, etc. And a warning is something that is going to happen. For example the clouds are dark grey, that is a warning that a storm is coming. A omen is something religious and can be and mean different things to different people.
to blurtit out
It is a bad omen
Good luck
the foretelling or prediction of what is to come.
A prediction is the strong belief that something will happen. It is said to be a true prediction if the event happens. Before the event takes place, you would have to ask the prophet/psychic making the prediction what it means. After the event, or after the prediction is proven false, you can see for yourself what it means.