earthquake tremors start
rain falls on an autumn day
the scarecrow falls down
This poem is about a person with low blood sugar. Their blood sugar has dropped dangerously low.
As this happens, the person starts to shake (earthquake tremors start) and they start to sweat (rain falls), even though they feel cool (on an autumn day). Their condition worsens, and they collapse (the scarecrow falls down).
This poem is a 5-7-5 haiku.