Serious trouble from wind is astern (8)

I believe the answer is:
disaster
'serious trouble' is the definition.
'disaster' can be an answer for 'trouble' (disaster is a kind of trouble). I'm not certain of the 'serious' bit.
'from wind is astern' is the wordplay.
'from' indicates a hidden word.
'DISASTER' can be found hidden inside 'wind is astern'.
Can you help me to learn more?
(Other definitions for disaster that I've seen before include "Terrible calamity" , "Calamity, sudden great misfortune" , "Catastrophic occurrence" , "Tragedy of asterids" , "Sudden catastrophe" .)
