The most common and most likely answer to this crossword clue is the 4 plus 2 letter word BLEW IN
I've seen this crossword clue in The Sunday Telegraph
B
L
E
W
I
N
More clues leading to the result BLEW IN
Buddy explains!
The straight part
We know that "suddenly arrived, like blizzard?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case suddenly arrived, like blizzard? = blew in.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.