de forma inesperada

= out of the blue, like a bolt out of the blue, like a bolt from the blue

Ex. The article is entitled 'Software out of the blue'.

Ex. The election results came like a bolt out of the blue, threatening his loss of power.

Ex. A white bird in the distance was seen to dart down like a bolt from the blue and seize a flying fish in the air.

* * *

= out of the blue, like a bolt out of the blue, like a bolt from the blue

Ex: The article is entitled 'Software out of the blue'.

Ex: The election results came like a bolt out of the blue, threatening his loss of power.

Ex: A white bird in the distance was seen to dart down like a bolt from the blue and seize a flying fish in the air.