6. Describe a time when you experienced a natural disaster or unusual weather event.Explain what happened and how it affected you.

Always keep 'a big map' in mind:

first 1-2 sentences: introduction. my opinion: A or B. agree or disagree. about 5 seconds

First, reason 1 (1 sentence) + why reason 1 (some arguments. 1-2 sentence) + advantages of reason 1( 1-2 sentence). // about 20 seconds

Second, reason 2 (1 sentence) + why reason 2 (some arguments. 1-2 sentence) + advantages of reason 2 ( 1-2 sentence). // about 20 seconds
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For reasons, we can apply 'save time', 'save money', 'find a job', 'make friends', 'get more information' as reasons to all speaking topics for advantages..

or we can apply 'waste time', 'waste money', 'no job', 'make bad friends', 'get bad information' as reasons to all speaking topics for disadvantages.
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Since the topic is for disadvantages, we may look for 'waste time', 'waste money', 'no job', 'make bad friends', 'get bad information' as reasons:

introduction: I experienced a big snow in the early Oct...

first, it wastes me extra money. because I have to buy a new and bigger jacket....

second, it is not convenient for me. because of the reasons like: buses come later, roads are slippery, shops closed earlier...//your second reason is not specific

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when you are out of thoughts, always go to reasons like: 'save time', 'save money', 'find a job', 'make friends', 'get more information'. However, try your own reasons first, then go those reasons as backups.